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What You Need to Know about Modulating Furnaces

July 16, 2022
What You Need to Know about Modulating Furnaces

A modulating furnace is ideal for older homes or one where you plan to live long.

To help you understand modulating furnaces better, we wrote a basic guide that tackles what they are, their pros and cons, and how much they cost.

What is a modulating furnace?

A modulating furnace differs a bit from the furnaces most of us know and have at home. It doesn’t make as much noise as a blower at 100% capacity.

Moreover, it gives off very comfortable and consistent heating throughout various rooms thanks to its longer cycles.

Because of its low-intesity heating method, it uses less gas as fuel, can reliably last longer, and work more efficiently compared to its standard counterpart.

Features of a Modulating Furnace

Features of a Modulating Furnace

Let’s take a look at the features of modulating furnaces below:

1) Modulating Gas Valve

A modulating gas valve is a crucial feature in this type of furnace. Its job is to adjust the heat according to the precise temperature you’ve set on the thermostat.

More than that, it serves to keep the heating in the room consistent as you’re using it. That means the space won’t have irregular cold spots.

2) Automatic Speed Control

Sort of like a smart sensor, the automatic speed control allows the modulating furnace to operate at the best minimum output. It also reduces the noise that’s coming from the machine.

Another important function speed control has is to facilitate the filtering of allergens and dust in the air. This will help keep your home’s indoor air environment clean and hygienic.

3) Secondary Heat Exchanger

Most modulating gas furnace models are equipped with a primary and secondary heat exchanger.

The first works to transform the cool air into warm, comfortable air, and the second assists the primary heat exchanger by absorbing its leftover heat, thereby, keeping its operation at peak efficiency.

So if you are going to buy a modulating gas furnace, we strongly suggest picking one that has both.

How much does a modulating furnace cost?

Getting a modulating furnace is costlier than other furnace types. In America, a modulating furnace will cost you between $5,000 and $7,000 on average, with installation included.

Although the initial price is expensive, you can get great comfort and energy efficiency with it and save up on utility expenses in the long run.

A Summary of the Pros and Cons of Modulating Furnaces

A Summary of the Pros and Cons of Modulating Furnaces

Like all products, a modulating furnace has its pros and cons. Check them out in the table below:

Modulating Furnaces
ProsCons
Brings gentle, consistent heating

Suitable for old houses or one where you plan to not move out of in a while

Low operating costs

Easier to maintain and lasts longer

Works with minimal noise

Expensive to buyCostly installation service

Is it worth buying a modulating furnace?

It depends. You would have to assess your heating needs, budget, and available space beforehand.

If you want low-strength, pleasant, efficient, and filtered heating, a modulating furnace can be for you—and more so if you have a small and old house that’s around 30 to 50 years old.

This is because it can cover the whole space and has less likelihood of breaking down due to its conservative power use.

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