How Do You Insulate Heat Pump Pipes Which Run Outside The House?


Insulating your pipes ensures that no heat is lost in transfer. It reduces the amount of money you spend on heating each year to a fraction of the price that you otherwise might have spent on bills. Insulating cold water pipes prevents them from freezing and eventually bursting, saving even more in potential repair bills.

Things You'll Need

  • Foil or fiberglass insulation
  • Duct tape
  • Plastic wrap
  • Tubular sleeve insulation
  • Rag
  • Clean the outside of the pipes with a damp rag and a mild cleaning solution to prepare it for insulation. Allow them to dry.

  • Wrap the pipe completely using either fiberglass or foil insulation. Secure the material in place with duct tape so that the insulation holds tightly against the pipe. Every few feet should suffice; use your discretion. For fiberglass insulation, wrap the pipes with plastic after applying the fiberglass to prevent condensation issues with cold pipes.

  • Cut the tubular insulation sleeve to fit the pipe (if you are using it). Slice the sleeve down one side and slip it over the wrapped pipe. If needed, secure it in place with tape.

Tips & Warnings

  • Tubular insulation is recommended, as not only does it look neater, it insulates even better than if not used.

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  • Photo Credit pipes image by Rainer Tagwercher from
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