What Size Furnace To Buy

That means the furnace will produce 80 000 btu of heat.

What size furnace to buy. In milder areas choose one with an afue of 80. When it is time to buy furnace online choose a high efficiency furnace with an afue of over 90 in very cold climates. The price difference between the two types of furnaces can be 1 000 or more which may not be worthwhile in a milder area. A single btu is equivalent to 1 055 joules 252 calories or the energy released by burning one match.

Unlike a lot of other furnace models the mrcool 95 afue furnace wastes a minimal amount of fuel. Different furnaces of the same input btu have different efficiencies measured in percentages. One btu represents the energy needed to heat a single pound of water by one degree fahrenheit. If that s the boat you re in you need to make a change.

100 000 btu input x 80 efficiency 80 000 btu actual output. If the same 100 000 btu furnace has an efficiency rating of 93 it will produce. A btu is the energy required to heat a pound of water by one degree fahrenheit. For example a 100 000 btu furnace with 95 afue outputs 95 000 btu while a 100 000 btu furnace with 80 afue only outputs 80 000 btu.

You need to invest in a powerful high quality and energy efficient heater like the 95 afue multi positional gas furnace by mrcool. Sizing a furnace by btu rating. So when comparing furnace sizes make sure you are comparing apples to apples the output btu. The size of the home is the first obvious factor in determining the furnace size but there are many other considerations also.

But before we buy an 80 000 btu furnace there s furnace efficiency to consider as well. For example 40 000 50 000 60 000 80 000 and 100 000 btu input capacities. We need something stronger. Most manufacturers produce several sizes of each furnace model.

For example a furnace with an input btu can have an efficiency of 80. Whether a home is open with a few large rooms or closed with. For instance a furnace with 80 000 btu input and an 80 efficiency rating will only produce 64 000 btus. Choosing the right size and type of furnace is a job for a qualified central air conditioning contractor or dealer.

A furnace s size determines on how much heat it can produce in an hour. An example you can reference. The size of a furnace is based on how much heat it can produce in an hour as measured in btus or british thermal units. If that same furnace has an efficiency of 95 the furnace will produce 95 000 btu of heat.