Recent Review: Every aspect of this job met or exceeded my (high) expectations. Due to the size and complexity of the job, I spent a lot of time getting estimates and comparing vendors. Sean from AEC came out multiple times for site-visits, and answered all of my questions patiently and with real technical experience. He put everything in an extremely detailed quote, and then kept modifying it as we discussed a myriad of options and approaches. I had a number of very specific, and probably unique and nutty requests (like emergency generator hook-ups, preferences on attic duct routing, vent placements, efficiency, etc) that Sean was able to research and provide solutions for. He talked me out of a few of my stupid ideas too. Cost-wise, AEC was pretty consistent with the other 4 vendors I talked with, but I appreciated their willingness to talk through and then write down my options and cost/value trade-offs - so I awarded them the job. I felt like I knew exactly what I was getting into - both the pros and cons of every part of the design. The install crews showed up as scheduled each day. They were consistently neat, and cleaned up after themselves (tools, trash, and all) every day. Even the attic was cleaned up at the end of each day. There was a sr tech on site each day and they were all clearly very experienced. The ductwork guy, mechanical/plumbing guy, and electrician were incredibly focused on little details that ended up making a huge difference in the operation of the system. When surprised by unexpected 'existing conditions' they were agile enough to come up with quick and solid solutions without adding cost. Sean Jr and Sean Sr (owner) came out personally to deal with the harder issues, do final check-outs, and make sure I understood how the whole thing worked. I did have some repeated early system failures and a few bizarre side-effects from the zoning - including some crazy-loud air noise in a few rooms and a loud and irritating buzzing sound in the walls... but AEC came out repeatedly until they found and fixed all of the problems. Even the fixes were well thought out and carefully installed. The system has been running well for over a month now and seems very stable. Every part of the design (including the side-effects of some of the cost compromises) has played out as I was advised, which is pretty impressive really. As best I can tell during this not-too-cold winter the system is sized properly. In the end, the install was exactly as detailed in the quote. Everyone was professional and had both an engineering and an aesthetics mindset. I highly recommend these guys.