How a Heat Pump Cools Your Home

In Nashville, heat pumps can be a popular solution for heating and cooling your home.

They appear almost like an air conditioner. In fact, they operate in the same way during the summer. Since they have a reversing valve, they can move warmth in the opposite direction as well as add warmth to your house when temperatures drop.

Not sure if you have a heat pump or an air conditioner? Just track down the model number on the outdoor unit and look it up online. If you discover you use a heat pump, or you’re thinking about purchasing one, discover how this HVAC unit keeps homes comfy.

How Heat Pumps Work

Heat pumps depend on a refrigeration system like an air conditioner. Most can operate like a ductless mini-split, since they can heat and cool. Heat pumps have an indoor evaporator coil and an outdoor condensing coil. Refrigerant is moved through these coils to shift humidity. The outdoor unit also uses a compressor and is enclosed by metal fins that function as a heat sink to help transfer heat properly.

Summertime Cooling

When your heat pump is cooling, the refrigerant is in the evaporator coil. Air from within the house moves over the coil, and the refrigerant sucks out humidity. Wetness in the air also condenses on the coil, dripping into the condensate pan below and flows away. The resulting cold air moves through the ductwork and back into your house.

During this time, the refrigerant passes through a compressor on its way to the outdoor coil. This compresses the refrigerant, forcing it to get hotter. As it goes through the condensing coil, the exterior fan and metal fins help to discharge heat to the exterior. The refrigerant heads back indoors, moving through an expansion valve that cools it significantly, readying it to start the process from the start.

When your heat pump is replaced and maintained properly, you’ll get efficient cooling equivalent to a high-performance air conditioner.

Wintertime Heating

In heating mode, the heat exchange process occurs the other way around. By traveling in the opposite direction, refrigerant removes heat from the outdoor air and vents it into your home to warm rooms.

Heat pumps working in heating mode are most efficient when the temperature is above freezing outside. If it becomes too chilly, a backup electric resistance heater kicks on to keep your home comfortable, but your heating expenses go up as a result.

Heat pumps work longer than furnaces as the air doesn’t turn as hot. This helps keep a more balanced indoor temperature. Additionally, because heat pumps transfer heat rather than making it from a fuel source, they can operate well above 100% efficiency. You should expect 30–40% savings on your heating costs by getting a heat pump.

Request Heat Pump Installation or Service Now

Heat pumps are a green choice and money-saving. They are an alternative to the traditional AC/furnace system and require the same amount of maintenance—one inspection in the spring and another in the fall.

If you want to install a heat pump, Donelson Air Service Experts is the company to contact. We’ll size and install your equipment to match your heating and cooling needs. And then we’ll uphold our installation with a 100% Satisfaction Guarantee* for a year. To learn more, contact us at 615-953-9885 now.

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