Why Is My Heat Pump Running Constantly in Winter?
editWhen cold weather sets in and the chill cuts through the air in Middletown, OH, your home’s heating system works hard to maintain a cozy environment. However, if you find your heat pump working tirelessly, it might raise concerns about its efficiency and potential heat pump repair issues that need attention. In this blog, Robinson Heating and Air Conditioning, Inc. explains:
- Reasons why your heat pump is running constantly during winter
- Troubleshooting strategies
- When it’s time to consider professional repairs
How Your Heat Pump Works
A heat pump is a type of HVAC system that can keep your home comfortable in all seasons without needing separate heating and cooling systems. Unlike traditional heating systems, air source heat pumps transfer heat from the outside air to the inside during winter. This heat exchange process allows the electric heat pump to maintain a comfortable temperature within your home. In the summer, heat pumps act as an air conditioner, extracting heat from indoors and expelling it outside in cooling mode.
Why Does My Heat Pump Run Constantly?
If you’ve noticed your heat pump running non-stop, it’s easy to assume something’s wrong. But before you panic, know that in some cases, this is completely normal. However, there are times when the constant operation may signal an underlying issue that needs a heat pump repair from our HVAC contractors.
Heat Pump Running Continuously When It’s Cold Outside
During mild weather, a heat pump’s heating cycle usually lasts anywhere from 10 to 20 minutes, with two or three cycles running per hour. However, once outdoor temperatures drop below 47°F, the heating capacity of a heat pump system starts to decline and the system is unable to put out as much heat at these lower temperatures. Actual losses in heating capacity will vary based on the age and SEER rating of the heat pump.
For example, a 3-ton 15 SEER heat pump puts out 34,400 BTUs (British thermal units) of heat per hour when the outdoor temperature is 47°F. At 20°F, heating output drops to 20,800 BTUs. If outdoor temperatures dip to 0°F, the heating output is only 11,800 BTUs.
As the outside air gets colder, heat pumps lose efficiency. Here in Southwest Ohio, where our winter temperatures regularly get down to 35-40°F or lower, it’s not unusual that your heat pump is running constantly because it must operate for longer periods due to lost heating capacity.
In these temperatures, heat pumps are no longer the most energy efficient way to heat your home. If you have an auxiliary backup heating system, such as a gas furnace or electric heat strips, these will kick on to supplement the heat pump and keep your home warm.
So, a heat pump running constantly isn’t abnormal during extremely cold weather. While it’s not typically something to worry about in terms of heat pump repair needs causing this issue, it does indicate that the system is no longer able to run efficiently.
Heat Pump Running Constantly During Mild Weather
However, if you notice that your heat pump runs continuously when outdoor temperatures are more mild, this can be an indication of a problem. HVAC repair issues may include:
Lack of HVAC Maintenance
A lack of regular maintenance is one of the most common reasons a heat pump might run constantly. Over time, components like air filters, coils, and fans accumulate dirt and debris, restricting airflow and reducing efficiency. Without routine cleaning and inspection, these blockages force the system to work harder to achieve the desired temperature.
Insufficient Refrigerant Levels
Low refrigerant levels can hinder the heat exchange process, forcing the heat pump to run continuously in order to keep your home at the desired temperature. A refrigerant leak might be the culprit, necessitating professional attention.
Thermostat Issues
If the thermostat isn’t accurately reading the indoor temperature or fails to communicate properly with the heat pump, it may keep signaling the system to operate, even after your home has reached the desired temperature. Common issues include faulty wiring, dead batteries, or a miscalibrated sensor, all of which can disrupt normal operation, leading to excessive energy use, unnecessary wear and tear on the system, and heat pump repair problems.
Defrost Cycle
When the heat pump detects frost accumulation on the outdoor unit, it temporarily switches to a defrost cycle, diverting the system into cooling mode to remove the frost on the outdoor coil. As the heat pump defrosts, the auxiliary heat source, such as electric heat strips or a gas furnace, activates to prevent cold air from entering the home. This temporary shift can create the impression that the heat pump runs constantly.
Malfunctioning Reversing Valve
The reversing valve is responsible for switching the heat pump between heating and cooling modes. If this component malfunctions, the heat pump may get stuck in one mode and run continuously without cycling properly. Diagnosing and repairing a reversing valve issue requires professional expertise.
Faulty Sensors or Electrical Components
Sensors and electrical components within the heat pump ensure it operates efficiently and cycles on and off as needed. If these parts malfunction, the system may run non-stop. A heating and air conditioning services technician can inspect and repair any faulty components to restore proper functionality.
Undersized Heat Pump
If your heat pump is too small for your home’s heating or cooling needs, it will struggle to reach and maintain the set temperature. This can cause the system to run constantly as it attempts to meet demand. Our professional HVAC contractors can evaluate your system to determine if it’s properly sized for your home. If it’s not, you’ll need to install a new heat pump to stop this issue.
Aging Heat Pump
Older heat pumps naturally lose efficiency over time, leading to ineffective heating. If your system is nearing the end of its lifespan (typically 10–15 years), it may run continuously because it’s no longer able to meet your home’s heating or cooling needs. In this case, a heat pump replacement is usually the best solution.
Troubleshooting Your Heat Pump Before Calling for Heating & Cooling Services
If your heat pump won’t stop running, there are a few troubleshooting steps you can take to identify and potentially resolve the issue. While some problems may require professional assistance, others can often be fixed with simple adjustments or maintenance. Here’s a step-by-step guide to help you troubleshoot before you call us for heat pump repair:
1. Check Thermostat Settings
Check your thermostat settings and make sure they are appropriate. A common mistake is setting the thermostat too high instead of at the desired temperature in hopes of heating up the home faster; however, this doesn’t actually make your home warmer any sooner than if the thermostat was set at the desired temperature.
Many people forget to turn the temperature setting back down once the home reaches the desired temperature, causing the heat pump to run constantly to meet the high temperature demand.
2. Check Your Air Filter
Over time, filters can accumulate dust and debris, obstructing the airflow and causing heat pump systems to strain. As a result, your heat pump will be forced to run longer to deliver the appropriate amount of heat. If your heat pump is running constantly, inspect and replace the air filter to ensure optimal performance.
3. Check for Insulation and Air Leaks
Poor insulation and air leaks in your home can result in heat loss, prompting the heat pump to compensate by running constantly. Assess your home’s insulation and check for air leaks in key areas such as windows and doors. Proper insulation and air sealing not only enhance comfort but also reduce the workload on your heat pump which improves its energy efficiency.
4. Look for Ice or Frost
Ice or frost buildup on the outdoor unit is often a sign of a defrosting issue. While occasional frost is normal in cold weather, excessive or constant ice indicates a problem. Make sure the defrost cycle is functioning correctly (listen for the unit switching to defrost mode). If ice continues to form on the unit after defrosting, call our Middletown heating technicians to inspect the defrost system or refrigerant levels.
5. Reset the System
Sometimes, a simple reset can resolve issues with your HVAC system, like constant operation. To reset your unit, turn off the heat pump at the thermostat and the circuit breaker. Wait a few minutes, then turn everything back on. Monitor the system to see if it begins cycling properly.
When to Seek Professional Heat Pump Repairs
If you notice your heat pump running constantly yet outdoor temperatures are above 47°F, troubleshoot the system and see if it puts a stop to the issue. If you’ve tried these steps and you still find your heat pump runs constantly, there may be system problems that warrant the expertise of professional heating and air conditioning repair technicians.
- Refrigerant Leaks: If you suspect low refrigerant levels or notice a refrigerant leak, seek professional assistance. Technicians can identify and repair leaks, ensuring the proper functioning of your heat pump.
- Electrical Issues: Electrical malfunctions pose a risk and should be handled by experienced technicians. If you encounter frequent tripped circuit breakers or suspect wiring problems, contact our skilled technicians promptly.
- Component Failures: When critical components such as the compressor or reversing valve fail, it’s time for professional intervention. Attempting DIY repairs on these components can lead to further damage.
The Local HVAC Company You Can Count On
When your heat pump runs constantly, Robinson Heating and Air Conditioning, Inc. is here to help. Our experienced heat pump and furnace repair technicians will conduct a thorough inspection to pinpoint the exact cause of the issue, whether it’s a dirty filter, refrigerant leak, malfunctioning thermostat, or any other underlying problem. Using advanced diagnostic tools and their expertise, they’ll quickly identify what’s preventing your system from cycling off as it should.
Once the source is identified, we’ll perform the necessary HVAC repairs with precision and care, ensuring your heat pump operates efficiently and reliably. As Middletown, Ohio’s trusted HVAC provider, we’re committed to restoring your comfort and peace of mind, so your home stays cozy throughout the winter months without the added stress of a constantly running system.
Invest in Professional Maintenance for Your Heat Pump
Heat pumps work year-round to both heat and cool your home so they experience more wear and tear than traditional HVAC systems. Scheduling professional maintenance for your heat pump twice a year—once in the spring and again in the fall—helps keep your system operating at peak efficiency levels and prevents it from running constantly.
During a maintenance visit, a trained technician will inspect, clean, and tune up all components of your heat pump, including the air filter, coils, refrigerant levels, and electrical connections. They’ll also check for any hidden issues, like leaks or failing parts, that could cause the system to overwork itself.
By addressing these problems early, biannual maintenance helps prevent your heat pump from running longer than necessary, so you save money on energy bills and reduce the risk of costly heat pump repairs. Consistent care also extends the lifespan of your heat pump, ensuring it provides reliable comfort for years to come.
Don’t wait for a problem to arise—make professional maintenance a regular part of your home care routine by joining our Preferred Customer Maintenance Agreement. This program ensures your heat pump gets the care it needs on a consistent schedule, with added benefits like priority service, discounted repairs, and peace of mind knowing your system is always running at its best.
Schedule Service Today for Heat Pump Repair
A heat pump running constantly in winter can stem from various factors, ranging from minor issues like thermostat settings to more complex problems such as refrigerant leaks or component failures. While homeowners can address some issues through troubleshooting, professional heat pump repairs become imperative for more intricate problems.
If you find your heat pump running constantly despite your efforts, it’s time to reach out to Robinson Heating and Air Conditioning, Inc. for heat pump repair. Our team of experienced technicians diagnoses and fixes heat pump issues so that your home stays warm and comfortable throughout the winter season. Contact us today for reliable heat pump repair services.