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Find Thermostat installers and replacers in Lawrenceville

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 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


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 One Hour Heating & Air Conditioning

One Hour Heating & Air Conditioning

1360 Union Hill Road
5.00(
9
)
Approved Pro

One Hour Heating & Air Conditioning

1360 Union Hill Road
5.00(
9
)
Approved Pro
38 local quotes requested
Free onsite estimate

When homeowners want a reliable heating or air conditioning system that they don't have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort. Each location is locally owned and operated. At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. We back all of our work with a 100% customer satisfaction guarantee for two years, and it is why we are always on time guaranteed.

"One hour heating and air conditioning did a great job for us! We had a capacitor go bad and they had us back up and running in no time! Good communication and good pricing. I would highly recommend! "

Ross N on August 2025

When homeowners want a reliable heating or air conditioning system that they don't have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort. Each location is locally owned and operated. At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. We back all of our work with a 100% customer satisfaction guarantee for two years, and it is why we are always on time guaranteed.

"One hour heating and air conditioning did a great job for us! We had a capacitor go bad and they had us back up and running in no time! Good communication and good pricing. I would highly recommend! "

Ross N on August 2025


Avatar for Chuck Home Repair and Renovation

Chuck Home Repair and Renovation

4.84(
45
)
Approved Pro

Chuck Home Repair and Renovation

4.84(
45
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
295 local quotes requested

We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"Rafael was on time, professional, and careful with my belongings. I would hire again definitely!"

treona p on October 2025

We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"Rafael was on time, professional, and careful with my belongings. I would hire again definitely!"

treona p on October 2025


"I highly recommend Julio. He re-stained and re-sealed my wood front door. This took multiple trips to my house to put on mulitple coats and he showed up everytime, also keeping in touch about precise estimated time of arrival. He also did excellent work, with attention to detail and ensuring that he didn't damage anything else in the process. Very nice to work with and professional. Will hire again. Before and after photos attached. Any unevenness in the stain is due to nature of the wood itself; he balanced out the absorption of stain very well compared to the original stain on the door."

Georgia M on October 2025

Handyman with over 10 years of experience working on residential homes. My services include but are not limited to : Paint, Drywall, Carpentry, Plumbing, Electrical and Tile.

"I highly recommend Julio. He re-stained and re-sealed my wood front door. This took multiple trips to my house to put on mulitple coats and he showed up everytime, also keeping in touch about precise estimated time of arrival. He also did excellent work, with attention to detail and ensuring that he didn't damage anything else in the process. Very nice to work with and professional. Will hire again. Before and after photos attached. Any unevenness in the stain is due to nature of the wood itself; he balanced out the absorption of stain very well compared to the original stain on the door."

Georgia M on October 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
1726 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

"Thumbs up for the construction at my residence, a three story elevator shaft"

Diana D on October 2024

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

"Thumbs up for the construction at my residence, a three story elevator shaft"

Diana D on October 2024


Avatar for TE Certified Electrical, Plumbing, Heating & Cooling

TE Certified Electrical, Plumbing, Heating & Cooling

98 Patterson Rd
4.38(
8
)
Approved Pro

TE Certified Electrical, Plumbing, Heating & Cooling

98 Patterson Rd
4.38(
8
)
Approved Pro
Customers say: Quick response
707 local quotes requested
27 years of experience

TE Certified Electrical, Plumbing, Heating & Cooling understands there is never a great time to need a home repair. That's why we make scheduling easy, arrive in three-hour arrival windows, drive fully stocked trucks, give flat rate pricing, and back our work with a lifetime workmanship guarantee. Services offered: Residential Electrical, Plumbing, Heating and Cooling - Inspection, Repair, Replacement, Maintenance. Electrical - Rewiring, Outlets, and Switches, Whole House Back-Up Generators, Indoor/Outdoor Lighting, Car Chargers, Surge Protection, Ethernet & Cable Installation. Plumbing - Water Lines, Water Heaters, Tankless Water Heaters, Fixtures and Faucets, Garbage Disposals, Sewer Lines, Pressure Regulators. HVAC - Air Conditioners, Furnaces, Air Handlers, Heat Pumps, Ductless Heaters, Indoor Air Quality

"Knocked it out quick at a great price. Great service."

Matt G on January 2025

TE Certified Electrical, Plumbing, Heating & Cooling understands there is never a great time to need a home repair. That's why we make scheduling easy, arrive in three-hour arrival windows, drive fully stocked trucks, give flat rate pricing, and back our work with a lifetime workmanship guarantee. Services offered: Residential Electrical, Plumbing, Heating and Cooling - Inspection, Repair, Replacement, Maintenance. Electrical - Rewiring, Outlets, and Switches, Whole House Back-Up Generators, Indoor/Outdoor Lighting, Car Chargers, Surge Protection, Ethernet & Cable Installation. Plumbing - Water Lines, Water Heaters, Tankless Water Heaters, Fixtures and Faucets, Garbage Disposals, Sewer Lines, Pressure Regulators. HVAC - Air Conditioners, Furnaces, Air Handlers, Heat Pumps, Ductless Heaters, Indoor Air Quality

"Knocked it out quick at a great price. Great service."

Matt G on January 2025


Avatar for Keep Smiling Plumbing & Electric

Keep Smiling Plumbing & Electric

3705 Harrison Rd SW
4.66(
132
)
Approved Pro

Keep Smiling Plumbing & Electric

3705 Harrison Rd SW
4.66(
132
)
Approved Pro
Customers say: Super punctual
3187 local quotes requested
40 years of experience

Keep Smiling Plumbing Electric Heating and Cooling is a family-owned, family-operated, full-service plumbing electric and HVAC business, serving Gwinnett County, Georgia. We are Master Plumbers and members of the Plumbing & Mechanical Association of Georgia. Keep Smiling Plumbing & Electric is there when you need us, ready to take care of any problem that you may have with your plumbing or electrical systems. We also have available a full line of quality replacement products if you want to upgrade or update.

"Keep Smiling sent me Roy Wint and I'm very glad they did. Roy installed a replacement ceiling fan as well as four recessed lights. The result of the project is a much better lit and livable living room. I want to extend special kudos to Roy. He was very professional, polite, and friendly. A joy to have working on my home. He went out of his way to avoid creating any holes in the ceiling other than those housing the lighting fixtures. And he also did a safety inspection of my home's fuse box. I can't say enough good about this young man. I'll definitely be calling him the next time I need electrical work done in my home."

Jana J on October 2025

Keep Smiling Plumbing Electric Heating and Cooling is a family-owned, family-operated, full-service plumbing electric and HVAC business, serving Gwinnett County, Georgia. We are Master Plumbers and members of the Plumbing & Mechanical Association of Georgia. Keep Smiling Plumbing & Electric is there when you need us, ready to take care of any problem that you may have with your plumbing or electrical systems. We also have available a full line of quality replacement products if you want to upgrade or update.

"Keep Smiling sent me Roy Wint and I'm very glad they did. Roy installed a replacement ceiling fan as well as four recessed lights. The result of the project is a much better lit and livable living room. I want to extend special kudos to Roy. He was very professional, polite, and friendly. A joy to have working on my home. He went out of his way to avoid creating any holes in the ceiling other than those housing the lighting fixtures. And he also did a safety inspection of my home's fuse box. I can't say enough good about this young man. I'll definitely be calling him the next time I need electrical work done in my home."

Jana J on October 2025


Avatar for Premier HVAC Mechanical Corporation

Premier HVAC Mechanical Corporation

6669 Peachtree Industrial Blvd
4.81(
42
)
Approved Pro

Premier HVAC Mechanical Corporation

6669 Peachtree Industrial Blvd
4.81(
42
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
263 local quotes requested

Premier HVAC Mechanical Corporation is a 2nd generation company, backed by 35+ years of expertise. We provide reliable heating, air conditioning, and indoor air-quality services in residential and light commercial markets. Steve West, owner, began his training in his youth, first mentored by his dad and grandfather, the best in the business. Steve and his dad built a business based on honesty, reliability, loyalty and providing service with the utmost integrity. Steve ultimately took over the family owned business and ventured to the Metro Atlanta area where Premier will continue to service its new customers with the same values as it has for decades. We service all makes and models of HVAC systems, such as: + Amana + American Standard + Bryant + Carrier + Goodman + Heil + Lenox + Rheem + Ruud + Trane + Whirlpool We offer our customers the Premier HVAC Comfort Maintenance Program(CMP), as it is a vital part of maintaining the efficiency and warranties of all air conditioning and heating systems. Being an elite member of our CMP, you will experience priority service when scheduling appointments as well as discounts on repairs, equipment and service call fees. We focus on educating and guiding customers based upon our vast experience in determining which heating or air conditioning system best fit their needs. We also offer germicidal/UV lights to control bacteria and mold, furnace humidifiers, dehumidification systems, and electronic air-cleaning systems. In addition, we specialize in servicing and installation for multi-family apartments. We are a small company with big service goals.

"Their tech came to our townhome for the HVAC heat pump issue, spent more than 3 hours diagnosing the issue and then told us that we had to replace the zoning control board and the thermostat at $1400 in total. We were charged $390.00 for the diagnosis. We were not convinced by what he told us. Then, we called another HVAC contractor from different company to look at the issue. He was able to pin point the issue with the unit in 15 minutes and fixed it by refilling refrigerant at around $300! What a difference! I will never trust and use Premier HVAC Mechanical Corporation again!"

Zhentao H on January 2024

Premier HVAC Mechanical Corporation is a 2nd generation company, backed by 35+ years of expertise. We provide reliable heating, air conditioning, and indoor air-quality services in residential and light commercial markets. Steve West, owner, began his training in his youth, first mentored by his dad and grandfather, the best in the business. Steve and his dad built a business based on honesty, reliability, loyalty and providing service with the utmost integrity. Steve ultimately took over the family owned business and ventured to the Metro Atlanta area where Premier will continue to service its new customers with the same values as it has for decades. We service all makes and models of HVAC systems, such as: + Amana + American Standard + Bryant + Carrier + Goodman + Heil + Lenox + Rheem + Ruud + Trane + Whirlpool We offer our customers the Premier HVAC Comfort Maintenance Program(CMP), as it is a vital part of maintaining the efficiency and warranties of all air conditioning and heating systems. Being an elite member of our CMP, you will experience priority service when scheduling appointments as well as discounts on repairs, equipment and service call fees. We focus on educating and guiding customers based upon our vast experience in determining which heating or air conditioning system best fit their needs. We also offer germicidal/UV lights to control bacteria and mold, furnace humidifiers, dehumidification systems, and electronic air-cleaning systems. In addition, we specialize in servicing and installation for multi-family apartments. We are a small company with big service goals.

"Their tech came to our townhome for the HVAC heat pump issue, spent more than 3 hours diagnosing the issue and then told us that we had to replace the zoning control board and the thermostat at $1400 in total. We were charged $390.00 for the diagnosis. We were not convinced by what he told us. Then, we called another HVAC contractor from different company to look at the issue. He was able to pin point the issue with the unit in 15 minutes and fixed it by refilling refrigerant at around $300! What a difference! I will never trust and use Premier HVAC Mechanical Corporation again!"

Zhentao H on January 2024

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FAQs for thermostat installation and replacement projects in Lawrenceville, 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 Lawrenceville, 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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