If you’re more familiar with the traditional central air conditioner than you are with heat pumps, you might be surprised just how similar they are. However, there are some critical differences. To take top-notch care of your heat pump, it helps to have your questions answered. So here is a handy heat pump FAQ for you. Above all, remember that as a year-round HVAC system, it needs twice-a-year heat pump maintenance in Milton, WI, for the best performance. Here’s what you should know.
How Do Heat Pumps Work?
Just like an air conditioner, a heat pump system has an outdoor unit with a compressor in it. This pressurizes refrigerant so it will flow through a loop of coils, indoors and out. Refrigerant can soak up a great deal of heat as it changes state from a liquid to a gas. When it condenses back to a liquid, that heat gets released. This is how your heat pump or air conditioner can move heat from one area to another.
How Do Heat Pumps Switch Modes?
While an air conditioner only moves heat in one direction—from indoors to out—the heat pump can do more than that. By reversing the flow of the refrigerant, it can absorb outdoor warmth and carry it into your home. Don’t worry, it doesn’t have to be hot outside for the heat pump to warm your home. It can work well even at temperatures in the thirties because even that is warmer than the icy refrigerant.
In order to switch from one mode to another, your heat pump needs a component that air conditioners don’t have. It’s called the reversing valve, and it has a sliding part that opens or closes pathways for the refrigerant to follow. This usually works automatically, but what if it gets stuck in one mode?
Three things are needed for it to work properly: a signal from your thermostat, the electrical wiring between the thermostat and the reversing valve, and the solenoid (electromagnet), which applies the pressure to move the slider. If your heat pump won’t switch modes, an HVAC technician can determine what is causing your problem and get it fixed.
What Maintenance Do Heat Pumps Need?
An air conditioner, boiler, or furnace only works for about half the year. It needs yearly maintenance to work well and stay efficient. Because your heat pump does both heating and cooling, it runs much more of the year than a one-season system would.
How Can I Tell if My Heat Pump Needs Repair?
Other than refusing to switch modes, a heat pump’s warning signs will be the same as those you would notice if an air conditioner needs repair. Odd noises, such as rattling, buzzing, banging, or hissing, indicate that you need an appointment with an HVAC technician. Odd odors like chemicals, mildew, or vinegar are also cause for concern, as is any unsatisfactory performance or sharp increase in your electric bill.
Finally, keep an ear out for short cycling. Your heat pump’s heating or cooling cycles should be fairly lengthy, with equally lengthy breaks in between. Short cycling—the system turning on and off again every minute or three—means there’s a problem, and in the meantime, it’s using way too much energy trying to run! Get repairs promptly.
If you have any other questions about your heat pump, we’d love to have a conversation with you!
You can always count on 24-Hour Home Comfort Services, your heating and cooling specialists.