When I bought my home the previous owners had used this company to install the humidifier, that was 3 years ago. I phoned them up because I had static and didn't know why, they told me where to find the control to solve my problem! I have used them for everything possible ever since, I have bought my water softner, my furnace, had my gas stove hooked up. I trust what they have to say, they don't talk circles around you and use common language!