Why Does My Thermostat Keep Resetting Itself?

HVAC

Blog
// Posted by Crossville Heating and Cooling, Inc.

Your thermostat is the control center of your HVAC system, ensuring your home stays comfortable year-round. But if it keeps resetting, changing temperatures on its own, or turning off unexpectedly, it could signal a bigger issue.

Key Takeaways

  • Power Issues: Dead batteries, faulty wiring, or power surges can cause frequent resets.
  • Programming Glitches: Smart thermostats may have scheduling conflicts or software issues.
  • External Factors: Utility energy-saving programs or multiple users can override settings.
  • Maintenance Needs: Dirt and debris can interfere with accurate temperature readings.

Common Reasons Your Thermostat Resets Itself

Power & Connectivity Issues

  • Power outages or surges – Even brief interruptions can cause resets.
  • Dead batteries – Older thermostats may shut down due to low battery power.
  • Faulty wiring – Loose connections can lead to intermittent power loss.
  • Compatibility issues – A newly installed thermostat might not match your HVAC system.
  • Dust & debris – Buildup can affect sensors, leading to incorrect temperature readings.

Temperature Changes & Scheduling Conflicts

  • Hold settings – If stuck in a "hold" mode, your thermostat may override its schedule.
  • Daylight savings time – Some thermostats require manual time adjustments.
  • Smart home features – Automated settings can adjust temperatures based on occupancy.
  • Utility energy-saving programs – Some thermostats respond to external energy-saving requests.
  • Multiple users – If others have app access, they may unknowingly adjust the temperature.

Conclusion

Don’t let a faulty thermostat disrupt your comfort or drive up your energy bills. At Crossville Heating & Cooling, Inc., the fastest in town since 1982, our skilled technicians can quickly diagnose and fix the issue, ensuring your HVAC system runs smoothly.  Call 931-484-0004 today for fast, reliable thermostat service!

HVAC Technician installing a electric heat pump
About Crossville Heating and Cooling, Inc.
Locally owned and operated since 1982, Crossville Heating & Cooling, Inc. serves Middle and East Tennessee with heating, air, plumbing, and generator services. We provide fast, eco-friendly solutions for homes and light businesses — your trusted comfort partner for over 40 years.
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FAQ

What can cause my furnace to short cycle?

Short cycling can happen if your air filter is dirty or air vents are blocked. Make sure to change the air filter often and keep all vents open. This helps with airflow and stops overheating.

FAQ

What are the benefits of upgrading my HVAC system?

Upgrading your HVAC system brings many benefits. It boosts energy efficiency and improves air quality. It also makes your home more comfortable and helps control the temperature better.

FAQ

What is a mini split heat pump?

A mini split heat pump is a versatile HVAC system. It heats and cools your home efficiently. It has an outdoor unit and indoor units connected by lines. This system lets you control the temperature in different areas without ducts.

How do I troubleshoot issues with my thermostat?

First, check that your thermostat is set right and the temperature is correct. Change the batteries and reset it as the maker suggests. If it still doesn't work, you might need a pro to fix or replace it.

When should I consider replacing my HVAC equipment?

If your HVAC system is over 15 years old, it's time for a change. Newer systems are more energy-efficient and cost less to run.

How do mini split heat pumps work?

Mini split heat pumps move heat between indoor and outdoor units. In cold months, it takes heat from outside and brings it inside. In warm months, it does the opposite for cooling.

What are the signs of a cracked heat exchanger?

A cracked heat exchanger can let harmful gases like carbon monoxide into your home. Look out for your heater stopping suddenly and a smell like a funeral home. If you see these signs, get out of the house fast and call for help.

How can HVAC upgrades improve indoor air quality?

Upgrades like high-efficiency air filters and air purifiers help remove pollutants and allergens. This makes the air in your home healthier to breathe.

What are the key advantages of mini split heat pumps?

Mini splits are energy-efficient and offer zoned temperature control. They don't need ducts and can heat and cool your home with one system. They're great for homes without ducts or areas with uneven temperatures.

What should I do if my furnace isn't powering on?

It might be a tripped circuit breaker. Just flip the breaker for your HVAC unit back to "ON" to fix the power. If it still doesn't work, you'll need a pro to check it out.

What are the benefits of installing a smart thermostat?

Smart thermostats make your HVAC system work better and smarter. They connect to Wi-Fi, adjust temperatures automatically, track energy use, and let you control it from anywhere. This saves energy and makes your home more comfortable.

How do mini split heat pumps compare to traditional HVAC systems in terms of energy efficiency?

ENERGY STAR certified mini splits use up to 60% less energy than electric radiators. They also cut greenhouse gas emissions by more than 4,500lbs over their life. This makes them a green choice for heating and cooling.

When should I call for emergency heating repair services?

Call for emergency heating repair if your heater stops working at night or on a weekend. Being without heat in cold weather is risky and can cause hypothermia. A pro can quickly find and fix the problem to warm your home up again.

How can upgrading ductwork improve my HVAC system?

Upgrading ductwork makes your HVAC system more efficient. It ensures air reaches every room and reduces air leaks. This means better heating and cooling throughout your home.

Can mini split heat pumps effectively heat a home in cold climates?

Yes, new ENERGY STAR certified mini splits work well in cold climates. They have advanced compressors and refrigerants for better performance in low temperatures. So, they can keep your home warm even on freezing days.

What are some common heating system problems I may experience?

You might see your system not turning off, uneven heating, or cool air from the vents. These problems can come from thermostat issues, airflow problems, or fuel supply issues. A pro HVAC technician can figure out and fix the issue for you.

What is an HVAC zoning system and how can it benefit my home?

An HVAC zoning system lets you control temperatures in different areas of your home. This means each room stays at the perfect temperature, saving energy and improving comfort.

How do mini splits provide zoned heating and cooling?

Mini splits let you control the temperature in each room. They don't heat or cool the whole house at once. By installing multiple indoor units, you can set different temperatures in different areas, saving energy and money.

What is an energy recovery ventilator (ERV) and how can it improve my HVAC system?

An ERV is a device that moves heat and moisture between fresh and stale air. This improves air quality and reduces energy use, cutting down on your bills.

What are some important considerations when installing a mini split heat pump?

Installing a mini split right is key for its performance. Place indoor units for good air flow and coverage. The outdoor unit should have clear airflow and be easy to reach for maintenance. Consider looks, access, and drainage when placing the outdoor unit.

How can upgrading home insulation impact my HVAC system?

Good insulation stops heat from escaping or entering your home. This means your HVAC system works less hard, saving energy and money.

How do I choose the right mini split heat pump for my home?

Look at energy efficiency, features, and brand reputation when picking a mini split. A professional HVAC contractor can help match the system to your home's needs for lasting efficiency.

HVAC Technician installing a electric heat pump
About Crossville Heating and Cooling, Inc.
Crossville Heating and Cooling, Inc. is a locally owned heating and air conditioning company that provides sales, service, and installation of any type of heating or cooling in your home or light commercial building.

Although the name Crossville Heating and Cooling, Inc. is new, Mr. Richard Gilmer has been in the business of keeping his neighbors comfortable since 1998. As our presence in the HVAC contractors industry has evolved, we decided to change the name of our business to better reflect our commitment to the Middle TN area.

Our core values include implementing economically friendly products and practices to better contribute to the health and home of our customers. We are EPA certified and ensure that all refrigerant is recycled and all equipment is disposed of as per environmentally-safe standards. Our service techs and installers are trained to conduct business with minimal disruption to your daily lifestyle so that the only impact we make is a positive one

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