Top-rated thermostat installers and replacers.

Get matched with top thermostat installers and replacers in Gary, IN

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.

Find Thermostat installers and replacers in Gary

Avatar for Regional Plumbing Heating & Air
Regional Plumbing Heating & Air
4.5(
105
)
Thermostat - Install or Replace

Serving Gary, IN and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"I had to replace my old boiler heat as it was not repairable. So I purchased a NEW wall-mounted, modulating gas, condensing, combination Boiler. It replaces BOTH my boiler heater & Hot water tank. The new unit is attached up on wall with a small tank, gas, water lines below. The 2nd pic is where old hot water heater used to sit. Now I have all that extra storage space!! And no need for upkeep & repairs on a big old hot water heater!! The only thing I can complain about was that they were here for 12 hrs!! start to finish. Plus I was here sitting practically on top of a space heater dressed very warmly all day. And of course this was in January 2025 in northwest Indiana. I think this was a 1st time install for them in an older home not a new build. I would have rated them as a 5 star if not for the LONG DAY it took to be installed. They all were very nice, kind & cleaned up their mess. They brought large painter cloths to put down on floors due to going in out in the snow also."
Before
New Furnace
Before
After
New Furnace Install

+35

Response time12 hrs
Response rate90%
48 neighbors recently requested a quote
TruBlue of Merrillville
3.5(
52
)
Thermostat - Install or Replace

Serving Gary, IN and surrounding areas

Approved

In business since 2013

Free estimates

Customers say: Quick response

"TrueBlue came out the night our air-condition blower motor broke down. They had it repaired the same night. Marco was on top of every detail and very polite. Our air conditioner is up and running at full speed. Thank you True Blue"
Full Basement Remodel
Kitchen #1
Full Basement Remodel
Kitchen #1
Full Basement Remodel

+28

Response time7 hrs
2 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for GROMM Electric LLC
GROMM Electric LLC
New to Angi
Thermostat - Install or Replace

Serving Gary, IN and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Electrical professional with 20 years of hands-on experience in residential, commercial, and heavy industrial electrical construction. Raised in a family-owned electrical company that grew from a 10-person shop to a 500-electrician operation serving projects nationwide and internationally.\n\nExtensive field experience across high-demand environments including power plants, steel mills, paper mills, chemical plants, oil refineries, coal mines, Air Products facilities, and large food manufacturing plants.\n\nHighly skilled in:\n • Low-voltage systems, fire alarm, controls, and automation\n • Medium-voltage installations and power distribution\n • Underground services and excavation coordination\n • Bucket truck and service work\n • Smart home and modern electrical systems\n • Residential, commercial, and industrial construction from ground-up to retrofit\n\nCertifications & Credentials:\n • Chicago Licensed Electrician\n • OSHA 10 & OSHA 30\n • MSHA Certified\n • CPR Certified\n • NCCER Certified\n\n

...
Showing 1-10 of 122
FAQs for thermostat installation and replacement projects in Gary, IN

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 Gary, IN homeowners’ guide to thermostat installations and replacements

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