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Top-Rated Geothermal heating or cooling system installers in Island Lake - Updated Nov 2026

Avatar for G & R Heating & Air
G & R Heating & Air
4.6(
139
)
Geothermal Heating or Cooling System - Install

Serving Island Lake, IL and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"I had a great experience with G & R Heating & Air. Scheduling was easy, pricing was fair, and the service exceeded my expectations. The team was friendly, respectful of my home, and did excellent work. My system is running better than ever. I will definitely be using them again and recommending them to friends and family."
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+20

Response time11 hrs
Response rate100%
144 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 Island Lake, 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."
18 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Phoenix HVAC, LLC
Phoenix HVAC, LLC
4.8(
64
)
Geothermal Heating or Cooling System - Install

Serving Island Lake, IL and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"These guys are great! We have an yearly maintenance contract with them for our AC and hot water boiler. They are professional and do great work! They are also very responsive as issues arise. Our older hot water radiator system went down on a Saturday night. I called Maggie and and Bob (one of the owners) was out Sunday morning and repaired our unit. They also installed a new hot water heater recently. Highly recommended!"
Staging and Wrapping Ductwork
Staging and Wrapping Duct Work
Installation
OUR WORK
OUR WORK

+21

Response time9 hrs
Response rate92%
3 neighbors recently requested a quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,298
)
Geothermal Heating or Cooling System - Install

Serving Island Lake, 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
High Caliber Electric LLC
5.0(
24
)
Geothermal Heating or Cooling System - Install

Serving Island Lake, 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!

38 neighbors recently requested a quote
Recommended by52%of homeowners
Avatar for Premier Comfort Heating & Cooling LLC
Premier Comfort Heating & Cooling LLC
5.0(
1
)
Geothermal Heating or Cooling System - Install

Serving Island Lake, 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 STVU Inc
STVU Inc
5.0(
49
)
Geothermal Heating or Cooling System - Install

Serving Island Lake, IL and surrounding areas

In business since 2016

Free estimates

Emergency services offered

"Igor and his crew did an excellent job installing the furnace and AC! Work was done neatly and on time. He followed up 1 week and 1 month after installation to confirm everything was working well. When our tenants raised some cooling concerns (tenant user error) after about 6 months, he completed the inspection within 24 hours and at no charge. Great experience overall."
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+39

Response time4 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for Air Solutions Heating Air-Conditioning Duct Cleaning
Air Solutions Heating Air-Conditioning Duct Cleaning
4.9(
67
)
Geothermal Heating or Cooling System - Install

Serving Island Lake, IL and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Please Read my entire review: I had another contractor (ABC) come out to my home and told me I needed a blower motor assembly and the cost would be $1500, and was told I should also look into purchasing a new entire unit. after checking this site and seeing that the most I should pay is around $800 and confirming that the part was under $300 I decided to contact another company AIR SOLUTIONS MECHANICAL SERVICES,INC and upon arrival it took Robert approximately 12 minutes to determine that the blower motor assembly was just fine and had no problems at all and had it up and working immediately. He also determined that I had a bad capacitor which is a part I have replaced a handful of times. I really want to thank Robert and thank this company as it truly is an honest and trustworthy company that not only will I recommend to all my friends but to the Angie list community to use for all your air conditioning and heating needs as I will most definitely will be calling them for all of mine. On a side note this happened on the hottest day and week of the year and I was out of town at the time ABC Plumbing Heating Cooling & Electric 220 West Campus Drive Suite 200 Arlington Heights, IL 60004 came out to my home telling me that I needed to spend $1500 and look into purchasing a new unit which would of been as you all know at least $3000. I wanted to make sure the Angie list community was aware of this deceptive company and their deceptive practices. I also contacted them and received a response that they wouldn't pay the $225 I paid to fix the unit but again were willing to make me spend $1500 - $3000 on a repair that was 100% not necessary and not needed. They took full advantage of the weather and me being out of town to be very deceptive. I have ALL the paper work to confirm everything."
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Recommended by98%of homeowners
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