Get matched with top boiler installation pros in Markham, IL

Markham homeowners rate boiler installation pros in our network

4.4

(922 reviews)

Top-rated boiler installation pros.

Find Boiler installation pros in Markham

Avatar for Porterhouse Heating & Cooling
Porterhouse Heating & Cooling
4.8(
217
)

Serving Markham, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Within 5 minutes after Roy walked in, I knew I was speaking with an expert. He talked me out of wasting money on what I wanted (getting rid of boiler and replying on furnace) telling me about how everyone in the city during -40 degree nights was will freeze and if I keep the boiler I'll be comfy. He also talked me out of choosing a heat pump, saying in Chicago it will cause problems in the dead of winter and then I'll be out of luck. Initial estimate was only to replace the 60 year oil leaky boiler and 40 year old loud AC and furnace. Came in, did the work quickly, and when we were doing final inspection he pointed out where my last remaining original furnace was having problems. Gave me a great price to just get the the last furnace and AC done (AC was 40 years old). I know they won't be the cheapest but if you want someone you can trust who will guide you with his 30 years of experience and teach you the finer details of heating and cooling while delivering quality work, go with Porterhouse. I won't trust anyone else."
Work truck
Certification
Business card
Response time9 hrs
17 neighbors recently requested a quote
Recommended by94%of homeowners
Discovery Heating & Cooling, Inc.
4.6(
80
)

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
1 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Sunset Heating & Air-Conditioning
Sunset Heating & Air-Conditioning
4.4(
8
)

Serving Markham, IL and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Chose him due to the reviews and the price was right for my budget. The contractor who did the installation was good. Only thing I didn’t like was the fishing tactics like Mr Jackson was willing to upgrade the thermostat but after furnace was installed, nope. He said one I had was still good. Also the bullying to put in the reviews for the company. See that’s why he got 5 stars."
FURNACE
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Furnace installation

+1

Response time11 hrs
4 neighbors recently requested a quote
Recommended by28%of homeowners
Avatar for Rams Mechanical Heating & Cooling
Rams Mechanical Heating & Cooling
5.0(
4
)

Serving Markham, IL and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Family-Owned. Community-Trusted. Comfort Delivered. Rams Mechanical Heating & Cooling - for Home and Business. We're more than just an HVAC company - we're your neighbors. WE OFFER 0% APR FINANCING!\n\nWe look forward to building a lasting relationship and guarantee your satisfaction!\n

5 Ton Condenser
New Evaporator Coil
Coil Installed
Condenser Installed
Old Condenser

+1

Response time1 day
3 neighbors recently requested a quote
Robert Anthony Renovations
5.0(
1
)

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

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

Avatar for TDH Mechanical Heating & Cooling Contractors
TDH Mechanical Heating & Cooling Contractors
4.7(
366
)

Serving Markham, IL and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"This is by far the best company I've ever dealt with for HVAC... They made an appt to come out at 7am to replace my boiler and they were here at 6:50am. Jorge was awesome I would highly recommend them. A+"
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+18

Recommended by94%of homeowners
Avatar for Climate Master Mechanical
Climate Master Mechanical
4.9(
281
)

Serving Markham, IL and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"Climate Master did a fantastic job servicing our furnace boiler for a seasonal tune-up. Chuck answered all my questions and offered helpful tips and explanation of how to properly care for the system. He was reassuring and explained that there were no problems when I wasn't sure if a sound I had been hearing meant something was wrong. Kimmie was pleasant and helpful when scheduling. Thanks, guys!!"
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Installation of trash and linen chutes at Palos Community Hospital!
Installation of radiant floor heat! We install snow melt systems also.

+9

Recommended by96%of homeowners
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Install Boiler questions, answered by experts

If you want to have hot water in your home and part of your plumbing system, you'll need a hot water heater. An alternative may be to heat water as you use it, such as by boiling what you need on the stove. But that's much less efficient and takes considerably longer than hooking up a water heater. Another option is to rely on appliances, such as a dishwasher or washing machine, that heat the water themselves.

It can take anywhere from four hours to three days to replace a boiler with a new one. How long your particular boiler installation takes will depend on whether you need a gas line installed and if you’re switching to a new boiler system. 

Replacing a combination boiler or standard boiler with the same system should only take four to six hours. Meanwhile, switching from a conventional boiler system to a combination boiler system could take a few days.

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.

No, there isn’t always water in radiators. In a one-pipe system, water is constantly circulating from the boiler to the radiators and back. In a two-pipe system, water travels through two separate channels: one that goes to your radiators and one that returns back to the boiler so it can heat up again.

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

The Markham, IL homeowners’ guide to boiler installation services

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