How a Heat Pump Cools Your House

In San Antonio, heat pumps can be a popular choice to heat and cool your home.

They appear almost like an air conditioner. In fact, they run in the same way during hot weather. Because of a reversing valve, they can transfer humidity in the opposite direction as well as add comfort to your house when it's cold.

Not sure if you use a heat pump or an air conditioner? All you have to do is locate the model number on the outdoor unit and run it online. If it turns out you use a heat pump, or you’re thinking about buying one, learn more about how this HVAC unit keeps homes cozy.

How Heat Pumps Run

Heat pumps depend on a refrigeration system much like an air conditioner. Most can operate like a ductless mini-split, because they can heat and cool. Heat pumps have an indoor evaporator coil and an outdoor condensing coil. Refrigerant is moved through these coils to move heat. The outdoor unit also uses a compressor and is surrounded by metal fins that work as a heat sink to help shift warmth efficiently.

Summertime Cooling

In cooling mode, the refrigerant starts in the evaporator coil. Air from inside the house is distributed over the coil, and the refrigerant sucks out humidity. Moisture in the air also condenses on the coil, falling into the condensate pan below and drains away. The following dehumidified air flows through the ductwork and back into your house.

At the same time, the refrigerant passes through a compressor on its way to the outdoor coil. This constricts the refrigerant, causing it to heat up even more. As it goes through the condensing coil, the exterior fan and metal fins help to discharge heat to the outside. The refrigerant heads back inside, moving through an expansion valve that lowers its temperature it significantly, preparing it to begin the process all over again.

When your heat pump is installed and maintained correctly, you’ll have efficient cooling comparable to an energy-efficient air conditioner.

Wintertime Heating

When your heat pump is heating, the heat exchange process happens in reverse. By moving in the opposite direction, refrigerant pulls heat from the outdoor air and disperses it into your residence to warm the inside.

Heat pumps running in heating mode are most effective when the temperature remains above freezing outside. If it gets too chilly, a backup electric resistance heater kicks on to keep your house cozy, but your heating costs go up as a result.

Heat pumps work longer than furnaces because the air doesn’t turn as warm. This helps maintain a more stable indoor temperature. Additionally, because heat pumps move heat rather than generating it from a fuel source, they can work well above 100% efficiency. You can anticipate 30–40% savings on your heating costs by installing a heat pump.

Book Heat Pump Installation or Service Today

Heat pumps are good for the environment and economical. They are an alternative to the standard AC/furnace configuration and should have the same amount of maintenance—one appointment in the spring and another in the fall.

If you want to install a heat pump, Aramendia Plumbing, Heating and Air is the company to contact. We’ll size and install your equipment to match your heating and cooling demands. And then we’ll support our work with a 100% Satisfaction Guarantee* for a year. For more information, contact us at 210-404-4233 now.

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