DIY HVAC Maintenance You Can Do Today

Monthly Tasks

Replace/Check Air Filter

• The single most important maintenance task
• Check monthly, replace every 1-3 months
• Hold up to light - if you can't see through it, replace it

Check Thermostat

• Verify settings are correct
• Replace batteries annually
• Clean dust from inside

Seasonal Tasks

Spring (Before Cooling Season)

Outdoor Unit:

• Turn off power at disconnect
• Remove debris (leaves, grass, dirt)
• Gently hose off fins (from inside out)
• Trim plants back 2 feet
• Level the unit if it's shifted

Indoor:

• Clean supply and return vents
• Test AC by lowering thermostat 5 degrees
• Listen for unusual sounds

Fall (Before Heating Season)

• Replace air filter
• Test heating by raising thermostat
• Check for drafts around windows and doors
• Clear area around furnace/air handler

Things NOT to DIY

Leave these to professionals:

• Refrigerant handling (requires certification)
• Electrical work
• Gas connections
• Heat exchanger inspection
• Ductwork repairs
• Thermostat wiring

When to Call a Pro

Schedule professional maintenance if:

• System hasn't been serviced in over a year
• You hear unusual noises
• Performance has declined
• Energy bills have increased
• System is over 10 years old

Simple Troubleshooting

System won't turn on:

• Check thermostat settings and batteries
• Check circuit breaker
• Check outdoor disconnect switch
• Wait 5 minutes and try again

Weak airflow:

• Check air filter
• Check that vents are open
• Check return vents aren't blocked