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Top-Rated Thermostat installers and replacers in Saint George - Updated Nov 2026

Avatar for We Do HVAC
We Do HVAC
5.0(
8
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

WE Do HVAC proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

2 neighbors recently requested a quote
S&S Mechanical - Plumbing Heating Cooling
4.0(
1
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

Approved (Corporate)

In business since 1983

Free estimates

Credit card accepted

S&S Mechanical is a trusted plumbing, heating, and cooling contractor serving St. George and the greater Southern Utah region since 1983. With over 40 years of experience, the company provides full-service residential and commercial HVAC and plumbing solutions, including repair, installation, maintenance, and system replacements. Known for fast response times and dependable service, S&S Mechanical employs Trust Certified technicians trained to work on all major brands and systems. Their team focuses on delivering reliable comfort solutions year-round, from emergency heating and cooling repairs to complete plumbing services. Backed by decades of local experience and a strong reputation for customer satisfaction, S&S Mechanical continues to be a go-to provider for homeowners and businesses seeking professional, efficient, and long-lasting home service solutions in Southern Utah.

Avatar for Thompson Plumbing, Heating, Cooling & Electrical
Thompson Plumbing, Heating, Cooling & Electrical
New to Angi
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

When you need plumbing services for your St. George area home, do what thousands of others have done for decades and call on the proven expertise of the team at Thompson Plumbing. Our plumbers are able to tackle any job, from installing water heaters to dealing with an after-hours crisis. Whether you're hiring for a planned project, or you need an emergency plumber, enjoy flawless work at great prices backed by some of the best warranties in the business.

Response time1 day
12 neighbors recently requested a quote
Avatar for Dash Heating and Air, LLC
Dash Heating and Air, LLC
4.6(
36
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

In business since 2014

Free estimates

Emergency services offered

"They installed a mini split in my garage, they were so fast and very professional, I can now play with my toys without sweating or freezing this winter. Thanks Corey and Jordan!"
Upgrading to a high efficient gas furnace
Blown Fuse
Location Found
Response time6 hrs
Response rate96%
Recommended by94%of homeowners
Avatar for Mr Rooter Plumbing of St. George
Mr Rooter Plumbing of St. George
4.8(
87
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"Very well.  Had to come back repeatedly due to the different steps of installation needed.  I had to get electrical and countertops and cabinetry done in between his visits before he could complete the job.  He was always prompt and came as soon as I called and was very good at giving me quality performance and products."
Clearing the sink drain line
Septic Tank and outlet
Hydrojet
repair water leak and valve
replaced pressure reducing valve and water lines

+41

Recommended by98%of homeowners
Desert Comfort LLC
5.0(
3
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

In business since 2024

Free estimates

Credit card accepted

At Desert Comfort, LLC we're dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in heating and cooling systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results & look forward to building long-term relationships with our clients, and guarantee your satisfaction.

Response time50 mins
Recommended by100%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

In business since 1971

Credit card accepted

"AHS is ok. They cover repairs of most everything under the roof of your house. The companies that contract with them are not always the best. You call AHS with the issue, they send a fax to the repair company and give you the contact info. If they don't contact you within 24 hours, you call them. Sometimes they answer, sometimes they don't. When they arrive (usually three days or so later), they service the item. if it has issues within the 90 days, you call AHS again, they are sent out with no charge. If the serviceman decides the unit is unrepairable, AHS will allow you to choose a replacement from their listing (usually not as good as what you have) they will install and remove your old item, or give you wholesale amount to buy and install your own. Prices vary on what you want covered and what you want the copay to be, plus where you live. For me it is 49.99 per month with a 75.00 time of service order. You can have more than one item serviced at the same time under the same fee. If you have a SEAR product the repair guys are great. Not that wild about the other ones they send out. But it is a big savings compared to calling someone on your own. The cost of service is only the 75.00 copay."
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+2

Recommended by65%of homeowners
Avatar for Vortex Filtration Inc
Vortex Filtration Inc
5.0(
5
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Vortex Filtration Inc is a excellent company with vast experience & knowledge in conditioning potable well water. I recommend Vortex Filtration Inc to design build and install their patented Vortex water system to solved all well water conditioning issues. My client had a problem for over tens years prior to the installation of the Vortex system. Once installed, the well water in the holding tank was crystal clear. Thanks Vortex!"
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+9

Recommended by100%of homeowners
Avatar for JC builders and construction
JC builders and construction
5.0(
5
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

In business since 2022

Free estimates

Credit card accepted

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!

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+8

Recommended by100%of homeowners
Avatar for David N Sons Handyman LLC
David N Sons Handyman LLC
4.8(
5
)
Thermostat - Install or Replace

Serving Saint George, UT and surrounding areas

"David gave us a few tips on how to prepare for this project giving us an estimate - which was very reasonable. When it came to do the actual job David punctual or called to let us know when to expect him. Work was first rate, clean up went smoothly, and we love our new Master. Should have done this sooner. Price was right! And the quality great! Thank You."
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Response time3 days
Response rate100%
Recommended by80%of homeowners
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FAQs for thermostat installation and replacement projects in Saint George, UT

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 Saint George, UT homeowners’ guide to thermostat installations and replacements

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