Other VS 90 Reviews
The forum diychatroom.com features several posts from Comfortmaker furnace owners. One homeowner states that his furnace will not stay on, even after he replaced the pressure switch that seemed to cause the problem. The experts answers that the problem may be the heat exchanger; they advise having it checked immediately by an HVAC technician. Another post in this chain revolves around drainage problems. The advice from the pros includes cleaning the drainage pipe and making sure the hose is connected inside the unit.
A homeowner writes to hvac-talk.com and asks for a comparison of Comfortmaker, Carrier and Tempstar furnaces. An expert responds that a variable speed model such as the Comfortmaker VS 90 is a better option, and that proper installation is more important than brand name. ICP manufactures both Comfortmaker and Tempstar, and is a part of Carrier Corp.
A Comfortmaker furnace won't start, leading to a question on justanswer.com. The expert suggests several actions, including checking the thermostat's operation. Ultimately the owner is able to fix the problem by checking a fuse on the unit's circuit board.
The VS 90 is available in different models which vary in efficiency and capacity.
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Comfortmaker offers a lifetime warranty on the heat exchanger of the VS 90, and a no-hassle replacement warranty for the furnace for 10 years should the heat exchanger fail within that time. The parts are covered by a 10-year guarantee as well. However, homeowners must register their unit online within 90 days of installation to qualify for these warranties.