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Run capacitor-7.5/370
Fedders is a legacy brand in window air conditioners and dehumidifiers — once common in homes and now found in many older installations still in active service. While the company no longer manufactures new units, the installed base remains significant, and replacement parts for Fedders cooling and humidity control equipment are in steady demand.
Whether your Fedders window AC unit has lost cooling capacity or your dehumidifier isn't pulling moisture, the culprit is usually one of a handful of high-failure parts. Run capacitors, fan motors, and compressor start relays top the list — all are far less expensive to replace than a new unit.
Find your Fedders model number on the unit's nameplate (usually rear or side panel) and use Fedders Parts to locate your exact replacement. Repair Clinic carries genuine OEM Fedders parts for discontinued models.
The most common cause is a failed run capacitor. The capacitor stores electrical energy to start and run the compressor and fan motors. When it fails, you'll hear the unit click on but produce no cold air — the motor won't get the kick-start it needs. A run capacitor is a $10 to $30 part and one of the easiest air conditioner repairs. If the capacitor tests good, check the compressor start relay next — it's a $15 to $40 part that tells the compressor when to engage. Both parts should be checked before assuming the compressor itself has failed (a much costlier repair).
Your Fedders model number is printed on a label attached to the unit — usually on the rear panel or inside the side panel. It will look like "FEH-xxxx" or similar. Enter this exact model number into Repair Clinic's search to find all compatible parts for your specific unit. The model number ensures you get the correct capacitor voltage and µF rating, the right motor assembly, and the proper control board if needed. Fedders made many variations over the years, so the model number is required for correct fit.
Yes — run capacitor replacement is one of the safest air conditioner repairs you can do, as long as you discharge the capacitor before touching it. Turn off the unit and unplug it. Use an insulated screwdriver to short the capacitor terminals together, releasing any stored charge. Remove the old capacitor, note the terminal positions, and install the new one matching the µF and voltage ratings exactly. If you're uncomfortable working with electricity, a technician can do it in 15 minutes for a service call fee. Either way, a new capacitor is far cheaper than replacing the entire unit.
Fedders dehumidifiers fail most commonly in the compressor circuit — the run capacitor and compressor start relay are top failures. You'll notice the dehumidifier running but not pulling moisture from the air, or not turning on at all. The control board and humidity sensor (thermistor) are second-tier failures. If your Fedders dehumidifier has lost cooling capacity but the motor is running, the sealed compressor system itself may have failed — a major repair on older units, but Repair Clinic carries replacement sealed system parts and start relays to get you running again. Always verify your exact model number before ordering.


Ordering Fedders brand-level parts online is simple and helps you find genuine OEM parts for your unit. With same-day shipping on most in-stock items, you'll have your replacement part fast, minimizing downtime. Our model/part number lookup finds the exact OEM part for your unit, and every order is backed by our 365-day return policy and price-match guarantee. Browse our repair help section for troubleshooting tips, part testing guides, and step-by-step installation videos for your specific product.
On most Fedders air conditioners and dehumidifiers, the model number appears on the unit's nameplate, usually on the rear panel or inside the side panel. Look for a label that also lists the serial number, electrical ratings, and other identification details. Copy the model number exactly, including letters, numbers, and hyphens. Type it into our model number lookup and the catalog narrows to parts made for your unit, across every available part category. Fedders produced many variations over the years, so matching the complete model number helps separate similar-looking parts and older model versions. You get parts that fit the first time.

Whether you own a Fedders or work on one professionally, Repair Clinic's online repair help covers what you need. Start with a symptom guide to narrow the likely cause, then use the model number lookup to confirm the correct replacement part. Written repair instructions and matching videos walk you through each step of the installation for a clean, first-time repair.

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