HVAC Maintenance Schedule: What to Do Each Season
By Top HVAC Services Editorial Team · Mar 29, 2026 · 7 min read
Quick Answer: A simple seasonal HVAC maintenance schedule prevents 80% of breakdowns and adds 5-7 years to your system. Here is exactly what to do and when.
A 1-hour seasonal tune-up costs $75-$200 and prevents most major HVAC failures. Here is the schedule the pros recommend:
Spring (April-May): AC tune-up
- Replace air filter (1-3 month rotation continues)
- Clean outdoor condenser coils (soft water hose, NOT pressure washer)
- Schedule professional AC tune-up: refrigerant check, electrical inspection, capacitor test
Summer (June-August): monitor
- Replace filter every 1-2 months (pollen + dust season)
- Listen for unusual sounds — address early
- Check for ice on indoor coil (sign of low refrigerant)
Fall (Sept-October): Furnace tune-up
- Replace filter (high-MERV for winter sealed-up homes)
- Schedule professional furnace tune-up: combustion test, heat exchanger inspection, gas pressure check
- Test smoke + CO detectors
Winter (Nov-March): vigilance
- Filter every 1-2 months
- Keep outdoor unit clear of snow and ice
- Listen for furnace short-cycling — call a pro early
Need an HVAC pro for your project?
Get matched with vetted local contractors in under 24 hours.
Get free quotes