Introduction
Spring is the perfect time to show your HVAC system a little love — before the summer heat kicks in.
A little maintenance now can save you hundreds later in repairs, lower your energy bills, and keep your home feeling just right.
In this guide, we’ll walk you through a simple, effective spring maintenance checklist you can tackle yourself (and when it’s smart to call in a pro).
Replace or Clean Air Filters
- Replace HVAC filters (ideally every 1–3 months)
- Higher-efficiency filters (MERV 8–13) improve indoor air quality
- Saves energy by allowing better airflow
Need help picking the right filter? (Coming Soon: “How to Choose the Right Air Filter for Your Home“)
Check Your Thermostat Settings
- Switch to cooling mode and test system response
- Program optimal temperatures for spring/summer
- Upgrade to a smart thermostat for even bigger savings
Check out our top 5 list: Best Smart Thermostats 2025
Inspect and Clean Outdoor Condenser Unit
- Remove leaves, grass clippings, and debris from around unit
- Rinse off coils gently with a hose (no pressure washers!)
- Check for visible damage or corrosion
Clear Indoor Vents and Registers
- Vacuum out dust buildup
- Make sure furniture or curtains aren’t blocking airflow
- Keep vents fully open for system efficiency
Test System Operation
- Run the AC through a full cycle
- Listen for unusual noises
- Check for odd smells (could indicate mold or electrical issues)
Check Refrigerant Lines (Visual Only)
- Inspect the visible refrigerant lines for insulation damage
- Call a pro if you notice frost, leaks, or significant wear
Inspect Ductwork for Leaks (Basic DIY)
- Check visible ducts in basements, attics, crawl spaces
- Look for obvious leaks, holes, or disconnected sections
- Temporary fixes: HVAC foil tape until a full repair
Check Drain Lines and Pans
- Ensure condensate drain line is clear
- Check drain pan under indoor unit for water accumulation
- Blocked drains = potential water damage and mold
Schedule Professional Service if Needed
- Annual maintenance helps catch small problems early
- Some tasks (refrigerant pressure checks, internal coil cleaning) require licensed pros
- A tune-up now can save a breakdown later
Free Download: Full Spring HVAC Maintenance Checklist!
Want a simple way to keep your home cool, efficient, and worry-free this summer?
Download our free Spring HVAC Maintenance Checklist — a printable, easy-to-follow guide that covers everything you need to know.
✅ Quick reference for DIY maintenance
✅ Save money by spotting small issues early
✅ Extend the life of your HVAC system
Get your free copy today and stay ahead of the heat!
Conclusion
A little springtime care can make a world of difference when summer heat waves arrive.
Taking a few easy steps today can save you money, extend your system’s life, and keep your home comfortable when you need it most.
Need more ways to save?
Check out our guide to Saving on Cooling Costs This Summer for even more tips!