The HVAC company may also charge a flat service call fee no matter how quick the job is to complete. You may pay more if the technician has difficulty accessing the part. HVAC contractors may charge anywhere from $90–$200 depending on the type of system and how accessible the capacitor is. Variation in AC capacitor replacement costs can be mostly attributed to labor. HVAC Unit TypeĪ capacitor for a window unit or a mini split system may be less expensive than one for a central air conditioner. Price doesn’t scale directly with size, but if you have a very large, powerful HVAC system, a capacitor with a high enough voltage rating will probably cost more. Air conditioner capacitor size is measured in microfarads as well as volts, and an underpowered capacitor will fail to start the cooling cycle. Larger HVAC units will require more powerful capacitors. Fortunately, the part is inexpensive at $9–$12.Īside from the type, here are some things that influence AC capacitor prices. Your home’s HVAC system may use the same blower motor for both heat and cooling, meaning that this capacitor has to work year-round. Furnace blower motors also need this part in order to circulate heat throughout a home’s air ducts. It’s not just air conditioners that have capacitors. A heat pump capacitor usually serves the same functions as a dual run capacitor and thus costs about $15–$25. Heat pump systems can also be used to bring cool air into a house, and in some ways operate very similarly to traditional air conditioners.
Unfortunately, if one part of this capacitor fails, you must replace the whole thing. These devices are larger and cost a bit more-usually $15–$45-but they can supply power to much larger HVAC systems. Instead of having separate start and run capacitors, some systems have a single capacitor that takes care of both. The run capacitor keeps the AC compressor, the condenser fan motor, and the blower motor operational whenever the air conditioner is on. Once the start capacitor has started the cooling cycle, the run capacitor sustains it. Similar to a car starter, this device provides a burst of energy to begin a cooling cycle (one that might be too much for a home’s electrical system to handle on its own) and then turns off once the unit is running. As the name implies, an air conditioning unit needs a start capacitor to start up.
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