Top-rated thermostat installers and replacers.

Get matched with top thermostat installers and replacers in your area

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.

Thermostat installers and replacers in Stone Mountain

Unlimited Heating and Air Conditioning, LLC
421 Mary Todd Place
4.94(
9
)
Approved Pro
Unlimited Heating and Air Conditioning, LLC
421 Mary Todd Place
4.94(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 years of experience

Unlimited Heating and Air Conditioning, LLC, is an HVAC company providing residential heating, air service & repairs throughout the surrounding areas. We specialize in heating and air conditioning repairs, service,and installations as well. When it comes to your family, your air conditioning and heating systems should provide you with value as well as comfort. With Unlimited Heating and Air Conditioning, LLC, you can expect comfort, value, and dedicated customer service to meet your needs.

"Unlimited Heating and Air Conditioning was great in every way."

Bobby M on August 2018

Unlimited Heating and Air Conditioning, LLC, is an HVAC company providing residential heating, air service & repairs throughout the surrounding areas. We specialize in heating and air conditioning repairs, service,and installations as well. When it comes to your family, your air conditioning and heating systems should provide you with value as well as comfort. With Unlimited Heating and Air Conditioning, LLC, you can expect comfort, value, and dedicated customer service to meet your needs.

"Unlimited Heating and Air Conditioning was great in every way."

Bobby M on August 2018


Avatar for Tropical Heating & Air Solutions LLC
Tropical Heating & Air Solutions LLC
210 Shiver Blvd
5.00(
10
)
Approved Pro
Tropical Heating & Air Solutions LLC
210 Shiver Blvd
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
10 years of experience

with over 6 yrs. of experience in working with HVAC/R company's. I am excellent with customer service and getting to the problem.

"Super professional and very experienced and went over and above the project to assist my situation."

Nick D on October 2021

with over 6 yrs. of experience in working with HVAC/R company's. I am excellent with customer service and getting to the problem.

"Super professional and very experienced and went over and above the project to assist my situation."

Nick D on October 2021


Grace Maintenance Service MEP LLC
3289 Powder Springs Road
New on HomeAdvisorNew on Angi
Approved Pro
Grace Maintenance Service MEP LLC
3289 Powder Springs Road
New on AngiNew on HomeAdvisor
Approved Pro
14 years of experience
Free onsite estimate

GRACE MAINTENANCE SERVICES 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.

GRACE MAINTENANCE SERVICES 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.


Avatar for Hill HVAC, LLC
Hill HVAC, LLC
2374 Greenway Dr.
4.96(
53
)
Approved Pro
Hill HVAC, LLC
2374 Greenway Dr.
4.96(
53
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
7 years of experience

Hill HVAC is an owner operated repair and maintenance service. I am intent on getting your system fixed and earning your business. No nonsense or up selling. 15 yrs experience commercial and residential installation and troubleshooting. Call me directly 7702415023 anytime for estimates or advice.

"He fix the wiring and was helpful."

L F on December 2023

Hill HVAC is an owner operated repair and maintenance service. I am intent on getting your system fixed and earning your business. No nonsense or up selling. 15 yrs experience commercial and residential installation and troubleshooting. Call me directly 7702415023 anytime for estimates or advice.

"He fix the wiring and was helpful."

L F on December 2023


Avatar for United Air Temp, Air Conditioning and Heating
United Air Temp, Air Conditioning and Heating
1240 Johnson Ferry Pl Building - C Suite #220,
New on HomeAdvisorNew on Angi
Approved Pro
United Air Temp, Air Conditioning and Heating
1240 Johnson Ferry Pl Building - C Suite #220,
New on AngiNew on HomeAdvisor
Approved Pro
33 local quotes requested
33 years of experience

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.

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.


Avatar for Ace & A Heating & Air Conditioning of DeKalb
Ace & A Heating & Air Conditioning of DeKalb
2768 E College Ave
4.71(
87
)
Approved Pro
Ace & A Heating & Air Conditioning of DeKalb
2768 E College Ave
4.71(
87
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
412 local quotes requested

Ace & A is a family owned & operated full service heating and air conditioning company with top expertise in sales, service and installation that has been serving the greater Atlanta area since 1975. Ace & A offers "true" 24 hour emergency service where you can reach a customer service representative anytime day or night. Ace & A offers free estimates on HVAC replacement equipment and also specializes in high efficiency replacements and upgrades. Ace & A ensures that all service technicians undergo extensive factory training each year giving them the utmost qualification to properly diagnose problems, repair units, and perform new equipment installations. Due to our extensive training and satisfied customers through the years we have been able to maintain an accredited A+ rating with the Better Business Bureau (BBB). Our company strives to achieve zero complaints, but being in the service industry, we occasionally face this obstacle at some point or another. When we receive a complaint, the Ace & A team will do everything possible to make the situation right and the customer happy. Most importantly our goal is striving to provide the very best customer service in order to gain confidence and trust in Ace & A one customer at a time. Award winning. Additional contact name - Richard Coggins. Additional DBA - Ace & A Heating & Air Cond.

"Been using Ace and A Decatur for my commercial and residential HVAC needs for years . Always professional and knowledgeable. Tim always helps me with any new equipment I need and has done this for years . Highly recommend."

Mike K on April 2025

Ace & A is a family owned & operated full service heating and air conditioning company with top expertise in sales, service and installation that has been serving the greater Atlanta area since 1975. Ace & A offers "true" 24 hour emergency service where you can reach a customer service representative anytime day or night. Ace & A offers free estimates on HVAC replacement equipment and also specializes in high efficiency replacements and upgrades. Ace & A ensures that all service technicians undergo extensive factory training each year giving them the utmost qualification to properly diagnose problems, repair units, and perform new equipment installations. Due to our extensive training and satisfied customers through the years we have been able to maintain an accredited A+ rating with the Better Business Bureau (BBB). Our company strives to achieve zero complaints, but being in the service industry, we occasionally face this obstacle at some point or another. When we receive a complaint, the Ace & A team will do everything possible to make the situation right and the customer happy. Most importantly our goal is striving to provide the very best customer service in order to gain confidence and trust in Ace & A one customer at a time. Award winning. Additional contact name - Richard Coggins. Additional DBA - Ace & A Heating & Air Cond.

"Been using Ace and A Decatur for my commercial and residential HVAC needs for years . Always professional and knowledgeable. Tim always helps me with any new equipment I need and has done this for years . Highly recommend."

Mike K on April 2025


Avatar for Trend Mechanical LLC
Trend Mechanical LLC
653 Arbor Rdg
4.90(
10
)
Approved Pro
Trend Mechanical LLC
653 Arbor Rdg
4.90(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
516 local quotes requested

Trend mechanical LLC heating &A/C has provided owners in the Walton & Gwinnett area with high quality, professionals repair for years. We are licensed, insured ventilation, heating and air conditioning contractor with years of experience working with all types, brands and models heating and air conditioners.we can handle the installation, repairs, service and maintenance work for any HVAC system.

"Trend Mechanical did an amazing job. They were very transparent, and communication throughout the whole process was great. They were affordable and timely compared to the competition. I highly recommend them."

J H on August 2024

Trend mechanical LLC heating &A/C has provided owners in the Walton & Gwinnett area with high quality, professionals repair for years. We are licensed, insured ventilation, heating and air conditioning contractor with years of experience working with all types, brands and models heating and air conditioners.we can handle the installation, repairs, service and maintenance work for any HVAC system.

"Trend Mechanical did an amazing job. They were very transparent, and communication throughout the whole process was great. They were affordable and timely compared to the competition. I highly recommend them."

J H on August 2024


LEONARD HEATING & AIR COND
1483 HIGH MEADOW DR
5.00(
4
)
Approved Pro
LEONARD HEATING & AIR COND
1483 HIGH MEADOW DR
5.00(
4
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
482 local quotes requested

We at Leonard, We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. We have over 30 years of sexperience. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. In order to understand the needs, and expectations of our customers, we take great care to work, and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Jobs were completed with professionalism . Have had no problems with the work or products."

Jeff D on December 2024

We at Leonard, We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. We have over 30 years of sexperience. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. In order to understand the needs, and expectations of our customers, we take great care to work, and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Jobs were completed with professionalism . Have had no problems with the work or products."

Jeff D on December 2024


Avatar for Benle Heating and Air
Benle Heating and Air
Based Out Of
5.00(
10
)
Approved Pro
Benle Heating and Air
Based Out Of
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
506 local quotes requested

At BenLe Heating & Air, we appreciate the importance of cost-effectiveness, providing tailored installation and repair solutions.

"Perfectly. Ben is an expert at what he does. And he is a real professional. She answered all of my questions upfront. He showed up on time. He was very clear and detailed in his explanation of what his team would do and how the process would work. And most importantly, he delivered an excellent product and service on time. I probably will never use another vendor for the rest of my life."

Calvin T on December 2024

At BenLe Heating & Air, we appreciate the importance of cost-effectiveness, providing tailored installation and repair solutions.

"Perfectly. Ben is an expert at what he does. And he is a real professional. She answered all of my questions upfront. He showed up on time. He was very clear and detailed in his explanation of what his team would do and how the process would work. And most importantly, he delivered an excellent product and service on time. I probably will never use another vendor for the rest of my life."

Calvin T on December 2024


Avatar for Triad Mechanical Company Inc
Triad Mechanical Company Inc
393 Swanson Dr
4.84(
185
)
Approved Pro
Triad Mechanical Company Inc
393 Swanson Dr
4.84(
185
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
886 local quotes requested

While many heating and air companies have come and gone, we have maintained an impeccable reputation since 1991, which we have accomplished through hard work and unparalleled customer service. We pride ourselves on punctuality, courtesy to our customers and their families, and a rock solid guarantee on all the work we perform. This family-owned and -operated HVAC service has responded promptly to calls in the Greater Metro Atlanta area for more than 20 years, offering the best value from certified technicians. While many heating and air companies have come and gone, we have maintained an impeccable reputation, which we have accomplished through hard work and unparalleled customer service. We pride ourselves on punctuality, courtesy to our customers and their families, and a rock solid guarantee on all the work we perform. Additional Counties Served: Oglethorpe, Walton, Gwinnett, Rockdale, & Portions of Dekalb, & Fulton. Additional phone - (770) 400-9084.

"No findings, no solution, no explanation… collected the fee… the issue is still there. I had Triad Mechanical Company for our HVAC issue that the outdoor unit is not running. I told Paul, the assigned technician, that we had tried resetting the power to the outdoor unit but that only brought the unit back on running for a few days before it stopped running again. I asked Paul’s help diagnose the issue for the root cause. However, when I came to the property just a few minutes later than Paul, he told me that he had done his work already, well, by simply resetting the power to the unit! (although I told him that we already tried that but it didn’t work!)… He didn’t have the patience to explain to me what diagnosis he had done (within that a few minutes) and he didn’t even bother to come off his truck to show me but saying “go ask your tenant”. He collected the fee and left. I will never trust nor use Triad Mechanical Company again!"

Zhentao H on April 2024

While many heating and air companies have come and gone, we have maintained an impeccable reputation since 1991, which we have accomplished through hard work and unparalleled customer service. We pride ourselves on punctuality, courtesy to our customers and their families, and a rock solid guarantee on all the work we perform. This family-owned and -operated HVAC service has responded promptly to calls in the Greater Metro Atlanta area for more than 20 years, offering the best value from certified technicians. While many heating and air companies have come and gone, we have maintained an impeccable reputation, which we have accomplished through hard work and unparalleled customer service. We pride ourselves on punctuality, courtesy to our customers and their families, and a rock solid guarantee on all the work we perform. Additional Counties Served: Oglethorpe, Walton, Gwinnett, Rockdale, & Portions of Dekalb, & Fulton. Additional phone - (770) 400-9084.

"No findings, no solution, no explanation… collected the fee… the issue is still there. I had Triad Mechanical Company for our HVAC issue that the outdoor unit is not running. I told Paul, the assigned technician, that we had tried resetting the power to the outdoor unit but that only brought the unit back on running for a few days before it stopped running again. I asked Paul’s help diagnose the issue for the root cause. However, when I came to the property just a few minutes later than Paul, he told me that he had done his work already, well, by simply resetting the power to the unit! (although I told him that we already tried that but it didn’t work!)… He didn’t have the patience to explain to me what diagnosis he had done (within that a few minutes) and he didn’t even bother to come off his truck to show me but saying “go ask your tenant”. He collected the fee and left. I will never trust nor use Triad Mechanical Company again!"

Zhentao H on April 2024

...
Showing 1-10 of 961

Thermostat installations and replacements FAQs

It's often worth replacing your old thermostat with a newer model that can enhance your home's comfort and energy efficiency. Upgrading to a programmable or smart thermostat can save you up to $200 per year on energy bills. Plus, smart thermostats offer convenient features like remote control and learning capabilities, making your home more comfortable and easier to manage.

Signs of a bad thermostat include your HVAC system not turning on when it's supposed to or failing to reach the desired temperature. If the thermostat's display is blank or not functioning properly, it could be malfunctioning. Another indicator is the HVAC system running continuously without shutting off or cycling on and off too frequently. You might also notice uneven temperatures throughout your home, with some rooms being too warm or too cold. These issues suggest that the thermostat is failing and may need repair or replacement to ensure your HVAC system operates efficiently.

A thermostat should last between 10 to 20 years, depending on its quality and how well it's maintained. Over time, dust, wiring issues, and general wear can affect its performance. Even if a thermostat is still functioning after 10 years, you might choose to replace it to take advantage of newer energy-saving technologies and smart home integrations. Upgrading to a modern thermostat can improve efficiency, offer more control over your home's climate, and potentially lower energy bills.

The number of thermostats you need depends on your home's size, layout, and heating and cooling zones. In a standard single-zone HVAC system, one thermostat controls the temperature for the entire home. However, larger homes or those with multiple floors might benefit from multiple thermostats linked to a multi-zone HVAC system. This setup can offer better comfort and energy efficiency: It lets you customize the temperature in different areas, so you're only heating or cooling the spaces you're using.

Replacing a thermostat typically takes a professional technician about one to two hours to complete. If you're swapping out an existing thermostat for a similar model with compatible wiring, the process can be done in less than an hour. However, installing a new thermostat that requires additional wiring, such as a smart thermostat, or moving the thermostat to a new location can extend the time to two hours or more. Complex installations may also involve cutting into drywall or integrating with other home systems, which can add to the duration.

There are a few things that can cause your home thermostat to fail. The most simple one is age and cleanliness. Dirt, grease, dust, and other small particles can clog sensors and cause malfunctions in readings. You may also have a failing power supply and loose connections, and the simplest cause is that it isn't installed in the right place in your home so it can't properly sense air temperature. Repairing a thermostat costs around $210.

The homeowners guide to thermostat installations and replacements
From average costs to expert advice, get all the answers you need to get your job done.
technician repairing solar panel on roof
Apr 30, 2025
Apr 30, 2025
Budget for solar panel repair costs based on factors such as system type, panel size, accessibility, repair type, labor, parts, inspections, and more.
new solar panels installed on roof of home
Apr 30, 2025
Apr 30, 2025
Budget for solar panel installation costs based on factors such as system size, panel type, electrical requirements, location, rebates, maintenance, and more.
dryer vent on the exterior of a home
Apr 25, 2025
Apr 25, 2025
Budget for dryer vent installation costs based on factors such as location, materials, vent type, hose length, labor, potential repairs, and more.
heat pumps installed on the side of a brick house
Apr 24, 2025
Apr 24, 2025
Budget for heat pump costs based on factors such as labor, pump capacity, efficiency rating, location, pump type, tax incentives, and more.
Aerial view of a Solar photovoltaic panels on a wood house roof surrounded by green vegetation
Nov 18, 2022
Nov 18, 2022
HomeAdvisor’s Solar Panel Cost Guide explores the cost of solar panels in California. Use our guide to find out how much solar panels cost in your city.
heat pump being repaired on the side of house
Apr 19, 2025
Apr 19, 2025
Use this guide to budget for heat pump repair costs based on factors such as problem type, part, heat pump type, professional labor, and more.
Share project details to get started.