I spoke with Mike Daine from Prescription Heating by phone today to obtain an estimate on a replacement boiler for our home. Within the first minute of our conversation, he asked what city we live in. For installing new boilers (not for repairs), he needs to be licensed in the city in which we live. He promptly found out that we live in St Paul; a city that he is not licensed to install new boilers in. Instead of ending the call after he found out that he could not sell us a boiler, he continued to speak with me for about 15 to 20 additional minutes. He told when what brand of boilers were good brands to buy and why, he told me when was the best time of year to replace a boiler (We don't need to replace ours immediately... so we're flexible), clarified why we're replacing the boiler and if it is necessary to do so, etc. It was very encouraging to me that Mike would be willing to share his knowledge and experience with me even though he wouldn't be able to sell a new boiler to me. I am writing this review so that other potential customers might consider using him (so that a small, very customer friendly business can continue to exist). There's a reason why this business is rated so highly.