I ordered a erv system from them. Went with them because they could do it the fastest. Now I know why. Their techs are incompetent. To the point it’s a joke. I was sold a top of the line erv vanee gold series and they had no idea how to balance it, install it correctly or even what thermostat/controller worked with it. I was promised one thing by the sales guy, but when the techs came to install it, it was a totally different story. I asked the techs are you going to balance or check any air pressure before you leave, it was just off their radar of things to do...didn’t even click with them. I had about seven.....yes seven different techs come out, some where honest and just said they don’t know how to do this, and others just made up bs saying they fixed it when they didn’t do anything. Last tech even broke a seal because he had no idea what he was doing. Be warned, these guys are not authorized dealers (check to see they are if you buy from them) and the maintenance these guys do is a total sham. I have never seen such an unprofessional company before and it’s shocking. To this day they won’t even let me talk to the owner and I am thinking of taking them to small claims court. Beware. If you’re a home owner and don’t know anything about hvac systems do a little research, don’t trust these guys and take them for their word, you’ll see how dishonest they can get. Check up on their work. Check the filters they are replacing if they are new (they seemed way to anxious to take my old filters that were not dirty, seems they might be vacuuming them later and reusing in other homes). Check duct work for leaks if they replaced any metal work. Almost everything they did on my job they could have done better. They even installed the thermostat controller with one screw, and left the bottom screw hole empty and didn’t even care, told me to go to Home Depot and get a screw for it....this is Boonstra, an unprofessional company I regret doing business with.