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Find Thermostat installers and replacers in Grayslake

Avatar for Full Efficiency Heating And Cooling
Full Efficiency Heating And Cooling
4.9(
27
)

Serving Grayslake, IL and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"I hired them to install new combined water heater/ boiler, install new water filtration system and service the ac units.Great service and knowledgeable of what theyâ re doing. Definitely will hire them again."
Remodel
Condensers
Installed furnaces
Response time10 hrs
4 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for G & R Heating and Air, LLC
G & R Heating and Air, LLC
4.7(
898
)

Serving Grayslake, 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%
172 neighbors recently requested a quote
Avatar for MYKHAILENKO INC. DBA MVFix
MYKHAILENKO INC. DBA MVFix
5.0(
41
)

Serving Grayslake, 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
43 neighbors recently requested a quote
Avatar for HvacByHayden LLC
HvacByHayden LLC
5.0(
8
)

Serving Grayslake, IL and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

HvacByHayden LLC is 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.

Response time10 mins
3 neighbors recently requested a quote
Recommended by37%of homeowners
Avatar for Graystone Comfort
Graystone Comfort
5.0(
19
)

Serving Grayslake, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Credit card accepted

"Very happy I chose them to install a humidifier on my furnace. Explained everything, answered all questions about humidifier as well as other possible needs. Great seeing a nice, professional and friendly team and having a women on the job!"
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 Legendary Service
Legendary Service
5.0(
24
)

Serving Grayslake, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Very responsive and offered options for financing. The Legendary Service Team has a thorough understanding of regulations and offers environmentally friendly suggestions for your HVAC needs. They did a furnace/AC replacement in my home. Their scehduling system texts you when they are in route to your home. The install went seamlessly. They kept all work areas covered and clean. I will use them for all future maintenance needs."
Reclaimed Mechanical Room
Reclaimed Mechanical Room
Response time2 days
5 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for HOT COLD AIR INC.
HOT COLD AIR INC.
5.0(
5
)

Serving Grayslake, 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 CJ Russell Mechanical
CJ Russell Mechanical
4.9(
82
)

Serving Grayslake, 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 John B Ventures LLC
John B Ventures LLC
4.9(
217
)

Serving Grayslake, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

"Knowledgeable and creative. Replaced a plasma wireless television. Wiring from the new wall mounted unit required developing a wiring plan and installation of that plan. Connection also involved seamless connection to wall speakers and DVD. allowance and alteration to universal remote to control system. Knowledgeable and friendly. Labor cost fair."
Power washing Fence
Power washing Fence
Power washing Fence
Boat Washing
Garage Floor

+34

Response time5 hrs
Response rate98%
12 neighbors recently requested a quote
The Pure Air Experts
4.7(
124
)

Serving Grayslake, 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
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FAQs for thermostat installation and replacement projects in Grayslake, 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 Grayslake, 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.