The exhaust piping for my furnace was 'red tagged' (by a different company) who gave me only 14 days to get it fixed. Since the furnace was 19 years old I decided to replace the furnace. I obtained quotes from a number furnace suppliers and was referred to Aardvark who I eventually selected to replace the furnace. This was based on a number of factors, most importantly Aardvark offered an Amana furnace with a lifetime warranty to replace the entire furnace if the heat exchanger fails (I am big on warranties), but also price, reputation, and Ryan's flexibility to work with the tight time constraints I was under. His quote was clear, understandable but provided the detail I required. When he came to do the work Ryan was very professional, thorough, and personable. There were some complications due to features of the house but Ryan was able to resolve them all. I am by nature very curious and had numerous questions for him while he was working. He was happy to respond to them and explained important aspects of the furnace, thermostat, humidifier, and pump. Since then the furnace has been working excellently. I was very impressed. The one complication I had was in obtaining a complete, finalized invoice for the work done. This is apparently due to problems in Aardvarks Quickbooks sy1tem. It was frustrating for me but I was impressed that Ryan continued to work on it until he found a satisfactory solution.