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How Much Does It Cost To Repair A Boiler?

National Average Change Location | View National
Typical Range
$184 - $582
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On average, boiler repair costs $365 nationally, with most homeowners spending between $184 and $582. This data is based on actual project costs as reported by HomeAdvisor members.

Most boilers and radiators need repair and service in order to continue working at optimum efficiency. Boilers are relatively efficient, but not always easy to fix. Hiring the right professional that offers a solid warranty on their workmanship is essential in keeping your home comfortable.

How does the system work?

Generally, a hot-water heating system consists of a boiler heater with water, a network of pipes that distributes the water, and radiators or radiant flooring that heat various rooms. Controls include a combination gauge that lets you check water temperature and pressure and lets you know when the boiler needs water or is malfunctioning. In some systems, a pressure-reducing valve takes care of the water automatically. The typical system also has an expansion tank that must be properly charged with air to prevent the water from boiling. Newer systems usually locate the expansion tank on the basement ceiling near the boiler; they also include a purge valve to release water and let in air as needed. Older systems sometimes have the expansion tank in the attic and include a gauge glass similar to that on a steam boiler.

Common Issues

Because they have few mechanical parts, hot-water heating systems usually perform reliably for many years. The most common problems are with the expansion tank or a circulator rather than the boiler. A hot-water system may produce no heat or poor heat and leaks can occur. These can be attributed to many problems from improper water levels to mineral deposits to a pilot or burner ignition malfunction. Other common problems are that some radiators may not heat while others do or your pipes may make a clanging noise. Whatever your issue, hire a professional to fix it. When dealing with electrical systems and water - you don't want to take any chances with your safety.

Repair Cost Factors

The best way to keep your costs down is to perform regular maintenance on your system. Most problems that occur with your boiler are "nickel and dime" expenses that will add up. It's always less expensive and less of a hassle to try and repair your boiler than it is to replace it. Boilers can last 20 years or more and by keeping it in working order, you won't find yourself in a cold shower facing an emergency situation to get your boiler fixed. Some insurance companies offer "boiler insurance" that can help you alleviate the costs and maintenance costs accrued. Most boiler technicians will charge by the hour and you may miss a day of work in order to let the repairman in.


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mosella craig More than 1 year ago
Thank you home advisor for giving me the estimated cost for my boiler repair. It gave me an idea of what my out of pocket cost would be. Also, thank you for the common issues section, all of it was useful and very informative.
Delsirene Scott 10 months ago
Thanks for such prompt response on the project cost! How much will my project cost? IĀ also need to find a pro who will work on the project asap! Thanks in advance!
richard bell More than 1 year ago
Jacqueline Higgins More than 1 year ago
Thank you for providing this information it was very helpful in letting me know what to expect.

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How do we get this data?

  1. Homeowners visit to find a top-rated pro to complete their home improvement project or repair.

  2. Once their projects are completed, the members log in to their accounts and complete a short cost survey.

  3. After compiling and organizing the data, we report it back to you.