Heating System Repair in Ashburn, VA

A furnace that short-cycles is often reacting to a dirty flame sensor, a clogged filter restricting airflow, or an overheating heat exchanger. A technician can pinpoint the cause during a diagnostic visit and repair the specific component that is triggering the shutdown.

Repair usually makes sense when the system is under 15 years old and the repair cost is well below half the cost of a new unit. When a system is older and failing repeatedly, replacement often costs less over time than stacking repairs, and a technician can walk you through both options after diagnosing the issue.

A heat pump that runs but produces cool or lukewarm air often has a refrigerant leak, a failed reversing valve, or a defrost control problem keeping it stuck in cooling mode. Northern Virginia winters are mild enough that a properly working heat pump should produce steady, warm air on most days, so this symptom needs a technician to diagnose the specific fault.

Heat pumps and furnaces fail in different ways, so the repair process is different for each. A heat pump is a refrigerant-based system that runs year-round, meaning it can develop refrigerant, compressor, or reversing valve issues, while a gas furnace repair typically focuses on ignition components, the flame sensor, the heat exchanger, or the blower motor.

Check and replace your air filter if it is visibly clogged, make sure the thermostat is set to heat mode and the temperature is set above the current room temperature, and note any sounds, smells, or error codes the system is showing. Sharing those details with the technician when they arrive helps speed up the diagnosis.

Yes, Kelvin Services LLC serves homeowners across Northern Virginia, including Alexandria, Arlington, Fairfax, Reston, Sterling, Leesburg, Vienna, Falls Church, Centreville, Burke, Springfield, Woodbridge, Manassas, Lorton, and more.