To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Need to contact us? Visit

Need help on getting right size for 2 furnaces

AbsolutefrigidAbsolutefrigid Member Posts: 1
Thanks for taking my questions in advance:

1. Home is in the U.P of Michigan, sits right on Lake Superior only heating is a wood burning stove, needs furnace for heating. It has 2 floors, only heating bottom floor 2000 sqft,. In the middle of the living room (25x25) it has a vaulted ceiling going about 40 ft. It will be using LP gas I'm thinking it will need a 100 BTU furnace or maybe 120 BTU? What do you think?

2. House is in UP of Michigan sits right on lake Superior, heating is an oil furnace which is about 45 years old, house is that old and windows are single pane 1200 sqft It will also be using LP gas. I'm thinking it will need a 90 t0 100 BTU furnace, what do you think?


  • JStarJStar Member Posts: 2,668

    Could be any size from 10,000 to 1,000,000 BTUH. You need to perform a proper heat loss to find out.

    Ae you a contractor or homeowner?
    - Joe Starosielec
    [email protected]
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!