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homeguides.sfgate.com/many-btus-furnace-need-house-100318.html

4 Measure the BTUs for the Size of a House; ... you'd need a 100,000 to 112,500 BTU furnace to heat your 2,500-square-foot home. ... Suppose your home uses 1,500 therms of natural gas annually ...

www.irishheatandair.com/what-size-furnace-do-i-need-for-a-1500-square-foot-home

Calculating Your Furnace Needs. The size of furnace you need depends mainly on the size of your home. As mentioned, a typical home in Modesto is 1500 square feet. Generally in a Californian climate you will need 25-30 BTU per square foot. BTU is a measurement of a furnace’s heat output. 1500 sq feet by 25 BTU gives us a 37,500 BTU furnace.

www.reference.com/home-garden/size-furnace-house-25ae0003cb3f12d6

How Do You Size a Furnace for a House? There are several factors to consider when sizing a furnace for a house, including the square footage of the building and the climate it occupies. A rule of thumb is to allow 25 to 30 BTU per square foot for moderate climates and up to 45 BTU per square foot in harsher climates.

What size BTU furnace do I need to heat 1500 sq ft house? I plan to buy 80% efficiency furnace to replace the old monster that is down there now. I'm thinking I many only need 50,000 but 75,000 may be needed.

www.hunker.com/12411867/how-do-i-size-electric-furnaces

How Do I Size Electric Furnaces? ... Multiply the Btu number you've selected by the square footage of your home, to calculate the Btu output of the furnace you need. If you live in a 1,500 square foot home, and your Btu per-square-foot needs are 45, your calculation will be 45 x 1,500 = 67,500 Btu output. ... The Best SEER Air Conditioner for a ...

homeguides.sfgate.com/estimate-gas-furnace-size-20739.html

1 How Many BTUs Does a Furnace Need for a House? 2 Determine Proper Furnace Size; ... equipment companies is to provide at least 25 to 30 Btu of heat per square feet in the home for a moderate to ...

furnacedepot.ca/btu-charts

BTU Charts Furnace Output and Air Conditioner size for a Bungalow Bungalow Area [sq ft]* Furnace Output [BTU/hr] Air Conditioner size [ton] Built after year 1980 Built before year 1980 Built after year 1980 Built before year 1980 up to … Readmore

modernize.com/home-ideas/31882/what-size-furnace-does-my-home-need

What Size Furnace Does My Home Need? If you don’t know the square footage of your home, it’s fairly easy to calculate it. To measure the square footage for your home, multiply the length and width of each room that you wish to heat. Add the measurements for each room together and you will come up with the square footage of your house.

www.airmakers.ca/air_conditioner_and_furnace_sizing.php

Many factors are involved when determining what size of an air conditioner or furnace would have the required power output to cool or heat your home. These factors include the extent of exposure to the sun and the outside air, the thickness, and type of outside wall insulation, the size, type and number of windows and outside doors, the ceiling height, etc.

www.hunker.com/.../how-big-of-a-furnace-do-i-need-for-a-1600-square-foot-house

So this furnace would work very well for an older house in the Los Angeles or Atlanta area, and be more than enough for a well insulated, new home. If you're in Washington, D.C., in the 1,900-square-foot home, and the furnace you're considering has an efficiency of 80 percent, you'll want your input rating to be 100,000 BTUs.

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