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Modine® Propane to Natural Gas Conversion Kit for Hot Dawg® Spark Ignition Heaters (HD30 - HD75)

, 53214
QC Supply Part #: 20891
Shipping: Standard
Availability: In stock

Convert your Hot Dawg Propane Heater to natural gas with this kit.


Easily convert your Modine® Hot Dawg® Heater (model HD only) from Propane to Natural Gas with this Conversion Kit. Works for Spark Ignition models only.

Kit Includes:

  • [1] Instruction Manual
  • [5] #49 Natural Gas Orifices
  • [1] Conversion Rating Plate
  • [1] Gas Conversion Kit; Which Itself Includes:
  • [1] Spring
  • [1] Cap Screw
  • [1] Adjustment Screw
  • [2] Conversion Stickers

Works With the Following Models:

  • HD30AS0121
  • HD45AS0121
  • HD60AS0121
  • HD75AS0121

This Conversion Kit will only work with the Spark Ignition Hot Dawg® Heater models. These models have an "AS" in the model number. If you have a Hot Surface Ignition model (these models are denoted with an "AH" in the model number), a different kit is required (see QC #20899 or #20900). If you have questions, please feel free to call us at 800.433.6340 with your complete model # and serial # to determine the proper Conversion Kit for your Hot Dawg® Heater.

Brand Modine
Manufacturer Part Number 53214



Manuals & Resources


Customer Reviews

  • 5 Stars

    Worked Perfect

    Review by on Feb 3, 2017

    Just the part I needed and delivered fast.

  • 5 Stars

    Works as it should

    Review by on Mar 2, 2016

    Works as it should

  • 5 Stars

    Just what the Dr Ordered

    Review by on Nov 8, 2015

    Worked perfectly.

  • 5 Stars

    No Problems

    Review by on Dec 10, 2014

    Searched for this conversion kit on the internet. Other sites directed me to the wrong product... Not QC Supply. This web site had not only the right product but was able to download a PDF with description and manufacturer instructions. they added a free gift to boot!!!
    Thank You!

  • 5 Stars

    Worked Perfect!

    Review by on Nov 13, 2014

    I installed this myself following the supplied instructions. I installed it in a used HD45 in my garage and fired it up. It works great.

  • 5 Stars


    Review by on Nov 10, 2014

    Perfect fit. Worked great

  • 5 Stars


    Review by on Nov 6, 2014

    Just had installedd and works great. Great service from QC Supply, no one my area had this kit.

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