How much does a thermostat cost to fix?

Author: Isom Schaefer  |  Last update: Friday, January 30, 2026

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. However, installing a brand-new thermostat is more involved and, therefore, more expensive.

How much should it cost to replace a thermostat?

The average cost of a new thermostat, including installation, ranges in price from $50 to $500 or more based on several factors including the type of thermostat, labor costs, the complexity of the installation, and more.

What are the symptoms of a bad thermostat?

What Are the Signs of a Bad or Broken Thermostat?
  • The AC or Furnace Won't Come On. ...
  • The HVAC System Won't Turn Off. ...
  • The Thermostat Is Unresponsive. ...
  • The HVAC System Short-Cycles. ...
  • The Room Temperature Doesn't Match the Thermostat Setting. ...
  • The Programmed Settings Reset Themselves. ...
  • Check and Adjust the Settings.

How long does it take a mechanic to replace a thermostat?

Car thermostat replacement time is 30 to 60 minutes, depending on the make of the car. It will cost you around $190 to $350, including labor. Thermostat repairs usually take more time, requiring extra time to diagnose and analyze the vehicle's thermostat. It can take up to 2 hours.

How much does it cost for an electrician to install a thermostat?

The cost of thermostat installation can vary depending on several factors, including the type of thermostat, the complexity of the installation, and your location. On average, homeowners can expect to pay anywhere from $50 to $200 for professional installation by an electrician.

How Much Does It Cost To Fix A Thermostat? - LearnToDIY360.com

Can I replace my 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.

Do I need an electrician to replace a thermostat?

Yes, many smart thermostats are designed for DIY installation, and manufacturers typically provide step-by-step guides and videos. However, if your HVAC system is older or lacks proper wiring (like a C-wire), the installation might become more complex, and you may need professional help.

What is the lifespan of a thermostat?

The Lifespan of a 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.

What happens if you don't fix thermostat?

Regardless of the type of thermostat, failure is a huge safety concern and must be avoided at all costs. When the thermostat begins to fail, your engine can overheat. If the problem is left unchecked, your engine will boil over, leading to costly repairs.

How can I tell if I need to replace my thermostat?

Signs You Need a New Thermostat
  1. Heating or cooling system will not turn off or on.
  2. The temperature reading is incorrect.
  3. Recent spike in your energy bill.
  4. Frequent temperature fluctuations.
  5. Thermostat is 10 years old or older.

Can a thermostat go bad without overheating?

Erratic changes in temperature

If this happens, it is probably due to temperature confusion caused by the failing thermostat. One of the bad thermostat symptoms related with the temperature is overcooling. It's the opposite of overheating: the engine never reaches operating temperature.

Will you get a code if your thermostat is bad?

P0128 is an extension of OBD-II code P0 which indicates a problem with your car's coolant thermostat.

Can a thermostat cause a high electric bill?

Your thermostat may not seem like it's part of your air conditioning system, but a faulty one can still drive up your electric bills. A faulty thermostat can cause your air conditioner to run continuously and may also cause it to cycle too often, using too much energy.

What is the life expectancy of a car thermostat?

A car thermostat is designed to last a long time – typically around 100,000 miles or 10 years. However, various factors can impact its lifespan. First, driving conditions play a role. If you regularly drive in hot weather or stop-and-go traffic, your thermostat may suffer additional stress.

Who fixes a broken thermostat?

There are multiple factors at play when you have a thermostat issue. Only an HVAC professional can diagnose the root of AC repair problems and offer technical solutions for them.

How do I know if I have a bad thermostat?

One of the most obvious signs you need to replace your thermostat is when it doesn't do anything. If your thermostat display doesn't light up or respond when you press buttons or try to change the settings, you may have to replace it. Before assuming you have a broken thermostat, make sure it has fresh batteries.

How much is a new 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.

Can a car run with no thermostat?

When you drive your car without a thermostat, some of the required temperatures are not met, forcing the ECU to balance the emissions on a "cold engine" all of the time, even if it has been running all day. Thermostat Replacement - A faulty thermostat can wreak havoc on the entire vehicle.

What causes a thermostat to fail?

Power problems are one of the most common causes of thermostat failure. Whether your thermostat is wired to the mains or runs on batteries, a lack of power will stop your thermostat from accepting commands and communicating with your HVAC system.

Is it easy to replace your own thermostat?

Upgrading to a new thermostat can feel daunting, but with a systematic approach, it's a manageable DIY project. This guide will walk you through each step, ensuring a smooth and successful installation.

How to reset a thermostat?

Most modern thermostats will have a clearly marked reset button inside the panel. It's usually small and recessed, so you might need a pointed object like a paperclip to press it. For those wondering specifically how to reset air conditioner thermostat models, the process is generally the same.

How many hours does it take to replace a thermostat?

Installation typically takes about 1 hour.

How much does an electrician charge to replace 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.

Who do I call for a new 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.

Who would repair a thermostat?

Booking thermostat replacement or repair with Housekeep

They can help with any thermostat repairs - whether your thermostat is reading the wrong temperature, needs new batteries or isn't heating your home properly.

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