Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Should I insulate the fresh air intake?

Tundra
Tundra Member Posts: 93
Do not insulate the combustion air. This will allow the combustion air to warm somewhat. You should use at least eight feet of 4" metal pipe on an outside air intake. I consistently use twice that with good results.

Comments

  • Steve Garson_2
    Steve Garson_2 Member Posts: 708
    Should I insulate the fresh air intake?

    I have twenty feed of 4-inch steel ductwork that brings fresh air to my oil burner with a Fields Controls sleeve.

    Is it worth the money to insulate this pipe to prevent the heat drain?

    Is the boiler flame temperature any different when it is fed with 0* air versus 70* inside air? The thing I like is that the clothes dryer lint will no longer clog the burner vents.
    Steve from Denver, CO
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,323


    Probably not mandatory that you insulate it if you are not getting condensation on it, Combustion is better if the air is warmer-but if you insulate it won't the air stay colder???

    Ed
  • Steve Garson_2
    Steve Garson_2 Member Posts: 708


    Yes, the insulation will make the air colder. So since there is no condensation, sounds like I should leave it alone.
    Steve from Denver, CO
This discussion has been closed.