Capacitor On Furnace Motor

How replace a furnace capacitor.

Capacitor on furnace motor.

How to check a 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. Its capacitor works like a battery and stores the energy needed by the blower to work properly.

When you need motor start and run capacitors shop at grainger. But most furnaces by far have a single capacitor. Turn off all power to the furnace. Smith century dl1056 1 2 hp 1075 rpm 3 speed 115 volts6 5 amps 48 frame sleeve bearing direct drive blower motor.

Round molded cases can protect start capacitors from oil dirt moisture and grease helping prolong maintenance free performance and reduce replacement costs. If the furnace is receiving power turn up the thermostat and see whether the blower motor starts within the next few minutes. A bad capacitor can cause damage over time to a furnace s blower motor. Letting it run longer could make the problem worse and do more damage to the furnace resulting in a much higher repair bill.

Example furnace blower motor on amazon a o. Find dry electrolytic nonpolarized start capacitor models in a wide range of sizes and mfd ratings. Like a battery the capacitor stores. Remove any bolt holding the old capacitor in place.

Take pictures of the wiring to reference back if needed. 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. What is a capacitor. The wiring should be checked for the proper electrical currant reaching all components before suspecting a faulty run capacitor.

Only let it run just long enough to hear the hum. Your furnace uses a lot of energy so to supply the extra energy needed to power the blower gas furnaces have a capacitor. But with a bad capacitor your blower cannot function well and may put your family s comfort at risk. Locate the capacitor usual close to the furnace motor.

If it doesn t start turn the thermostat back down or cut the power to your furnace. Gas entering your furnace is ignited by the pilot light and burners heat the air. Before checking the capacitor make sure the fuse controlling the furnace is flipped to the on position. When the run capacitor on a permanent split capacitor motor for a furnace is not working the blower fan will not operate.

Furnace capacitor some furnaces don t use a capacitor while others will have both a start and run capacitor.