A dual-run or single-run capacitor stores an electrical change, then releases it to start the furnace blower motor. If the capacitor is faulty, the blower motor may be slow to start or may not start at all. You can often tell that a capacitor has failed because it will bulge or leak. If there is no visible damage, you can test the capacitor using an analog-style Ohm meter or a capacitor tester to determine if it is working properly. Repair Clinic carries genuine manufacturer capacitors from top names like Goodman, Carrier, Nordyne, York, and Lennox, and we can ship this part to you quickly. Enter the full model number of your furnace in our website’s search bar, then select "Capacitor” from the part category filter to identify the specific capacitor that fits your furnace. If you’re unsure about which capacitor is the right one for your model, don’t hesitate to contact our Customer Service Team for help at 1-800-269-2609.
To prevent shock, you should always attempt to discharge the old capacitor before removing. You can do this by placing a screwdriver blade across each set of capacitor terminals (avoid touching the blade when doing this). Review the appropriate instructional videos, articles, and model-specific schematics in our repair help library for more information and how to correctly test and replace furnace capacitors.