10 Essential HVAC Maintenance Tips to Save Money

Regular HVAC maintenance can reduce energy bills by up to 30% and extend your system's lifespan by years. Here are the essential tips every homeowner should know.

1. Change Air Filters Monthly

The single most important maintenance task is changing your air filter every 30-90 days. A dirty filter restricts airflow, forcing your system to work harder and consume more energy. For homes with pets or allergies, monthly changes are recommended.

2. Keep Outdoor Units Clear

Your outdoor condenser unit needs at least 2 feet of clearance on all sides. Remove leaves, grass clippings, and debris regularly. Trim back vegetation and ensure proper airflow around the unit for optimal efficiency.

3. Clean Condenser Coils Annually

Dirty condenser coils reduce cooling efficiency by up to 30%. Once a year, gently spray the coils with a garden hose to remove dirt and debris. For heavily soiled coils, professional cleaning is recommended.

4. Check and Clean Drain Lines

Clogged condensate drain lines can cause water damage and system shutdowns. Pour a cup of white vinegar down the drain line every few months to prevent algae growth and clogs.

5. Inspect Ductwork for Leaks

Leaky ducts waste up to 30% of your conditioned air. Check accessible ductwork for gaps, holes, or disconnected sections. Seal leaks with mastic sealant or metal tape (not duct tape).

6. Program Your Thermostat

A programmable or smart thermostat can save 10-30% on heating and cooling costs. Set temperatures higher when away and lower when sleeping. Every degree of adjustment saves about 3% on energy bills.

7. Schedule Professional Maintenance

Professional HVAC maintenance twice a year (spring and fall) catches problems early and keeps your system running efficiently. Technicians check refrigerant levels, electrical connections, and system performance.

8. Insulate Exposed Ductwork

Ductwork in unconditioned spaces like attics or crawl spaces should be properly insulated. This prevents energy loss and condensation problems, improving overall system efficiency.

9. Check Refrigerant Levels

Low refrigerant indicates a leak and reduces cooling capacity. If your system isn't cooling properly, have a professional check refrigerant levels and repair any leaks before recharging.

10. Monitor System Performance

Pay attention to unusual noises, odors, or performance changes. Catching problems early prevents costly repairs. If you notice anything unusual, schedule a professional inspection immediately.

The Bottom Line

Regular HVAC maintenance is an investment that pays for itself through lower energy bills, fewer repairs, and extended equipment life. While some tasks are DIY-friendly, professional maintenance ensures your system operates at peak efficiency.