Who Should I Call to Replace a Thermostat?

Call a thermostat installation specialist to replace an old thermostat

Woman controlling temperature with a thermostat
Photo: rh2010 / Adobe Stock
Woman controlling temperature with a thermostat
Photo: rh2010 / Adobe Stock
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When your thermostat starts erasing your settings or sending incorrect temperature signals to the HVAC system, it can lead to frustration and discomfort in your own home. Thermostats tend to wear out after 10 years, so if you notice your thermostat isn’t working like it used to, it’s probably time for an upgrade. But who do you call to replace a thermostat? From HVAC repair pros to handypeople, here’s who to call to replace a thermostat.

Benefits of Hiring a Thermostat Installer for Thermostat Replacement

It’s best to hire a local thermostat installer to replace an old thermostat. These pros will know how to install a new thermostat, even if you’re upgrading from an old, manual model to one of the newer types of thermostats, like a smart thermostat. Because the thermostat controls the HVAC system, incorrect installation can cause your HVAC to short-cycle, run continuously, or fail to turn on when you need it. These problems can increase wear and tear on the system, leading to costly repairs.

Aside from offering their expertise, there are several additional benefits to hiring a thermostat installer. Thermostats and HVAC systems often include warranties that may be voided if someone other than a licensed professional does any work to the system, including replacing a thermostat. A thermostat installer will install the new thermostat, check for any issues, and help you program it for comfort and energy savings.

If you’re updating to a smart thermostat, you may need to install a C-wire, or common wire. Thermostat installers will know how to tell whether your home already has a C-wire or not and how to install one if needed.

Time is another huge benefit. It may take a pro 30 minutes to an hour to install a new thermostat. But for DIYers or even a handyperson, it takes extra time to decipher the wiring (thermostat wiring isn’t always color-coded) and familiarize themselves with the new thermostat manual.

Can I DIY Replacing a Thermostat?

Types of Thermostats

Experienced DIYers who have some background knowledge in electrical systems may be able to replace a thermostat themselves with no trouble. This job is easiest if you’re swapping an old thermostat for a similar model rather than trying to upgrade a manual thermostat to a digital one.

However, it’s best to leave this one to the pros for a few reasons. If you connect the wrong wires, you could damage them or blow a fuse. Improper installation can also lead to immediate or long-term damage to the HVAC system. Plus, if you want to count on your warranty for any future HVAC or thermostat repairs, keep in mind that DIYing could void that warranty.

Can I Hire an HVAC Repair Pro for Thermostat Replacement?

HVAC repair pros are a good option if you’re looking for someone to replace a thermostat. In fact, you may find that many thermostat installers work with an HVAC company. Plus, by hiring an HVAC expert to replace your thermostat, you can also book an HVAC inspection at the same time. This pro can take a look at the entire system, check for any potential problems, and help with tune-ups.

Can I Hire an Electrician to Replace a Thermostat?

Man adjusting digital thermostat
Photo: Adobe Stock 369271006 / Adobe Stock

Installing a thermostat involves working with wiring, so hiring an electrician to replace a thermostat is another safe choice. An electrician can also add a new C-wire if you’re looking to install a smart thermostat and don’t already have one. However, if you have a complex HVAC system, you may also want to hire an HVAC repair pro for assistance.

Can I Hire a Handyperson to Replace a Thermostat?

There are tons of jobs around the house that handypeople are perfect for, like cleaning out gutters or adding a fresh coat of paint to a room. Many handypeople even have solid electrical skills that could help with replacing a thermostat. However, because thermostat replacements can be complex, especially if you need to install new wiring or move the thermostat, it’s best to hire a thermostat installer or another pro, like an electrician or HVAC repair specialist, instead.

How Does a Thermostat Installer Replace a Thermostat?

To start, the pro will turn off the power to the thermostat and HVAC system. This will help prevent any shocks while they work. Then, they’ll remove the existing thermostat, starting with its face panel, and check the thermostat’s circuit board for a C-wire.

If the thermostat installer doesn’t see a C-wire but you’re planning to install a smart thermostat, you’ll need the pro to install a new C-wire. The expert will disconnect the existing wires, remove the baseplate of the old thermostat, and then install a new C-wire that connects the HVAC system to the thermostat through the walls.

Next, the pro will install the baseplate of the new thermostat. They’ll make sure the new thermostat sits in the same position as the old one and is level. Then, they’ll be ready to reconnect the wires and attach the front panel of the thermostat.

After returning the power supply and testing the system, the pro can help you program your thermostat to the settings that will keep your family comfortable.

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