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Heat Pump Won’t Cool Your House? Let’s See What’s Wrong!


As spring unfolds and temperatures start to climb, you might find yourself switching your heat pump from heating to cooling mode, only to discover that it’s not cooling your house effectively, or worse, not switching modes at all. At Hall’s HVAC, we understand how frustrating this can be, especially when you’re looking forward to a comfortable, cool home. Here are some common issues that could be causing your heat pump troubles, and why sometimes, calling a professional like us for heat pump repair in Shreveport is your best course of action.

1. Broken Reversing Valve

One of the most common reasons a heat pump fails to switch from heating to cooling mode is a faulty reversing valve. This valve changes the direction of the refrigerant, which allows the system to switch between heating and cooling. If it’s stuck or broken, your system will stay in one mode. This issue is not only common but also a complex one, requiring professional expertise to diagnose and fix. If you suspect your reversing valve is malfunctioning, it’s time to call in the pros.

2. Loss of Refrigerant

Refrigerant is the lifeblood of your heat pump; it facilitates the transfer of heat in and out of your home. A loss of refrigerant due to leaks or age can significantly decrease the efficiency of your system. If your heat pump is running but not providing sufficient cooling, low refrigerant levels could be the culprit. Handling refrigerant requires special training and certification, so this is a repair that requires skilled technicians.

3. Malfunctioning Thermostat

Sometimes the issue might be as simple as a malfunctioning thermostat. If your thermostat is not calibrated correctly or malfunctioning, it won’t send the right commands to your heat pump. This could mean your heat pump doesn’t kick on when it should, or it continues to heat when it should cool. Before calling a professional, you might want to check if your thermostat settings are correct or try replacing the batteries. If the problem persists, the thermostat might need to be repaired or replaced by a technician.

4. Clogged Air Filter

A clogged air filter can restrict airflow, severely diminishing your heat pump’s efficiency and its ability to cool your home. Homeowners can easily check and replace air filters themselves. We recommend checking your filter every month, especially during seasons of high use, like winter and summer. If you find it dirty, replace it with a new one to improve air flow and indoor air quality.

5. Aging Heat Pump

Like any other appliance, heat pumps have a limited lifespan. Typically, a heat pump is expected to last about 10–15 years. If your unit is approaching or has surpassed this age range and is experiencing frequent breakdowns or inefficiency, it might be time to consider a replacement. An aging system can cost more in repairs and energy bills than the price of a new, more efficient unit.

When to Call a Professional

While some issues like a dirty air filter can be a quick fix, others such as a broken reversing valve, loss of refrigerant, or a faulty thermostat require professional intervention. At Hall’s HVAC, we’re equipped with the tools, training, and expertise to diagnose and resolve all types of heat pump problems. Remember, attempting to fix refrigerant issues or internal mechanical faults on your own can lead to more significant problems or void your warranty. If your heat pump isn’t cooling your home effectively, don’t wait. Contact us to schedule an inspection. 

Hall’s Heating, Air Conditioning & Refrigeration: Call the doctor of home comfort today.

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