The DMV's extreme weather, from humid summers to freezing winters, puts serious strain on your HVAC system. Regular maintenance keeps your system running efficiently, extends its lifespan, and prevents costly emergency repairs. Here's your seasonal checklist.
SPRING (MARCH - MAY)
- Replace air filters - Do this every 1-3 months depending on usage
- Clean outdoor condenser unit - Remove debris, leaves, and trim vegetation 2 feet around it
- Test your AC - Turn it on before the heat hits to catch issues early
- Check thermostat - Switch to cooling mode, verify it's working correctly
- Schedule a professional tune-up - Annual AC maintenance catches refrigerant leaks and worn parts
SUMMER (JUNE - AUGUST)
- Check air filters monthly - Summer dust and pollen clog filters fast
- Keep vents clear - Move furniture away from supply and return vents
- Monitor your energy bills - A sudden spike may indicate system problems
- Clear the condensate drain - A clogged drain causes water damage and mold
FALL (SEPTEMBER - NOVEMBER)
- Schedule furnace inspection - Before the first cold snap
- Replace air filters again
- Test your heating system - Run it for 30 minutes and check for strange noises or smells
- Seal ductwork - Leaky ducts waste up to 30% of heating energy
- Check carbon monoxide detectors - Critical for gas furnace safety
WINTER (DECEMBER - FEBRUARY)
- Keep filters fresh - Heavy furnace use clogs filters quickly
- Don't block heat registers - Ensure warm air circulates freely
- Set thermostat to 68°F - Every degree above costs about 3% more energy
- Watch for ice on outdoor unit - Heat pump ice buildup needs professional attention
WHEN TO CALL A PRO
Some tasks require a certified HVAC technician: refrigerant handling, electrical work, gas connections, and ductwork repairs. At All Purpose, our certified technicians service all major HVAC brands across Maryland, DC, and Virginia.