Heat pumps are an excellent heating and cooling solution here in Freeport, FL. They provide high efficiency and phenomenal comfort. However, like all machines, heat pumps can and do malfunction. Often, they’ll get stuck in either heating or cooling mode, or stop heating or cooling altogether. When that happens, count on The Green Air Group to solve the problem. We’re the local leader in heat pump repair and maintenance services. And we service all makes and models. Here are some common causes of a heat pump that won’t heat or cool.
How a Heat Pump Works
Heat pumps use the same refrigeration cycle as a conventional AC. To power it, they contain a refrigerant, an indoor coil, an outdoor coil, an expansion valve, and a compressor. However, they also feature a reversing valve that allows bidirectional operation. In cooling mode, a heat pump extracts heat from your home’s air and expels it outside. In heating mode, it collects heat from outdoor air and transfers it indoors.
Common Causes of a Heat Pump Not Heating
There are a handful of common reasons that a heat pump might stop heating. One of the most common reasons a heat pump fails to heat is an incorrectly set thermostat. It’s easier than you might think to switch your thermostat to cooling mode accidentally. It’s also possible that your thermostat is malfunctioning and causing problems with your heat pump. If your thermostat is over 10 years old, there’s a decent chance it needs replacement.
Another reason a heat pump might not heat is insufficient airflow. That can result from having too many vents being closed or blocked in your home. Heat pumps produce hot air at 90°F to 110°F. To keep your home warm, they typically run for long cycles. Even a slight airflow restriction can hamper your heat pump’s ability to maintain the indoor temperature you want.
There are also a few types of system malfunctions that can cause a heat pump not to heat. One is a faulty reversing valve. If your heat pump’s reversing valve sticks or fails, it can’t switch to heating mode. As a result, it will blow cool or cold air. Occasionally, our technicians can solve the problem by using a magnet to free the valve. Otherwise, replacing the faulty reversing valve may be your only option.
The most serious reason a heat pump might not heat is a refrigerant loss. If your heat pump’s refrigerant system leaks, it will gradually lose heating capacity. The problem will be most obvious in heating mode. Typically, low refrigerant levels will cause your heat pump to cycle into frequent defrost cycles. If you start seeing persistent ice buildup on your outdoor unit, schedule repairs immediately.
Common Causes of a Heat Pump Not Cooling
If your heat pump won’t cool, there are some additional causes to look for. Of course, a faulty thermostat or improper thermostat settings can also prevent a heat pump from cooling. And a refrigerant leak may also cause the problem. However, in cooling mode, a refrigerant leak may cause icing of the indoor coil instead. You can’t inspect the indoor coils yourself. However, there are some ways to detect the problem. One telltale sign is a lack of water dripping from your heat pump’s condensate drain. Another is a sharp drop-off in airflow from your vents.
Another problem that can cause your heat pump to stop cooling is an issue with its outdoor unit. If the outdoor coil becomes too dirty, it can’t efficiently dissipate heat to the outdoors. The same applies if debris or detritus accumulates around the outdoor unit. That restricts airflow through the outdoor unit, preventing efficient heat transfer into the air. Another potential cause is an electrical issue preventing your heat pump’s compressor from operating.
Issues That Affect Both Heating and Cooling Performance
Some heat pump problems will harm both heating and cooling performance. One is a dirty air filter. That restricts airflow through your heat pump’s indoor unit, regardless of the mode. An obstructed outdoor unit can also cause issues in heating mode, which is most noticeable at lower temperatures. Additionally, contactor or capacitor failures may restrict the speed or operation of your outdoor unit’s fan. That will prevent your heat pump from heating or cooling. And a thermostat that starts sending erroneous signals to your heat pump may affect both heating and cooling.
24/7 Emergency Service
850-608-3065When It’s Time to Call a Professional
Anytime your heat pump isn’t keeping your home comfortable, and you can’t figure out why, you should contact The Green Air Group. You should also call us immediately if you suspect a frozen coil or refrigerant leak. Those can cause significant damage to your heat pump if left unaddressed. You should also contact us if your heat pump starts making odd noises or you’re experiencing unexplained jumps in your energy bills. The Green Air group offers heat pump repair, including emergency HVAC services when necessary. We repair all makes and models of heat pumps, so you can count on us to resolve any issue.
FAQs
We have plenty of experience with heat pumps, having served the area for over a decade. Here are some frequently asked questions about them, along with their answers.
Why Is My Heat Pump Blowing Room Temperature Air?
A heat pump may blow room temperature air for several reasons. One is if its compressor fails. Another is if the outdoor unit fan, contactor, or capacitor fails. Incorrect thermostat settings and airflow restrictions can also cause similar problems.
Can Low Refrigerant Cause Both Heating And Cooling Issues?
Yes, your heat pump uses its refrigerant to transport heat energy. If it runs low on refrigerant, it can’t heat or cool effectively. The problem begins with reduced heat-transfer efficiency and can end with damage to your heat pump’s compressor.
How Often Should Filters Be Checked To Avoid Heat Pump Problems?
Most heat pumps need a new air filter roughly every 90 days. When replacing your heat pump’s air filter, it’s critical to select a filter with the same dimensions and MERV rating. If you install the wrong filter, it may reduce your heat pump’s performance and cause unnecessary wear.
What Should I Check Before Calling An HVAC Technician?
Before calling a technician, the first thing to check is your thermostat. If it appears to be working and set correctly, check your heat pump’s air filter. If the air filter isn’t dirty, ensure nothing is obstructing your heat pump’s outdoor unit and that its fan is running at full speed.
If you need help with your home’s heat pump, contact The Green Air Group for professional heat pump repair and diagnostics. You can schedule a service visit right from our website, making the process fast and easy.
