Who replaces furnace thermostats?

Author: Dr. Max Goodwin  |  Last update: Wednesday, September 17, 2025

Most programmable thermostats and certain smart thermostats can be installed by an experienced do-it-yourselfer. But if you don't have any experience in installing or replacing a thermostat, we suggest you contact a certified HVAC professional as it may cost you more if the installation is not successful.

Does an electrician or HVAC install a thermostat?

A licensed electrician typically bills less, $50 to $100 per hour. Limited scope: HVAC technicians primarily focus on heating and cooling systems. If your thermostat installation involves complex electrical work or is part of a broader electrical project, you may need to hire an electrician.

Who do I call for thermostat replacement?

In many cases, installing a basic thermostat can be a DIY project for those with some electrical knowledge and experience. However, if the installation involves wiring or electrical systems beyond your expertise, it's best to leave it to a licensed electrician to ensure safety and proper functionality.

How much does it cost to replace a furnace thermostat?

Replacing a Thermostat. You'll pay between $15 and $300 for the unit in addition to labor ($65 to $100 per hour) to replace an old thermostat with a new one.

Who should replace the thermostat?

If you've exhausted basic troubleshooting, persistent issues with your thermostat or temperature regulation necessitate a visit from an HVAC professional.

How To Install Replace A Thermostat

Who to hire to replace a thermostat?

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.

How to tell if a furnace thermostat is bad?

A bad thermostat can be detected when your AC or furnace is not turning on, your HVAC systems are not turning off, the thermostat not responding, your HVAC system is short-cycling, the room temperature not matching the temperature displayed on the thermostat, and the programmed setting resetting themselves.

How many hours does it take to replace a thermostat?

Installation typically takes about 1 hour.

Can I replace my furnace thermostat myself?

In most cases, installing a new thermostat is a relatively simple do-it-yourself project that can result in improved comfort and convenience and one that can help you save energy.

How often do furnace thermostats go bad?

As with any system, eventually, your thermostat will become outdated. Modern home thermostats tend to have about a 10-year lifespan but are usually replaced sooner due to innovations in the market. Non-programmable thermostats have become outdated and replaced by programmable (or learning) thermostats.

Who puts in a new thermostat?

Yes, electricians are fully qualified to install thermostats. Electricians have the skill and knowledge to handle the electrical aspects of thermostat installation, ensuring that the device is properly connected to both your home's electrical system and HVAC equipment.

Who do I call if my thermostat isn't working?

If your wires are connected but your thermostat still isn't working properly, that means it's time to hire a professional. They'll open the thermostat and test the wires individually to see which one is faulty. Since messing with wires is dangerous, you'll want to contact a certified HVAC technician.

How urgent is a thermostat replacement?

HOW IMPORTANT IS A THERMOSTAT SERVICE OR REPAIR. It is never good to have an over-heating engine. Delaying replacement of the engine thermostat and continuing to drive the car can only result in far more costly engine repairs or replacement.

How much does an electrician charge to change a thermostat?

The thermostat may be replaced or installed in a house, apartment, or business by an electrician in two hours or less for around $65-$85 per hour — with a total labor cost of less than $170.

Can an electrician fix a furnace?

Homeowners need an electrician to deal with their electrical problems and an HVAC technician to fix issues with heating and cooling units. Since all modern HVAC systems use at least some electricity, even if they run on gas or propane, it's actually a little more complicated than homeowners might think.

Who fixes the thermostat in the house?

The only way to know for sure is to invest in a professional inspection. An HVAC professional will have the experienced and specialized equipment needed to thoroughly inspect, diagnose and repair your thermostat if this is the cause of your trouble.

Do I need to turn off furnace to change thermostat?

Turn Off Power to the HVAC System

The first step in how to install a thermostat is making sure the power is turned off to your existing thermostat. Turn off the power for your heating and air conditioning system at the main service panel. Its circuit breaker should be clearly labeled.

How do I know if I need a new furnace thermostat?

You should be able to turn on your heating or cooling system from the thermostat, or change operation back and forth from heating to cooling. If you make changes at the thermostat and get no response whatsoever from your furnace, air conditioner, or heat pump, it could mean the thermostat is bad.

What are the symptoms of a bad thermostat?

Watch for These 9 Signs of a Thermostat Going Bad
  • The screen is dead. ...
  • The actual temperature doesn't match the display. ...
  • Your AC or heater is stuck on. ...
  • Your heating and cooling won't turn on. ...
  • Your HVAC is short cycling. ...
  • Scheduled settings stop working. ...
  • Nothing happens when you adjust the settings. ...
  • Temperatures shift.

Can a thermostat last 20 years?

On average, thermostats tend to last around 10 years with proper maintenance and care. That said, if it's been more than a decade since you installed a new thermostat, it's likely time to replace your current unit. Older models may become outdated or require more frequent repairs due to wear and tear over time.

What is the life expectancy of a home thermostat?

On average, most thermostats last about 10 years, depending on the model, usage, and proper maintenance. However, many people decide to replace their unit sooner to take advantage of new energy-saving technologies.

Can a low battery in a thermostat affect the furnace?

Yes, a dying battery in your thermostat can have an impact on your HVAC system. If your thermostat's battery is low, it can cause your HVAC unit to function erratically or potentially not at all. Your thermostat plays a huge role in how your HVAC unit functions as it regulates the temperature of your system.

Will my furnace still work if my thermostat is not working?

An HVAC system needs power to operate, so if it cannot start, you will be stuck with a thermostat that does not work. If so, ensure your furnace switch is on and your HVAC circuit breaker is set correctly.

How do I know if my Honeywell thermostat needs to be replaced?

Signs that You Need to Replace Your Thermostat

Your HVAC system keeps cycling on and off irregularly. Registering wrong temperatures. High energy bills. Inconsistent temperatures through the house.

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