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How Does a Residential Boiler Actually Work?

In the U.S., roughly 9 million homes have boiler heating systems. More than half of the homes with boilers are in the Northeast.

Even though boilers are rare in American homes, those who do have them become major fans. Boilers offer radiant heat that can't be beat in cold climates.

But, how does a boiler heat a home?

The good news is, it's not as complicated as you might think. Read on to learn what a residential boiler is and how it works.

Boiler vs Furnace: What's the Difference?

A boiler and a furnace are both types of central heating systems, but boilers use water and furnaces use air.

Boilers use hot water or steam to warm your house. The water or steam travels through pipes or radiators and warms the objects in your home.

Furnaces blow hot air through a duct system, which warms the air in your home.

How Does a Boiler Work?

A fuel source such as natural gas enters your home and travels to the boiler. The gas comes out through small jets where it's ignited and turned into a heat source. The heat from the ignited gas goes through the heat exchanger, which warms a water pipe or tank of water.

If you have a hot water boiler, the hot water will travel through the pipes in your floor radiators with the help of a motorized pump. Once the water has heated the room, it travels back to the boiler to get reheated.

If you have a steam boiler, the heat exchanger will continue heating the water until it turns to steam. The steam will rise to the radiators in your home. Once it's heated the room, the steam turns back into water and returns to the boiler to start the process again.

If you can't visualize the cycle, a how a boiler works diagram might help.

The burning fuel produces combustion gases which the venting system takes out of your home. Without this vent, you'd have a buildup of dangerous carbon monoxide gas.

Types of Residential Boilers

While the application of boilers in your home is always the same—they all provide central heat—there are three types of boilers.

Gas fired boilers use natural gas or propane, but are not an option if you don't have access to natural gas. Oil fired boilers require a regular supply of oil which you'll need delivered to your home. Electric boilers are very efficient, but are expensive given the high cost of electricity.

There are also three types of radiators, which bring heat into each room. Steam radiators are larger metal units you might've noticed in older homes.

Hot water radiators are small and sit along the baseboard of each room. Hydronic radiant floor heating uses a network of coils to warm the floor of each room.

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Is Your Residential Boiler Acting Up? Call 1-800-PLUMBER Today

If you have a residential boiler in your home, you probably don't give it much thought. When it goes out in the winter, your boiler is all you can think about.

Now that you know how boilers work, you'll understand what kind of repairs your plumber might have to make. If you're having issues with your boiler, find a 1-800-Plumber near you.

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We had to have someone come out today due to a sink and toilet leak. Swayze McLauglin was our plumber and he did a great job explaining the problem and how we could get it fixed. He was great at explaining price as well as what he was doing. Swayze was friendly and professional while he was here as well as working in these trying times with COVID-19 he followed all procedures and was great. We will be using yall the next time we need someone. Thank you so much Swayze for all your help!

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Chad was very informative and professional. He and his co-worker are a very rare breed in that they fully prepared to go to work and get the job done right then. I would definitely recommend and use again Chad an 1-800-plumber.

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As a consumer and customer I am very happy with 1-800-Plumber Air of Pearland. I really appreciate the concern Joe and his helper showed for my issue and for the work they performed. I highly recommend 1-800-Plumber Air of Pearland

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