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Top-Rated Thermostat installers and replacers in Atlanta - Updated Nov 2026

Cornelio's remodeling company llc
5.0(
26
)
Thermostat - Install or Replace

Serving Atlanta, GA and surrounding areas

Approved

Emergency services offered

Customers say: True professional

"On Thursday, 6/13/2024, I used Cornelio's to repair the drywall in my garage and dining area and paint, which the water heater leak had damaged. I must say that he and his team did an excellent job. They arrived on time, and his response was swift. He answered any questions that I had professionally and courteously. I was so impressed that I will use this company for future projects starting next week. I am glad I found this guy because finding someone who lives up to a 5-star rating is challenging. I woke up on Friday, 6/14/2024, this morning so happy because today I am having my water heater installed, which means I will have hot water again."
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+16

Response time12 hrs
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for 4 Seasons Heating & Air
4 Seasons Heating & Air
4.2(
110
)
Thermostat - Install or Replace

Serving Atlanta, GA and surrounding areas

Approved (Corporate)

In business since 2007

Free estimates

Credit card accepted

"I got some good information from the technician that came out to the house. He gave me several options regarding repairing my AC unit as well as explained some issues with the previous installation that was causing my current problems."
Trane
Trane
Trane
Trane
Transition

+25

Response time1 day
Recommended by98%of homeowners
Avatar for JAMES ALTMAN HANDYMAN
JAMES ALTMAN HANDYMAN
4.7(
153
)
Thermostat - Install or Replace

Serving Atlanta, GA and surrounding areas

Approved

In business since 2005

Credit card accepted

Customers say: Super punctual

"It was fair. He was punctual. Had to find the screen door myself but wasn't too bad. Install was fine; he had to touch up a few things afterwards. Door still need some patch up work after install like putting weather strips in to fill a little opening and paint an area."
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+12

Response time1 day
Recommended by95%of homeowners
Avatar for Mr. Handyman of Sandy Springs, Dunwoody and N Atlanta
Mr. Handyman of Sandy Springs, Dunwoody and N Atlanta
4.9(
18
)
Thermostat - Install or Replace

Serving Atlanta, GA and surrounding areas

Approved

In business since 2019

Warranties offered

Credit card accepted

"We had an excellent experience with Mr. Handyman of Sandy Springs, and Nate was absolutely outstanding. He handled a variety of projects throughout the house, including replacing and adjusting the magnets on our kitchen cabinets, repairing a damaged cover on the trash cabinet, installing security cameras around the house, cleaning and repainting the bathroom, and replacing the attic door cover. Nate was professional, patient, meticulous, and incredibly respectful of our home. What impressed me most was how careful he was with every detail. He left every workspace immaculate — genuinely spotless — and still apologized in case there was a tiny bit of chipped paint or dust he might have missed. There wasn’t. It’s rare to find someone who takes that much pride in their work and treats your home as carefully as if it were their own. Nate was amazing from start to finish, and I would absolutely request him again. Highly recommend Mr. Handyman, and especially Nate. Five stars without hesitat"
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+228

Recommended by76%of homeowners
Avatar for United Air Temp, Air Conditioning and Heating
United Air Temp, Air Conditioning and Heating
New to Angi
Thermostat - Install or Replace

Serving Atlanta, GA and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

United Air Temp 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.\n

Avatar for Casteel Heating, Cooling, Plumbing & Electrical
Casteel Heating, Cooling, Plumbing & Electrical
4.7(
950
)
Thermostat - Install or Replace

Serving Atlanta, GA and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"Impressed with the entire Casteel group. From the service tech who identified the 23-year old furnace issue, to the sales rep and finally to the installation crew. Easily met expectations. Arrived on time, discussed install process and finished the job on time. All were extremely nice, professional and knowledgeable. Patiently took the time to review thermostat operation and made sure all my questions were answered before leaving. The took great care to ensure no damage was done to floors, carpet and stairs. Impressive crew and would definitely recommend."
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+30

Recommended by93%of homeowners
Avatar for Hill HVAC, LLC
Hill HVAC, LLC
5.0(
53
)
Thermostat - Install or Replace

Serving Atlanta, GA and surrounding areas

In business since 2018

Emergency services offered

Small jobs welcome

"Fantastic customer service. My installation was a bit abnormal, and I received thoughtful explanations and quality work. Would recommend to anyone needing any kind of HVAC work!"
Before
After
NEW LENNOX CONDENSER
NO FILTER FOR NO TELLING HOW LONG
NO FILTER FOR NO TELLING HOW LONG

+13

Response time3 hrs
Recommended by98%of homeowners
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FAQs for thermostat installation and replacement projects in Atlanta, GA

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 Atlanta, GA homeowners’ guide to thermostat installations and replacements

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