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Best boiler installation pros near Cortland, IL

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TRUSTED BY CORTLAND, IL HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon259
    Verified boiler installation services reviews

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

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 Cortland, 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
Avatar for Rest Assured HVAC, LLC
Rest Assured HVAC, LLC
4.9(
16
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Cortland, IL and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

Rest Assured HVAC is open Monday - Friday 8am-5pm (regardless of hours listed on Angi/HomeAdvisor). \n \nWe are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. 24/7 Emergency Service available. \n \nRest Assured HVAC\nElgin, IL 60124\n(847) 224-2420\nhttps://RestAssuredHVAC.com

Amana Gas Furnace
Amana Heat Pump
Response time5 hrs
1 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Innovation Heating & A/C
Innovation Heating & A/C
5.0(
8
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Cortland, IL and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

We are a family-owned business, founded by Oscar Contreras in Rolling Meadows IL, and we're grown to be an HVAC leader in Northwest Suburbs. We're proud to say that most of our customers are repeat customers. The reason for that is clear. We offer superior craftmanship, honest communication, and great clear service. We work together with a common goal of bringing happiness and satisfaction to all our customers. With this goal in mind, we offer honest opinions regarding services & installations. We take pride in every aspect of our business from a simple service call to the most difficult installations. We have built our business on recommendations by word of mouth on behalf of satisfied customers. If you need a service, installation or have a question, please give us a call @ (224)-558-1516

Recommended by100%of homeowners
Avatar for AVA Quality LLC
AVA Quality LLC
4.9(
7
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Cortland, IL and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"Owner provided options for 4 or 5 manufacturers and several models for each manufacturer. Company always showed up when they said they would. Did a professional job installing the furnace and cleaned up after the installation was complete. Sheet metal work was good. Furnace is working very well. I plan to have them install a replacement air conditioner this spring. Very happy so far."
it can't breath
AC Unit service
AC Unit service
AC Unit service
Additional Photos

+3

Recommended by100%of homeowners
Avatar for The Furnace Guy
The Furnace Guy
4.9(
4
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving Cortland, IL and surrounding areas

In business since 2020

Free estimates

Emergency services offered

Our company welcomes you to experience a tradition of customer satisfaction that will exceed your greatest expectations. Our professionalism and quality craftsmanship will accurately reflect your tasks and lifestyle. We are known for our prompt service and superior attention to detail. You can count on us to get the job done right the first time. We wlll meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. You'll be pleased you did. Thank you

Response time2 hrs
Response rate94%
Recommended by75%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Cortland, IL and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Sooo....first, Jim is a very nice guy.  However, Jim now works in Nashville during the week and is only home to the Huntsville area on the weekends.
My first impression of him was that he was awesome.  My computer system had crashed because I pulled the plug during a thunder storm before the computer fully shut down which resulted in the computer hanging up.  Jim took my call while in Tennessee and suggested how to fix the system.  For this I am very grateful.

What happened next was I had him come and check my computer to make sure everything was working properly.  He came to my house and spent an hour tweaking it (basically running various checks on the system), for which I paid him $50.  He suggested that my laptop would work much better if I had Windows 7 and increased my RAM up to 4 GB.  He said he could install it for me for (including the RAM) for about $160.  We met the following weekend for the handoff and he loaded Window 7.  When I received the call it was ready, the bill was $227.50.  I was surprised that is was $70 more than quoted, but paid it anyways.  When I asked about the RAM, he mentioned he did not upgrade the RAM and this would be another $60.  I was a little discouraged at that point since I felt like I was being taken advantage of, but the guy is relatively nice, so I said to go ahead and order the RAM.  He did so and the following weekend was supposed to install it.  Due to some personal things in his life, he wasn't able to install it, so I picked it up since I had to go out of town and could use the IT guy at my new location to install it for me.  When we went to install the RAM, the system wouldn't let us do it since my particular type of laptop can only take 2GB of RAM max.  If Jim had gone to the crucial.com website (where he bought my RAM) and entered my computer system on it, it would have told him the max amount of RAM that could be installed on that unit.  He did not do that.  He is supposed to refund my $60 this next weekend.

I think if Jim wasn't burning the candle at both ends by having a job in Tennessee during the week and trying to run this business on the weekends, it would've been a better experience.  Perhaps taking a few extra minutes to SLOW DOWN and write out an estimate of everything he would need for the job including the prices would ensure people know up front how much the repair would/should cost so they can budget accordingly.  I think if he had taken that approach, it might've been a better experience.  So now I am stuck with a laptop that runs slower because Windows 7 uses more memory and a laptop that can't be upgraded to more RAM.  Basically, the last step which cost me almost $300 was not necessary.  If you need something simple done like coming back from a system crash, he would be okay to use.  Otherwise, for the bigger jobs, I recommend he provide a written estimate with the items he plans to do.

UPDATE:  After posting this review, I received a number of text messages from Jim commenting on the bad review.  I understand he is upset, but harassing someone about a review is not a good way to go.  My review was honest and not meant to be mean, but to let those that use Angie's list get what they pay for...an honest review of someone's experience."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
Showing 1-10 of 28
Install Boiler FAQs, answered by experts

Boilers are equipped with multiple safety features to ensure safe operation. These include pressure relief valves to prevent overpressure, temperature high-limit switches to avoid overheating, and flame failure safety devices in gas boilers to cut off the gas supply if the flame goes out unexpectedly. Low water cutoffs prevent operation with insufficient water levels, and pressure gauges help monitor pressure levels. Ventilation and flue systems prevent the buildup of harmful gasses. Boilers often feature error code systems for automatic shutdown during malfunctions and gas leak detection for safety. Regular maintenance is crucial to ensure these safety features function correctly.

Installing a boiler requires training, a specific skill set, and extensive experience. Boiler installation can be extremely dangerous, as it involves working with water lines, gas lines, and electricity. For this reason, it’s strongly recommended that you hire a professional to install your boiler. Some states even consider it illegal to work on a boiler without the proper licensing.

Heat pumps are significantly more efficient than boilers, typically providing three to four times the amount of heat for the electricity they consume. While boilers run on fossil fuels, heat pumps use only electricity. This efficiency can lead to long-term savings on operating and maintenance costs. However, heat pumps have a higher upfront installation price compared to boilers. Despite their lower efficiency, boilers remain a popular choice for many homeowners, with 8 million in the United States alone, due to their lower initial cost and less intensive installation process. Ultimately, the best choice depends on your home's infrastructure, your budget, and your personal heating priorities.

In some cases, conversion kits are available, but not all boilers are compatible. Conversion may require significant modifications and should only be performed by a qualified professional. Before making a decision, compare conversion costs to the cost of a complete replacement to determine the most cost-effective and reliable option for your home.

All modern boilers are condensing boilers because they’re the most efficient type. Instead of extra heat leaving through the flue, these boilers trap the heat and use it to heat the house. Whether you choose a combi boiler, system boiler, or regular boiler, you can opt to get a condensing system. If you have an old boiler that’s not a condensing boiler, it’s a good idea to get an upgrade.

The Cortland, IL homeowners’ guide to boiler installation services

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