Energy Efficient Furnace Fan Motor

Output of the motor can be adjusted by signals from a controller or permanently programmed to advance through a range of speeds during each on cycle of the furnace.

Energy efficient furnace fan motor.

Variable speeds unlike an on off psc motor a furnace ecm motor can operate at a range of outputs between zero and 100 percent. High is sometimes used when the fan switch on a thermostat is on as well as when central air conditioning ac is running. If you have a builder s grade or older system then it may cost you as much as 10 12 a month. Typical psc motor operation.

These motors are intended to be installed by a qualified hvac technician. If you have a newer energy star rated furnace it will have a variable speed motor that is designed to run all the time. Here are some of the advantages to upgrading to a furnace ecm motor instead of sticking with the original equipment psc model. Exact energy amounts vary based on the size of the fan s motor but most whole house fans use between 120 and 600 watts according to the national renewable energy laboratory but this is still much less energy than a central air conditioner uses.

High efficient furnace blower motors utilizing ecm technology ecm electronic commutated motor is a brushless dc motor with a permanent magnet rotor and a built in inverter. They are also more expensive. After july 3 2019 residential furnace manufacturers must include energy efficient electronically commutated low wattage motors ecm s on their furnace fans instead of the permanent split capacitor psc induction blower motors normally used. Dc motors are more efficient than ac motors.