AC Maintenance Checklist: What Homeowners Should Do (and When to Call a Pro)
Service Area: Lansdale, PA
Keeping your air conditioner properly maintained is one of the best ways to avoid breakdowns, lower energy bills, and extend the life of your system—especially during hot, humid Pennsylvania summers.
Below is a clear, homeowner-safe AC maintenance checklist, plus guidance on which tasks should always be handled by a licensed professional.
Quick Answer: What Does an AC Maintenance Checklist Include?
A basic air conditioning maintenance checklist includes changing air filters regularly, keeping the outdoor unit clear of debris, checking thermostat operation, monitoring system performance, and scheduling a professional AC tune-up once per year.
Homeowner AC Maintenance Checklist (Safe DIY Tasks)
These tasks are safe for most homeowners and should be done regularly throughout the cooling season.
✅ 1. Change or Clean Air Filters
- Check filters every 1–2 months during summer
- Replace disposable filters or clean reusable ones as needed
- Dirty filters restrict airflow and can increase energy use by up to 15%
✅ 2. Keep the Outdoor Unit Clear
- Remove leaves, grass clippings, and debris around the unit
- Maintain at least 2 feet of clearance on all sides
- Trim bushes and mow carefully to avoid clogging the coil
Good airflow is essential for efficient cooling.
✅ 3. Check Thermostat Operation
- Make sure the thermostat responds correctly to temperature changes
- Replace batteries if needed
- Watch for short cycling (system turning on and off frequently), which can signal a problem
✅ 4. Pay Attention to Sounds, Smells, and Performance
Use your senses to spot early warning signs:
- New or unusual noises
- Musty or burning odors
- Weak airflow or longer cooling cycles
These often indicate the need for professional service.
✅ 5. Monitor Indoor Comfort & Humidity
Your AC should remove moisture from the air.
- If your home feels sticky or damp, performance may be declining
- Poor humidity control can affect comfort and indoor air quality
AC Maintenance Tasks That Require a Professional
Some air conditioning maintenance should never be performed by homeowners due to safety, environmental, and regulatory concerns.
⚠️ Refrigerant (Coolant) Checks
- Refrigerant levels must be measured with specialized tools
- Handling refrigerant requires EPA certification
- Low refrigerant usually indicates a leak and must be professionally repaired
If cooling performance drops, call a licensed HVAC technician.
⚠️ Electrical & Mechanical Inspections
- Loose wiring or worn components can cause system failure or safety hazards
- Professional inspections help catch issues before costly breakdowns
⚠️ Evaporator & Condenser Coil Service
- Ice buildup on coils often signals airflow or mechanical problems
- Improper handling can damage the system
If you see ice or reduced airflow, turn the system off and schedule service.
How Often Should You Schedule Professional AC Maintenance?
Most HVAC manufacturers and energy experts recommend:
- One professional AC tune-up per year, ideally in spring
According to the U.S. Department of Energy, regular professional maintenance:
- Improves efficiency
- Reduces energy consumption
- Extends equipment lifespan
Benefits of Annual AC Maintenance
- Fewer unexpected breakdowns
- Lower monthly energy bills
- Better indoor comfort
- Longer system life
- Improved indoor air quality
Professional AC Maintenance in Lansdale, PA
If it’s been a while since your last AC inspection, the certified technicians at C&C Heating & Air Conditioning are here to help.
We provide thorough air conditioning maintenance and inspections for homeowners throughout Lansdale and surrounding Pennsylvania communities.
📞 Call 215-799-0515 or request service online