I wish I had done my research I purchased this! I trusted the folks at Rich”s for the Home to guide me to a quality insert. I paid $3, 203 for this, plus another large figure for the installation. It died 5 years later. I called for service and that was unaffordable and they couldn”t come out for a month and a half. So I hired a “Jack of all trades” to handle it. That cost me $250 I had to drive to another city to buy two new blowers for $160+. I never would have bought this if I knew that it was built to only last 5 years.