How to Install a Wood Heater in a Shed


Having a wood-burning heater in your shed can be a nice touch in a location that's usually cold and unwelcoming. That being said, a wood heater can be very dangerous without proper ventilation. Technically, this is the type of job that should be done by a professional, but you can install the wood heater yourself. After this project is completed, you may want to contact a professional so they can inspect your work and make sure it was installed safely.

Things You'll Need

  • 12-Foot Class A Pipe
  • Two Pieces of 2-by-4 Wood
  • Nail Gun
  • Torpedo Level
  • Cordless Drill
  • Metal Flashing
  • Skill Saw
  • Putty knife
  • P Connector Pipe
  • Silicone Seal
  • Determine the desired location for your heater, making sure that it's centered between two rafters. Planning the project is probably the most important step.

  • Attach two 2-by-4s between the rafters on the ceiling as close to directly over the heater as possible. Attach the support box to the 2-by-4s. Screw it in place, making sure that it's level, and leave at least two inches of the box hanging below the rafters.

  • Drill a hole all the way through the center of the support box.

  • Using a plumb line, drill a hole through the roof directly lined up with the hole in the support box.

  • Take your metal flashing to the roof and scribe the hole from the inside of the flashing. Cut a square hole using a skill saw.

  • Use a putty knife to slide the flashing under the shingles where only the top of the flashing is not covered by the shingles.

  • Run a class A pipe down through the flashing and seal it to the support box. Use a high-heat silicone to seal the pipe around the flashing. The pipe should stick up a minimum of two feet out of the top of the roof with a 10-foot clearing radius.

  • Attach a P connector to the support box, which will you'll attach and seal to the class A pipe coming in from the roof.

  • Run the class A inside pipe from the heater to the support box. Use 45-degree elbow-pipe pieces at the support box P connector and/or the stove if necessary for connection.

Tips & Warnings

  • It is your responsibility to prevent smoke nuisance to neighbors. Be sure that your wood heater is in accordance with all safety and regulation laws.
  • Smoke from wood heaters contains numerous pollutants and chemicals that can be extremely toxic if inhaled.

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