Capacitor On Furnace Motor

How replace a furnace capacitor.

Capacitor on furnace motor.

Furnace capacitor some furnaces don t use a capacitor while others will have both a start and run capacitor. If it doesn t start turn the thermostat back down or cut the power to your furnace. The furnace will heat up but the blower does not come on. What is a capacitor.

Only let it run just long enough to hear the hum. The blower then moves the warmed air into and through the ductwork in your house. When you need motor start and run capacitors shop at grainger. Locate the capacitor usual close to the furnace motor.

How to check a run capacitor. When the run capacitor on a permanent split capacitor motor for a furnace is not working the blower fan will not operate. Round molded cases can protect start capacitors from oil dirt moisture and grease helping prolong maintenance free performance and reduce replacement costs. Example furnace blower motor on amazon a o.

Take pictures of the wiring to reference back if needed. Your furnace uses a lot of energy so to supply the extra energy needed to power the blower gas furnaces have a capacitor. If the furnace is receiving power turn up the thermostat and see whether the blower motor starts within the next few minutes. Hqrp 15uf 370 440v capacitor works with ac electric motor run start hvac blower compressor furnace 15mfd 27l567 97f9004 z97f9004 97f9004bz3 cbb65 ul listed 4 4 out of 5 stars 182 11 95 11.

But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. Smith century dl1056 1 2 hp 1075 rpm 3 speed 115 volts6 5 amps 48 frame sleeve bearing direct drive blower motor. Before checking the capacitor make sure the fuse controlling the furnace is flipped to the on position. Its capacitor works like a battery and stores the energy needed by the blower to work properly.

Remove any bolt holding the old capacitor in place. Gas entering your furnace is ignited by the pilot light and burners heat the air. Turn off all power to the furnace. Letting it run longer could make the problem worse and do more damage to the furnace resulting in a much higher repair bill.

Like a battery the capacitor stores. A bad capacitor can cause damage over time to a furnace s blower motor. A faulty capacitor may prevent the blower from functioning at all. But most furnaces by far have a single capacitor.

Any capacitor with the same voltage and micro farads can be used interchangeably.