Top-rated thermostat installers and replacers.

Get matched with top thermostat installers and replacers in Lake Forest, IL

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Thermostat installers and replacers in Lake Forest

Avatar for G & R Heating and Air, LLC
G & R Heating and Air, LLC
4.7(
898
)

Serving Lake Forest, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Excellent service from start to finish. The technician handled our thermostat installation and central A/C repair quickly and professionally. Everything is working perfectly now and the whole process was explained clearly. Very reliable team and highly recommended."
New 16 seer A/C
Old A/C
Old furnace
New Furnace
Water heater Installation

+1

Response time2 hrs
Response rate91%
169 neighbors recently requested a quote
Avatar for Graystone Comfort
Graystone Comfort
5.0(
19
)

Serving Lake Forest, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Credit card accepted

"Nicole came out to see if my furnace could be fixed. She recommended a new install since fixing it would be feasible for a furnace that old. I asked how many BTU's and she sent me an analysis she did. She came for the install on time and it took as long as she estimated it would. She is very knowledgeable and is ok with answering questions for a novice. The price was competitive. Highly recommend."
HVAC System Install
HVAC System Install
HVAC System Install
HVAC System Install
Humidifier Install

+2

Response time8 hrs
Response rate95%
2 neighbors recently requested a quote
Avatar for MYKHAILENKO INC. DBA MVFix
MYKHAILENKO INC. DBA MVFix
5.0(
41
)

Serving Lake Forest, IL and surrounding areas

Approved

In business since 2022

Emergency services offered

Warranties offered

"I spoke with Val on the phone, my refrigerator was leaking water. He said he would be able come by between 12-3pm. When he was on his way, he texted me with his ETA. Arrived promptly, and diagnosed the problem quickly. Replaced the connector on the water line, tested it, working properly, all set! I was very grateful that he was able to come out so quickly and fixed the problem. Very nice serviceman. I highly recommend him!"
Dryer maintenance
Dryer maintenance
Dryer maintenance
56 neighbors recently requested a quote
Avatar for CJ Russell Mechanical
CJ Russell Mechanical
4.9(
82
)

Serving Lake Forest, IL and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"CJ Russell was the first company to call me reference this work. He seemed honest and scheduled time to look at what needed to be done. James came out. i showed him the steel door I wanted replaced with another steel door. i showed him the paint color i wanted. James made necesary calls to find the door. He painted the door then installed it one day later. The color looks great and so does the door! James also replaced hardware on a closet door and adjusted another door so it smoothly slides now. James did a great job and cleaned up after all work was completed. His pricing was reasonable and his work is of good quality. i would hire him again. l"
All Crystals installed
Finished Chandelier
Last string of crystals
Working on the last row of Crystals
Working on row number 8 of crystal strings

+34

Response time1 day
Response rate92%
3 neighbors recently requested a quote
Avatar for HOT COLD AIR INC.
HOT COLD AIR INC.
5.0(
5
)

Serving Lake Forest, IL and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"I recently had Hot Cold Air Company repair my furnace, and I am thoroughly impressed. Their technician arrived promptly, diagnosed the issue quickly, and explained everything clearly. The repair was done efficiently, and my furnace is now working perfectly. I highly recommend Hot Cold Air Company for their exceptional service and professionalism."
2 New Carrier A/C Units Installation
Our Branded Vehicles
A/C Replacement
Our Branded Vehicles
Air Conditioner Replacement

+17

Response time2 hrs
Response rate88%
6 neighbors recently requested a quote
Avatar for Aire Serv of Lake Forest-Gurnee
Aire Serv of Lake Forest-Gurnee
5.0(
7
)

Serving Lake Forest, IL and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"The team at Aire Serv of Lake Forest-Gurnee is absolutely amazing. They came in after a couple of other companies and found the real issue with my furnace and worked really hard to get it replaced as quickly as possible! I could not recommend them enough! The whole team from the dispatcher to the technicians that did the install are the best!!!"
Service & Repair
Service & Repair
Service & Repair
5 neighbors recently requested a quote
The Pure Air Experts
4.7(
124
)

Serving Lake Forest, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Credit card accepted

Customers say: True professional

"Replaced the original AC Unit(at least 25yr old), added a new humidifier to furnace and a new smart thermostat. The original guy who did repair work, Phil, was knowledgeable but at the end of the day wanted to sell anything he can. He had convinced me I was able to get rebates through ComEd for upgrading AC unit and adding the smart thermostat. At this time, I have been unable to get any rebates because he failed to mention I need to also have a furnace that qualifies and there was no receipts on the thermostat to claim that rebate. The day of the install, the guys that were here, did great work. They installed everything and added a damper to furnace(which does not work that great). When the guy installed the thermostat, he installed the wrong one and i had to show him the work order for the correct one. He left and it took a week for him to return to install the correct one. He also left with all the boxes."
Response time5 hrs
Response rate96%
Recommended by92%of homeowners
...
Showing 1-10 of 1525
FAQs for thermostat installation and replacement projects in Lake Forest, IL

Smart thermostats may be worth it for many homeowners. They come with various features, including voice control and smartphone apps. Vacation mode can help lower energy usage when you’re out of town for an extended period. Alert warnings let you know about major spikes or drops in temperature. Smartphone apps can track energy usage, and smart thermostats can learn your routine over time to adjust your temperature and reduce wasted energy consumption automatically.

You typically do not need more than one smart thermostat. While it’s common to see multiple mechanical thermostats throughout a large home, multiple smart thermostats may try to override each other. This can lead to problems with the HVAC system. Ensure the unit you buy has the option for dual- or multi-zoned systems to avoid compatibility issues.

Installing a programmable or smart thermostat may save you $180 per year in utility costs. A big part of this comes from a smart thermostat’s ability to learn and adapt to your regular routines. With smartphone apps or web-based interfaces, you also have the option to control your thermostat when you’re not home.

The Lake Forest, IL homeowners’ guide to thermostat installations and replacements

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