Experienced HVAC Repair in Hurlock, MD 21643 - M&S Mechanical

That's a classic symptom of a failing heat pump reversing valve, a common issue in our Hurlock climate. This critical component directs refrigerant flow to change modes. When it sticks or fails, your system gets stuck in one mode. We can diagnose the exact cause—whether it's an electrical issue, a stuck valve, or a refrigerant problem—and perform the precise repair to get your system switching properly again, restoring your year-round comfort.

Yes, that humming sound often points to a failed start capacitor, one of the most frequent AC failures we see. The capacitor provides the jolt of energy to start the compressor and fan motors. Without it, those motors can overheat and burn out, turning a simple, affordable fix into a major repair. We treat capacitor failures as urgent to prevent further damage. Our technicians carry common capacitors on their trucks for most Hurlock-area systems, so we can often get your cool air back on the same day.

Proactive maintenance is the key. For heat pumps and AC units common in our area, we recommend a professional tune-up twice a year—in spring for cooling and fall for heating. During a maintenance visit, we specifically check capacitor health, test the reversing valve operation, clean components, and ensure electrical connections are tight. This proactive care helps catch small issues before they lead to a breakdown on the hottest or coldest day, improving efficiency, extending your system's life, and saving you money on repairs.