10 HVAC Maintenance Tips Every Saint Louis Homeowner Should Know

Living in Saint Louis means experiencing all four seasons—sometimes in the same week! Your HVAC system works hard to keep your home comfortable year-round. Here are ten essential maintenance tips to keep it running efficiently.

1. Change Your Air Filters Regularly

This is the single most important thing you can do for your HVAC system. Dirty filters restrict airflow, making your system work harder and increasing energy bills. Check your filter monthly and replace it every 1-3 months, depending on usage and filter type.

2. Keep Your Outdoor Unit Clear

Maintain at least 2 feet of clearance around your outdoor AC or heat pump unit. Remove leaves, grass clippings, and debris that can block airflow and reduce efficiency.

3. Schedule Bi-Annual Professional Maintenance

Have a professional technician service your system twice a year—once in spring for your AC and once in fall for your heating system. This catches small problems before they become expensive repairs.

4. Check Your Thermostat Settings

Make sure your thermostat is working correctly and set to an appropriate temperature. Consider upgrading to a smart thermostat for better control and energy savings.

5. Inspect and Clean Vents and Registers

Vacuum dust from supply and return vents regularly. Make sure furniture and curtains aren't blocking airflow from vents.

6. Check for Air Leaks

Seal gaps around windows, doors, and ductwork to prevent conditioned air from escaping. This is especially important in our Saint Louis climate with hot summers and cold winters.

7. Listen for Unusual Sounds

Banging, squealing, or grinding noises can indicate problems with your system. Don't ignore these warning signs—call a professional to diagnose the issue.

8. Monitor Your Energy Bills

A sudden spike in energy costs often indicates your HVAC system isn't running efficiently. Keep track of your bills to catch problems early.

9. Keep Condensate Drains Clear

Your AC produces condensation that drains away through a pipe. If this drain gets clogged, it can cause water damage and humidity problems. Pour a cup of bleach down the drain annually to prevent algae buildup.

10. Know When to Replace

If your system is over 15 years old and requiring frequent repairs, it may be more cost-effective to replace it with a modern, energy-efficient model. Today's systems can save 20-40% on energy costs.

Need Professional Help?

At Air Elect, we're here to help Saint Louis homeowners keep their HVAC systems running smoothly. Contact us for a free inspection or to learn about our maintenance plans.