Top-rated boiler repair pros.

Best boiler repair pros near Thayer, MO

Enter your zip and get matched with up to 5 pros

Top-Rated Boiler repair pros in Thayer - Updated Nov 2026

Avatar for Air Scrubbers Air Duct Cleaning LLC
Air Scrubbers Air Duct Cleaning LLC
3.9(
332
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Thayer, MO and surrounding areas

In business since 2000

Free estimates

Credit card accepted

"There were some scheduling issues due to an emergency, but that wasn't necessarily the company's fault.  Overall, it was a good experience, and I was happy with the services.  The technician provided a lot of helpful information about duct cleaning, he didn't leave any messes, and he arrived on time for the service."
Recommended by77%of homeowners
Avatar for BNB Handyman Service!
BNB Handyman Service!
4.3(
6
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Thayer, MO and surrounding areas

In business since 2022

Free estimates

Credit card accepted

Thank you for finding BNB Handyman Service here on Angi! I will work with your directly from estimate to completion offering services for estate grounds keeping and home maintenance. I respond to calls and texts by order of appearance and offer labor warranties on all completed work. I appreciate any time spent leaving a review and referrals to friends & family. I will do same day service and offer competitive rates for routine clients. I look forward to discussing your next project and thank you for your interest in BNB Handyman Services!

Electric
Floor
Bed
Electric
Floor

+5

Recommended by80%of homeowners
Sears Heating and Cooling - Springfield
4.3(
5
)
Boiler or Radiator Heating System - Install or ReplaceGas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Thayer, MO and surrounding areas

In business since 1893

Free estimates

Warranties offered

Sears Home Improvement Products � Heating and Cooling \n \nSears can provide the right solution to your home improvement needs. We offer a full line of exclusive Kenmore� and Carrier� heating and cooling systems. Get the brands you trust from the name you recognize � Sears. Schedule your FREE In-Home Consultation today! \n

Recommended by100%of homeowners
CentralArc Welding Services LLC
New to Angi
Electric Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - Install - For BusinessElectric Boiler or Radiator Heating System - Repair+9 more

Serving Thayer, MO and surrounding areas

🎊 🎉 The new year brings new opportunities, and we are ready to grow. We are expanding our client base and building new partnerships, specializing in high-quality piping, structural welding, and custom fabrication with a commitment to safety, precision, and dependable results.

Tank inlet
Tank layout
Avatar for Joshua Deatherage Builders, LLC
Joshua Deatherage Builders, LLC
3.0(
7
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+13 more

Serving Thayer, MO and surrounding areas

In business since 1997

Free estimates

Emergency services offered

Joshua Deatherage Builders, LLC is your local full service Southern Missouri area remodeling contractor providing a wide range of home improvement services. We also provide services such as electrical and plumbing installations. Our Remodeling Contractor services complete your home goals with Residential Remodeling, Commercial Remodeling, New Construction, Plumbing, Electrical, Window Replacement, Roofing, Siding, Gutters, Flooring, Kitchen Remodeling, Bathroom Remodeling, Painting, Framing and Custom Homes. Serving Southern Missouri, office number: 417-204-4949.

Custom Homes
Kitchen Remodel
Bathroom Remodel
Recommended by42%of homeowners
Boiler Repair FAQs, answered by experts

Scale from hard water is hard to diagnose until it starts causing problems. If your area has particularly hard water, that’s most likely what your boiler is using. If scale build-up becomes a problem, it starts to cause decreased flow and heating, and eventually, valve failures as valves become blocked. Let boiler professionals know if you’re worried about scale and they can offer advice or implement a solution.

Most propane boilers last 15 to 20 years with regular maintenance and proper care. The lifespan depends on the quality of the unit, proper installation, and the level of maintenance. Investing in annual service can maximize longevity and efficiency. Routine inspections and timely repairs prevent early breakdown, ensuring your boiler heats your home for years to come.

A poorly maintained boiler can lead to serious issues like deadly carbon monoxide poisoning, so schedule regular maintenance services. Of course, it’s also a good idea to check your carbon monoxide detectors in your home to make sure they’re working properly. Moreover, when you forget to maintain your boiler, small problems can lead to something much more serious, which will cost you more money in the long run. Repairs average around $400, while a full replacement can total over $6,000.

Signs of needing a new expansion tank include visible leaks and a dull sound when you knock your knuckles against the tank (working tanks should sound hollow). A malfunctioning tank may also sweat with condensation, cause pipes to create loud noises when the system is turned off, and lead to very high-pressure readings on the boiler’s gauges. When in doubt, call for a professional inspection to find the source of the problem.

There are a couple of signs that will tell you it’s time to bleed the radiator. If the radiator is making noises, it’s typically because of trapped air, which you can release by bleeding the radiator. You can also test the radiator by turning on your heat and then placing your hand near the top and bottom of the radiator. If you feel cold spots, particularly at the top of the radiator, it’s time to bleed it.

The Thayer, MO homeowners’ guide to boiler repairs

From average costs to expert advice, get all the answers you need to get your job done.