I have been using the services from Airsmiths Home Performance for a couple years now and have been very pleased with how the work from them has been. We have a non standard system that was installed by Airsmiths a few years back, I have used a couple other HVAC specialists and they have been unsure how it works or what to do with it, but Airsmiths knew exactly what to do with it. They were very knowledgeable about the system that had been installed. Overall I think Airsmiths Home Performance did a fine job with the work I needed, I would definitely use their services again, and I highly recommend them.