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Find Thermostat installers and replacers in Lawrenceville

Avatar for Hill HVAC, LLC

Hill HVAC, LLC

4.96(
53
)
Approved Pro

Hill HVAC, LLC

4.96(
53
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
8 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 Casteel Heating, Cooling, Plumbing & Electrical

Casteel Heating, Cooling, Plumbing & Electrical

4.79(
89
)
Approved Pro

Casteel Heating, Cooling, Plumbing & Electrical

4.79(
89
)
Approved Pro
Customers say: Super punctual
100 local quotes requested
39 years of experience

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

"did a great job"

Christopher K on February 2026

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

"did a great job"

Christopher K on February 2026


Avatar for Keep Smiling Plumbing, Electric, Heating & Cooling

Keep Smiling Plumbing, Electric, Heating & Cooling

4.78(
130
)
Approved Pro

Keep Smiling Plumbing, Electric, Heating & Cooling

4.78(
130
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
600 local quotes requested

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.

"Easy communication and scheduling. Plumber was professional, knowledgeable and quick. I would definitely use them again. "

Daylin J on February 2026

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.

"Easy communication and scheduling. Plumber was professional, knowledgeable and quick. I would definitely use them again. "

Daylin J on February 2026


Avatar for Keep Smiling Plumbing, Electric, Heating & Cooling

Keep Smiling Plumbing, Electric, Heating & Cooling

4.52(
46
)
Approved Pro

Keep Smiling Plumbing, Electric, Heating & Cooling

4.52(
46
)
Approved Pro
Customers say: Quick response
41 years of experience
Emergency services offered

Since 1985, Keep Smiling Plumbing Electric Heating and Cooling has been providing Gwinnett County and the surrounding community with any ad all of their home service needs. We pride ourselves on quality workmanship, provided by a friendly, licensed, professional service experience delivered on time, at a fair price. We are equipped to handle every residential and light commercial service, including plumbing electrical heating and cooling services. Our team of professionals is pre-scheduled from the office to guarantee convenient appointment times and a phone call when we are headed to your home. Your service professionals are uniformed and arrive in a well-marked company vehicle. Our team members are prescreened, drug tested, and highly trained to ensure your experience is fast, effective, and affordable. We look forward to earning your business. -$39 Diagnostic Fee

"⭐️⭐️⭐️⭐️⭐️ I want to start by highlighting the *above and beyond* service I received from Keep Smiling Heating & Air. In the midst of a brutal Atlanta heatwave, I called in a panic because my newer AC unit had suddenly stopped blowing cold air. From the first point of contact, the experience was incredibly professional and reassuring. I received a confirmation text, a follow-up call when the technician was in route, and even a text introduction with a picture and background info on the technician. Who does that? **Keep Smiling does.** Technician **Byron Solares** was exceptional—knowledgeable, professional, and genuinely empathetic. I explained that I have my elderly father with a breathing condition living with me, and Byron not only resolved the issue efficiently, but took the time to explain everything clearly. Thanks to his quick work, we’re resting comfortably tonight."

Dwayne J on August 2025

Since 1985, Keep Smiling Plumbing Electric Heating and Cooling has been providing Gwinnett County and the surrounding community with any ad all of their home service needs. We pride ourselves on quality workmanship, provided by a friendly, licensed, professional service experience delivered on time, at a fair price. We are equipped to handle every residential and light commercial service, including plumbing electrical heating and cooling services. Our team of professionals is pre-scheduled from the office to guarantee convenient appointment times and a phone call when we are headed to your home. Your service professionals are uniformed and arrive in a well-marked company vehicle. Our team members are prescreened, drug tested, and highly trained to ensure your experience is fast, effective, and affordable. We look forward to earning your business. -$39 Diagnostic Fee

"⭐️⭐️⭐️⭐️⭐️ I want to start by highlighting the *above and beyond* service I received from Keep Smiling Heating & Air. In the midst of a brutal Atlanta heatwave, I called in a panic because my newer AC unit had suddenly stopped blowing cold air. From the first point of contact, the experience was incredibly professional and reassuring. I received a confirmation text, a follow-up call when the technician was in route, and even a text introduction with a picture and background info on the technician. Who does that? **Keep Smiling does.** Technician **Byron Solares** was exceptional—knowledgeable, professional, and genuinely empathetic. I explained that I have my elderly father with a breathing condition living with me, and Byron not only resolved the issue efficiently, but took the time to explain everything clearly. Thanks to his quick work, we’re resting comfortably tonight."

Dwayne J on August 2025


GHC Construction LLC

5.00(
9
)
Approved Pro

GHC Construction LLC

5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
31 years of experience

GHC Construction has 29 years construction experience and are family owned and operated specializing in handyman services: including minor remodeling, interior/exterior siding and trim repairs, deck and porch repairs, drywall repairs, cabinet installation and repairs, interior/exterior door installation, interior painting and minor and major repairs. Our services provide quality workmanship and products. If you're looking for a trusted handyman, with quality workmanship look no further.

"Mr. Raimondi was spectacular. He was prompt. His quotes were straightforward and reasonable. He answered questions and gave advice on things we could consider doing. We hired him to assist with a basement remodel and will be working with him on a few more projects to be done."

Buena G on July 2024

GHC Construction has 29 years construction experience and are family owned and operated specializing in handyman services: including minor remodeling, interior/exterior siding and trim repairs, deck and porch repairs, drywall repairs, cabinet installation and repairs, interior/exterior door installation, interior painting and minor and major repairs. Our services provide quality workmanship and products. If you're looking for a trusted handyman, with quality workmanship look no further.

"Mr. Raimondi was spectacular. He was prompt. His quotes were straightforward and reasonable. He answered questions and gave advice on things we could consider doing. We hired him to assist with a basement remodel and will be working with him on a few more projects to be done."

Buena G on July 2024


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
4 years of experience

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


Avatar for A&K Handyman

A&K Handyman

4.86(
7
)
Approved Pro

A&K Handyman

4.86(
7
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business, we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"Working with A&K was a great experience. All estimates and work were timely, clearly communicated, and professionally executed. I'd highly recommend working with A&K for any of your home repair/update needs."

Joshua I on August 2025

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business, we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"Working with A&K was a great experience. All estimates and work were timely, clearly communicated, and professionally executed. I'd highly recommend working with A&K for any of your home repair/update needs."

Joshua I on August 2025


"Did a good job."

Mack W on August 2025

ACM Home Repairs is a company that specializes in home and small business repairs and remodeling since 1998.

"Did a good job."

Mack W on August 2025


DMC Construction

5.00(
4
)

DMC Construction

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Home remodeling. Interior & exterior restoration. New construction

Home remodeling. Interior & exterior restoration. New construction


James Service Repair & Changeout Inc

No reviews yet

James Service Repair & Changeout Inc

No reviews yet
19 years of experience

James Service Repair & Changeout Inc is licensed and insured company based in Jonesboro, GA providing HVAC services on reasonable and competitive prices. Call us for more infromation. (404) 550-6410

James Service Repair & Changeout Inc is licensed and insured company based in Jonesboro, GA providing HVAC services on reasonable and competitive prices. Call us for more infromation. (404) 550-6410

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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.