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D
"Gemtleman who came to the house was professional and punctual. He was also nice. Unfortunately, there were 2 unsuccessful attempts/trips to fix the leak. After" the second appointment, we noticed leaking again a few days later and called the office and never got a return call to address our concern.

-MICHAEL W.

A
"The experience could not have gone better.
& Heating serviced my call within a day. The total cost of $289 ($390 - the $200 Angie's" List credit purchased for $99) was far less than I expected, and included an optional $40 purchase for a large container of bio-degradable drain cleaner.
took care of the clogged toilet within a minute and then went to on trying to fix the garbage disposal under the kitchen sink. To fix and replace, if necessary, the disposal would normally have been a routine job. But because he had to work in such a tight space under the sink, the job proved very time consuming and difficult, and
, with 40 years of plumbing experience, is no spring chicken. From the time he got off the truck, I could sense that I was dealing with an honest, conscientous, dedicated professional who took pride in his work. I especially liked the way he way provided a running commentary, in an informal and natural way, of everything he was trying to do. Also, at no additional cost, he treated me to a short summary of his colorful life story. When
was finished, he offered advice on how to run and maintain the new disposal, as well as how often to apply the drain cleaner. At one point,
mentioned that because he was paid a straight salary by the company, he had no incentive to sell the customer extra products or services that were not needed. This is certainly reassuring when dealing with any company and yet another reason to highly recommend
& Heating.

-Michael G.

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Local Articles in Baltimore

Hiring an HVAC service

The awkward-to-pronounce acronym stands for "heating, ventilation and air conditioning" which in many respects are completely different processes.

AIDGkAau1Ng

HVAC Maintenance

You can help your heating and cooling systems work more efficiently and last longer by tending to regular maintenance. Some things, like changing the furnace filter, can easily be done by the homeowner.

In Florida, air conditioners are great for cooling your home and removing humidity. But over time, damp air can cause mold to grow. (Photo courtesy of Angie's List member Chris O. of Orlando, Florida)
Air Duct Cleaning, Heating & A/C

A pro sheds some light on how to clean up and breathe easy, using a little old-school know-how.

Ground source geothermal units use an underground loop system to bring heat from the earth into the home during the winter and pull heat from the home back into the earth during the summer.
Heating & A/C

Angie Hicks responds to a member question about whether drought conditions can influence the way a geothermal HVAC system functions.

A properly working system should never leak refrigerant. Hire a pro to assess your HVAC system for leaks.
Heating & A/C

Angie Hicks responds to a member with questions about plugging an air conditioner refrigerant leak, and how R-410A is different from R-22.

dehumidifier in basement
Heating & A/C

Your home's relative humidity should be 45 to 50 percent. If it's higher, consider a dehumidifier. A whole house model should be installed by a qualified pro.

Angie's Answers

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No one can tell you what another contractor will charge. There is no one set price for heating and air-conditioning equipment installation. One of the major factors that affect your price is its size. No one can tell you what size equipment you’ll need without doing a load analysis on the home. That calculation essentially determines the insulation value of the home, i.e... What is the heat gain of the home, what are some other prevailing factors like room equipment, solar gain, or natural shading? You can compare prices between contractors to gauge what your cost would be between contractors, but this is a little tricky to do. Let me explain a little more. Let's say you get an installation quote of $5050.00 from contractor “A” who employs three technicians and operates two trucks. He also runs his operation from home. Contractor “B” charges $6200.00 to do the same job but has 10 employees and 5 trucks. He works out of a rental unit and offers his people a little bit better of a benefit package to recruit highly motivated workers. Everything else being equal (equipment size, SEER rating, furnace efficiency, brand name and additional material—other things that affect the price), is either one of these contractors defrauding you? No, their overhead is different. All these things play into a company’s labor rate. Just be aware of your expectations when it comes to performing any kind work in your home. If you want to pay an extremely low-inexpensive price below the average installation cost in your area then you are highly likely to get the quality of work that comes with that cost. Remember cheaper is not better!

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The only thing of importance, is the hvac professional you choose to use. Alot of manufacturer's pieces are built relatively the same, and will last about the same amount of time. The thing that matters most is what you can not compare between companies, and that is the installation. Purchasing a system is not like purchasing a car, where no matter where you buy it, they are all the same. Each installation is different, and usually what you are paying for is the level of expertise, and quality of the installation, the company who will actual give you the warranty, and the comfort that you will receive. Manufacturers warranties disappear every day. They always have a loophole where they can get out of paying, but your local dealer wants to keep you happy for future work, and to protect his reputation in the communiy. Look up 4 year old Nordyne and Goodman warranty problems. Choose the HVAC professional first. It will cost you the least in the long run. I have had to totally redo plenty of installations that were just performed because of an uncomfortable customer, and a system that keeps breaking down. The equipment is only as good as it's installation, and over 70% are not installed correctly.
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Yes Jupiter. It depends on the severity of the situation, is the mold encapsulated in the insulation. If yes, than replace [insulation] it with new. Is it on the casing of the heater? If yes, clean it with a mold neutralizing metal cleaner. It's not a matter of finding something or someone to clean or address the existing mold. It's a matter of finding a contractor to rectify what is causing the mold grow. It's coming from excessive moisture in the air-handler unit. I can say with 100% surety you’re dealing with poor airflow and/or incorrect equipment sizing! Either issue will cause excessive icing of the evaporator coil, which leads to excessive condensate water in the system. The condensate will eventually overflow the drain pan leaving stagnant water in the air-handler housing, which leads to mold growth. I would not let any contractor do any kind of temporary repair, add any device like a UV light or air-cleaning product until the aforementioned is corrected. I talk a lot about this in my videos and on my website. It is the result of improper system design from unqualified contractors. There is a reason why some guys cost more than others, and this is one reason why!




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I'd rate them equal,or close,as with several other brands. I'd be more concerned about the difference in installation and service down the road. Difficult to determine the difference ,but asking for detailed info about their installation,may convince you to choose one over the other.

The Dept. of Energy states that poor installations can cause a 30% efficiency loss! Plus with Gas their are saftey issues,venting properly etc.,and of couse the need for a "low Level" Carbon Monoxide Alarm.
?
I think maybe you are confusing SEER, which is an efficiency-related rating (higher SEER means more effective use of the electric power used to compress the gas), and TONS rating, which is a measure of the total cooling power of the system. (Tons used to mean how many tons per hour of ice was used in evaporative cooling building systems - a Refrigeration or Cooling Ton equals 12,000 Btu/Hour of energy exchange. A BTU, which is another antique measure but still used, is the energy needed to change the temperature of a pound of water one degree fahrenheit. Unfortunately, because of varying humidity and evaporation, this is not readily related to house air heating or cooling without a lot of assumptions and some computations. Relating this to today's world - the Manuals BayAreaAc referred to account for all these energy conversions and determine an estimated cooling (or heating) requirement for your specific house. The type of construction, solar exposure, general climatic conditions such as average temperatures, humidity, and hottest and coldest normal ambient temperatures and desired inside temperture are all taken into account in the more sophisticated versions of the analysis, so there is no "standard", though a rough old rule of thumb was about 1 ton of cooling per 500SF of house. Obviously, this was a WAG only because it did not account for insulation, type of roofing, whether you live in Alaska or Miami, etc. The ACCA manuals do a very simplified form of evaluation to arrive at a "design", which generally will be adequate. OF course, highly precise calculations are not really needed because A/C units generally come in even ton ratings - so if you are at say 2.6 ton requirement you will be getting a 3-ton unit anyway. SEER ratings are not a direct measure of efficiency, but the relative difference between ratings gives you good idea of the unit's relative efficency in using electricity - so a 16 SEER should be about 19% more efficient (so roughly comparable lower electricity bill) than a comparably sized 13 SEER unit. 13 SEER is the lowest efficiency currently allowed to be built for general use, 19 SEER is about the highest efficiency made by pretty much all manufacturers, and about 25 SEER is the highest rated though very pricey shelf-item units, though special construction custom units can reach about 30 SEER. Note however, like any government sponsored rating, much of it is hooey when you get down to it - for instance, SEER ratings are figured based on 80 degree inside air temp and 82 degrees outside, when that is far from the normal case of mid to low seventies inside and high eighties or above outdoors. This makes the absolute SEER rating meaningless, but relative numbers still have meaning in comparing units. Note these efficiency ratings are for conventional air conditoners and heat pumps working in ambient air conditions. Ground sourced Geothermal or lake/river exchange cooling units, though initially more expensive in most cases, can greatly exceed the air-exchange unit efficiencies because they are exchanging heat with cold natural water rather than with a high-temperature outside air, and instead of continually compressing a gas are just circulating cold water. I worked on one geothermal cooling project which had almost infinite efficiency, which of course makes no sense - but the only power was for sensors and a control valve as the water flow was single-pass under gravity flow, so no power was used to circulate the water.
?
YOU.
You bought the home after an inspection that told you there were issues?
Every state has different laws regarding home purchases, contact your real estate agent to find out what remedies may apply.
THIS IS EXACTLY why you hire QUALIFIED and LICENSED contractors.

Doug
AirTekHP
CSLB# 824188 

Hvac reviews in Baltimore

A

Rating
My thermostat was originally installed on an exterior wall. I finally got around to moving it and I couldn't have been happier with
Baltimore  HVAC Contractors Provider Name Locked
& Air. I have an old Baltimore row home, home improvements are never easy, there is always something behind the walls that you weren't expecting. Even something as
Baltimore  HVAC Contractors Provider Name Locked
as moving a thermostat proves to have added complicating factors.
Baltimore  HVAC Contractors Provider Name Locked
was great, when he ran into an unusual situation, he just worked around it to make sure I was satisfied with the final product. From making my initial appointment to the instillation everyone was incredibly friendly and helpful. I would recommend them in a heartbeat.
- Katherine G.
D

Rating
Almost every part of the process involved me hunting down the sales person. Did not respond to calls most of the time, unless made several times. After all installed, was supposed to receive credit from
Baltimore  HVAC Contractors Provider Name Locked
(billed through
Baltimore  HVAC Contractors Provider Name Locked
) re: warranty from boiler was paid for during purchase of new boiler, so was to be removed from my bill. Was never done until I called
Baltimore  HVAC Contractors Provider Name Locked
myself.
Was supposed to get a call back from the sales person again after installation re: radiators extremely noisy and leaking, and the new vents were not set to match the way the old ones were before they removed them. Sales person said that he would have someone contact me or call me back about this, because he thought that my boiler just needed skimming or something. Never called back. That was in January, It is now March. I paid alot of money to a company called "All steamed Up" (who were great btw) to set all of the vents so that we got an even flow of heat to each area. Now I have put in another call to have them come out and do it again for these new vents.
Other than not paying attention to the existing settings on the vents that were removed, when installing the new vents, and the sales person' inattentiveness, the installers did a great job. They were very polite and helpful.
City never did do an inspection either, so I am hoping it is a good job with the inspection...

- TRACEY R.
A

Rating
Inspection went well. Provider was very courteous and professional. I had to pay additional fees for freezone to be added to the heat pump which was very low. Provider explained all aspects of the inspection.
Baltimore  HVAC Contractors Provider Name Locked
did a good job and I would use them again.
- Cheryl R.
A

Rating
I knew my central a/c unit did not have a lot of life left when I moved into my house in September 2008. In the spring of 2012 I spent about $600 on free-on just to get it through that year, so I knew I needed to replace it in 2013. I called three provider's from Angie's list to get quotes. All the quotes were fairly similar, but I went with
Baltimore  HVAC Contractors Provider Name Locked
because of the reviews I read on Angie's List as well as the good feeling I got during my multiple conversations with them.
Everything went great with
Baltimore  HVAC Contractors Provider Name Locked
. They responded quickly to my first phone call and came out within a few days to a week to give me a quote (it was quite a while ago so I don't remember exactly).
Baltimore  HVAC Contractors Provider Name Locked
came out and did a thorough review of what I had, the size of my house, how things were set up, duct work, etc. My initial intent was to just replace the a/c unit.
Baltimore  HVAC Contractors Provider Name Locked
educated me on the inefficiency of having a new high efficiency a/c unit coupled with an older less efficient furnace (furnace was about 10 years old). He also told me about available rebates through the manufacturers and BGE. I decided to have him quote both just the a/c unit as well as another quote for both the a/c unit and the furnace. I also asked him to quote both a 80% efficiency furnace and a 95% efficiency unit, but we decided that due to my current duct work I would not really get the full benefit out of the 95% furnace. It turned out that the difference in price between the a/c only ($4500) and installing both ($6300) was much less than I anticipated when all the discounts/rebates were applied.
Baltimore  HVAC Contractors Provider Name Locked
also told me out about available 36 months financing at 0% interest, so I went the finance route and had both installed.
Baltimore  HVAC Contractors Provider Name Locked
made the paperwork process very easy also.
Baltimore  HVAC Contractors Provider Name Locked
's crew arrived right on time first thing in the morning and got right to work.They were clean, efficient, not overly noisy, easy to work with, and were done before lunch. I believe there was one or two things they needed to ask me about during the job, but nothing major. All the lines they had to run were done in an unobtrusive way so as to not create an eyesore (my basement is unfinished at the moment but none of the lines are in the way for when I do finish it, which is in the plans). All in all I was very pleased with the job and the service level and would definitely recommend
Baltimore  HVAC Contractors Provider Name Locked
as a potential provider (and actually have once already).
- Dan D.
A

Rating
They arrived on time and ready to do the job. Service was performed in under an hour including an unscheduled repair on the vent duct work. Very pleased with the level of service.
- Michael C.
C

Rating
They came out quickly. The technician was very polite and seemed thorough. He said I needed a new furnace. He said it was very timely and important because there could be a carbon monoxide leak. I got a few more consultations, but no other company found what Supreme found. I wasn't able to confirm what the technician from Supreme found. If I had gone with Supreme I may have bought a furnace a few years too early. I still have a my same furnace and it's still working.
- MEREDITH P.
A

Rating
Each individual was friendly and professional. Always on time, did neat work, left work area clean, addressed any questions.
- Charles C S.
A

Rating
Had a problem with them not being able to be accessed because builder put them behind a wall.
Baltimore  HVAC Contractors Provider Name Locked
worked hard to get me the best deal he was very polite and punctual.
- Kelly M.

All HVAC Contractors in Baltimore

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

1st class handyman

portship rd
Dundalk

1~866~PLUMBER

406 Tollgate Road

24/7 Express Repair Network & Hotline

2505 Lord Baltimore Dr.
Windsor Mill

3-D PLUMBING & HEATING INC

P.O. Box 1462
Bowie

A & A ABILITY HEATING

1811 JACKSON ST
Baltimore

A & A HEATING OIL CO

4625 ASBURY AVE
Baltimore

A & J Home Remodeling

3212 South 13th Rd

A & S Mechanical Inc

PO Box 1029
Chesapeake Beach

A BEST REFRIGERATION SVC

PO BOX 407
Owings Mills

A J Deluca Contractors Inc

1932-B Liberty Rd
Sykesville

A M Gable

104 Dale Rd
Pasadena

A Plus Comfort Inc.

1601 Dulaney Dr
Jarrettsville

A Quality Heating & Air Conditioning Inc

1584 Deer Park Rd
Finksburg

A R CROWELL PLUMBING

906 Montgomery Street
Laurel

A TEAM HEATING & AIR CONDITIONING

7816 HARFORD RD
Parkville

A#1 Abatement Inc

4420 N Point Blvd
Sparrows Point

A&B Luck Plumbing and Heating

10001 Lewis Dr
Damascus

A&B Refrigeration Services

5343 Long Corner Rd
White Hall

A&J CONSTRUCTION

114 BIRCKHEAD ST
Baltimore

A-1 REPAIRS LLC

11006 VEIRS MILL RD
Silver Spring

A-Air Service

Route 140 (off of)
Finksburg

A-Z HEATING AC & REFRIGERATION INC

7810 Liberty Rd
Gwynn Oak

A/1 Heating & Air Conditioning Inc

406 Lucabaugh Mill Rd
Westminster

A/C Filters 4 Less

4613 N. University Drive, #236

AAA AIR CONDITIONING & HEATING

2907 TAYLOR AVE
Parkville

AAA FURNACES & TRENCHING SVC

3949 BERT KOONTZ RD
Taneytown

AAD Mechanical

P.O. Box 543
Pasadena

ABILITY AC & REFRIGERATION

623 KILMARNOCK TRL
Bel Air

ABOUT TIME WINDOWS

100 N ESSEX DR
Essex

ABSOLUTE COMFORT

PO Box 157
Harwood

AC & Appliance Repair

3525 Saint James Rd
Windsor Mill

ACADIA PLUMBING LLC

1717 S CHARLES ST
Baltimore

Accel Plumbing and Heating

14029 Monticello Dr
Cooksville

ACCUTEMP HEATING & AIR CONDITIONING

817 SELBY BLVD
Edgewater

ACE AIR CONDITIONING & HEATING

611 WAMPLER RD
Middle River

ACE METAL PRODUCTS INC/SSI SERVICES LLC

4134 OAK HILL AVE
Nottingham

ACE OF DIAMONDS CHIMNEY SWEEP

6921 Golden Ring Rd
Rosedale

Adams Heating And Air Conditioning

10630-B Riggs Hill Rd
Jessup

ADDED PERFORMENCE INC

8998 Fort Smallwood Rd
Pasadena

Adiabatic Air Associates LLC

312 Terwing Dr
Arnold

ADL HEATING & AIR CONDITIONING

1681 HENRYTON RD
Marriottsville

ADRIAN AIR

9471 SEVEN COURTS DR
Nottingham

ADVANCED CHIMNEY SOLUTIONS

3710 INGLESIDE DR
Jarrettsville

ADVANCED HEATING AND COOLING

212 Business Center Dr
Reisterstown

ADVANCED SERVICE AIR COND

7201 Mountain Church Road
Middletown

ADVANTAGE

531 MUNROE CIR
Glen Burnie

AERO AIR CONDITIONING

PO Box 15469
Middle River

AERO HEATING CO

2003 OLD OREMS RD
Middle River

Affordable Heating & Cooling

1011 Morgan Station Dr
Severn

AG appliance repair

2812 rockrose ave

Ahmed Construction LLC

1940 Greengage Rd
Baltimore

Air Comfort Pros

Gaithersburg

Air Control LLC

1774 Westwind Way

AIR GOTT SERVICES INC

605 B & A BLVD
Severna Park

Air Source Inc.

2611 Arthur Avenue
Eldersburg

AIR SPECIALTIES INC

3840 Hooper Rd
New Windsor

AIR SYSTEMS INC

806A BARKWOOD CRT
Linthicum Heights

Air Tech Refrigeration & Mechanical Contractors, I

404 BOWLEYS QUARTERS RD.
Middle River

AIR TECHNOLOGIES INC

1162 Oak View Dr
Crownsville

AIR TEMP INC

8352 SCHMIDTS LN
Pasadena

AIR ZONE SYSTEMS INC

1303 Avondale Rd
New Windsor

AIRE-CRAFT HEATING & COOLING

1215 67th Street
Rosedale

AIRECO SUPPLY INC

2232 GREENSPRING DR
Lutherville Timonium

AIRECO SUPPLY INC

11445 CRONRIDGE DR
Owings Mills

AIRECO SUPPLY INC

8515 KELSO DR
Essex

AIRECO SUPPLY INC

1102 RUSSELL ST
Baltimore

AIRECO SUPPLY INC

8860 Gorman Road
Laurel

AIRECO SUPPLY INC

1805E Virginia St
Annapolis

AIRMAN AIR CONDITIONING FRNC

215 RITCHIE LN
Glen Burnie

AIRPRO MECHANICAL SERVICES

3351 CORRIDOR MARKET PLACE
Laurel

AIRSTAR CORP

8869 MISSION RD
Jessup

Airtron Heating & Air Conditioning

5123 Pegasus Court
Frederick

Airwiz VideoCam Duct Cleaning

22700 Ridge Rd
Germantown

AJ Michaels

4512 York Rd
Baltimore

Albrecht Home Improvements

1215 Oak Harbor Ct
Pasadena

Alcap Inc

54 Milburn Cir
Pasadena

ALIANCE FUEL CO.

2700 LOCH RAVEN RD
Baltimore

All American AC & Heating

19515 White Ground Rd
Boyds

ALL AMERICAN SVC

260 SIGMA DR
Harwood

ALL APPLIANCE PARTS

2 INGLESIDE AVE
Catonsville

All Good Home Inc

5 Ridout St
Annapolis

ALL PRO HEATING & AIR COND

728 BALTIMORE PIKE
Bel Air

ALL PRO PLUMBING AND HEATING

3959 PROSPECT RD
Street

ALL PRO SERVICE

PO BOX 115
Davidsonville

All Pro Services Inc

1215 Ritchie Rd
Capitol Heights

all service pro

Silver Spring

All Services Heating & Cooling, Inc.

6407 Fort Smallwood Rd
Baltimore

ALL STATE PLBG HTG & COOLING

1 E CHERRY HILL RD
Reisterstown

ALL STATE PLBG HTG & COOLING

6736 HOLABIRD AVE
Dundalk

ALL STATE PLBG HTG & COOLING

206 FRANKLE ST
Brooklyn

ALL STATE PLBG HTG & COOLING

4505 LEEDS AVE
Baltimore

ALL STATE PLUMBING

PO BOX 125
Upperco

All State Plumbing Heating & Cooling INC

605 Ritchie Hwy
Severna Park

All Steamed Up, Inc.

310 CENTRE AVE
Towson

ALL TRADE MAINTENANCE INC

4 SUNDAY CT
Reisterstown

ALLIED PLUMBING & HEATING

PO Box 4653
Lutherville Timonium

Allied-Phillips, Inc.

2403 Old Mountain Road Central
Joppa

ALLSTATE PLUMBING HEATING

206 FRANKLE ST
Brooklyn

AllTech Services

1323 Shepard Dr

ALLTECK

983 DUVALL HWY
Pasadena

Alpha Plumbing

8813 Fort Smallwood Rd
Pasadena

ALPHA PLUMBING & DRAIN SERVICE

18004 Meadowsweet Ct.
Sandy Spring

ALSSON SERVICE CO

2550 BACHMAN VALLEY RD
Manchester

AMANA HEATING & AIR COND

1290 BAY DALE DR
Arnold

Amazing Heating & Air Conditioning Inc

1922 Light Street
Baltimore

Ambassador Services Inc

10330 S Dolfield Rd
Owings Mills

AMBERLY CO

250 CHARITA WAY
Severna Park

Ambient Cooling & Heating LLC

PO Box 1191
Glen Burnie

American Contracting Services Inc

1620 Providence Rd
Towson

American Custom Contractors Inc

15728 Crabbs Branch Way
Rockville

American Heating & Air Conditioning

1741 Laurel Brook Rd
Fallston

AMERICAN HEATING & COOLING

2539 MOUNTAIN RD
Pasadena

AMERICAN HOME SERVICES

34 Shining Willow Way
La Plata

American Home Shield

889 Ridge Lake Blvd

American Leak Detection - Maryland

16499 Frederick Rd
Woodbine

American Mechanical Repair

3042 Edgewood Ave
Parkville

American Professional Chimney & Masonry

4519 Buchanan St.
Hyattsville

American Sheet Metal Heating & AC

3 S Carolina Ave
Pasadena

AMERICAN STANDARD

8229 CLOVERLEAF DR
Millersville

Anchor Contracting, Inc

767 Shore Dr
Joppa

Annapolis Air Corp

5973 Sandy Ridge Ct
Elkridge

Anthony Mechanical & Electrical, LLC

938 Holy Cross Rd
Street

Antwerpen Nissan-Clarksville

12451 Auto Dr
Clarksville

APOLLO REFRIGERATION

2227 EASTERN AVE
Baltimore

AppliancePartsPros.com

16501 Ventura Blvd Ste 500

APPOLLO HEATING & PLUMBING

3678 FALLS RD
Baltimore

AQUA AIR HEATING & COOLING CO

7349 GAITHER RD
Sykesville

AQUA PLUMBING & HEATING CO

944 S CLINTON ST
Baltimore

Archangel Remodeling

642 Wayward Dr
Annapolis

Arctic Air Heating & Cooling LLC

844 White Ave
Linthicum Heights

Arctic Air Solutions LLC.

P.O. Box 19925
Baltimore

Arctic Plumbing & Air

8328 Veterans Highway
Millersville

ARTIC AIR

4309 HARFORD RD
Baltimore

ARTIC COOLING & HEATING

105 EARLEIGH WOODS LN
Severna Park

Artisan Construction Inc

1610 S Shore Pkwy
Pasadena

Arundel Cooling Heating & Electrical Co Inc

707 Nursery Rd
Linthicum Heights

Aspect Contracting

7823 Wilson Ave
Parkville

Aspen Air

5383 Annapolis Dr
Mt Airy

Assured Contracting, Inc.

6831 Montgomery Road
Elkridge

Assured Mechanical, LLC

821 Chatfield Rd.
Joppatowne

At Your Service Heating & Cooling

8317 Bufflehead Drive
Baltimore

ATC Welding Service

7319 Margate Ct
Glen Burnie

Atlantic Acquisitions, LLC

53 Odeon Ct
Parkville

Atlantic Duct Cleaning

22875 Bryant Ct, Suite 120

Atlantic Environmental Solutions

6400 Frankford Ave
Baltimore

AWA MECHANICAL INC

1445 N ROLLING RD
Catonsville

AZTEC PLUMBING AND HEATING LLC

2 STEWART WAY
Severna Park

B & B AC & HTG SVC CO INC

6725 SANTA BARBARA CT
Elkridge

B & B AIR CONDITIONING & HTG

9687 GERWIG LN
Columbia

B & B Heating and Cooling Contractors, Inc.

4475 Printers Ct
White Plains

B & B TECHNOLOGIES LLC

PO BOX 1264
Millersville

B & L HEATING & AIR CONDITNING

3444 OLD TANEYTOWN RD
Taneytown

B P HEATING A/C & REFRIG

526 GLADHILL RD
Odenton

B P SOLAREX

989 CORPORATE BLVD
Glen Burnie

B. G. E. Home Products & Svcs

1201 1/2 68th St
Rosedale

B.A.R appliances AC LLC

30 Acorn Circle
Towson

Bair Necessities

763 Rte 3 N
Gambrills

Barstow & Sons Heating And Cooling

PO Box 333
Severna Park

Basement Masters

1680 E Gude Dr
Rockville

BAXTER MECHANICAL SVC

535 OLD WESTMINSTER PIKE
Westminster

BAY HEATING & COOLING LTD

37 HUDSON ST
Annapolis

Bayne Investment

327 Montrose Ave
Essex

Bayport Plumbing And Heating

5004 Tartan Hill Rd
Perry Hall

BBR MECHANICAL SVC INC

1543 MORSE RD
Forest Hill

BECK ENVIRONMENTAL SVC

1994 MORELAND PKWY
Annapolis

BEE JAY REFRIGERATION INC

4216 SPRINGWOOD AVE
Baltimore

BEL AIR HEATING & COOLING INC

1610 CONOWINGO RD
Bel Air

BEL AIR REFRIGERATION

4420 SLATE RIDGE RD
Whiteford

BEL AIR REMODELING

P.O. Box 726
Bel Air

Belair Engineering & Service Co Inc

15881 Commerce Ct
Upper Marlboro

BELTS BUILT CONTRACTING

115 METISPA DR
Severna Park

BELTSVILLE HEATING & AC

11610 BALTIMORE AVE
Beltsville

Beltway Builders

8328 Veteran Hwy
Millersville

Ben Franklin Plumbing LLC

10331 S Dolfield Rd
Owings Mills

Berith Builders

13074 Langley Rd
Bryantown

Beschen's Handyman Service

1456 Foxwood Ct
Annapolis

Bethesda Systems

4712 Rosedale Ave
Bethesda

Bexar Maintenance Supply

1275 Red Bluff Rd.

Bey's Refrigeration & Heating

4131 Hayward Ave
Baltimore

BEY'S REFRIGERATION & HEATING

7913 CHIPPER RD
Windsor Mill

BGE COMMERCIAL BUILDING SYS

1530 CATON CENTER DR
Halethorpe

BGE Home

1409 Tangier Dr
Middle River

BIBB-HENRY ALBERT CO

6 CHURCH LN
Pikesville

BILLS REFRIGATION & AIR COND

3102 EMMORTON RD
Abingdon

BILT-RITE CONTRACTORS INC

1833 York Rd
Lutherville Timonium

BINDER PLUMBING & HEATING INC

8612 OLD HARFORD RD
Parkville

Blair Construction LLC

301 Najoles Rd
Millersville

BLC Construction Enterprises Inc

3705 Bank St
Baltimore

BLEVINS HEATING & COOLING INC

1312 E Churchville Rd
Bel Air

Blue Dot Services - 8554

125 Industry Ln
Forest Hill

BMC Clower Heating & Air Conditioning Inc

9162 Brookville Rd
Silver Spring

BMC Services LLC

3601 Commerce Dr.
Halethorpe

Bmore Green LLC

8203 Thornton Rd
Towson

BMW Baltimore Bimmer

6254 Kenwood Avenue
Rosedale

Bob Booth Remodeling

410 Barnes St
Bel Air

BOB BOWERS INC

51 JOHN ST
Westminster

Bob Drumm Heating and Cooling

27 Ballman Ct
Brooklyn

Bob Drumm Heating and Cooling

27 Ballman Court
Baltimore

BOB FOX COMMERCIAL

5502 CARVEL ST
Churchton

Bob Fox Services

5518 Muddy Creek Rd.
West River

Bogan's Plumbing / PlumbCrazy

1302 Continental Dr
Abingdon

Boston Builders, Inc

801 Sullivan Rd
Westminster

BOSTON REALTY INC

8029 Montwood Rd
Windsor Mill

Bottom Line Remodeling

2909 Stockton Rd
Phoenix

Bowie Shell

15651 Annapolis Rd
Bowie

Bowie Siding and Roofing Inc

13109 14th St
Bowie

Brad4Cad LLC

5657 Utrecht Rd
Baltimore

BRENNAN HEATING & AIR COND

10429 SHADY ACRES LN
Laurel

BRIAN'S ROOF REPAIR LLC

WALKER RD
Freeland

BRICKFRONT PROPERTIES LLC

7409 QUAIL RIDGE LANE
Bowie

BRIDGEPORT HEATING & COOLING

6571 KALI DR
Sykesville

BROADHEAD MECHANICAL LLC

9303 DECATUR PL
Laurel

Brookland Plumbing

1611 Monroe St NE

BROOKLYN REFRIGERATION INC

762 OAK GROVE CIR
Severna Park

BRUCE CLARK FUEL CO

2815 MERRYMANS MILL RD
Phoenix

Bruce Solomon Plumbing, Heating & Air

12452 Owings Mills Blvd
Reisterstown

Brucksch and Sons Contracting, LLC

1617 Kimber Rd
Glen Burnie

BRYAN PLUMBING HEATING & WATERPROOFING

7020 Greenbank Rd
Middle River

BRYANT MID-ATLANTIC

9601 PULASKI PARK DR
Middle River

BRYANT MID-ATLANTIC

7010 DORSEY RD
Hanover

BST Plumbing & Heating

8802 Lew Wallace Rd
Fredrick

BTU MECHANICAL

2135 ESPEY CT
Crofton

BUDGET HEATING & AIR COND

11607 TERRY TOWN DR
Reisterstown

Budget Movers Inc

2932 Willoughby Rd
Parkville

Burtonsville Fuel Co Inc

15408 Old Columbia Pike
Burtonsville

C & C MECHANICAL CONTRACTORS INC

2755 W CHESAPEAKE BCH RD
Owings

C & D Sheet Metal Inc

3739 Federal Hill Rd
Jarrettsville

C P HEATING & AIR CONDITIONING

1329 POST RD
Havre De Grace

C PHILIP AMENDT JR CO PLUMBING & HEATING

2901 HAMILTON AVE
Baltimore

CALIFORNIA AIR

5103 BUSHEY RD
Sykesville

CANTON'S PLUMBING HEATING

10 BAKER ST
Glen Burnie

Capezio Contractors Inc

8550 Veterans Hwy
Millersville

Capital Improvement Contractors

2212 Ridge Rd
Reisterstown

Capitol Boiler Works

7921 Woodruff Ct

Capitol Chimney Service LLC

4408 Bennion Rd
Silver Spring

CAPSTONE CONSTRUCTION OF MARYLAND

6488 Cornwall Dr.
Eldersburg

Care Services Inc

19 W Sunset Avenue
Williamsport

Carney Tire and Car Care Ctr

8743 Satyr Hill Rd
Parkville

CARRIER AIR CONDITIONING CO

7200 RUTHERFORD RD
Windsor Mill

CARRIER MID-ATLANTIC

11221 DOLFIELD BLVD
Owings Mills

CARRIER MID-ATLANTIC

7010 DORSEY RD
Hanover

CARRIER MID-ATLANTIC

9601 PULASKI PARK DR
Middle River

Carroll Home Services

2700 Loch Raven Rd
Baltimore

CARTER MECHANICAL

1029 E PATAPSCO AVE
Brooklyn

CATONSVILLE PLUMBING

651 RITCHIE HWY
Severna Park

CATONSVILLE PLUMBING CONTRS

5305 OLD COURT RD
Randallstown

CDS MECHANICAL SVC

2102 BROMLEY CT
Crofton

CENTRAL AIR CONDITIONING CONTR

9195 RED BRANCH RD
Columbia

CENTRAL MD HEATING & COOLING

215 RITCHIE LN
Glen Burnie

CENTRAL TECH SVC INC

9592 Deereco Rd
Lutherville Timonium

CES Group

2508 Mountain Rd
Pasadena

CES Heating, Cooling and Electrical

2508 Mountain Rd
Pasadena

CGI Home Solution LLC

21800 Towne Center Pl

Chandler's Collision Center

9640 Gerwig Ln
Columbia

Charles A Klein & Sons

5220 Klees Mill Rd
Sykesville

CHARLES A KLEIN SVC INC

11410 1/2 REISTERSTOWN RD
Owings Mills

CHARLES E NORRIS

PO BOX 51
Lutherville Timonium

CHASON SERVICE ENGINEERS

1947 GREENSPRING DR
Lutherville Timonium

CHEGGHILL MECHANICAL

12800 STATE ROUTE 144
West Friendship

Chesapeake Controls Services

6715 Park Heights Ave
Baltimore

CHEVY CHASE REMODELING

7722 Whiterim Ter
Potomac

CHILL-CRAFT

2600 CABOVER DR
Hanover

CHRIS GONCE CO

506 Durango Rd
Catonsville

City Renovations & Remodeling LLC

938 E Swann Creek Rd
Fort Washington

Clarksville Construction Services

9050 Red Branch Rd
Columbia

CLASSIC HEATING & AC INC

505 WINTER VIEW DR
Bel Air

ClemAIR Heating and Cooling LLC

10803 Highwood Pl
New Market

CLIFTON HVAC SYSTEMS

3501 CLIPPER RD
Baltimore

CLIMATE CONTROL SERVICE CO

12227 DISTRIBUTION PL
Beltsville

CLIMATE MANAGERS

3236 1/2 MOUNTAIN RD
Pasadena

Clinton Electric Co Inc

1850 York Rd
Lutherville Timonium

CLYDE E KING CO

720 ALDINO STEPNEY RD
Aberdeen

CMS Urethane Sytems Inc

239 Fell Rd
Rising Sun

COASTLINE DISTRIBUTION

8700 LARKIN RD
Savage

COLD STAR HEATING & COOLING INC

8204 Champion Ct
Pasadena

COLDSPRING CO INC

4409 TOWANDA AVE
Baltimore

COLDSTAR HEATING & COOLING INC

8204 Champion Ct
Pasadena

Coldwright Plumbing & Heating

503 Garnett Rd.
Joppa

Columbia Auto Collision Center Inc

9245 Berger Rd
Columbia

COMFORT AIR

49 VENTURE WAY-
Sykesville

Comfort Always LLC

7833 Camp Rd
Pasadena

COMFORT EMERGENCY SVC

9529 RIDGELY AVE
Parkville

COMFORT MASTER

p.o. box 449
North East

Comfort Systems Inc

9111 Perryvale Rd
Nottingham

COMFORT SYSTEMS USA INC

2105 EMMORTON PARK RD
Edgewood

COMFORT TEMP HEATING & COOLING

140 BACHMANS VALLEY RD
Westminster

Comforts of Home Heating & Air Conditioning

20 Belle Grove Rd
Catonsville

COMMUNITY COOLING & HEATING

101 HOLSUM WAY
Glen Burnie

Complete Auto Repair Service Inc

320 Baltimore Pike
Bel Air

Complete Comfort Services LLC

10510 Scaggsville Rd
Laurel

Complete Kitchens & More

459 Baltimore Blvd
Westminister

CON AIRE INC

9621 HARFORD RD
Parkville

CONCRETE N COUNTERS

4402 KESWICK RD
Baltimore

Constant Power, LLC

2203 Commissary Circle
Odenton

Constellation Home

3560 Gillespie Drive, Suite A

CONSUMER APPLIANCE

6625 HUNTER RD
Elkridge

Contemporary Air Systems, Inc.

613 Eastern Boulevard
Baltimore

Continental Services

2192 Solomons Island S
Prince Frederick

CONTROL HEATING

PO Box 968
Stevensville

CONTROL MANAGEMENT SVC

5483 BROOKS WOODS RD
Lothian

CONTROL SYSTEMS SVC INC

2810 POT SPRING RD
Lutherville Timonium

CONTROL TECH INC

3242 ESTHER PL
Baltimore

CONTROLLED CLIMATES

28 MCDONALD CHAPEL CT
Gaithersburg

controlled climates

341 edgewater rd

controlled climates

341 edgewater rd

COOKS FUEL

2155 NORTHBRIDGE AVE
Curtis Bay

COOL BREEZE

76 E MAIN ST
Westminster

Cool Breeze Inc

5315 Klee Mill Road S
Sykesville

COOL TECH AIR SERVICES INC

100 WAIBLE RD
Port Deposit

COOL-RITE SVC CO

10705 JOHNS HOPKINS RD
Laurel

Cooling and Combustion Specialist

2581 Cedar Ridge Dr
Westminster

COOLMAN AIR COND & HEATING SVC

7807 WESTMORELAND AVE
Parkville

COOLWAY REFRIGERATION CO

9505 PERRY HALL BLVD
Nottingham

Cooper HVAC

8 Lynnridge Ct
Manchester

CORBIN FUEL

1723 CHURCHVILLE RD
Bel Air

CORBIN FUEL CO

33 ELLENDALE ST
Bel Air

Cornett Enterprises

102 St Francis Ct
Severna Park

Corporate Hvac

1225 Reece Rd.
Severn

COTHERMAN AIR COND & CONSTR

317 MAIN ST
New Windsor

COUNTY COOLING & HEATING

200 CROCKER DR
Bel Air

CRAFT METAL WORK

5400 PARK HEIGHTS AVE
Baltimore

CREEL MECHANICAL INC HTG & AC

7283 LISA DR
Marriottsville

CroppMetcalfe

8421 Hilltop Rd

Cross Keys Exxon

4434 FALLS ROAD
Baltimore

CROWN REFRIGERATOR SUPPLY INC

1221 67TH ST
Rosedale

CRYSTAL COOL INC

4701 BELLE GROVE RD
Brooklyn

CSSILLC

3356 FORT MEADE RD
Laurel

CUSTOM MECHANICAL SVC

1232 OLD DORSEY RD
Harmans

D & K AIR SYSTEMS

1410 E Joppa Rd
Towson

D & R HEATING & AIR COND

2247 SIDNEY AVE
Baltimore

D BRINKMEYER

1602 ANNAPOLIS DR
Glen Burnie

D D AIR CONDITIONING & HEATING

14 N CAREY ST # 104
Baltimore

D W Bahr Plumbing & Heating Inc

8232 Pulaski Hwy
Rosedale

D&A Service Company Heating & Cooling

4506 Emerson Street
Hyattsville

Dan Nichols Contractor

5777 White Rock Road
Sykesville

DAN RAINVILLE ASSOC

7715 OLD HARFORD RD
Parkville

DANFOSS AUTOMATIC CONTROLS

7941 CORPORATE DR
Nottingham

Dave's Mechanical Services, LLC

10115 Old Liberty Road
Frederick

Day Jobs, LLC

877A Annapolis Ave
Edgewater

DEER CREEK OUTDOOR FURNACES

3315 GRIER NURSERY RD
Street

DELTA MECHANICAL INC

7466 NEW RIDGE RD
Hanover

DELTA TEMP LLC

14775 ADDISON WY
Woodbine

DELUCA HEATING & AC

4504 N POINT BLVD
Sparrows Point

DELUCA HEATING & AIR

4202 RIVERSEDGE WY
Dundalk

Desai Holmes & Sheer MDs LLC

23 Crossroads Dr
Owings Mills

DEVITO MECHANICAL INC

115 E BAY VIEW DR
Annapolis

Diagnostic Heating & Air Conditioning LLC

20 Cinnamon Circle
Randallstown

Dimitri's Home Improvement Inc

929 Stormont Cir
Halethorpe

DLD Mechanical Services, LLC

11444 Glen Arm Rd
Glen Arm

DNS MECHANICAL SVC

3227 DUNDALK AVE
Dundalk

Donald S Watts Co

3150 Baltimore Blvd
Finksburg

DOUGLAS S JONES & SONS INC

1909 SHORE DR
Edgewater

Downtown Beer and Wine

5751 Fishers Ln
Rockville

DPS INC

9010 MAIER RD
Laurel

DR KOOL & CO

PO BOX 407
Owings Mills

Drain Surgeon Plumbing & Heating

5712 Kirby Road
Clinton

DRE Mechanical LLC

245 Eale Rd
Pasadena

Dry-Tek Environmental

818 Brown St
Salisbury

DUBLIN HEATING & AIR COND

1701 DARLINGTON RD
Darlington

Duct Masters Rx

423 Deacon Brook Cir
Reisterstown

DUCTZ of Central Mid-Atlantic Region

1900 Lansdowne Road
Baltimore

DUCTZ of Columbia

6148 Starburn Path
Columbia

DUCTZ of Southern Maryland

10302 Southern Maryland Blvd
Dunkirk

Dun-Rite Plumbing & Heating Llc

7004 Rock Creek Dr
Frederick

DUNDALK OIL CO

7734 WISE AVE
Dundalk

Dunne Wright Services Llc

1412 Crain Hwy N
Glen Burnie

Dusty's Painting Plus

3104 Sedgwick Lane
Bowie

E & M Plumbing Htg & Clg

907 Echo Bay Ct
Gambrills

E J HERRING & SONS

621 CENTRAL AVE E
Edgewater

E L Foust Company Inc

754 N Industrial Dr

E3 Technical Group

PO Box 8255
Parkville

EAGLE AIR CONDITIONING SVC

626 PRESTWICK TRL
Bel Air

Earth Friendly Services

3015 Sycamore Pl
Huntingtown

East Coast Custom Construction LLC

3383 yellow SPGS. S
Laurel

Easterday Well & Pump

9265 Brown Church Rd
Mount Airy

EASTERN ABSTRACTING-SETTLEMENT

3655 OLD COURT RD
Pikesville

EASTERN AIR CONDITIONING

10051 PULASKI HWY
Middle River

EBENEZER IM SVC INC

12054 SCAGGSVILLE RD
Fulton

Eberle Atomotive Sunoco

8272 Quarterfied Road
Severn

Eberle Atomotive Sunoco

8272 Quarterfied Road
Severn

ECO PURIFICATION SYSTEMS USA

1450 S ROLLING RD
Halethorpe

Eco-Cool HVAC

1200-C Agora Dr
Bel Air

Ecobeco

107 A West Edmonston Drive
Rockville

EcoMize USA

18 Dickens Sq
Lutherville Timonium

Edge Energy

6854 Distribution Dr
Beltsville

Efficient Home

3905 National Dr
Burtonsville

Elec Pros - Baltimore Electricians

242 South Washington Street
Baltimore

ELITE AIR CONDITIONING & HTG

2938 GOLDEN FLEECE DR
Pasadena

ELKRIDGE AIR CONDITIONING & HEATING

6334 MONTGOMERY RD
Elkridge

ELkridge Shell

6295 Washington Blvd,

Elmar Mechanical Services

57 W Timonium Rd
Lutherville

Elysian Energy LLC

1414 Fenwick Ln
Silver Spring

EMA Contracting, LLC

213 N. Union Ave.
Havre De Grace

Empire Builders Inc

1962 Sigfrid Ct
Annapolis

EMRICH MECHANICAL INC

13120 Clarksville Pike
Highland

ENCOMPASS

9195 RED BRANCH RD
Columbia

EnergE Squad

239 East Baltimore Street
Taneytown

ENERGY EFFICIENCY EXPERTS

1800 East West Highway
Silver Spring

Energy Savers

8911 Mistletoe Dr
Easton

Energy Savers America

310 Woodward Rd
Westminster

ENERGY SYSTEMS INC

PO BOX 450
Lothian

Energy Wizard

206 North Lake Ct
Stevensville

engineering consultant

619 Topland Dr.
Crownsville

Enrgize

PO Box 331
Owings Mills

Enrgize

Owings Mills

ENVIRO AIR LLC

3006 SOLOMONS ISLAND RD
Edgewater

Enviro-Tek Services

P.O. Box 159
Highland

ENVIRONMENTAL CONDITIONING

1610 LAUREL DR
Joppa

ENVIROTHERM SYSTEMS

2812 MUNSTER RD
Parkville

ETC HEATING & AIR

3520 leslie way
Laurel

EURO DESIGN REMODEL

5483 Harris Farm Ln
Clarksville

Evans Heating & Air Conditioning

212 Johnny Lane
Stevensville

EXCELSIOR BLOWER SYSTEMS

1900 Lansdowne Rd
Halethorpe

F LAMAR MERGLER INC

601 FRANKLIN ST
Havre De Grace

FALLSTON HEATING & AIR COND

1129 CLAYTON RD
Joppa

Fallston Remodeling & Carpentry INC.

1120 Sturbridge Road
Fallston

FARNEN & DERMER INC

9720 YORK RD
Cockeysville

FARNEN & DERMER INC

97 PIDCO RD
Ellicott City

FARNEN & DERMER PLUMBING & HEATING

10500 REISTERSTOWN RD
Owings Mills

FARRELL MECHANICAL

8103 BEACHWOOD RD
Dundalk

FIDELITY ENGINEERING CORP

25 LOVETON CIR
Sparks Glencoe

FILTER TECH

13715 KILLARNEY CT
Phoenix

Fireplaces & Stoves MD

Po Box 43891
Nottingham

First Class Mechanical LLC

835 Baltimore Blvd
Westminster

First Response Heating and Cooling

3739 Federal Hill rd
Jarrettsville

Fitz Mechanical Inc

6311 Harford Rd
Baltimore

Fixed! Hvac Service

PO Box 922
Gambrills

FLANAGAN ENTERPRISE

6077 HARFORD RD
Baltimore

Flanagan's Chimney Sweep

1650 Robin Cir
Forest Hill

FLO-PAC

10545 GUILFORD RD
Jessup

FLO-TRON

10604 BEAVER DAM RD
Cockeysville

For Friends Auto Body & Repair Inc.

1923 Old Eastern Avenue
Essex

FORAKIS REFRIGERATION & AIR

819 TOLNA ST
Baltimore

FOREMOST HEATING & AIR CONDITIONING

1200 HARKINS RD
Pylesville

FORSYTH CONSTRUCTION LLC

2900 Andrea Ave.
Parkville

Frank J Klein & Sons Inc

300 Reisterstown Rd
Pikesville
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