Troubleshooting a Heat Pump That's Running Constantly in Andover

A heat pump that runs non-stop isn't just annoying—it’s a warning sign. When a system doesn’t cycle off like it should, that can lead to rising energy use, early wear on the unit, and uneven temperature control in your Andover home. This issue becomes especially frustrating during the warmer months, when your heat pump shifts into cooling mode and still won’t shut off. Understanding what causes the system to run continuously can help prevent expensive repairs and keep your comfort level steady.

Sometimes the problem is small, like a setting that was overlooked. Other times, it’s linked to worn parts or blockages that keep the system from working the way it should. No matter the cause, it’s important to address this problem before it turns into costly damage or system failure. Let’s start by looking at a few of the most common reasons your heat pump might be running without a break.

Common Causes of a Continuously Running Heat Pump

The most common problems that lead to an overactive heat pump are often linked to either airflow, temperature control, or the condition of the system’s components. If your heat pump in Andover keeps running around the clock, take a closer look at the following factors:

1. Thermostat Settings Are Off

Sometimes the simplest answer is the right one. If your thermostat was accidentally set to "on" instead of "auto," the fan will run constantly regardless of the temperature inside your home. Also, if the temperature setting is too low in summer or too high in winter, your unit could be running nonstop just to keep up with unrealistic goals.

2. Dirty Filters or Blocked Vents

Airflow plays a major role in how long your system needs to run. When filters are dirty or vents are blocked, your heat pump will take much longer to reach the target temperature or may never reach it at all. This keeps the system running longer than it normally should and can cause overheating or coil freezing.

3. Refrigerant Issues

Low refrigerant levels can keep your heat pump from transferring heat effectively. As a result, the system stays on longer trying to meet the temperature setting but struggles because it’s not circulating enough refrigerant to cool or heat the air properly. This calls for a trained technician to inspect and recharge your system safely.

4. Faulty Components

Worn contactors, malfunctioning sensors, and damaged control boards can all cause your heat pump to ignore shutoff signals. Over time, parts wear out and begin to misread temperature levels or fail to trigger the stop cycle. These types of breakdowns typically don’t resolve on their own and need professional repair.

At a glance, it may be hard to tell exactly what's causing the issue. However, knowing these common triggers provides a strong starting place for narrowing it down. Once you recognize the likely source, it’s easier to know whether a setting can be adjusted or if professional repair is needed.

Steps to Troubleshoot a Constantly Running Heat Pump

If you’ve noticed your heat pump is non-stop, the next step is to run through a shortlist of troubleshooting checks. These can help rule out simple issues and may resolve the problem. Below are some ways you can safely inspect the system before calling for help:

- Check the thermostat setting. Make sure it's on "auto" instead of "on." This allows the system to cycle off when the right temperature is reached.

- Inspect and replace the air filter. A clogged filter slows air movement, making the pump work harder.

- Clear vents and return grilles. Move furniture, rugs, or anything else blocking airflow around the house.

- Listen for odd noises. Clicking or grinding sounds from the unit can indicate internal parts are struggling or failing.

- Evaluate outdoor unit airflow. Make sure the exterior portion of the system is free from leaves, branches, or dirt buildup that can reduce performance.

- Note the temperature pattern. If the home never cools down or heats up to the correct setting, there’s likely a deeper system-level issue at play.

These tips may help address easy-to-correct situations, especially settings or dirty components. However, if your system keeps running without real change, it’s likely time for a more detailed inspection and repair by experienced HVAC technicians. Continuous operation that doesn’t respond to basic troubleshooting can mean there are bigger mechanical issues going on, which usually require professional attention.

When to Call Our Professionals

There are situations where checking the thermostat or replacing a filter just won’t fix the issue. If your heat pump in Andover continues to run nonstop even after basic steps have been taken, it’s time for a more thorough inspection. Continuous operation, strange noises, weak airflow, or uneven cooling in different rooms are not signs to ignore. These problems point to internal failures or mechanical issues that can’t be seen without the right tools and training.

Here’s when calling our professionals becomes necessary:

- Your heat pump runs all day and night, regardless of outdoor temperature.

- You’ve already checked the thermostat and filters with no results.

- Unusual sounds or smells are coming from the outdoor or indoor unit.

- The heat pump is blowing air, but the temperature never reaches your setting.

- Your energy bills are higher even while comfort levels are lower.

Our technicians are trained to spot issues that go undetected by quick checks. For example, a homeowner once called us about a heat pump that ran nonstop but didn’t cool the home enough. After a full inspection, we found a refrigerant leak that had developed behind the evaporator coil. That was something no surface-level troubleshooting would’ve revealed. Professional service in these cases doesn’t just stop the constant running. It also protects your system from long-term damage.

The longer a heat pump runs with unresolved problems, the more stress it places on key components like motors, compressors, and expansion valves. Over time, this leads to major repairs or full system replacement that could’ve been avoided. Getting help early keeps your equipment at peak performance and maintains consistent temperatures inside your home.

Preventive Maintenance Tips for Andover Homeowners

Preventing future issues starts with regular care. Heat pumps are built to run efficiently, but without ongoing tune-ups, even the best systems wear down. More often than not, constantly running units are linked to clogged filters, airflow problems, and skipped maintenance.

To keep your heat pump from overworking:

- Replace or wash air filters every 1 to 3 months, depending on usage.

- Have vents and ductwork inspected to confirm airflow isn’t restricted.

- Keep the outdoor unit free of leaves, dirt, or debris throughout the year.

- Schedule maintenance at least once a year, preferably before summer starts.

- Keep an eye on your energy bills. Unexpected increases may signal a system strain.

Seasonal service gives your system the best chance to operate efficiently without running too long. Our technicians focus on small issues that build up slowly and ensure your unit is clean, lubricated, and working as it should. With warm weather coming up in Andover, now is a good time to check if your heat pump is ready to handle those higher temperatures without constant operation.

Ensuring Year-Round Comfort in Andover

A heat pump that never turns off can leave homeowners feeling frustrated and uncomfortable. Often, it begins with something small, like a dirty filter or thermostat error, but ignoring it can quickly lead to larger system strain. Taking action early reduces unnecessary wear, lowers utility bills, and keeps your space feeling consistent through each season.

Whether your heat pump has been running constantly for a few days or it’s been going non-stop for weeks, it’s worth getting to the root cause. Trouble with cooling in the warmer months should never be shrugged off. Addressing the issue now ensures your home stays cool and your system keeps working as it should without excessive run time or costly damage. For repairs, maintenance, or a full inspection, working with qualified technicians is the safest and most effective next step.

Maintain uniform comfort in your Andover home by addressing heat pump issues before they lead to larger problems. Trust MJB Heating & Cooling to help you keep your system running efficiently, and if you need support from an HVAC company in Andover, our professionals are ready to ensure your equipment receives the care it deserves. For a quick estimate or to book a service visit, please contact us today.