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What is a variable-speed furnace?

April 26, 2017furnace variable-speed

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What is a variable-speed furnace?

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A variable speed furnace is a furnace that has an ECM (electronically commutated motor) blower motor. This type of motor allows for infinite motor speeds. The motor will adjusts its own speed in order to maintain a predetermined set speed (which is done by the technician during the installation set up procedures). The benefits of this type of motor over a fixed speed a/c motor are, operating cost (approx. 1/5th that of an a/c motor) and continuous and constant air volume. Continuous air volume allows the home to be more comfortable at all times.