I used Prescription for the first time about 5 years ago for a 2nd opinion when a competitor told me I needed to replace my furnace and air conditioner. They had a differing opinion and have proven to be correct over the past several year, at a mere fraction of what I would have paid.
I have had them perform maintenance, repairs and add new services and have never been disappointed with any service visit. Their advice has always been accurate, their service is fast and most of all, they have never attempted to sell me something I didn't need, so I trust them completely.
I highly endorse Prescription to anyone with heating or cooling needs.