Larry's Heating and Air | HVAC Services in Hattiesburg, MS 39401

Yes, this is a frequent issue for Hattiesburg homeowners, often related to the heat pump's reversing valve. This crucial component switches the system between heating and cooling modes. Over time, it can stick or fail due to wear, debris, or electrical issues, causing the system to blow cold air when you need heat. Our technicians are experts at diagnosing and repairing reversing valve problems to restore your system's proper function efficiently.

Thermostat malfunctions are common, especially with older models or due to power surges common in our area. Issues can range from dead batteries and loose wiring to internal calibration problems or a mismatch with your HVAC system. We'll check the wiring, recalibrate if possible, and recommend a reliable replacement if needed, ensuring your thermostat accurately controls your comfort.

For Hattiesburg homes, we recommend bi-annual preventative maintenance. In the spring, we'll service your AC and heat pump, checking refrigerant levels, cleaning coils, and inspecting the reversing valve and electrical components. In the fall, we focus on your heating system, ensuring all connections are secure and the thermostat is calibrated. This proactive care helps prevent unexpected breakdowns, extends system life, and maintains peak efficiency through our humid summers and mild winters.