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Why Is My Durham HVAC System Turning On and Off?

June 28, 2020

If your HVAC system is struggling to keep your Durham home comfortable, it’s time to take action. One of the most common issues homeowners face is an HVAC system that repeatedly turns on and off. This short-cycling behavior can seriously impact your comfort and damage your system, so it’s crucial to check the most likely causes.

Your Thermostat Is Malfunctioning

If your thermostat isn’t reading the right temperatures in your home, your entire system may be affected. This is often caused by poor thermostat placement. A thermostat that’s too close to an air leak or HVAC vent may feed inaccurate information to your system. It’s also possible the thermostat itself may be faulty or uncalibrated. An HVAC repair technician can easily resolve these issues by testing, moving or replacing your thermostat.

You’re Low on Refrigerant

If it’s an air conditioner or heat pump that’s giving you trouble, the problem may be a lack of refrigerant. Every air conditioning system is designed to operate at a specific refrigerant level. If the level drops too low, a pressure switch will shut down the compressor to prevent damage. This may repeatedly happen, causing your system to cycle and shut down prematurely. Low refrigerant levels generally indicate a potentially harmful leak, so it’s important to schedule HVAC repairs promptly.

Your HVAC System Is Oversized

When it comes to your HVAC system, bigger isn’t necessarily better. Instead of steadily maintaining a comfortable temperature, an oversized system may heat or cool your home in short, rapid bursts. In addition to causing excessive wear and tear, this also leads to uncomfortable temperature fluctuations and poor humidity control. Unfortunately, a complete replacement is often the only practical solution for an oversized system. To avoid this costly problem, make sure all your HVAC services are performed by trained and experienced professionals.

A short-cycling HVAC system can be a major problem for Durham homeowners. For swift and effective solutions to all your heating and cooling problems, call Lee Air Conditioning for expert HVAC services.

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