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Lennox 18L11 Natural Gas to LP Propane Conversion Kit

Part of: Lennox Natural Gas to LP Propane Conversion Kit

Other options in this family: Lennox 28G61 Lennox 21Z23 Lennox 18L12 Lennox 11K49 Lennox 25W20

Manufacturer

Picture for manufacturer Lennox

Part Number

18L11
7 reviews
Sale Price

$148.01

1 left at this price

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Product Details

The Lennox 18L11 is a comprehensive natural gas to liquid propane (LP) conversion kit designed for Lennox compact unit heaters. This kit enables the conversion of natural gas appliances to propane fuel, making it ideal for installations where natural gas is unavailable or for high-altitude applications.

Key Features:

  • Compatible with LF25/LS25-30, 45, 60, 75, 90, and 105 compact unit heaters
  • Orifice size: 0.0453 inches (1.15mm) for proper propane flow
  • High altitude rated: 0-5000 ft (US) / 0-7500 ft (Canada)
  • Designed for use with White Rodgers 36G series gas valves
  • Includes seven burner orifices sized for LP gas
  • Includes pressure switch (4.5" water column rating)
  • Complete with conversion stickers for proper identification

What's Included:

  • Conversion kit base components
  • Seven burner orifices
  • White Rodgers pressure measuring adapter kit (92-1003)
  • White Rodgers 36G series gas valve conversion kit (92-0659)
  • Pressure switch (GFS3466-1658)
  • Brass adapter, nipples, and elbow fittings
  • Pressure switch wire harness (106344-01)
  • Unit conversion stickers
  • Complete installation instructions (507932-01)

This kit replaces Lennox part numbers 45L85 and 20L05. The conversion process involves replacing critical components to ensure the correct air-fuel mixture for safe and efficient propane combustion.

I ordered filters that are too big. But that was my mistake .

Very fast shipping and the part intact thanks for your very good service

Easy ordering

So far so good... Let's see how fast it arrives...

Very good price

Great product and fast shipping

easy ordering and right product

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