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Lennox 10W99 Piston Kit 0.065

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Special Price $14.22 Regular Price $18.49
Out of stock
SKU
10W99
The Lennox 10W99 Piston Kit of 0.065”, is an essential component utilized in HVAC systems to control the refrigerant charge. This kit also comes with a piston orifice assembly that determines the amount of coolant that gets to the evaporator coil of the system. Measuring 0.065 inches in size, this kit facilitates accurate control of the refrigerant circulation. In the heat pump and air conditioning systems, this piston kit is used to meter the refrigerant correctly to improve the heating /cooling capacity and energy efficiency. Proper refrigerant flow minimizes system failure and energy wastage of the unit runs efficiently.
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Specifications

  • Weight: 0.01lbs
  • Size: 0.065 Inch
  • Measure: Unit
  • Type: Piston Orifice Assembly Kit
Manufacturer Name: Lennox
Product Number: 10W99
OEM Part Number: 10W99
Product Description: (.065) Piston Kit
Weight:0.01lbs/4.54g

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Product Questions (2)
Customer Questions
What maintenance is required for the Lennox 10W99 Piston Kit?

Inspect and clean the piston and metering orifice regularly to prevent debris buildup. Ensure correct refrigerant flow and proper seating during installation. Keep system free from moisture and contaminants to maintain stable performance and efficiency.

What are common issues with the Lennox 10W99 Piston Kit?

  • Clogged piston orifice causing restricted refrigerant flow.
  • Incorrect piston size leading to poor cooling performance.
  • Refrigerant pressure imbalance or fluctuating system pressures.
  • Inconsistent evaporator operation.
  • Reduced system efficiency due to metering inconsistencies.

Installation Steps

Step 1: Turn off power and recover refrigerant before opening the refrigeration circuit to avoid damage.

Step 2: Access the indoor coil or metering component and remove the line set connection carefully.

Step 3: Extract the existing piston from the distributor body using proper HVAC extraction tools.

Step 4: Install the new piston kit in the correct flow direction inside the distributor housing.

Step 5: Reassemble all fittings tightly and ensure the orifice is seated properly without debris.

Step 6: Evacuate and recharge the system, then test superheat and cooling performance for correct operation.