Thermostat

A thermostat is the control center for your home's heating and cooling system, letting you set comfortable temperatures and manage energy costs. Whether you're upgrading to a smart model, troubleshooting inconsistent readings, or need help with installation, understanding your options makes all the difference. Angi connects you with pros who handle thermostat services and provides guides to help you make informed decisions.

Related to Thermostat Service

Thermostat Service Articles and Advice
Angi  •  Aug 22, 2026
Thermostat Installation or Replacement: Everything You Need to Know
Is your HVAC system running non-stop or failing to cool? Learn about thermostat installation or replacement costs, warning signs, and how to hire a local pro.
Gemma Johnstone  •  Aug 4, 2026
Why Is My Thermostat Not Working?: 5 Things to Try When the Temperature Is Acting Up
Learn how to troubleshoot a thermostat to understand if a simple and inexpensive DIY fix can get your HVAC unit up and running again.
Jamie Cattanach  •  Aug 4, 2026
What’s the Best AC Temperature to Save Energy—and Stop Arguing?
The best AC temperature for energy-saving has long been considered 78 degrees Fahrenheit—but the real answer can be a bit more nuanced. Read on to learn more.
Amy Pawlukiewicz  •  Aug 4, 2026
10 Innovative Smart Home Trends for 2022 and Beyond
Smart devices seem to have infiltrated every aspect of home life, with no end in sight for continuing innovation. Here are 10 smart home trends to keep your eye on.
Matt Marandola  •  Aug 4, 2026
Are Smart Homes Worth It in 2026? Here’s What to Know
Are smart homes worth it in 2026? With the advancement of smart home technology and its benefits, smart home tech may end up in every household.
D.P. Taylor  •  Aug 4, 2026
How to Lower Your Utility Bills While on Vacation
When leaving home for weeks or months at a time, you should shut down certain utilities and appliances to save on energy usage. This guide breaks it all down.
Ginny Bartolone  •  Aug 1, 2026
The Best Temperature for Sleep
What’s the best temperature for sleeping? Discover ways to improve your sleep hygiene and quality for more restful evenings and more alert days.
Kaitlyn Pacheco  •  Aug 1, 2026
35 Ways to Prepare Your House for Holiday Vacation [+ Free Checklists]
Preparing your home for a holiday vacation? Before traveling, take care of these crucial tasks around the house so you can enjoy your time away stress-free.
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Common Thermostat Service Questions

Yes, depending on the type of thermostat you buy. Both smart and programmable thermostats make it easy to adjust your home's temperature so you're not blasting the heat or air conditioning when you don't need it. 

While these thermostat types cost more upfront than manual and non-programmable thermostats, they can save you as much as $180 per year on your energy bills. 

Additionally, some states, like California and Florida, have pilot programs that allow smart thermostats to receive wireless signals from utility companies. These signals allow the thermostat to adjust the temperature according to the price of electricity at various times per day, which can make the long-term savings of smart thermostats worth the initial cost.

No, not all thermostats require a C-wire. Older manual and programmable thermostats typically do not need one. While many smart thermostats do require a C-wire to function correctly, some models can operate without one, often at the expense of certain features. A C-wire provides a constant source of power, which enables the thermostat to stay connected to Wi-Fi and keep its display screen lit on-demand. If you are upgrading from an older thermostat to a smart model that requires a C-wire, you may need to install one first for it to work as intended.

Yes, HVAC zoning is generally considered worth the investment by both experts and homeowners. Zoned systems offer significant benefits in convenience, efficiency, and comfort by allowing you to set different temperatures for various rooms or 'zones' in your house. This ability to heat and cool only the spaces you're using leads to energy savings and lower utility bills. Zoned systems are especially effective in multi-level homes that experience temperature fluctuations, but even smaller homes can benefit from the ability to adjust temperatures more quickly. While the up-front installation cost can be high, many find it's a worthwhile long-term investment, particularly for those who plan to stay in their home for a while.

The first indicator that your thermostat is malfunctioning is if it just doesn't turn on at all. If the AC, heating, or fan functions won't turn on or off no matter how often you try through the device or app, that's also an indicator that the culprit for your cooling problems is the thermostat. If the thermostat forgets the settings you programmed or the display doesn't match the real temperature in the room, those are signs that the thermostat is broken.

There are many reasons a thermostat might go on the fritz, including faulty wiring, a dead battery, an error in programming the settings, or even a buildup of dirt in the physical thermostat itself. Fortunately, it’s relatively easy to troubleshoot many common thermostat issues yourself, so you can get back to the easy-to-set, even indoor climate control you’re used to.