HVAC Maintenance Checklist

Weather extremes are putting more pressure on homeowners’ heating, ventilation, and air conditioning systems in keeping homes cool during the summer and warm in the winter. That's one reason it's more important than ever to keep up your HVAC maintenance. But that's not always top of mind for homeowners.

The HVAC often runs in the background, which means you likely don’t give it much thought — until it breaks down, that is. And that can happen at the worst times.

To be fair, many homeowners may not be sure what to do. Refer to this checklist regularly to make sure you’re doing 10 activities that will keep your HVAC humming.

1. Change filters regularly. Swap them out every 30 to 90 days.

2. Clean air vents and registers. Use a brush to clear dust and dirt at the top of the registers and the bottom of vents or use a vacuum cleaner.

3. Keep outdoor units clear of debris. Make sure the area around your HVAC unit is free of overgrown plantings, leaves, and dirt.

4. Seal drafts. Weather strip doors and caulk around windows to keep your HVAC from overworking.

5. Examine exposed ductwork. Seal any holes or leaks with duct sealant or metal-backed tape.

6. Monitor your thermostat. Consider a programmable thermostat to increase your system’s efficiency and avoid overrunning it.

7. Check the flame. Natural gas furnaces should have a crisp, blue flame; if not, call an HVAC tech immediately.

8. Clean the drain line. Flushing it out regularly will help avoid clogs.

9. Check carbon monoxide detectors. Test monitors monthly. Replace batteries annually.

10. Schedule a professional checkup. Have units inspected at least yearly.

Keep HVAC Units Clean

Like, vents, registers, and condenser and evaporator coils need to be kept clean to prevent a buildup of dust and dirt that could increase energy costs and even reduce your HVAC’s lifespan. AC maintenance tips include keeping outdoor units clean and free of any obstructions. Make sure shrubs or trees near your HVAC unit are at least two feet away to allow adequate flow around the condenser.

Check Thermostat and Consider a Smart Version

Monitor your thermostat to make sure it’s working properly and consider upgrading to a programmable or smart thermostat to increase your unit’s efficiency and avoid overrunning your unit.   For example, it can enable you to set weekly schedules automatically and prevent energy waste, gain remote control and monitoring, and receive energy usage reports.

Clean the HVAC Drain Line

HVACs have an AC condensate drain line that can become clogged with built-up sediment, algae, or mold. Some AC units have sensors that may alert you when they detect clogs. If you don’t have those, telltale signs include full drain pans, water around the indoor unit, an AC that won’t turn on, or a musty odor when running the AC. Clean the drain line every three months with a mixture of bleach and water.