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Selecting Furnace Efficiency
Furnaces have different efficiency ratings which are indicated as a percentage.
The higher the percentage, the more efficient the unit.
Higher efficiency furnaces produce the same amount of heat as lower efficiency units of the same output
BTU size (see "Selecting Furnace Size").
The difference is that the higher efficiency furnaces use less gas to do so, thereby saving you money.
80% efficiency is the lowest BTU rating of furnace offered by most manufacturers nowadays,
although it is still significantly higher than older furnace efficiencies which are sometimes as low as 60%.
We have multiple types of efficiency furnaces for you to select, 80% efficient and 93% efficient and 95%+ efficient.
Which efficiency unit you decide to install is up to you.
To help you select, you can use our Equipment Efficiency Comparison Calculator here to see how
much you might save in operating costs by comparing different efficiency units for your particular home.
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