Single Stage Furnace Vs 2 Stage Furnace

A single stage furnace has two settings.

Single stage furnace vs 2 stage furnace.

Single stage furnaces offer basic on off operation. A single stage furnace the most basic design available has a fixed gas valve and a single speed blower fan motor. Two stage or dual stage furnaces have three settings. On and off that is your furnace is either running at maximum capacity or not at all.

Single stage furnace pros. Single stage furnace features. Runs at 100 capacity all the time. Off on low mode and on high mode.

If a furnace is one stage or is too big for your house again it will kick off more often and spend less time filtering the air in your house. Most of the time the furnace will run on the lower setting. Also one reputable contractor recommended a single stage furnace stating that his experience is a two stage furnace in a two story house with our layout pretty typical doesn t work effectively. This furnace has only two settings.

Our home was a one story ranch and about 10 years ago we remodeled and added a 2nd story now 2200 sq ft home approx. Run at 70 capacity most of the time but can run at 100 too. At that time the contractor added zoning to our existing furnace. A single stage furnace costs less to install than a two stage furnace and will certainly keep your home warm however it does so at the expense of higher heating bills and wider temperature swings.

This option because it is an older style and less energy efficient will cost you less to purchase outright. For more information on the differences between a one stage and a two stage furnace try this short video. How single stage vs two stage vs variable capacity furnaces differ. In single stage gas furnaces the gas valve burner comes on at 100 capacity when the thermostat calls for heat.

Single stage vs two stage furnace. Less expensive single stage furnaces cost about 500 less than comparable two stage models so they make sense on a tight budget. More air moved means more air filtration. It stays at full capacity until the inside temperature satisfies the thermostat.

Does single stage or 2 stage matter if each floor is zoned. Single stage furnace cons. Whether it s a mildly chilly fall evening or a bitter cold winter night the furnace runs at the same setting. Two stage furnace features.

A single stage furnace is also a wise option if you don t plan to stay in your home long term. Furnaces cost less are less likely to break repair costs are low efficiency is low to average. They burn more fuel increasing your energy costs. Not as efficient single stage furnaces waste more energy than two stage furnaces.

As soon as the furnace turns on it starts running at full blast. All furnace brands make at least one single stage furnace.