B & B Air Conditioning & Heating Service Co | Local HVAC Repair in Hagerstown, MD

Yes, that's a common issue we see in Hagerstown homes. Dust, pet hair, and debris can coat the evaporator coils inside your air handler, insulating them and preventing proper heat absorption. This forces your system to run longer, reducing cooling power and spiking energy costs. Our service includes a thorough coil cleaning as part of routine maintenance to restore efficiency and prevent strain on your compressor.

A faulty reversing valve is a likely culprit for that problem, especially as systems age. This valve is responsible for changing the flow of refrigerant to switch between heating and cooling modes. When it fails or gets stuck, your heat pump can't provide heat. Our technicians are experts at diagnosing and replacing reversing valves, getting your system back to providing year-round comfort for Hagerstown's changing seasons.

Preventative maintenance is key. We recommend a professional tune-up twice a year—in spring for your cooling system and fall for heating. This service includes cleaning critical components like evaporator coils, checking refrigerant levels, testing the reversing valve operation, and inspecting electrical connections. For Hagerstown homeowners, this proactive care improves reliability, maintains efficiency, and helps catch small problems before they lead to a complete breakdown on the hottest or coldest days.