Blog Post

What is the Difference Between Single-Stage and Two-Stage Furnaces?

Depending on your geographic location, the age of your furnace, and your ability to withstand the cold you have two options: a single-stage or a two-stage furnace. The main difference between these two furnace options is flexibility; a single-stage furnace is either off or on high, whereas a two-stage furnace can be on low, high, or off. Unless you’re living in an extremely cold climate or have upgraded your system already, you more than likely have a single-stage system in your home.

Why choose a two-stage furnace?

Two-stage furnaces will do your work for you, keeping your home at a comfortable temperature in the frigid, winter months. Two-stage furnaces have two-stage gas valves and a blower motor, allowing the furnace to run at two different speed settings. For example, in the mild winter weather it will run at a lower setting and in very cold winter weather, a two-stage system will run on a higher setting.

A two-stage system is smart, and saves you energy and money on unnecessarily high heating options. Let’s say it’s a cold winter’s day and you turn your heat on, immediately the furnace will be working at around 65% capacity. If, within a few minutes, the ideal temperature hasn’t been reached the system will kick up to about 80% capacity.

Along with the guaranteed temperature control, a two-stage furnace will make less noise, improve air quality through increased air flow, and save energy. A two-stage furnace may be a good option for you if you live in an extremely cold place, have the budget to upgrade, or have noticed inconsistencies in your home’s temperature. Give Nebrasky Plumbing, Heating & Cooling a call at 1.800.989.0299 and we can discuss the best option for you!