Top-rated boiler repair pros.

Best boiler repair pros near Markham, IL

Enter your zip and get matched with up to 5 pros

TRUSTED BY MARKHAM, IL HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon1.3k+
    Verified boiler repairs reviews

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

Avatar for Porterhouse Heating & Cooling
Porterhouse Heating & Cooling
4.8(
218
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Repair or ServiceElectric Boiler or Radiator Heating System - Install+4 more

Serving Markham, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Great. I was out of state and my house and dog sitter called. My house temp, was 85! Look up Angie’s list. Called the business and explained the problem. They got the repair man out the next day...on a sun day!! My air was fixed by the repair man that day. My sitter said he was very nice .....price was great,,, I would have them again. This is the 2nd time I use Angie’s list."
Work truck
Certification
Business card
Response time9 hrs
17 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
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 Markham, IL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Prompt service with very little advanced notice. Technician removed old flame sensor and installed a new one in about 20 minutes. Pleased with technician and service, and will do business again them again if needed. Owner called to confirm service and sent a text with name and information about the technician before his arrival."
18 neighbors recently requested a quote
Recommended by100%of homeowners
Discovery Heating & Cooling, Inc.
4.6(
80
)
Gas Boiler or Radiator Heating System - Install

Serving Markham, IL and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"The boiler had needed some replacement pipes as well as the solution to the slight smell of gas when near the boiler itself. Prior to calling for service for these issues, I had removed the majority of the damaged piping and purchased all new of what I was able to remove. I couldn't remove the bushing that attaches directly to the boiler or the nipple that attached to that bushing to save my life. On the night prior to the day of my appointment, there was a snow storm and time moved ahead. I had forgotten to move my clocks ahead that resulted in my arriving about 20 minutes late. The repairman was kind enough to not only wait for my arrival, but to shovel part of the snow from my walkway that leads to the basement. This guy is just great. He removed the fused together bushing and nipple in no time flat. It was amazing for me to watch. I had to pick up a couple more pieces of pipe for my job to be completed and we scheduled to continue after I did so. Luckily, The pipe I needed was in stock and he was able to return the very next day, he removed my bushing and nipple, installed ALL of my pipes, and provided and replaced my leaking gas line. MY BUILDING NOW HAS HEAT AND I COULDN'T BE HAPPIER!!! Now I have to have the other parts of the building repaired that were damaged from when the boiler had stopped working and a pipe had burst. You won't be disappointed if you hire Discovery Heating and Cooling. If I have another related job in the future, I will definitely call Discovery. Thanks again Discovery."
Response time8 hrs
Recommended by87%of homeowners
Robert Anthony Renovations
5.0(
1
)
Electric Boiler or Radiator Heating System - Install - For BusinessElectric Boiler or Radiator Heating System - RepairGas Boiler or Radiator Heating System - Install+5 more

Serving Markham, IL and surrounding areas

Approved

At Robert Anthony Renovations, we specialize in high-quality interior and exterior home renovations with a focus on craftsmanship, detail, and customer satisfaction. We provide full-service remodeling and renovation solutions including kitchens, bathrooms, basements, interior painting, custom built-ins, custom multi-piece crown moulding, wainscoting, decorative accent walls, custom ceilings, drywall, flooring, decks, siding, and exterior painting.\n\nWe take pride in delivering clean, professional work that transforms homes and adds long-term value. Whether it’s a complete remodel or detailed finish carpentry, every project is completed with precision, reliability, and strong communication from start to finish.\n\nOur goal is simple — provide homeowners with quality work, honest service, and results that stand out.\n\nServices Include:\n• Kitchen Remodeling\n• Bathroom Remodeling\n• Basement Finishing\n• Interior & Exterior Painting\n• Custom Built-Ins & Trim Work\n• Crown Moulding & Wainscoting

Avatar for GROMM Electric LLC
GROMM Electric LLC
New to Angi
Electric Boiler or Radiator Heating System - Install - For BusinessElectric Boiler or Radiator Heating System - RepairGas Boiler or Radiator Heating System - Install+5 more

Serving Markham, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Electrical professional with 20 years of hands-on experience in residential, commercial, and heavy industrial electrical construction. Raised in a family-owned electrical company that grew from a 10-person shop to a 500-electrician operation serving projects nationwide and internationally.\n\nExtensive field experience across high-demand environments including power plants, steel mills, paper mills, chemical plants, oil refineries, coal mines, Air Products facilities, and large food manufacturing plants.\n\nHighly skilled in:\n • Low-voltage systems, fire alarm, controls, and automation\n • Medium-voltage installations and power distribution\n • Underground services and excavation coordination\n • Bucket truck and service work\n • Smart home and modern electrical systems\n • Residential, commercial, and industrial construction from ground-up to retrofit\n\nCertifications & Credentials:\n • Chicago Licensed Electrician\n • OSHA 10 & OSHA 30\n • MSHA Certified\n • CPR Certified\n • NCCER Certified\n\n

...
Showing 1-10 of 172
Boiler Repair FAQs, answered by experts

Your house may be cold even if the heat is on because of bad insulation, gaps in doors, small holes pulling hot air from the home, or excess humidity. The heater itself might be malfunctioning. For this problem, you’d need to talk to an HVAC pro. If you have a gas heating system (most do) this should be considered an urgent job as natural gas could be leaking in your home.

Addressing gaps and cracks reduces heat loss and improves energy use.

An expansion tank must always be installed on the supply side, which is the side where the boiler sends water out to heat the systems. That placement allows the water to push against the air and condense properly as it is heated, then circulated through the system. Professional installers can recommend the best place on the supply side for an expansion tank.

Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater.

Yes. Boilers need water to run without overheating, also known as dry firing. If you run it without a sufficient volume of water, either because of a burst pipe or a leak, you run the risk of damaging your machine or jeopardizing the safety of your home as a whole. When in doubt, shut off your boiler and repair any plumbing issues before turning it back on. Alternatively, consider installing a low-water cutoff (LWCO) before any issues arise. This gadget will protect your boiler by monitoring water levels and automatically shutting it off if it gets too low. 

The Markham, IL homeowners’ guide to boiler repairs

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