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Top-Rated Geothermal heating or cooling system installers in Oak Lawn - Updated Nov 2026

Avatar for Home Comfort Systems Inc
Home Comfort Systems Inc
4.9(
315
)
Geothermal Heating or Cooling System - Install

Serving Oak Lawn, IL and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"Home Comfort Systems was professional, honest and fairly priced. Steve Bilica (owner) came out to give me an estimate on a new furnace. He made me feel comfortable, which is important to me as a single woman. His estimate was the lowest of three I obtained ($4150) and he was so honest, he advised that my current unit didn’t need replacing yet. (The only reason I was getting estimates was because some other cut-throat company told me I needed a new one...for $11k!!...due to a cracked heat exchanger. However, all the other companies I contacted for estimates said I did NOT have a cracked heat exchanger.) I decided not to get a new furnace in the end. It’s been running great, although I did need a new blower motor about five months after the estimate, so Jeff D installed it for me ($385). Way cheaper than a whole new unit, so I’m happy. I’ll definitely go with this company again for repairs and when it’s time for a new furnace."
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Response time8 hrs
Response rate100%
8 neighbors recently requested a quote
Avatar for Shavitz Heating and Air Conditioning
Shavitz Heating and Air Conditioning
4.7(
417
)
Geothermal Heating or Cooling System - Install

Serving Oak Lawn, IL and surrounding areas

Approved

In business since 1904

Free estimates

Emergency services offered

"We decided to use Shavitz Heating & Air Conditioning as the company for the install of our new furnace. What impressed us about Shavitz was their employees. They made the entire process a positive experience. Everyone that interacted with us had a friendly and professional demeanor. It started with the sales visit by Will Gutierrez who was a pleasure to deal with. He provided us with several options while never pressuring us to lean one way or another. He was patient with us and answered all our questions. His courteous approach gave us a positive view of the company he represented. The installing technician, Linas, and the tech that was assisting him only continued this professional trend. They both were equally as courteous. Once the work was complete, Linas made sure he answered all of our questions and that we felt comfortable with the operation of our new furnace and humidifier before he left. His patience was very much appreciated. He also made sure the area were the work was done was clean and all trash removed. Will Gutierrez followed up with us a few days afterwards to make sure all was well, and that we were pleased with the work and our new purchase. Our answer was a definite, yes."
Response time10 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for AMERICAN FAMILY HEATING AND AIR CONDITIONING
AMERICAN FAMILY HEATING AND AIR CONDITIONING
4.9(
72
)
Geothermal Heating or Cooling System - Install

Serving Oak Lawn, IL and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"We were very happy with American Family. Their bid was competitive and the installation of our new air conditioner went very smoothly. They removed the existing system and were great about not destroying our landscape. We had them install the new system in a new location, away from the back patio. So far everything seems to be running fine and I would happily recommend them to anyone."
Response time20 mins
Response rate100%
11 neighbors recently requested a quote
Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
5.0(
15
)
Geothermal Heating or Cooling System - Install

Serving Oak Lawn, IL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

We are family owned and operated. We service all brands, makes and models. From furnace and water heater repair and replacements, all the way to a leaking kitchen faucet or bathroom toilet. One call REALLY does it all. Faucets, toilets, sinks, drain rodding, water heaters, boilers, furnaces, air conditioners and humidifiers. New construction to radiant heat. You know you called the pros the first time. Licensed, bonded and insured, we offer easy approval and affordable financing as well!

17 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,299
)
Geothermal Heating or Cooling System - Install

Serving Oak Lawn, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"We decided to replace an outdated AC unit and furnace with a brand new heat pump and furnace. After speaking with a Four Seasons sales rep, we knew they were the best choice to go with due to their thorough assessment, knowledge of products, availability of service and overall transparency. And perhaps most importantly, they were not pushy and respect our decisions on what system we felt was best for our home. As with any expenditure of this nature, there will be some ironing out of details and inevitable bumps to get everything completed, but the overall experience amounted to an energy-efficient HVAC system that was installed with care and expediency. Their service technicians are also friendly, thorough, knowledgeable, and available at a moment's notice. We are so glad that we went with Four Seasons."
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Response time9 hrs
44 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Premier Comfort Heating & Cooling LLC
Premier Comfort Heating & Cooling LLC
5.0(
1
)
Geothermal Heating or Cooling System - Install

Serving Oak Lawn, 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
Avatar for TDH Mechanical Heating & Cooling Contractors
TDH Mechanical Heating & Cooling Contractors
4.7(
366
)
Geothermal Heating or Cooling System - Install

Serving Oak Lawn, IL and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"TDH was very good at handling the removal and installation of a new HVAC unit in a crawl space. They were knowledgeable and only wanted to provide me what I needed and not try and sell me the most expensive. The installers work very had and were very clean. They've earned a customer for life."
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+18

Recommended by94%of homeowners
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