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Best boiler installation pros near Oswego, IL

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    Average homeowner rating
  • Verified reviews icon1.4k+
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in Oswego - Updated Nov 2026

Avatar for Home Comfort Systems Inc
Home Comfort Systems Inc
4.9(
315
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Oswego, IL and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"Home Comfort Systems did a fantastic job with the replacement of my furnace (and my A/C five years ago). Steve is a highly reputable person and explains things easily for people not in the Heating & A/C industry. He is very straight-forward with his quote and doesn't try to pressure or scare you into purchasing something you do not need. Their 10-year labor warranty is also very impressive, and they stand behind their work. A couple of weeks prior, they were able to take a look at my old furnace right away despite having tons of calls due to the first cold snap of the year. The furnace install only took about three hours and was smooth as can be. The installer took great care in making sure floors were protected when hauling equipment in and out of the house. He also made sure to repair some ductwork that extended off the furnace. My suggestion is to make sure you call Home Comfort Systems if you need service or replacement of your furnace and/or air conditioning."
Additional Photos
Response time8 hrs
Response rate100%
10 neighbors recently requested a quote
Avatar for G & R Heating & Air
G & R Heating & Air
4.6(
139
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Oswego, IL and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"The service tech. was thorough and efficient. We appreciated that he verbally explained what was done and also left us with an even more complete printout of the condition and operation of our furnace and humidifier. The Angie's list clean and check certificate of $49.00 was part of the total cost. This is the first time we used G & R Heating and Air. We plan to call them again when needed."
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+20

Response time11 hrs
Response rate100%
142 neighbors recently requested a quote
Avatar for TR Miller Heating, Cooling, Plumbing and Electrical
TR Miller Heating, Cooling, Plumbing and Electrical
4.5(
112
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Oswego, IL and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"They came even at a busy time to assess what needed to be done. I was given plenty of information and my questions were answered. I expect tomorrow’s furnace instsall will go just as well. I have had ac units and furnaces installed by Miller and been very pleased. A fine company."
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+1

5 neighbors recently requested a quote
Recommended by77%of homeowners
Midwest Climate Control
4.4(
87
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install

Serving Oswego, IL and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"We just had Corey install our new Ecobee4 thermostat. He is quite possibly the nicest and most professional technician we have ever had in our home. He was meticulous and courteous. We will definitely call this company again, if we ever have any heating or cooling issues. 5 stars!!!"
Response time2 days
18 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Simple Fidelis Heating and Cooling
Simple Fidelis Heating and Cooling
New to Angi
Gas Boiler or Radiator Heating System - Install

Serving Oswego, IL and surrounding areas

Approved

Warranties offered

Small jobs welcome

Offers commercial services

Semper Fidelis Services brings military-grade discipline to HVAC and plumbing. Founded on the principle of being "Always Faithful" our team offers 10+ years of technical experience, including an AAS in HVAC/R and Universal EPA certification. We specialize in high-quality, reliable residential and commercial services with a strict commitment at doing the job right the first time.

Robert Anthony Renovations
5.0(
1
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install+1 more

Serving Oswego, 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
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install+1 more

Serving Oswego, 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

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Install Boiler FAQs, answered by experts

Most installations take 2-5 days, including old system removal and setup.

You can use a boiler and a furnace, although it’s not common to use both for whole-house heating. For example, your furnace may take care of HVAC heating through your vents, while a boiler powers your floor-based radiant heating in the bathrooms. Mixing and matching like this gives homeowners a variety of heating possibilities.

The radiators closest in proximity to the boiler heating system will heat up first. Radiators in rooms farther away from the boiler will take longer to heat up and may be the coolest rooms in the house. The radiator unit itself should heat up evenly; otherwise, there may be trapped air inside it.

Steam boilers require flushing at least every six to 12 months to keep them operating effectively for as long as possible. Depending on your water quality and frequency of use, you might need to do this more frequently. The flushing process helps to remove problematic buildup of sediments. While a boiler contractor near you can perform a thorough annual flush, learning how to drain the system yourself means you can do this monthly if you experience speedy mineral accumulation because of hard water. 

The best way to compare HVAC quotes is getting a few detailed quotes from local companies with good reputations. Then, go over the quotes line by line. Protect yourself by insisting on in-person estimates that include equipment manufacturer names, model numbers, SEER ratings, amounts and numbers of materials, details of warranties on equipment and labor, and other specifics. 

Knowing the exact equipment and materials is the only way that you can fairly compare quotes. Quotes that are much lower than others can be a sign that the company isn’t providing the best quality service or materials.

The Oswego, IL homeowners’ guide to boiler installation services

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