A 2 000 square foot house would require 60 000 btus at the lower figure or 90 000 at the higher.
Furnace btu 3000 sq ft house.
Select your type of home.
Furnaces are rated on their btus of energy consumption not their btus of energy output.
If your home is 3 000 square feet you ll want a furnace that produces between 120 000 btus and 135 000 btus.
For example if a furnace is rated at 100 000 btus and is 80 efficient then the heat output will be 80 000 btus 100 000 x 8.
2 000 square feet x 40 btus 80 000 btu output required thanks to the equation we know we need 80 000 btus of heat.
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.
But before we buy an 80 000 btu furnace there s furnace efficiency to consider as well.
A good rule of thumb for unit sizing is you will want a system that will provide you 40 to 45 btus of heat per square foot of your home.
In harsher climates such as the dakotas up to 45 btus per square foot are appropriate.
However keep in mind that factors such as your climate zone sun exposure and the number of people living in your home may require you to adjust this figure.
But there are also rule of thumb estimations you can use to pick a furnace size for your home.
Square footages do not include the area of the basement.
With a less efficient furnace operating at 80 percent efficiency this would require a.
Multiply your square footage by 20 btus to get a general estimate.
Carrier furnace installation costs.
Up to 1500 sq ft1500 1800 sq ft1800 2200 sq ft2200 3000 sq ft readmore.
For cooler climates a very broad estimate of furnace sizing is to select one that generates 40 to.
A mid sized home of 2 000 square feet would need approximately 50 000 to 60 000 btu to heat it properly.
For a 2 000 square foot home you would want to install a carrier furnace with 100 000 btu capability which on average would cost around 3 980 to install if you were to install a carrier performance 90 59tp6 gas furnace you could expect to pay around 1 644 for the unit alone.
If you live in a moderate climate such as the pacific northwest you might only need 25 to 30 btus per square foot.
A more efficient furnace will output more btus of heat than a less efficient furnace with the same btu rating.