A two-stage gas furnace is one of the best tools available to heat your home efficiently and effectively all winter long. Not only will they deliver the comfort you desire, but they can save you money at the same time. But how do they perform better than a single-stage unit? And are they worth the extra money?

Is a Two-Stage Gas Furnace Bigger & Better?

A two-stage gas furnace isn't always bigger than a single-stage unit. In fact, there are single-stage furnaces that can produce just as many heating BTU's as any two-stage on the market. However, a two-stage is definitely better. A traditional gas furnace is either on or off. It is either putting out heat or it is not. A two-stage unit has more options. Obviously, it can be either on or off, but it can also operate at partial capacity. This allows it to moderate operating performance. Instead of going full blast constantly, it runs most of the time at 60-65% capacity. Which means that it heats more evenly, uses less fuel, and filters air more effectively. And that superior even heating can really add up. After all, the more fuel you burn, the more money you spend. A two-stage furnace that operates for longer at a lower capacity often needs less energy than a single-stage operating for a shorter amount of time at a higher capacity. Plus, you enjoy more even heat, because the longer operating time reduces cold spots. Those can creep up due to poorly positioned air ducts or short-cycle furnace operation. So, if you're in the market for a new gas furnace, you should seriously consider a two-stage system. They can cost a little more up front, but you get better air quality, better comfort, and real savings long term.

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