Indiana weather doesn't mess around — from sweltering summers to bitter winters, your HVAC system works overtime all year. Regular maintenance is the key to efficiency, longevity, and avoiding costly breakdowns when you need it most. Here's your comprehensive seasonal checklist.
Spring Maintenance (March–May)
Spring is preparation season. Before the heat hits, give your AC the attention it deserves.
- Replace air filters — Dirty filters restrict airflow and force your system to work harder. Replace every 1-3 months.
- Clean around outdoor unit — Remove leaves, grass clippings, and debris within 2 feet of the condenser. Trim back overgrown plants.
- Check thermostat settings — Make sure it's switching correctly between heat and cool modes. Consider upgrading to a programmable model.
- Inspect ductwork for leaks — Leaky ducts can lose up to 30% of conditioned air. Check visible ductwork for gaps or disconnected sections.
- Schedule professional AC tune-up — Have a technician check refrigerant levels, coils, and electrical connections before the cooling season.
Summer Maintenance (June–August)
Your AC works hardest in summer. Keep it running at peak performance with these mid-season checks.
- Monitor filter monthly — During heavy-use months, check filters more frequently. A clogged filter can freeze your evaporator coil.
- Keep vents open and unblocked — Closing too many vents increases pressure in your ductwork. Keep at least 80% of vents open.
- Check drain line — A clogged condensate drain can cause water damage. Pour a cup of vinegar down the line to prevent algae growth.
- Listen for unusual noises — Squealing, grinding, or rattling sounds indicate potential problems. Address them early.
Fall Maintenance (September–November)
As temperatures drop in Indiana, shift your attention to the heating side of your system.
- Schedule furnace inspection — Have a professional check the heat exchanger, burner, and ignition system for safety and efficiency.
- Clean around furnace area — Keep the area around your furnace clear of stored items, especially flammables.
- Test carbon monoxide detectors — This is critical! Replace batteries and test all detectors before heating season begins.
- Seal window and door drafts — Reducing heat loss means less work for your furnace.
Winter Maintenance (December–February)
Keep your home warm and safe during Indiana's coldest months.
- Check for ice buildup on outdoor units — Heat pumps in particular need clear airflow.
- Monitor thermostat consistency — If temperatures fluctuate, your system may need attention.
- Keep snow clear from vents and flues — Blocked exhaust vents create carbon monoxide hazards.
- Replace air filters monthly — Your system runs continuously in deep winter; keep filters fresh.
Pro Tip: Schedule in Advance
Spring and fall are the busiest seasons for HVAC pros. Book your seasonal tune-ups at least 3-4 weeks in advance to avoid the rush. Many customers schedule their next visit at the end of each service call — it's the easiest way to stay on track.