J & M Heating and Air - Danville's Top-Rated HVAC Repair

When we install a new system, we conduct a thorough assessment of your existing ductwork. For homes in Danville, we pay special attention to sealing leaks at joints and connections, which are common culprits for energy loss. A properly sealed duct system ensures your new, efficient HVAC unit delivers all its heating and cooling power directly into your home, lowering utility bills and improving comfort from day one.

Yes, refrigerant leaks are a frequent issue for AC units in our area, often causing weak cooling and higher energy use. Our technicians use electronic leak detectors to precisely locate the leak. We then repair the compromised coil or connection, evacuate the system to remove moisture and air, and recharge it with the exact manufacturer-specified amount of refrigerant. This repair restores efficiency, protects your compressor, and ensures your system cools effectively again.

Our preventative maintenance tune-up includes inspecting accessible ductwork for signs of separation, gaps, or poor insulation. We check for air leakage at registers and the air handler. While major duct sealing is a separate service, we'll identify issues early and recommend solutions. This proactive approach, combined with cleaning coils and checking refrigerant levels, helps maintain system efficiency, prevents minor leaks from worsening, and extends the life of your HVAC equipment.