Heat pumps are strong, durable and energy-efficient. They transfer heat between the outdoor and indoor air to heat or cool your home in Southlake, TX. If your heat pump fails to heat a home and instead blows cold air, one of the reasons below could be the cause.

Frozen Heat Pump

During severe winters, the outdoor unit can develop ice or frost. Frost can also form on the coils during normal operation if the heating system overworks. If the heat pump detects ice buildup, it reverses the flow of the refrigerant by shifting temporarily to cooling mode.

Hot air from the home melts the air that builds up in the outdoor unit. After the system defrosts, your pump will switch back to heating mode. Heat pump freezing can result from low refrigerant levels, a malfunctioning defrost system, a sticking reversing valve and damaged outdoor fan motors.

Slightly Cooler Air

Before the auxiliary heat strip kicks in, the heating system blows slightly cooler air. It will blow between 85 and 92 degrees, which is slightly lower than your body temperature. However, this will only happen for a short period as the auxiliary heat strip will raise the temperature to comfortable levels.

If you give the heating system some time, it will raise the temperature accordingly. If that doesn’t happen, call a technician to check your system for faulty components.

Broken Heat Pump

If one or more components of the heat pump sustains damages, your heating system might fail to distribute hot air. A system that is not in defrost mode and does not warm a home even after running for several hours may have a problem.

With help from a technician, you could better understand the problem with your heat pump and find a lasting solution. Call North Tarrant Heat & Air technicians for heating systems, air conditioning, indoor air quality and smart home automation services for homes in Southlake, TX.

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