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Best boiler installation pros near Grayslake, IL

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    Average homeowner rating
  • Verified reviews icon3.5k+
    Verified boiler installation services reviews

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

Avatar for All Temp Heating & Air Conditioning Inc
All Temp Heating & Air Conditioning Inc
4.6(
433
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install

Serving Grayslake, IL and surrounding areas

Approved

In business since 1946

Free estimates

Emergency services offered

"Phil came out to provide a free estimate for a new boiler. Appointment was scheduled for the same week and Phil called to move up the appointment due to a cancellation. He was very thorough, asked questions and answered all of mine. Would definitely recommend.
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+2

Response time3 days
Response rate100%
19 neighbors recently requested a quote
Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Grayslake, IL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"I’m extremely satisfied with Regional. We had three sump pumps that needed to be replaced (primary, secondary, and water powered backup). The quote was very reasonable, and they were able to do the work shortly after their initial visit. They replaced everything with Liberty pumps. Justin and Erich did the work and they were very professional. We had them quote out a couple of other items (replacing water heater, etc) and those quotes were also very reasonable. I will definitely hire them for future jobs."
17 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cahill Heating, Cooling, Electric, Plumbing & Sewer
Cahill Heating, Cooling, Electric, Plumbing & Sewer
4.8(
33
)
Oil Boiler or Radiator Heating System - InstallBoiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - Install+3 more

Serving Grayslake, IL and surrounding areas

Approved

In business since 1973

Free estimates

Emergency services offered

"Cahill installed my new furnaces in a professional manner and the units work very well. The annual service is thorough and complete. I am confident that the units are well maintained and not just given a cursory service. Installation of the ducts was done quickly and professionally and their advice helped me make the right decisions. They showed up to perform the work at the agreed time and completed the work efficiently. I didn't have to allocate a block of hours during which they might show up -- as with most service companies. I'm very pleased with this company."
Furnace Installations
Heat Pump Installations
Furnace Installations
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+7

Response time8 hrs
12 neighbors recently requested a quote
Recommended by90%of homeowners
High Caliber Electric LLC
5.0(
24
)
Oil Boiler or Radiator Heating System - InstallElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+2 more

Serving Grayslake, IL and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

At our company, we take immense pride in our wealth of experience, expertise, and the exceptional customer service we offer to meet our clients' needs. Our mission is to consistently deliver outstanding design work and drawings, from project initiation to completion. We place great emphasis on understanding and exceeding our customers' needs and expectations, ensuring that every interaction is conducted with the utmost professionalism. Our reputation is founded on top-notch service and quality, irrespective of the size of the project. Get in touch with us today!

37 neighbors recently requested a quote
Recommended by52%of homeowners
Avatar for Premier Comfort Heating & Cooling LLC
Premier Comfort Heating & Cooling LLC
5.0(
1
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Grayslake, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Here at Premier Comfort Heating & Cooling LLC, we take pride in providing the best services and satisfying our customer needs. We specialize in Air Conditioning Repair, Air Conditioning Contractor, Heater Contractor, HVAC Contractors, Heating Equipment Supplier, Heating Repair, HVAC Contractor, Air Conditioning Contractors, Air Conditioning, Heaters, Heating and much more. We look forward to your business and serving you. Contact us today (844)467-4822

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+19

Response time7 hrs
Response rate100%
7 neighbors recently requested a quote
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Install Boiler FAQs, answered by experts

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.

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.

The absence of heating or hot water, unusual noises like banging or gurgling, and visible water leakage are key signs. Abnormal boiler pressure, flame irregularities (for gas boilers), or pilot light issues may also signal trouble. Frequent cycling, soot or staining, and unusual odors, particularly gas-like smells, should not be ignored. Modern boilers often display error codes or lockout mode upon detecting issues. Uneven heating across radiators and rising energy bills without increased usage can further point to problems. Prompt attention to these signs is essential to prevent further damage and ensure safety.

While you’ll pay more upfront for a brand-new HVAC unit, you can save money in the long run. Here’s how to save on your new HVAC system:

  • When purchasing a high-efficiency system, your energy bills will be lower in the future.

  • You may be eligible for special offers from your local energy company.

  • Depending on the system, you may be eligible for HVAC rebates and tax credits.

  • Choose to replace your air conditioning unit and furnace simultaneously to save on labor and installation costs. 

The cost of heating oil fluctuates rapidly based on supply and demand, but the average price is between $4.00 and $4.50 per gallon, which means filling a standard 275-gallon tank would cost between $1,100 and $1,240. Much like automotive gasoline, the price of home heating oil changes constantly, so the only way to get an accurate and current price per gallon is to contact a heating oil delivery company. Some companies also offer contracts with a set price that should be an average cost over the contract term.

The Grayslake, IL homeowners’ guide to boiler installation services

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