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Thermostat installers and replacers in Cumming

Grace Maintenance Service MEP LLC

3289 Powder Springs Road
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Grace Maintenance Service MEP LLC

3289 Powder Springs Road
New on HomeAdvisorNew 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 Happy Handyman, LLC.

Happy Handyman, LLC.

4.89(
65
)
Approved Pro

Happy Handyman, LLC.

4.89(
65
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
229 local quotes requested

I have been in the construction industry for over 25 years. As a homeowner needing to get things done that I do not have time to do, I tried to hire people to do the work for me. If I contacted companies, they did not answer the phone and if you left a message they did not call back. If they did call back or they would schedule appointments and never show up or if they did show up you would never hear from them again. If I was lucky to find one that provided an estimate, they did not know how to do the projects requested. Larger companies do not want to do the "little" things. At the point of getting so frustrated, I decided to start this business so that other homeowners would not have to go through this. I have hired professional and qualified people; drug test and background checks have been performed on them to ensure clients safety. The technician comes out, accesses the work and pricing is given on site. If pricing is accepted, the technician will perform the work immediately. You do not pay for the work until the job has been completed to your satisfaction.

"Lots of different kinds of outdoor work."

Jayne C on August 2025

I have been in the construction industry for over 25 years. As a homeowner needing to get things done that I do not have time to do, I tried to hire people to do the work for me. If I contacted companies, they did not answer the phone and if you left a message they did not call back. If they did call back or they would schedule appointments and never show up or if they did show up you would never hear from them again. If I was lucky to find one that provided an estimate, they did not know how to do the projects requested. Larger companies do not want to do the "little" things. At the point of getting so frustrated, I decided to start this business so that other homeowners would not have to go through this. I have hired professional and qualified people; drug test and background checks have been performed on them to ensure clients safety. The technician comes out, accesses the work and pricing is given on site. If pricing is accepted, the technician will perform the work immediately. You do not pay for the work until the job has been completed to your satisfaction.

"Lots of different kinds of outdoor work."

Jayne C on August 2025


Avatar for Casteel Heating, Cooling, Plumbing & Electrical

Casteel Heating, Cooling, Plumbing & Electrical

778 PETTY RD
4.74(
88
)
Approved Pro

Casteel Heating, Cooling, Plumbing & Electrical

778 PETTY RD
4.74(
88
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
1704 local quotes requested

At Casteel Heating, Cooling, Plumbing and Electrical, we provide world-class service to our customers, just as we have since 1987. Founded by Jan and Bob Casteel, our company was built on honesty and customer-focused care. To this day, we offer our Amazing Care Guarantee: We’ll take amazing care of you or we’ll refund your service call fee. Our expert team of plumbers, electricians, HVAC technicians, and system design managers performs top-quality repairs and installations while ensuring you are completely satisfied with your entire customer service. Because we offer so many services under one roof, you’ll save time and money by making one phone call to Casteel. Formerly: Knight Air Conditioning and Heating Company

"The heating was fixed but I am very unhappy about the pricing and lack of transparency. The service technician tried to upsell me a $200 safety valve that I “absolutely needed” (but online said should be able to be installed for less than $50 and was just another added feature to shut off the AC if the drain was clogged). The technician said he would not charge me for the repair on my dampener but I got a $40 charge anyways after refusing to pay for the safety valve, which I said I would buy myself. When I had spoken with Casteel on the phone the night before, they said the $40 charge would be for a second HVAC unit, which ultimately did not get serviced. I never received a detailed explanation of these charges and instead said this was a “miscellaneous fee” for repairs. They got the job done but I do not think I would hire again solely because I felt like I was being taken advantage of for most of the visit. I could not get the $40 charge removed after calling Casteel and explaining the situation. So it was a $129 service call with no parts replaced more expensive than other providers."

Shihua L on March 2019

At Casteel Heating, Cooling, Plumbing and Electrical, we provide world-class service to our customers, just as we have since 1987. Founded by Jan and Bob Casteel, our company was built on honesty and customer-focused care. To this day, we offer our Amazing Care Guarantee: We’ll take amazing care of you or we’ll refund your service call fee. Our expert team of plumbers, electricians, HVAC technicians, and system design managers performs top-quality repairs and installations while ensuring you are completely satisfied with your entire customer service. Because we offer so many services under one roof, you’ll save time and money by making one phone call to Casteel. Formerly: Knight Air Conditioning and Heating Company

"The heating was fixed but I am very unhappy about the pricing and lack of transparency. The service technician tried to upsell me a $200 safety valve that I “absolutely needed” (but online said should be able to be installed for less than $50 and was just another added feature to shut off the AC if the drain was clogged). The technician said he would not charge me for the repair on my dampener but I got a $40 charge anyways after refusing to pay for the safety valve, which I said I would buy myself. When I had spoken with Casteel on the phone the night before, they said the $40 charge would be for a second HVAC unit, which ultimately did not get serviced. I never received a detailed explanation of these charges and instead said this was a “miscellaneous fee” for repairs. They got the job done but I do not think I would hire again solely because I felt like I was being taken advantage of for most of the visit. I could not get the $40 charge removed after calling Casteel and explaining the situation. So it was a $129 service call with no parts replaced more expensive than other providers."

Shihua L on March 2019


Avatar for Gainesville Economy Heating & Air

Gainesville Economy Heating & Air

8652 Crane Mill Rd
5.00(
10
)
Approved Pro

Gainesville Economy Heating & Air

8652 Crane Mill Rd
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
606 local quotes requested

We are in the HVAC field for more than 35 years and our name has become a synonym for quality and professional heating and air conditioning works. Additional Service Areas: Gwinnett, Hall, Henry, Paulding, Rockdale, Habersham, Lumpkin, White & Portions of Banks County. Ask for details. Call 7067782861 for service in Cleveland, Clarksville, and Cornelia.

"The guys from Economy Heating and Air helped us with a emergency situation with our old furnace, including a replacement of the unit with a new heat pump. They were the only company I called that could come out immediately to look at the problem. Overall, I felt very comfortable with their HVAC knowledge. They answered all of my questions and left the jobsite clean after their work. I highly recommend."

Steve N on January 2025

We are in the HVAC field for more than 35 years and our name has become a synonym for quality and professional heating and air conditioning works. Additional Service Areas: Gwinnett, Hall, Henry, Paulding, Rockdale, Habersham, Lumpkin, White & Portions of Banks County. Ask for details. Call 7067782861 for service in Cleveland, Clarksville, and Cornelia.

"The guys from Economy Heating and Air helped us with a emergency situation with our old furnace, including a replacement of the unit with a new heat pump. They were the only company I called that could come out immediately to look at the problem. Overall, I felt very comfortable with their HVAC knowledge. They answered all of my questions and left the jobsite clean after their work. I highly recommend."

Steve N on January 2025


Lanier Home Services

5.00(
26
)
Approved Pro

Lanier Home Services

5.00(
26
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
454 local quotes requested

Simple, your problems, ..solved. We will make it happen. We focus our attention on your problems so you don’t have to. Top priorities are convenience, quality and longevity. Veteran owned, family run business. We can help you customize your home inside and out to fit your lifestyle and decor. You want new lighting or ceiling fans, bathroom and kitchen fixtures? We can help. We also specialize in water and termite damage restoration. We are always happy to help with most all of your projects. Call us for anything between the roof and the floor. Call us anytime 8am - 8pm Monday- Saturday @678-780-0215.

"The service was excellent! They provided options I would not have thought of. Very professional!!"

Sonya D on April 2025

Simple, your problems, ..solved. We will make it happen. We focus our attention on your problems so you don’t have to. Top priorities are convenience, quality and longevity. Veteran owned, family run business. We can help you customize your home inside and out to fit your lifestyle and decor. You want new lighting or ceiling fans, bathroom and kitchen fixtures? We can help. We also specialize in water and termite damage restoration. We are always happy to help with most all of your projects. Call us for anything between the roof and the floor. Call us anytime 8am - 8pm Monday- Saturday @678-780-0215.

"The service was excellent! They provided options I would not have thought of. Very professional!!"

Sonya D on April 2025


Avatar for Comfort Zone Heating & Cooling

Comfort Zone Heating & Cooling

2905 Marietta Hwy
4.66(
325
)
Approved Pro

Comfort Zone Heating & Cooling

2905 Marietta Hwy
4.66(
325
)
Approved Pro
Customers say: Super punctual
851 local quotes requested
18 years of experience

Comfort Zone Heating & Cooling is family owned and operated heating and cooling company. We are located in Canton, GA and have been in business for over 17 years! Our service area includes Canton, Woodstock and most of North Georgia. We provide heating and cooling maintenance, repairs and replacement. We pride ourselves in delivering 5 star customer service! Comfort Zone's core focus is "Being the hero is people's lives so they can focus on what matters most"! We operate focused on our Core Values of being humble, exceptional, responsible, optimistic, empathy and supportive team members. Our replacement appointments are FREE! We offer competitive pricing and financing options. Our Maintenance Program offers great benefits, including priority service appointments. 10% Military discount!

"Absolutely awful people - The "tech" (glorified salesman) came into my house trying to upsell me on a bunch of ineffectual products - when I declined - politely at that - he got hostile and started insulting me - when I reacted to his disrespectful attitude and told him to leave my property immediately - he then threatened me physically - he is very fortunate that I have a de-escalation attitude towards these matters - when the owner called me to ask about this - he promised he would make this right - he never did and the dangerous tech still works for him to this day. There's many other choices in this market - save yourself the headache and safety."

David R on July 2025

Comfort Zone Heating & Cooling is family owned and operated heating and cooling company. We are located in Canton, GA and have been in business for over 17 years! Our service area includes Canton, Woodstock and most of North Georgia. We provide heating and cooling maintenance, repairs and replacement. We pride ourselves in delivering 5 star customer service! Comfort Zone's core focus is "Being the hero is people's lives so they can focus on what matters most"! We operate focused on our Core Values of being humble, exceptional, responsible, optimistic, empathy and supportive team members. Our replacement appointments are FREE! We offer competitive pricing and financing options. Our Maintenance Program offers great benefits, including priority service appointments. 10% Military discount!

"Absolutely awful people - The "tech" (glorified salesman) came into my house trying to upsell me on a bunch of ineffectual products - when I declined - politely at that - he got hostile and started insulting me - when I reacted to his disrespectful attitude and told him to leave my property immediately - he then threatened me physically - he is very fortunate that I have a de-escalation attitude towards these matters - when the owner called me to ask about this - he promised he would make this right - he never did and the dangerous tech still works for him to this day. There's many other choices in this market - save yourself the headache and safety."

David R on July 2025


Avatar for Armato Heating and Air

Armato Heating and Air

3180 Florence Rd.
5.00(
12
)
Approved Pro

Armato Heating and Air

3180 Florence Rd.
5.00(
12
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2528 local quotes requested

HVAC Installation Experts - Armato Heating and Air With over 25 years of dedicated experience in HVAC installations, Armato Heating and Air has established itself as a trusted name in the Atlanta metro region. As an exclusive Daikin dealer, we proudly offer industry-leading HVAC solutions that ensure the highest quality & comfort, and efficiency for your home. Our team of HVAC installation experts is committed to delivering professional, reliable, and top-tier service. Whether you want to upgrade your existing HVAC system, replace an outdated unit, or install a new heating and cooling system, we have the expertise and skills to get the job done right the first time. At Armato Heating and Air, we specialize in installing high-efficiency Daikin HVAC systems, which are renowned for their innovative technology and exceptional performance. Our exclusive partnership with Daikin offers some of the most comprehensive warranty packages, giving you peace of mind and long-lasting comfort. Ask your HVAC designer about the available rebates & our 12/12/12 WARRANTY! We take pride in providing our clients with customized HVAC solutions that fit their unique needs and preferences. From residential HVAC installations to commercial projects, our certified technicians use the latest tools and techniques to ensure optimal performance and energy savings. Choose Armato Heating and Air for your next HVAC installation and experience the difference that quality and experience can make. Contact us today to schedule a consultation or learn more about our Daikin products and services!

"Brent from Armato heating and air gave me a deal.I could not refuse 12years parts, service , maintenance. Unbeatable deal. Daikin is a an efficient quiet quality heat pump. Great price. Also tax credit. This is the best system I have owned. I gave it. Three weeks before I left my review to make sure it worked well. The installation team were top notch. They were on time neat knowledgeable and quick. Definitely the A team. Which is one of the most important things about getting a new heat pump is the installation. If you don't get a Daikin from Brent @ Armato heating and air. Your making a huge mistake."

Anthony M on April 2025

HVAC Installation Experts - Armato Heating and Air With over 25 years of dedicated experience in HVAC installations, Armato Heating and Air has established itself as a trusted name in the Atlanta metro region. As an exclusive Daikin dealer, we proudly offer industry-leading HVAC solutions that ensure the highest quality & comfort, and efficiency for your home. Our team of HVAC installation experts is committed to delivering professional, reliable, and top-tier service. Whether you want to upgrade your existing HVAC system, replace an outdated unit, or install a new heating and cooling system, we have the expertise and skills to get the job done right the first time. At Armato Heating and Air, we specialize in installing high-efficiency Daikin HVAC systems, which are renowned for their innovative technology and exceptional performance. Our exclusive partnership with Daikin offers some of the most comprehensive warranty packages, giving you peace of mind and long-lasting comfort. Ask your HVAC designer about the available rebates & our 12/12/12 WARRANTY! We take pride in providing our clients with customized HVAC solutions that fit their unique needs and preferences. From residential HVAC installations to commercial projects, our certified technicians use the latest tools and techniques to ensure optimal performance and energy savings. Choose Armato Heating and Air for your next HVAC installation and experience the difference that quality and experience can make. Contact us today to schedule a consultation or learn more about our Daikin products and services!

"Brent from Armato heating and air gave me a deal.I could not refuse 12years parts, service , maintenance. Unbeatable deal. Daikin is a an efficient quiet quality heat pump. Great price. Also tax credit. This is the best system I have owned. I gave it. Three weeks before I left my review to make sure it worked well. The installation team were top notch. They were on time neat knowledgeable and quick. Definitely the A team. Which is one of the most important things about getting a new heat pump is the installation. If you don't get a Daikin from Brent @ Armato heating and air. Your making a huge mistake."

Anthony M on April 2025


Avatar for Coolray Heating & Air Conditioning

Coolray Heating & Air Conditioning

1787 Williams Dr
4.77(
1,309
)
Approved Pro

Coolray Heating & Air Conditioning

1787 Williams Dr
4.77(
1,309
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
2525 local quotes requested

Coolray has served the Atlanta metro area since 1966 and offers professional heating, air conditioning, plumbing and electrical. We base our business principles on people helping people with honest, dependable service backed by our peace of mind warranties and guarantees ensuring your 100% satisfaction. 350 employees. No subs. Charges a flat rate. Senior Discount on Service Repairs only, cannot be used with other offers.

"Cool Ray technician John H. has visited our house several times over the past several years and is always professional, he explains what he's doing and answers all our questions. He is like the other technicians that Cool Ray has, great at what they do and trustworthy."

Harold M on September 2025

Coolray has served the Atlanta metro area since 1966 and offers professional heating, air conditioning, plumbing and electrical. We base our business principles on people helping people with honest, dependable service backed by our peace of mind warranties and guarantees ensuring your 100% satisfaction. 350 employees. No subs. Charges a flat rate. Senior Discount on Service Repairs only, cannot be used with other offers.

"Cool Ray technician John H. has visited our house several times over the past several years and is always professional, he explains what he's doing and answers all our questions. He is like the other technicians that Cool Ray has, great at what they do and trustworthy."

Harold M on September 2025


Jones Climate Control

3230 Hwy 42 N
4.00(
13
)
Approved Pro

Jones Climate Control

3230 Hwy 42 N
4.00(
13
)
Approved Pro
Customers say: Terrific value
2172 local quotes requested
39 years of experience

Locally owned & operated North American Technician Excellence (NATE) Certified. Licensed for commercial and residentail heating and air in the State of Georgia License Cn209727.

"Great service and fast response time. Very pleased and will definitely be using Jones Climate Control again in the future."

Jessica T on June 2022

Locally owned & operated North American Technician Excellence (NATE) Certified. Licensed for commercial and residentail heating and air in the State of Georgia License Cn209727.

"Great service and fast response time. Very pleased and will definitely be using Jones Climate Control again in the future."

Jessica T on June 2022


Avatar for Cool Air Mechanical LLC

Cool Air Mechanical LLC

1950 Guffin Lane
4.75(
267
)
Approved Pro

Cool Air Mechanical LLC

1950 Guffin Lane
4.75(
267
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
5419 local quotes requested

For years, Cool Air Mechanical has been an expert provider of heating, cooling, plumbing, indoor air quality, generators and electrical services throughout the greater Atlanta region. If you find that it is time to have a new heating or cooling system installed in your home, or if you need someone to take over maintenance for you HVAC system in Atlanta, call us today and learn more about our full range of services. Each of our technicians is chosen based on their ability to provide the utmost in service to each of the customers they visit and they are prepared for nearly any issue that could arise. If you are interested in getting more out of your heating and cooling systems in Atlanta or the surrounding area, give us a call today. Additional website: www.770coolair.com

"Cool Air Mechanical LLC delivered exceptional service with our water heater installation! From the moment we scheduled the appointment, their team was professional, punctual, and incredibly knowledgeable. They assessed our needs thoroughly and guided us to the perfect unit for our home. Installation was seamless—efficient, clean, and done with care. We appreciated the technicians’ attention to detail and their willingness to explain everything clearly. What truly stood out was their commitment to customer satisfaction. They even followed up to ensure everything was running perfectly! It’s rare to find a company that combines technical expertise with genuine courtesy. Highly recommend Cool Air Mechanical for anyone in need of top-notch HVAC or plumbing services. They’ve earned our trust and future business!"

Carli S on July 2025

For years, Cool Air Mechanical has been an expert provider of heating, cooling, plumbing, indoor air quality, generators and electrical services throughout the greater Atlanta region. If you find that it is time to have a new heating or cooling system installed in your home, or if you need someone to take over maintenance for you HVAC system in Atlanta, call us today and learn more about our full range of services. Each of our technicians is chosen based on their ability to provide the utmost in service to each of the customers they visit and they are prepared for nearly any issue that could arise. If you are interested in getting more out of your heating and cooling systems in Atlanta or the surrounding area, give us a call today. Additional website: www.770coolair.com

"Cool Air Mechanical LLC delivered exceptional service with our water heater installation! From the moment we scheduled the appointment, their team was professional, punctual, and incredibly knowledgeable. They assessed our needs thoroughly and guided us to the perfect unit for our home. Installation was seamless—efficient, clean, and done with care. We appreciated the technicians’ attention to detail and their willingness to explain everything clearly. What truly stood out was their commitment to customer satisfaction. They even followed up to ensure everything was running perfectly! It’s rare to find a company that combines technical expertise with genuine courtesy. Highly recommend Cool Air Mechanical for anyone in need of top-notch HVAC or plumbing services. They’ve earned our trust and future business!"

Carli S on July 2025

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FAQs for thermostat installation and replacement projects in Cumming, 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 Cumming, 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.

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