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Lennox 22W78 Oval Run Capacitor 5 MFD 370V

Special Price $17.70 Regular Price $23.01
In stock
SKU
22W78
The Lennox 22W78 5MFD Capacitor 370V Oval is an essential component that enhances several attributes and reliability of HVAC systems. This is a type of capacitor which plays a crucial role of an electrical energy storage component that offers the power starting the compressor and the fan motors of air conditioning systems’ and heat pumps. The Capacitor, developed to be compatible with several HVAC equipment, ensures constant motor operation by rectifying voltage variations and providing the right electrical charge for starting up the equipment. In correct electrical flow it eases pressure on the system components hence prolonging their durability and minimizing instances of early failure.
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Specifications

  • Weight:0.17lbs
  • Measure:Unit
  • Length:3.5 Inch
  • Width:2 Inch
  • Height: 1.25 Inch
  • Type:Run Capacitor
  • Microfarad:5 MFD
  • Volatge:370V
  • Shape: Oval
Manufacturer Name: Lennox
Product Number: 22W78
OEM Part Number: 22W78
Product Description: 5Mfd Capacitor 370V, Oval
Weight:0.17lbs/77.11g

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Customer Questions
What maintenance is required for the Lennox 22W78 Capacitor?

Inspect the capacitor regularly for bulging, leaks, or corrosion on terminals. Ensure electrical connections remain tight and clean to prevent resistance buildup. Keep the unit free from dust and heat exposure. Always discharge it safely before servicing.

What are common issues with the Lennox 22W78 Capacitor?

  • Capacitance drift causing reduced motor efficiency.
  • Bulging or swelling due to overheating and heat pressure.
  • Open or short circuit failure.
  • Motor start or run failure.

Installation Steps

Step 1: Turn off HVAC power at breaker and confirm no voltage is present.

Step 2: Remove access panel and label or note each wire connection on the capacitor.

Step 3: Safely discharge the old capacitor using a resistor or proper tool to avoid shock.

Step 4: Disconnect wires from the old capacitor terminals.

Step 5: Install the new capacitor, matching terminals exactly as labeled.

Step 6: Secure panel, restore power, and test HVAC system operation.