The easiest and best way to establish your BTU requirements is to look at your
There is normally a label on the furnace that tells you the BTU
If your furnace is 90% efficient, you may have to multiply that
amount by 0.90.
If not, call the manufacturer or go to their website with your
and they will tell you the rating.
Any furnace rated at 105,000 BTU NET output or less, can be
generally be replaced with our
Shaver Pro 165,
assuming that it heats your home well now. Of course if a furnace is
oversized (e.g 100,000) and can really
heat your home with 80,000 BTU, then that should be considered. Use
square footage estimates below.
The Shaver 165 STORES 164,000 BTU, ready for use, unlike others who
phony numbers of what a furnace can do at maximum
which may be 20 minutes.
Also remember, that the home should be no bigger than 4,000 sq feet,
(to use a 165)
unless in a southern climate like us in AR or in NC. See listings HERE
But remember, it's more critical to have a heat exchanger with the
If the heat exchanger is too small, you will never get enough heat,
no matter how big the furnace is!
A smaller one, the Shaver 140 is 134,000 BTU for climates way