Heat Pax Air Activated Body Warmer

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Part# 13-14979
MFR Model# 5542


TechNiche's HEAT PAXTM Warmers deliver up to 20+ hours of air activated heat and relief from the cold. They are an effective defense against the cold. Heating can be suspended at any time by resealing the inserts in an airtight container or plastic bag.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • Work great inside our Vests, Neckwear, Blankets, Back Wraps, and Seat Cushions
  • Generate 20 hours plus of warmth
  • 3.5inches x 5inches (8.9 cm x 12.7 cm)



Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the shelf life of the heat pax air activated body warmers? I would like to include some in the survival kit I have onboard.

Per the manufacturer: The warmers all have a shelf life of at least 3 years. There is an "expiration date" on each warmer that is 3 years out. However, the warmers do not go bad, like a gallon of milk, once the expiration date is reached. 3 years is just the minimum time it usually takes for air to penetrate the outer film packaging and begin effecting the warmer. The longer after that date passes the shorter the heating duration will be. For instance if you have a warmer that is a year passed the expiration date it may last for 10 hours verses the 20. Two things to keep in mind though; The body warmers will produce heat for 20-24 hours. If a person uses the warmer for, say, 10 hours they can put the warmer in an air tight zip lock bag to cut off the air and stop the reaction...and the warmer will still have about another 14 hours of heating left, after it is opened again.