Furnace Btu For 1000 Square Feet

But before we buy an 80 000 btu furnace there s furnace efficiency to consider as well.

Furnace btu for 1000 square feet.

3 5 to 4 ton. Choose the 30 000 btu unit to make sure your comfort needs are covered. 2 5 to 3 ton. But there are also rule of thumb estimations you can use to pick a furnace size for your home.

The british thermal unit or btu is an energy unit. Having a little extra power isn t bad. But your hvac dealer only has air conditioners that handle 24 000 or 30 000 btus. For example if you re trying to heat 1000 square feet in a cold climate 30 000 40 000 btu s will add significant warm air to your home.

80 000 to 90 000 btu hr. It is approximately the energy needed to heat one pound of water by 1 degree fahrenheit. 1 btu 1 055 joules 252 calories 0 293 watt hour or the energy released by burning one match. For example the manual j calculation may say you need 25 000 btus for cooling.

2500 to 3500 sq ft. 90 000 to 100 000 btu hr. Furnaces are rated on their btus of energy consumption not their btus of energy output. 3 to 3 5 ton.

1 watt is approximately 3 412 btu per hour. For cooler climates a very broad estimate of furnace sizing is to select one that generates 40 to. A more efficient furnace will output more btus of heat than a less efficient furnace with the same btu rating. 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.

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. Up to 2 5 ton. If your btu requirement is between sizes simply go with the bigger unit. And in cold climates multiply the square foot number by 30 40.

For example if you re trying to heat or cool 1 000 square feet you would multiply 1 000 by 20 and get 20 000 btus per hour. The above square footages do not include the area of the basement.