Within 10 to 15 minutes, your heat pump should heat your home in Beaverdam, VA, and it shouldn’t cycle more than two or three times an hour. If the system rapidly switches on and off, there’s a problem, and it may require a professional to diagnose. A heat pump may short-cycle because they’re overheating, the thermostat is not operating correctly or the system is oversized.

Blockage to Airflow

Overheating will cause a heat pump to shut down prematurely as a safety measure. One cause of overheating is a dirty filter because this restricts airflow and heats up the motor as it works harder to do its job. Closed or blocked supply vents may also be the culprit.

Dirt Buildup in the Heat Pump

Over time, dirt and dust build up in any HVAC system, and these can create an insulating coat over the motor and evaporator coil. If these components get too hot, then the consequence will be overheating and an abrupt shutdown.

An Uncalibrated Thermostat

If your heat pump shuts down before reaching the set point, that may be because the thermostat thinks it already reached it. The problem, then, lies in the thermostat sensor. A typical maintenance visit will include thermostat calibration.

An Oversized Unit

Many heat pumps blow out at one speed and have a specific capacity that fits them for certain spaces. Your system may cycle rapidly because it’s too powerful for your home, and the result is usually uneven heating throughout your home, and premature wear and tear on the motor. Unfortunately, only a system replacement can address this issue.

For a high-quality heat pump repair that addresses your short-cycling here in Beaverdam, call Ultimate Air, Inc. We’re available 24/7 for emergencies, and we work on all makes and models of heat pumps and mini-splits.

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