Great price! Great installation--- However...*****Very Poor customer service! When you need to reach them and need assistance they do not get back to you. If there is a real emergency and you need them, you will not be able to get in touch. All communication is cut off. They do not return calls and all mailboxes are full so you can't leave messages.

I had four estimates and I went with Mainstream because they had the most product knowledge out of them all. I have had my system for 6yrs. now and it runs like the first day it was installed.