Capacitor On Furnace Motor

Before checking the capacitor make sure the fuse controlling the furnace is flipped to the on position.

Capacitor on furnace motor.

Gas entering your furnace is ignited by the pilot light and burners heat the air. Your furnace uses a lot of energy so to supply the extra energy needed to power the blower gas furnaces have a capacitor. If it doesn t start turn the thermostat back down or cut the power to your furnace. Locate the capacitor usual close to the furnace motor.

A bad capacitor can cause damage over time to a furnace s blower motor. Like a battery the capacitor stores. The blower motor in your furnace blows hot air through the ducts and into your home. But with a bad capacitor your blower cannot function well and may put your family s comfort at risk.

Only let it run just long enough to hear the hum. Furnace capacitor some furnaces don t use a capacitor while others will have both a start and run capacitor. The furnace will heat up but the blower does not come on. The blower then moves the warmed air into and through the ductwork in your house.

Take pictures of the wiring to reference back if needed. If the furnace is receiving power turn up the thermostat and see whether the blower motor starts within the next few minutes. Find dry electrolytic nonpolarized start capacitor models in a wide range of sizes and mfd ratings. 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. Round molded cases can protect start capacitors from oil dirt moisture and grease helping prolong maintenance free performance and reduce replacement costs. 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. The wiring should be checked for the proper electrical currant reaching all components before suspecting a faulty run capacitor.

When you need motor start and run capacitors shop at grainger. A faulty capacitor may prevent the blower from functioning at all. What is a capacitor. Any capacitor with the same voltage and micro farads can be used interchangeably.

But most furnaces by far have a single capacitor. Example furnace blower motor on amazon a o. How replace a furnace capacitor. 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.