C.W.
We used Meadowbrook Air Conditioning and Heating. His name is Craig McConnell and his number is ###-###-####. They were very reasonable. We have an older home and we got new air conditioning about a year ago and they had to put the ducts in, which was a lot of work. It was expensive, however it wasn't as expensive as most places had quoted us. We had gotten several quotes from bigger companies, however a few were smaller places too. They did great work, we haven't had any problems with it. The big companies want a lot of money, cause they have a lot of overhead, expenses.
We called him several times after we got our system in and he always called us back and answered all our questions.
The only downside is that he doesn't offer financing (or at least he didn't offer it when we bought our system). He may offer it now. If you need that, you may want to get a loan from a bank or a home equity loan or find another place that can finance it for you.
He was recommended to us by my husband's boss at work. That's the main reason we decided to go with him, along with the price he gave us.
We have a Trane and have the special air filter and have been happy with it.
Good Luck, C.