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Lennox 46K91 Heat Exchanger

Rating:
5 5 2
2  Reviews Add Your Review
Special Price $562.27 Regular Price $624.11
In stock
SKU
46K91
The Lennox 46K91 Heat exchanger is a major component in HVAC systems to change the temperature. It is an energy-transferring method of transferring thermal energy between the refrigerant and air streams. Hot refrigerant gas travels through the exchanger during heating and warms the air that circulates throughout your home. With cooling mode, warm indoor air passes on to the heat exchanger where the heat is transmitted to the cooler refrigerant which is carried outside. This efficient heat exchange means your Lennox HVAC system delivers consistent comfort by heating or cooling your living space efficiently.
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HVAC Furnace Parts, Heat Exchanger
Manufacturer:
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Specifications

  • Measure: Units
  • Weight: 21lbs
Manufacturer Name: Lennox
Product Number: 46K91
OEM Part Number: 46K91
Product Description: Heat Exchanger
Weight:21lbs/9525.43g

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Product Questions (2)
Customer Questions
What maintenance is required for the Lennox 46K91 Heat Exchanger?

Inspect the heat exchanger regularly for cracks, corrosion, or soot buildup. Clean any debris to maintain proper airflow and heating efficiency. Ensure connections and seals are secure to prevent leaks. Follow safety guidelines when handling hot or sharp components.

What are common issues with the Lennox 46K91 Heat Exchanger?

  • Cracks or fractures causing heat loss.
  • Rust or corrosion buildup.
  • Uneven or insufficient heat output.
  • Leaks around seals or connections.

Installation Steps

Step 1: Turn off power and gas supply to the system to prevent fire, gas leak, or shock hazards.

Step 2: Remove the panels and disconnect burners and attached components.

Step 3: Carefully unfasten and remove the damaged heat exchanger from the cabinet.

Step 4: Install the new heat exchanger, ensuring proper seating and alignment with burner assembly.

Step 5: Reassemble all components, restore gas and power, and test for safe operation and proper venting.