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Quick specs
Part Type
Natural gas to LP conversion kit
Fits
Goodman GR9S80 / GD9S80 furnaces
NOx Compatibility
Regular & low NOx (not ultra-low NOx)
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
SKU: LPM-31 · Category: CONVERSION KITS

GOODMAN LP Propane Conversion Kit LPM-31

Factory-Authorized LP Kit·For 80% AFUE Single-Stage

$193.59

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  • Free shipping — most items ship by the next day

Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.

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SKU: LPM-31 · Category: CONVERSION KITS
GOODMAN LP Propane Conversion Kit LPM-31
Quick specs
Part Type
Natural gas to LP conversion kit
Fits
Goodman GR9S80 / GD9S80 furnaces
NOx Compatibility
Regular & low NOx (not ultra-low NOx)
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.

GOODMAN LP Propane Conversion Kit LPM-31

Convert your natural gas furnace to efficient propane (LP) operation with the Goodman LPM-31 factory-authorized LP Conversion Kit. Designed specifically for single-stage 80% AFUE Goodman and Amana gas furnaces (including GR9S80, GD9S80, and compatible models), this kit enables safe and reliable performance when switching fuel sources.

Key Features

  • Complete Conversion Kit: Includes all necessary components such as orifice spuds, regulator spring, adjustment screw, and the critical LPLP low pressure switch for proper LP operation.
  • Compatibility: Works with select single-stage 80% AFUE Goodman and Amana furnaces (e.g., GR9S80, GD9S80, DR80SN, DD80SN series, 40,000–120,000 BTU/hr models).
  • OEM Quality: Genuine Goodman/Daikin part engineered for White-Rodgers 36G22 and 36J22 series gas valves.
  • Easy Installation: Comes with detailed instructions for qualified HVAC technicians.
  • Safety-Focused Design: Includes low pressure switch to ensure reliable propane performance and system safety.

Benefits

  • Fuel Flexibility: Easily switch from natural gas to propane, ideal for homes in areas where propane is more available or cost-effective.
  • Reliable Performance: Maintains optimal furnace efficiency and heating output on LP gas without compromising safety or comfort.
  • Cost-Effective Solution: Avoid expensive furnace replacement — simply convert your existing compatible unit.
  • Peace of Mind: Factory-authorized kit with proper pressure regulation and safety features reduces risk of improper combustion or system issues.
  • Professional-Grade Durability: Built to Goodman’s high standards for long-lasting reliability in residential heating applications.

Important Note: Installation must be performed by a qualified HVAC technician in accordance with local codes and manufacturer instructions. Improper installation can result in fire, explosion, or carbon monoxide hazards.

Whether you’re a homeowner upgrading your heating system or an HVAC professional servicing Goodman furnaces, the LPM-31 provides a straightforward, reliable way to adapt to propane fuel.

Key features
  • Factory-Authorized LP Kit — converts natural gas furnaces to propane
  • For 80% AFUE Single-Stage — Goodman and Amana GR9S80, GD9S80 and compatible models
  • Safe, Reliable Operation — when switching fuel sources
  • Complete Kit — everything needed for conversion

Why homeowners choose NAW

Genuine OEM parts

Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.

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Ordered the wrong part? Send it back within 30 days.

Help when you need it

Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.
Specifications
Furnace Efficiency 80% AFUE
Stages Single-stage
Furnace Input Range 40,000-120,000 BTU/hr models
Gas Valve White-Rodgers 36G22 and 36J22 series
Kit Contents Orifice spuds, regulator spring, adjustment screw, LP low pressure switch

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