Your Fall HVAC Maintenance Checklist for Concord
Jason Corbett • October 28, 2025

Your Fall HVAC Maintenance Checklist for Concord

Your home’s cooling and heating system is a complex piece of equipment that requires ongoing maintenance to keep running properly. Fall is the perfect time of year to take care of your HVAC system. You can use this fall maintenance checklist in Concord, CA, to enjoy a comfortable winter and get a head start on spring.


Replace Air Filters

The first step to proper HVAC maintenance is to replace your system’s air filters. Most filters should be changed every three months or so. Take the time to check on your air filter and change it if necessary. This supports both efficiency and indoor air quality.


Clear Debris Around Outdoor Units

Any debris around your outdoor unit can cause serious damage. When leaves, nearby plants, and other debris work their way into the casing, they can clog up coils, damage fans, and increase corrosion. Trim any plants around the unit and make sure to clean out leaves and other yard waste.


Check Thermostat Settings

As the seasons start to change, you should reconsider your thermostat settings to make sure you aren’t wasting energy. Your AC could be kicking in unnecessarily at midday when natural temperatures could actually keep your home cool if you just wait a few hours.


Inspect Registers and Vents

Look around your home to make sure no rugs, furniture, or other items are blocking floor registers and vents. You might also consider professional duct cleaning to ensure proper airflow and improved indoor air quality.


Test Carbon Monoxide and Smoke Detectors

Take a moment to hit the “test” button on carbon monoxide and smoke detectors around your home to make sure they’re working. In general, you should replace batteries every six months or as needed.


Get Started on Your Fall Maintenance Checklist in Concord, CA

The time to start your fall maintenance checklist in Concord, CA, is now. One of the best things you can do for your HVAC system is to schedule a professional tune-up. The team at Mercury Heating & Air can get your home’s heating ready for the season ahead. Reach out to schedule service today.

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