The primary difference between a single-stage furnace and a two-stage furnace is how they regulate their heat output. Here’s a breakdown of the differences:

1. Single-stage furnace:

· Has one level of heating output: full blast.

· When the thermostat signals a need for heat, the furnace turns on at maximum capacity until the desired temperature is reached.

· Once the set temperature is reached, the furnace shuts off until the thermostat sends another signal.

· Simple, effective, and less upfront expense.

2. Two-stage furnace:

· Has two levels of heating output: high and low.

· When the thermostat signals heat, the furnace initially runs at the lower stage, providing a gradual heat output.

· If the first stage isn’t keeping up with demand, the furnace will switch to the higher stage for additional output.

· The two stages allow for more precise temperature control and increased energy efficiency.

· For the most part you can expect quieter operation and experience fewer fluctuations in temperature compared to single-stage furnaces.

Both types of furnaces serve the same basic function of heating a home. Two-stage furnaces offer more flexibility, efficiency, and comfort as their heat output adjusts to the needs of the home, while single-stage furnaces blow at maximum capacity.

So, which one is right for your home? Speak with one of our friendly Comfort Specialists and they’ll walk you through it!

As a reminder, the main areas we serve are:

OH: Sylvania, Holland, Maumee, Monclova, Waterville, Whitehouse, Perrysburg.

MI: Bedford, Lambertville, Ottawa Lake, Dundee, Temperance, Erie.