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A
"He was responsible, respectful and professional. He was able to almost accomplish everything we had hoped that he would be able to do in the day, and will follow" up generously with us for the final small things.

-Miriam B.

A
"The staff was very prompt in returning the calls and scheduled the service within 24-48 hours. Arrived to perform the inspection in time and also arranged a rapid" repair on the spot. The needed re-wiring of sub-panel was completed the same afternoon once the diagnose was done. It is amazing how fast they could get to the spot and resolve issues. Their response after the service was prompt too. Will recommend to others.

-kelly L.

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Local Articles in Frederick

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Angie's Answers

?

This can be maddening. Over the past 40+ years, in 4 houses, I have had or have run across this problem from gas meter leakage, water well pump column vibration, doorbell transformer, circulating pump, an extremely small (mist spray) water pipe leak, flourescent and sodium lights, security system horn dead battery, gas meter leaking slightly, bees in wall, bat colony, electric typewriter left on, stereo left on very low, and speaker inductive hum.

This seems to be a popular and recurrent question, so I am going to give the long answer for use by future questioners too.

I am assuming you do not hear this noise away from your house, or that other family members can hear it to. Obviously, if you hear it elsewhere also and other family members cannot hear it, then maybe you have tinninitus or are hearing your own high blood pressure blood flow (seriously). This commonly gets more acute at night when it is quiet, so all you are hearing is your internal ear sounds. I had this happen once because of a middle ear blockage - drove me crazy, getting up in the middle of the night because I thought I heard a water leak through the walls. Try putting on a pair of earmuffs or hearing protectors - if you still hear it or hear it louder, this is probably the case.

One method if hum is on the clearly audible side is make a 2 foot long cone out of paper to hold against your ear - like an antique hearing horn - then in each room face each of 4 directions while listening for where sound is the loudest, and turn your head to pinpoint the exact direction - I would spend 10 minutes doing this before getting into detailed stethoscope listening.

Otherwise, sounds like time for the old stethoscope (about $12 at a drug store - get a metal soundhead one, not cheap plastic, which does not pick up vibration as well). Also, if you are older (say over 35 or so) your hearing might have started to deteriorated with age, so if you have children or grandchildren with sharp hearing, they might be able to help track it down. I am sure a young child or grandchild, if you have one, would love this sort of treasure hunt (with appropriate "treasure" for a reward for tracking it down). 

Being careful not to come in contact with electricity with the stethoscope, check all the likely sources listed below. Start by placing it against pipes and walls and floor in each room of the house - water sourced noise goes a long ways, and tends to reverberate in the walls, so if that is the source likely to hear pretty easy. Hold stethoscope against bare pipes, both hot and cold, and heating system radiators or hot air vents.

If listening to water and hot water heating pipes indicates it is not water sourced, then you could turn off the master (outside) breaker or all the inside breakers and see if it goes away. I would only do this during above-freezing weather and early on a weekday, just in case a breaker fails to turn back on correctly when you switch it. Older master breakers particularly, which typically have never been used, sometimes break or fail to reclose properly after being shut off, so then have to be replaced. You want to be doing this at a time of day when, if necessary, you could get an electrician in the same day to replace it without paying weekend or nighttime emergency call rates.

If turning off the master breaker (or all other breakers) eliminates the hum, then turn them on one at a time until you find the one that turns the hum back on, then track where that circuit likely feeds (hopefully it is labelled) and check every switch, outlet, and light fixture.

Humming sources include (not in any particular order, a + in front means likely or common source of humming, - means rare or not likely):

1) + toilet fill valve - slightly leaking toilet inlet valve (listen where water tubing comes into toilet tank, and look inside tank to see if there is any water flow into or ripppling of the water in the tank or the bowl, or from the bowl filling tube (usually a small black plastic flexible tube which comes out of the fill valve (usually far left side of tank) and is clipped onto and discharges down into a hollow vertical brass or plastic tube or pipe in the toilet tank, which refills the toilet bowl after you flush)

2) + leaking faucet - kitchen, tub, shower, sink, utility tub, etc - it is amazing how just the smallest valve leak can make a hum or hiss that you can hear through the walls (especially at night), but only drips every few seconds.

3) - electric service meter dial motor

4) - electric breaker panel - rarely, a loose main power feed to a panel (especially with aluminum main service wire) will get loose enough that it vibrates back and forth and hums in its connector. A loose bus or snap-in breaker slot cover plate in the panel can also do this rarely

5) - gas meter or overpressure vent (unlikely, as you have had it replaced)

6) + boiling in the bottom of hot water heater or boiler because of buildup of lime, but would usually be intermittent - only when unit is heating

7) + furnace fan or electrostatic filter (forced air heat), or circulating pump (hot water baseboard heating), or steam condensate pump or overpressure venting (steam system).

8) - gas control valve or electric control box on a gas furnace, or its transformer (most have a 120V to 24, 16 or 12V transformer inside the front of the furnace

9) + air filter or electrostatic filter alarm on forced air furnace - some have a passive "whistle" opening that sounds softly when the filter is getting blocked, and if blocked with dust could make a hum rather than a whistle.

10) + Some water softener systems also have an "alarm" device to tell you it is time to service the unit, so check that if you have such a unit.

11) - a slightly leaking overpressure/overtemp valve on hot water heater or furnace (would be dripping)

12) - air venting from the air vents on hot water heating system. These will commonly make a hum or wheeze sound, for only for a few seconds at a time - not continuous unless leaking water

13) - city water system booster pump sound through the water column (if there is one near your home) - listen at the incoming water pipe - if much louder there than at other pipes within the house, that could be a house, though unlikely. If you think this could be it, find your water shutoff valve (typically 10' into your lawn from the street) and listen there. Would also be audible at neighbor's service pipe if that is the source.

14) - gas system compressor sound coming through gas pipe - listen to gas pipe outside the house and inside the house near furnace - if louder outside,, this could be a possible source, but the compressor or pressure reducer would have to be near your house. Would also be audible at neighbor's service pipe if that is the source.

15) + auxiliary booster circulating pump in your hot water or steam heating system (there may be one separate from the furnace, likely in the basement or a utility closet - most commonly found on  multi-unit apartment building with central heating and in 3 story or higher buildings, but you never know)

16) + a water leak, either inside or a leaking hose bib or pipe, or in your service pipe coming to the house

17) - electric on-demand water heater or electric-powered water filtration unit under the kitchen sink or inthe basement

18) + refrigerator compressor or fan hum

19) + doorbell transformer (front or back door - transformer is usually NOT at the doorbell, it is usually mounted in an open space like nailed to a basement joist, in an entry closet, or in the cubby space under the stairs - always physically near to the door, but NOT always on the same floor)

20) - any instant-on device like a TV

21) + any audio device (stereo, iPod, music player dock, computer, etc) that may have been left on at very low volume. Also, VERY rarely, if stereo or external speaker wires are run close to and parallel with an electric wire in the wall, they will acquire an  inductive voltage and hum.

22) + anything with a transformer, including stereo, add-on computer or iPod speakers, battery charger (rechargeable batteries or spare car battery or rider mower or boat battery charger), any portable electriconic device. Also portable device chargers (computer, iPod, cell phone, etc) - even if the device is not plugged into the transformer, as long as the transformer (charger) if plugged into an outlet, it is transforming high to low voltage, and transformers commonly hum

23) - electric typewriter left running

24) - electric ultrasonic cleaner or denture cleaner or electric toothbrush left on 

25) - home hair drying hood left on

26) - a lint buildup-jammed bathroom, kitchen, or attic fan. Many of these have, for safety, so called "self limiting" motors that if they jam just sit there and hum, but do not burn out.

27) - an attic cooling fan whose thermostat has failed, so is on all the time

28) - electronic furnace thermostat

29) + air conditioning unit, or aquxiliary air conditioner evaporator

30) + humidifier / dehumidifier - either permanently installed or portable

31) + portable heater / fan / air purifier

32) - automatic animal feeder waterer - either water supply or electric, as applicable

33) - dishwasher motor runningcontinuously - not shutting down after end of cycle

34) - convective or direct-vent oven or cooktop exhaust fan not shutting off

35) + flourescent (tube or CFL) or sodium or halogen light bulb / ballast hum (either inside, outside front door fixtures, or public street lights). These can hum quite pesistently when the starter circuit sticks on, or the bulb is dying and will not start (light completely), so the started circuit tries continually to start the lamp - can make a hum audible up to a block away on street lights.

36) - a dying electronic photocell designed to turn on your outside lights

37) - home security system, especially its alarm or horn. If the alarm is sounding but for some reason the main power is not getting to it, then as the battery goes dead (or if full voltage is not getting to it) is can give off a squeek, hum, or rasping sound - ditto if insects like wasps or hornets build a nest in it, so it cannot sound correctly.

38) + well pump, pressure tank, or filtration system, if you are on a well

39) + insect or bat nest in the attic or walls or in outside bins or cupboards, electric panel/meter, or outside telephone connection box (bees /wasps / hornets most likely) - though this usually varies by time of day, although it would "pulse" at the time of day when they are waking up or going to sleep.

40) + carpenter ants or termites - their continuous chewing of the wood can sound like a hum till you get right up against the colony, then you can actually hear the chewing

41) - a regional hum, as has been occurring at times in Ohio, Wisconsin, and Arkansas - where micro-seismic activity causes a hum or booming sound. Google or call your local paper and see if anyone has been reporting this in your area.

42) + outdoor power service transformer - either a metal (typically army green or gray) about 1 foot diameter "can" mounted on a power pole if you have overhead service, or a 2-3 foot cubic metal box on the ground or in a manhole pit near the street if you have underground service, which usually serves 4-6 houses (so may be in a neighbor's yard) and will have a voltage rating marked on it, usually in yellow stick-on lettering - like 4160V - 220V. Usually has high voltage - keep away safety markings on it.

43) - you have found where the Caddyshack gopher (who hummed to himself) moved to after Bill Murray blew up his happy home at the golf course.

Hope this list helps you (and future users with the same question).

?
Unless you feel uncomfortable doing minor repairs or don't understand that you should turn the electicity OFF before doing such installations...you can do the job yourself with a screwdriver and needle nose pliars...within 15 minutes. 5-10 minutes if you've done it before.
?

As I understand it, you are looking at putting in a fan where there is no ceiling electric outlet. Since I am not sure, will try to break out piece by piece, undersanding these wouyld all be lumped into one job (possibly excluding wiring new outlet and switch). I hate to be so general, but access is the key here - if access is easy and there is a suitable light switch in the same room, cost can be at the low end of this range. If assess is poor and you don't want holes knocked in your drywall, then get more expensive real fast.

1) cost of fan typically $125-250 unless high end model

2) remove existing regular 4" box, install supports to joists and new box (ceiling fans need specially supported boxes due to the extra weight and swaying motion of the fans) $50-75

3) tap electric from existing circuit at existing box, upgrade existing light switch box to add one or two more switches (Adjustable for fan speed, 2nd for light, if so equipped), run wiring to ceiling fixture $125-250

4) put up fan, connect, test $75-100

So - total About $250-425 with no box there now, plus cost of fixture. A simple install to replace an existing fan, or install where the ceiling box was wired for a fan, would be only about $75-100.

This all assumes the existing nearby electric circuit can handle the addition of the fan - if not, then wiring cost will go up. It also assumes there is access via open attic or joists to install the wiring. Otherwise, installation cost OK but does NOT include repair to holes in drywall or ceiling to pull wiring.

Note also that an existing ceiling light box would probably NOT fill the bill - code in almost all jurisdictions requires 12 ga wire for fan motors, most household circuits are 14 or 16 gauge, so would need new wire pulled from a circuit with adequate capacity.

Get bids ! I worked on one job where the owner in a high-end house decided to put in fans with fancy candeliers underneath after construction was done - cost almost $3000 to do installation because all the wall and ceilings were finished in a high-end finish, so all wire pulling had to be done remotely - including removing siding to put in pull boxes at changes of direction and fasten conduit to studs. PLAN AHEAD !

 

?

The amperage is the rated power it can handle. Modern houses are generally built with 200 amp panels, and a lot of the newer ones are going 300-350 amps as more and more electronic devices and fancy and high-demand kitchen devices and increased lighting are used in homes.

Both are just as safe - the 200 amp one will just have many more breaker slots, allowing way more circuits, and providing more room for expansion in the future, especially for power-hungry things like shop tools. Each uses only as much electricity as is used in the circuits - the panel itself does not consume any electricity, so no long-term impact there. It is just a circuit connection box where the individual circuits are connected, with circuit protectors (breakers) in line before it connects to the main line to your electric usage meter.

Unless you are real tight on money on this job, I would upgrade to 200 amps capacity - the incremental cost is about $100-200 or so over the 100 amp panel. If your incoming power line cannot handle 200 amps, you could install a 100 amp main breaker to keep the power company happy but put in the 200 amp breaker panel, so in the future a main line upgrade could be done with only a main disconnect breaker upgrade of $100 or so, without having to change anything inside the house.

Having the larger panel, especially if 200 amp capacity all the way from the meter, can be a selling point (or rather, lack of a negative point) to a potential buyer with lots of electronics or who is into shop power tools. It would also facilitate conversion to electric heat / water heating if someone wanted to do that.

?

Click on the Home > Electrical link right below your question - you will find a number of questions like yours with answers about panel and service upgrades, and factors which affect cost.

I would get a couple of opinions from electricians on the general panel upgrade issue, unless you want to do that anyway for general upgrade purposes. If you are upgrading the main panel from 100 to 200A, then yes you have to upgrade to AFCI and GFCI breakers (as applicable) as part of the process. 

However, if all you want to do it install power for the electric HVAC system, then it may be a lot cheaper to just upgrade the outside service capacity if necessary, and then install a dedicated secondary dedicated panel for HVAC system use, without touching the existing main breaker panel. Could make a 2 or 3:1 difference in cost, depending on your current situation.

?

An electrician can help you calculate your needs.  If you want everything to run as normal while on the generator you will need a fairly large setup.  Add the amperages of every device and appliance you expect to use while on the generator including the refrigerator, freezer, HVAC (all components), TV and accessories, lights, etc.  Wattage (which is how generators are measured in terms of output) is calculated as Volts x Amps = Watts.  So a 120v appliance using 15 amps requires 1800 watts.  A 240v appliance using 30 amps (like an electric water heater) requires 7200 watts.  Don't forget to calculate starting amps, not just running amps.  Appliances with motors and compressors require more power at startup than they do once running.

 

A simpler way to cheat/estimate your need is to count up the breakers in the main panel of your home.  All single pole breakers are multiplied by 120 while the double pole breakers are counted together and multiplied by 240.  While this method will give you a rough idea of what you need it may not account for all of your useage.  Most people don't hook up standby generators to the entire house.  Instead, they have an electrician selectivly wire which circuits are powered on the standby switch.  Then when the power goes out and the generator comes on only the essential devices are running.  This saves money on the generator as a smaller one can be used as well as on the fuel used to run a smaller generator versus a larger setup.

 

Most typical homes have a 100, 200, or even 3-400 amp service panels and meters.  If you want to run everything consider a generator that matches your existing service from the power company.  A 200 amp, 220v service is 44,000 watts.  That is your maximum available draw but it doesn't mean you really use that much.  Most people don't.

Electrician reviews in Frederick

A

Rating
The work was excellent. and his assistant were on time and professional. The responsiveness to our request for the work required was fantastic. Appointment options were provided to get the work done. made sure that the original work would be done promptly, the next day, by stopping at our house in ...More the afternoon on his way home from work. Had the job done withing an hour. Fantastic!!!
- Michael M.
A

Rating
The original electrician assigned could not come at scheduled time due to a family emergency, but the company called to let us know the situation and offered to send another electrician working in our area at a later time in the same day. We were agreeable.
Electrician arrived at scheduled time, but didn't have a dimmer switch, because he ...More wasn't the original assigned electrician and didn't know what parts were needed. He offered to go their electrical supplier (if they were open, which they were - barely) and obtain the necessary dimmer switch.
Switch was replaced without any issues. He also looked at the bathroom exhaust fan, and said that the heater was actually not working, and there wasn't anything more he could do unless / until I purchased a new fan.
My "price" concern is with the charge for troubleshooting, which is in the neighborhood of $300, even though it seemed to require only about 15 minutes! They seem to have set amounts they charge for certain services, which can be a value, or not, to the homeowner. I ended up paying for the $88 value package (which presumably gave me $200+ value in work) plus another $21 for the service. Considering this included the switch, and he was maybe at my house for a total of an hour, that is probably typical...not any great value.
He also spent a fair amount of time describing other services I could purchase, but there was no high pressure or anything.
All in all, they were reliable, trustworthy and they stand behind their work, just need to get a good understanding of the charges to expect for the work you are having them perform.
- VICTORIA V.
A

Rating
Work was of high quality and was completed promptly without any surprises. Crew worked very closely with the cabinet installer planning ahead each day. They were very attentive and cleaned up the work place each day, no mess was left behind. Everything was explained in detail and our questions/concerns were answered patiently as the project progressed. ...More Price seemed fair and very competitive with other estimates I got for this job. Overall, we were very pleased with the final product and would love to use them again for future projects.
- Nicolae B.
A

Rating
sent out 2 workers to check out why we were experiencing an electrical when in our shower. It was diagnosed that we needed a grounding wire attached to our water line.
- Bob B.
A

Rating
was able to track down the root cause of 4 light switches that were
not working. It was an unusual cause linked to a switch that was
working. It took a lot of checking the electrical system. House wired in
a strange way when built. But, he solved the problem! was quick
to respond ...More and fit us in his schedule. This is the second time we have retained for our needs. Will use him again.
- Barbara F.
A

Rating
Great work - clean, professional, and prompt. They gave an estimate on the phone and it was less expensive than anticipated.
- Dan P.
A

Rating
Upon requesting service, Nick was very quick to respond to my questions and walked me through the pricing for the service. His technicians arrived on time, were willing to explain their work, etc. I did have a wall switch that went to an unknown location, and after some investigating the technician admitted that re-wiring the switch to the light would ...More require a smaller/more nimble technician to navigate the very tight attic space. Overall, however, the rest of the work was completed in a timely manner and to the quality promised. I would call them again for sure.

- Tim S.
A

Rating
was extremely professional and did a great job. It wasn't going to be easy but he worked quickly and efficiently to get it done. We would definitely use him again!
- Kelly D.

Electricians in Frederick, MD

Companies below are listed in alphabetical order. To view top rated service providers along with reviews and ratings, Join Angie's List Now!

"Andrade's Painting"

3143 Southgate dr apt 10

#1 Handyman Service

9309 Penrose St
Frederick

1st class handyman

portship rd
Dundalk

2 Griffins Design and Build, Inc

27421 Clarksburg Rd
Damascus

A & J Home Remodeling

3212 South 13th Rd

A + Services LLC

11329 Old Prospect Hill Rd
Glenn Dale

A One Call Handyman Service

11703 Newport Mill Rd
Silver Spring

A&D Electrical Services

9810 BRADDOCK RD
Silver Spring

A&K Remodeling

Po Box 2266

A&S Electric, LLC

12913 moray rd
Silver Spring

A/X Carpenters & Builders

4108 Warner St
Kensington

a1-simco electric Inc.

5117 Yorkville Rd
Temple Hills

AAHI

PO BOX 1285
La Plata

AAV INC

8101 Hudson Falls Way

Absolute Electric Service

8787 Branch Ave
Clinton

Active Home Renewal

1409 Broadwood Dr
Rockville

ADG Contractor

3120 Collie Lane

Advanced Electric

10495 Greenleaf Place

Advanced Solar Technologies

10487 Carberry Ct
White Plains

Agcayazi llc

11110 Byrd Dr

AIR SYSTEMS INC

806A BARKWOOD CRT
Linthicum Heights

AIRECO SUPPLY INC

5915 URBANA PIKE
Frederick

AK Electric

2708 Sleepy Hollow Road

Ak Electronics

452A Shadyhill In
Millersville

All Builders United

6904 Highland St

ALL IN ONE DATA PRODUCTS

4507 METROPOLITAN CT
Frederick

Alzate Painting LLC

2114 Lanier Dr
Silver Spring

AMERICA'S 1ST CHOICE INC

3521 29 TH AVE
Capitol Heights

America's Best Home Improvement

9244 E Hampton Dr
Capitol Heights

AMERICAN CONSTRUCTION SERVICES

10602 Guilford Road
Jessup

AMERICAN ELECTRICAL SVC

3951 DARTMOUTH CT
Frederick

American Home Specialists

13221 Mockingbird ln
Bowie

American Mold & Restoration

3540 Crain Hwy
Bowie

American Service & Installation Corp.

15812 Mt. Everest
Silver Spring

AMG-ANTONIO MENDEZ GOMEZ

1208 HOLTON LN
Takoma Park

AMGC LLC

18534 Cherry Laurel Lane
Gaithersburg

Amplified Services

3856 Pinewood terr

Amptech

9605 Ironsides Rd.
Nanjemoy

ARC ELECTRIC

PO BOX 3685
Frederick

Arch7 Handyman Services

6373 Little River Turnpike

Archadeck of Central Maryland

8302 Brink Rd
Gaithersburg

Arco Painting & Remodeling LLC

14405 Innsbruck Court
Silver Spring

Argent Heating And Cooling LLC

501 Church Street NE

ARH Electric

PO Box 3638

Arme Construction, Inc

13317 Rushing Water Way

ARTIFEX CONTRACTORS LLC

7720 Timmons Rd
Union Bridge

assa construction services,llc

9304 player drive
Laurel

Associated Designers

2844 Wisconsin Ave NW

Associated Electric, LLC

7144 Boyers Mill Road
New Market

Atlantic Coast Electric, Ltd

PO Box 735
Frederick

Auto Clinic Care

5531 Nicholson Lane
Rockville

Avedon USA LLC

505 Commerce Dr
Upper Marlboro

awm electric service

614 larchmont ave

AYT Capitol Heights Transmission

6520 Central Ave
Capitol Heights

B & B Quality Home Improvement

13251 overcup oak court

B T Martin Contractors

7130 Rock Creek Dr
Frederick

B&W Painting Company

329 Prince George Street
Laurel

B.A.I Construction

2815 Gibson Oaks dr

B.K. Services

504 kibler circle

Baldissera Electric

15312 Gable Ridge Ct
Rockville

Baldwin Remodeling LLC

2234 Hidden Retreat Trl
Huntingtown

Barry's Capentry

5515 Heming Ave.

Basement Masters

1680 E Gude Dr,
Rockville

Bear Rock Electric Inc

Corporate Offices in Mt Airy, MD and
Mount Airy

Beautiful Home Services

18909 Fisher Ave
Poolesville

Belectric1331

15007 Cardin place

Bella Casa LLC

14216 Long Green Dr
Silver Spring

Benchmark Builders LLC

108 Meadowview Lane

Berith Builders

13074 Langley Rd
Bryantown

Beschenbossel, Dr. John

5225 Wisconsin Ave NW

BEST DRYWALL REPAIR CO

7508 JERVIS ST

Best Way Electric

PO Box 5143
Laurel

Betty List

2703 MEMORIAL STREET

BGE Home

1409 Tangier Dr
Baltimore

BHI

154 SCOTT DR

BIDDLE'S HEATING & COOLING

9107 3rd St
Lanham

Big Plate Services

13923 Big Yankee Lane

Billings Construction Inc

14725 Baltimore Ave

bingers handyman services

11454 green acres ct

Blanca's Remodleing

303 Sunbury Ln

BLC Services LLC

22276 Great Trail Ter

Bogan Services

7609 Airpark Road
Germantown

Bonillas Contractors Inc.

13408 Tamarack Rd
Silver Spring

BOPAT ELECTRIC CO

305 E 4TH ST
Frederick

BP Associates Inc.

4005 Mavis Court

Brad4Cad LLC

5657 Utrecht Rd
Baltimore

BRANCH ELECTRIC SUPPLY CO

1559 TILCO DR
Frederick

BRANDENBURG ELECTRIC INC

700 N EAST ST
Frederick

Broadband Technolgy Corporation

22923 Quicksilver Drive

Buell's Home Remodeling & Handyman Services

39820 Golden Beach Rd
Mechanicsville

Building Services Group LLC

1250 Connecticut Ave NW

BUILT-WELL CONTRACTORS INC.

3215 Hoopers Delight Rd
New Windsor

Buri Electric LLC

11654 Plaza America Dr

byron`s construction

12804 connecticut ave
Silver Spring

C & A Electric

4208 48th Street
Bladensburg

C H Tel. Co., Inc.

11700 Piedmont Rd.
Clarksburg

C-CON Inc

7646 Fullerton Rd

C-N-S Remodeling

4105 Duke St

C-Walls Construction LLC

PO Box 779
College Park

Cabinet Restoration Company LLC

4223 Hanover Pike
Manchester

Cable Connexions LLC

2201 Eastern Blvd.
Baltimore

Cadel Construction Group

604 Twinbrook Pkwy
Rockville

Capital Carpet

608 Rhode Island Ave NE

Capital Comfort LLC

14740 Flint Lee Rd.

Capitol Boiler Works

7921 Woodruff Ct

Carlos Camayo

9290 Towerside Dr

Carlos Gomez

3612 Freeport Ct

CCD Home Improvement

7803 Old Litchfield Ln
Ellicott City

Cenergetix, LLC

99901 Belward Campus Drive
Rockville

Centrik Construction Corp

10020 Dubarry St
Glenn Dale

Certified Electrical Technologies

7879 Cessna Ave
Gaithersburg

Certified Electrical Technologies

7879 Cessna Ave
Columbia

CHEVY CHASE REMODELING

7722 Whiterim Ter
Potomac

Cima Construction

4415 Evergreen Drive

CK Constructions Inc

395 Wilcoxson Dr

Clark's Home Improvement

2010 Bruce Place SE

Clay Fowler & Assoc

5810 63rd Ave
Riverdale

Climate Control Systems LLC.

7705 woodyard farm road
Upper Marlboro

Clinton Electric Co Inc

1850 York Rd
Lutherville Timonium

Cochrane Construction & Design

9710 Royal Crest Cir
Frederick

Code Electric, Inc.

12931 Alderleaf Drive
Germantown

COLOSSAL CONTRACTORS

15456 Old Columbia Pike
Burtonsville

COMLINK TELECOMMUNICATIONS LLC

12801 Worldgate Dr Ste 500

Commando Technical Solutions

4824 Brookstone Terrace
Bowie

COMMERCIAL ENERGY SYSTEMS INC

5744 INDUSTRY LN
Frederick

Community Design & Remodeling

6368 Coventry Way
Clinton

Complete Enhancement, LLC

6103 Baltimore Avenue
Riverdale

COMPUTERIZED CONTROLS CO

1 DAVIS AVE
Frederick

Contractors Consortium LLC

6412 Brandon Ave.

Contractors For Less

8238 Georgia Ave
Silver Spring

Cook Construction Contracting

8552 Dakota Dr
Gaithersburg

Copeland Construction

19828 Chesley Knoll Drive

COPPER ELECTRIC LLC.

3113 Hewitt Ave Apt 517
Silver Spring

Cortez Services LLC

6130 Marshall Dr

Cosgrove and Sons

14100 Red Eagle Ln
Silver Spring

CPF UNDERGROUND UTILITIES

180 JIBSAIL DR
Prince Frederick

Creative Concepts Remodeling Inc

PO Box 1413
Germantown

Creative Electrical Solutions

5325 Sidney rd
Mount Airy

Creative Electrical Solutions

5325 Sidney rd
Mount Airy

CRM Construction Inc

1355 Skinners Turn Road
Owings

Crossbuild, LLC

PO Box 1282

CRUM ELECTRIC CO

1532 PORTER ST
Frederick

CRUM ELECTRIC CO INC

5748 INDUSTRY LN
Frederick

CRW ELECTRIC, INC.

P O BOX 321
Brookeville

Crystal Chandelier Cleaning

6264 Audubon Drive
Columbia

CS Powerman LLC

8560 Springfield Oaks Drive

Current Power Inc

4106 Harvard Pl Ste B4
Frederick

Custom Carpentry Plus

9815 Ritchie Ct
Frederick

CUSTOM PAINT & DRYWALL

14611 NORTHCREST DR
Rockville

CutOn Power, Inc.

3725 Concorde Parkway

Cyrus Construction LP

3927 Old Lee Hwy

D & R ELECTRIC INC

4640 Wedgewood Blvd Ste 108
Frederick

D&A Contractors LLC

110D Frederick Ave
Rockville

Dan's electric 24/7 service

5734 magnolia tree ct
Frederick

Daughtry Electric

7211 Clifton Road

David and Matthew's Dad

5201 Crest Ct
Jefferson

David LeBon Custom Carpentry

16360 Frederick Rd
Woodbine

DC Details Inc.

6822 Valley Brook Dr.

Del Valle Contractor Inc

7779 Emerson Road
Hiattsville

DF contractors co.

5209 Aldershot Dr
Lanham

DHC Repairs and Remodeling (Dan Himmelfarb Co.)

11515A MOUNTAIN VIEW RD
Damascus

Diamond Contractor & Restorations

3618 Barcroft View Tr.

Divine Connections,LLC

530 Brisbane Rd.
Baltimore

Dixie Electric, Inc.

6907 Baltimore National Pike
Frederick

Dj Floors LLC

9192 Red Branch Rd
Columbia

DMV home improvement systems LLC

951 russell av
Gaithersburg

DMV Kitchen & Bath Inc

429 E Diamond Ave
Gaithersburg

DnT Electrical

650 Maskell Street, Apartment 407

DoCustomWork

Rockville

DOING ELECTRIC INC

8995 URBANA CHURCH RD
Frederick

Dorcus Construction Co Inc

11228 Putman Rd
Thurmont

Double K Contractors Inc

PO Box 536
Damascus

Drycas Co LLC

2459 Masons Ferry Dr #204

DS Johnson Electric

105 Contour Road
Mount Airy

Dynamic Electric

Germantown

E W SHIFFLETT ELECTRIC

3400 ELMWOOD DR

E3 Technical Group

PO Box 8255
Parkville

Eagles Home Improvement LLC

389 west side dr apt 102
Gaithersburg

Earl MacDonald, PE, LLC

8516 Montpelier Drive
Laurel

East Coast Builders, Inc

29948 Barger Dr
Mechanicsville

Edge Energy

6854 Distribution Dr
Beltsville

Efficient Home

3905 National Dr
Burtonsville

EK Electric

21700 Slidell Rd
Boyds

ELECTRICAL DESIGN

4507 Metropolitan Ct Ste M
Frederick

Elhaj Electric

8912 victor lane

Elite Development

4401 Connecticut Ave NW

Elite Electrical Construction

9017 Hickory Hill Ave
Lanham

Elk Electric Inc

7126 Bowers Rd
Frederick

ERAYELECTRIC

9012 BOWLER DR

Ercole Electric Inc

555 W Patrick St
Frederick

Ergon Construction

47078 Garrett Place

Ernest Electric LLC

5607 37Th Avenue
Hyattsville

Ernie Giordano

14731 Blackburn Rd
Burtonsville

Eubanks Electric

372 W Bay Front Rd
Lothian

EUCLID TECHLABS

400 Professional Drive, Suite 220
Gaithersburg

European Auto Service

7649-A Fullerton Rd

Expert Remodeling Solution Inc

1407 Caddington Ave
Silver Spring

FALCON INC

3803 KENDALL DR
Frederick

Feature Construction LLC

3831 S. George Mason Dr.

FEATURE DESIGN INC

6361 VERDE CT

Fike Construction Co Inc

PO Box 1026
Frederick

FIRST CLASS HOME IMPROVEMENT LLC

3837 Sugarloaf Pkwy
Frederick

First Impression Hardscapes

7154 Montevideo
Jessup

FLH ELECTRIC LLC

1 CATOCTIN AVE
Frederick

Flooring America

44710 Cape Court Unit 112

Flooring Design Center Inc.

3354 Woodburn Rd Unit# 21

Flynn Electric, LLC

9118 I Beam Lane

FMA INC

3520 Sugarloaf Pkwy Ste F3
Frederick

Forame Electrical Services

4805 Manheim Ave
Beltsville

Fox Installs

439 Foxridge Drive, SW

FREDERICK ELECTRIC CO LLC

1786 N MARKET ST
Frederick

FREDERICKTOWNE ELECTRIC

283 PINOAK DR
Frederick

Freeman & Sons

149 Ivanhoe St Sw Unit 101

Freeman & Sons Electrical & Homeimprovement

5808 Folgate Ct
Capitol Heights

French Accent

4217 Holborn Ave

FUSION ELECTRIC

18415 THUNDERCLOUD RD
Boyds

G & C ELECTRIC

12344 SHERWOOD FOREST DR
Mount Airy

G & G Constructions Inc

4810 Cherokee Ave

G C Construction LLC

9201 Gilmore Dr

G&G Construction and paint LLC

11512 Fenchurch ct
Germantown

G&S Concrete Cutting Company

2439 Henslowe Drive
Potomac

G.F.D Electrical Services

6906 Coolridge Rd.
Temple Hills

GAC Services Gaithersburg AC & Heating

227 E Deer Park Dr
Gaithersburg

GARDENER'S INC

8995 URBANA CHURCH RD
Frederick

GARY'S AUTOMOTIVE

8000 BRAYGREEN RD
Laurel

GCT llc

5828 Heming Ave.

GEC Electric Co.

144 Lexington Ct.

GENESIS CONTRACTORS

Silver Spring

George's Painting Inc

1009 Brill Way
Hagerstown

GILL-SIMPSON INC

1441 SULTAN DR
Frederick

Ginalick Electric Heating & AC

115 S Main St
Mount Airy

Glenwood Kitchen & Bath LLC

P.O. Box 247
Glenwood

Go Safer Security

8347 Cherry Lane
Laurel

gogreenow

18777 - E Frederick Rd.
Gaithersburg

Got Electric LLC

18978 Bonanza Way
Gaithersburg

Grand Design, LLC

977 A TONIA CT
Sykesville

Green Shift Energy

707 President St Apt 925
Baltimore

Greene Home Services, LLC

13208 Ardennes Ave
Rockville

Greenlink Inc

7004 Damascus Rd
Gaithersburg

GRMSR ELECTRICAL LLC

529 W SOUTH ST
Frederick

GRMSR ELECTRICAL LLC

4995 Winchester Blvd Unit 1
Frederick

GSW Electric Service LLC

6366 Albers Dr
Mount Airy

Gus & Sons Home Services

8133 Edmonton Ct

H & F Service Co

4328 Brookside Dr

H&H Home Improvement

5849 riverside dr

Handyman Connection of Rockville (MD)

19520 Club House Rd
Montgomery Village

Handyman Matters Of Frederick

7817 B Baltimore National Pike
Frederick

Handyman Medic

3220 Roderick Road
Frederick

Handyman Plus Service

7504 24th Ave
Hyattsville

Hanes on Homes

11140 Rockville Pike
Rockville

HANN & HANN INC

12307 WASHINGTON AVE
Rockville

HAS Construction LLC

3421 14th Street NW

Hassle Free Home Improvements, Inc

26218 Ridge Road
Damascus

Hawkins Electric Service Inc

8667 Cherry Ln
Laurel

HENRY CONSTRUCTION

822 viers mill rd
Rockville

Henry Sanchez

Germantown

Her Handyman

619 Evans Dr

Hi Tech Auto

2020 Chaneyville Rd
Owings

HLW ELECTRIC

PO Box 2038
Lusby

Home Air Services Inc.

12288 Wilkins Ave
Rockville

Home Breakthrough LLC

606 Swallowtail Dr
Frederick

Home Care Plus LLC

9709 Stanton Hall Ct
Gaithersburg

Home Contractors Plus

8402 Quill Point Dr
Bowie

HOME DEPOT

6691 FRONTIER RD

Home Depot - Annandale

6555 Little River Trnpke

Home Depot - Dale City

14025 Foulger Sq

Home Depot - Gaithersburg

15740 Shady Grove Rd
Gaithersburg

Home Depot - Silver Spring

2300 Broadbirch Dr
Silver Spring

Home Duty

1733 Northridge Lane
Frederick

Home Enhancements

7405 ORIOLE AVE

Home Evolution Construction

10551 Ewing Rd
Beltsville

HOMEOWNERS HANDYMAN SERVICE

PO BOX 6100
Silver Spring

Homepros Contracting

12612 Izaakwalgon Drive

HORN ELECTRIC SVC INC

2 S Wisner St
Frederick

House Paint and Cleaning

12689 Castile ct

House To Home Solutions

3508 May St
Silver Spring

Howes Construction Group LLC

6430 Dresden Place
Frederick

HP Drywall

5824 Ridings Manor Pl

HPC Maintenance, LLC

4100 whiting ct

HUNTINGTOWN CLIP & DIP

20 ARMORY RD
Prince Frederick

ICONIC MIND

1120 River Bay Rd.
Annapolis

INPRO TECHNOLOGY

5104 PEGASUS CT
Frederick

It's Electric

555 Thayer Ave
Silver Spring

J & A CONTRACTOR

509 LINDSAY CT

J & E Home Services

12311 Harbor Dr

J & F Contractors

Silver Spring

J & G Electric Co Inc

PO Box 7874
Gaithersburg

J Gill Construction

112 Delford Ave
Silver Spring

J&C Home Improvement & Remodeling

8603 Jolly Lane
Fort Washington

J&G Contractors, Inc.

6608 Cavalier Dr.

J&M MAGIC BRUSH

5602 LEE HWY

J&M services

8 west Masonic view ave

J.o Electric

becket ct

J.R Remodeling Inc

1485 Eden Drive
Frederick

Jahlinks Electrical Services

PO Box 2743
Montgomery Village

JAJ Lighting & Power LLC

12794 Captains Cove

Jaks Services Inc

9113 Glenville Rd
Silver Spring

James A Wheat & Sons Inc

7834 Beechcraft Ave
Gaithersburg

James Hemphill Company

37748 Legard Farm Rd

Jamison Caulking, Sealants & Services LLC

11308 Old Hopkins Rd
Clarksville

Jarboe Mechanical LLC

910 Leesburg Ct
Huntingtown

JAS Construction Group

2110 North Donnelly Street Suite 105

JAS HVAC SERVICES, LLC

P.O. Box 2471
Germantown

JBD Electric

3228 Duke Street

JC electric service

905 EASTERN AVENUE
Fairmont Heights

JCM Contractors

14697 Richard Simpson Ln

JD Contractors LLC

2512 N Scott St

JDT Management

Capital Heights

JeCo Inc.

6315-B Kenilworth
Riverdale

JERRY A DALRYMPLE CONTRACTOR

1050 CLAYHAMDEN RD
Prince Frederick

JF General Services

48 Standard Court
Gaithersburg

JI Electric

4003 Elmwood dr

JK Electric

14720 Flink Lee Rd.

JM Contractors

1012 N. Kennesaw Street

Joe Broomall

13204 Grenoble Dr
Rockville

John Krause Construction

11519 HG Truman Rd
Lusby

JP General Contractor

1604 Indiana Ave

JS Construction

5057 12th St S

Jugalva construction Inc

8917 Burke lake rd

JW Home Improvement

1390 Chain Bridge Rd

JWT Enterprises

Frederick

K & H Electric, Inc.

8920 Chesapeake Ave
North Beach

K G JOHNSON INC

4520 MACK AVE
Frederick

K4 Associates LLC

649B Lofstrand Lane
Rockville

Kargmans Inc

10429 Reisterstown Rd
Owings Mills

Karma Home Designs

1300 I street NW

Kass Remodeling

15209 Frederick Rd
Rockville

kb electrical works llc

5800 quantrell Avenue # 1004

KBM Mechanical Service INC

451 Hungerford Drive
Rockville

KCL Electric

4992 Linganore woods dr
Monrovia

Keith Development Systems Inc.

2000 Ednor Rd
Silver Spring

Kingdom Electrical Services LLC

101 Tulip Ct
Hagerstown

Kings Renovations

2300 Blueridge Ave
Silver Spring

Kinzie Back-up Generator Systems

8513 Meadowlark Ln
Bethesda

Kitchen Planners

12140 Parklawn Dr
Rockville

Kitchen Saver

10315 S Dolfield Rd
Owings Mills

KJS Construction, LLC

Upper Marlboro

KLG Services

3510 Moultree Place
Nottingham

Kolb Electric

3000 Ventrie Ct
Myersville

Kolb Electric Inc

5901 Blair Rd NW

Ko’s Auto Body & Service

11333 Old Baltimore Pike
Beltsville

KSN Contracting Inc

39925 Mrs Grave Rd
Mechanicsville

KurganContracting

11800 Old Georgetown Rd
Rockville

KUZMA CONSTRUCTION

10139 CEDAR LN
Kensington

KVA Electrical Contractors, Inc

4193 Minnesota Ave NE

L&G Quality Service LLC

4018 Woodland RD

L.GONZALEZ CONTRACTING LLC

315 N.Summit Ave
Gaithersburg

Labran Construction LLC.

14616 Peach Orchard Rd
Silver Spring

LARRY'S ELECTRIC CO

PO BOX 3501
Prince Frederick

LBI Home & Building Inspection

15547 Honey Locust Ln

LCL Services, LLC

5817 Clapham Road

Leveille Home Improvement Consultants Inc

18761 N Frederick Rd
Gaithersburg

LewLew Enterprises, Inc

1629 K Street, NW Suite 300

LG Handyman Service Company

2200 Chapman Road
Hyattsville

LICHTMAN COMMUNICATIONS

5257 BUCKEYSTOWN PIKE
Frederick

LifeHouse Builders

7910 Woodmont Ave
Bethesda

Limitless Design & Build, LLC.

12587 Fair Lakes Cir #263

Little Sparkie Electric LLC

PO Box 329
Mount Airy

LMNO Projects

12464 B Renner Rd
Keymar

Lofft Construction Inc

616 Kennedy St NW

Long Electric

6317 Quinn RD
Frederick

M & G General Contractor Inc

1633 Hopefield Rd
Silver Spring

M & M Electrical

205 Bucheimer Rd
Frederick

M R Electricians Inc

2277 Lewis Avenue
Rockville

M&G HOME SOLUTIONS LLC.

PO Box 432
Damascus

M&M Quality Home Improvements LLC

6032 Gholson Bridge Ct.

M.K.B. Remodeling

14360 Surrydale Dr

M.S. O'Neil & Sons Contracting

11206 Mountain View rd.

MAC General, Inc.

111 Carpenter Drive

Mai Electric LLC

6135F Edsall Rd

Manny's Handyman Service

11149 James Madison Hwy

MARK CHARLTON

Kensington

MARKETING INSTALLATION SYSTEMS

8170 CLAIBORNE DR
Frederick

Mart'z Electric Inc.

13715 Batchelors Drive
Silver Spring

Maryland Deck & Shed

8026 Green Tree Ct
Elkridge

Maryland General Contracting

20203 Goshen Rd. #303
Gaithersburg

Master General Home Improvement Inc.

4500 Sandy Spring Rd
Burtonsville

Master in Building

7205 Lockport Place

Matplex

5204 Sherier Pl, NW

Maxbuilt LLC

7740 Brink Rd
Gaitheresburg

MAXWELL ELECTRIC

20 OLD TIME DR
Prince Frederick

MC Commercial & Residential Construction llc

5926 BRYN MAWR RD
College Park

MC Handyman

4815-A Meridian Way
Frederick
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