Single Stage Gas Furnace Vs Two Stage

The first stage of this type of furnace operates the majority of the time in most climates and runs at about 65 of the furnace s full capacity.

Single stage gas furnace vs two stage.

Not as efficient single stage furnaces waste more energy than two stage furnaces. You ll get a gentle steady flow instead of intermittent blasts. Single stage furnaces are the most affordable. Modulating furnaces cost 20 to 30 more than 2 stage furnaces though that gap will probably close as the technology is used more often.

Two stage furnace advantages because of its dual power modes a two stage furnace can even out hot and cold spots as well as diminish temperature fluctuations in your home. For example look at gas furnace prices for these 3 goodman models. The difference between single stage and two stage furnace is the single stage furnace has only one heating output. They burn more fuel increasing your energy costs.

If it s rated at 80 000 btu s it will only operate at that capacity. Two stage gas furnace valves can open at either about 70 or 100. Beware of the two stage furnace hype certain heating contractors will rave about the claimed benefits of the two stage furnace. A single stage furnace is also a wise option if you don t plan to stay in your home long term.

Dramatic hot and cold fluctuations occur more commonly with single stage furnaces because the unit is either running at full power or not at all. Two stage furnaces cost more 10 to 20 more depending on the brand and series. Most of the time the furnace will run on the lower setting. That means that the 100 000 btu furnace can operate at 70 000 btus per hour or at 100 000 btus per hour.

Most homeowners find that two stage furnaces are quieter than single stages furnaces and they usually don t need to adjust their thermostats as often. Less expensive single stage furnaces cost about 500 less than comparable two stage models so they make sense on a tight budget. More stable temperatures when running at its lower setting a two stage furnace provides a lower volume of warm air over a longer period. These furnaces run for longer periods of time but they provide more even heat distribution throughout your home.

Two stage furnaces also known as two speed furnaces operate much more efficiently than a single stage furnace. Off on low mode and on high mode. Likewise a 95 percent afue single stage furnace is more efficient than a 90 percent afue two stage furnace. If it is a 100 000 btu per hour furnace it is always burning at the 100 000 btu rate.

Two stage or dual stage furnaces have three settings.