Clontz & Son Heating and Cooling - Rockville's Professional HVAC Services

Given our local dust and pollen levels, we recommend checking your filter every month and changing it at least every 90 days for standard filters. More frequent changes, every 30-60 days, are often needed for homes with pets or during high-activity seasons to prevent clogs that strain your system and reduce efficiency.

Short cycling is a common issue here, often caused by an oversized unit, a dirty air filter, or a faulty thermostat. It forces your system to work harder, increasing wear and energy bills. Our technicians can diagnose the root cause—whether it's a simple fix like cleaning the coils or a more complex calibration—to restore proper, efficient operation.

We offer comprehensive seasonal maintenance plans tailored to our local weather. Our spring and fall tune-ups include checking refrigerant levels, cleaning coils and components, inspecting electrical connections, and calibrating your thermostat. This proactive service is the best defense against the strain of summer heat and winter cold, preventing costly breakdowns and extending your system's lifespan.