A Good Spring Cleaning: An HVAC Maintenance Checklist for March

You’ve been hibernating all winter, but March is a time of year when things start happening. If you’re like many homeowners, you may be excited to put winter behind you and throw open the windows. Amid the flurry of decluttering and cleaning, don’t overlook your HVAC system. After all, spring is the prelude to another sweltering summer, making this an ideal time to get your HVAC system in tip-top shape. Not sure what spring cleaning your HVAC system includes? Include these tasks to your March home maintenance checklist.

Swap Out the Air Filter

The air filter is a critical part of your furnace or air conditioner, protecting sensitive equipment from airborne particles and promoting cleaner indoor air. Consistently replace the air filter according to the manufacturer’s suggestions. If you have pets in your home or someone in your home has allergies, change the filter up to once a month to preserve indoor air quality. If you don’t, replacing your old filter with a new one every three months is adequate. In addition to trapping and removing airborne pollutants more effectively, a clean filter promotes better airflow to boost system efficiency by up to 15%.

Examine the Condensate Drain

Your air conditioning system doesn’t simply cool your residence—it also dehumidifies. The condensate drain is the key to removing unwanted moisture from your AC. The drain should be free-flowing and the system’s hose should be leak-free and properly placed. Take a quick look at your condensate drain every time you replace the filter to keep your system running smoothly—and also help you spot warning signs of water damage.

Enjoy Some Fresh Air

Before firing up the air conditioner for the first time this spring, open your windows and doors to circulate fresh air inside. If your home usually feels stuffy, consider adding a whole-house ventilation system. This upgrade blows stale air outside and replaces it with clean, fresh air from outside. Certain equipment pre-cools and dehumidifies incoming air to minimize the impact on your energy expenses while helping you breathe easier.

Give Your Home a Good Cleaning

Thoroughly cleaning your home complements your HVAC maintenance checklist by decreasing the amount of dust and allergens that circulate through the system. Pay special attention to these locations:

  • Wipe down ceiling fan blades.
  • Seal gaps near windows and doors using caulk or weather stripping.
  • Scrub sliding glass door tracks.
  • Remove dirt, pet hair and dust bunnies from the coils located beneath or behind the refrigerator.
  • Wipe off light fixtures and switch out old incandescent bulbs for energy-saving LEDs.

Enhance Your Thermostat

If you haven’t yet looked into programmable or smart thermostats, spring is a perfect time to contemplate adding this affordable upgrade. A programmable thermostat makes a huge difference in your home’s comfort and energy usage. Start off by setting the temperature to 78 degrees F when you’re in the home. Next, plan automatic setback periods of 7 to 10 degrees when the house is empty during the day. With recovery periods set for your arrival time, you can enjoy up to 10% energy savings without compromising comfort.

A smart thermostat takes these benefits a step further by allowing you to make changes remotely. You can also monitor your energy consumption in a mobile app and get individualized, cost-cutting tips.

Have Your Ducts Sealed and Insulated

Ductwork may develop leaks that compromise air quality and increase your energy bills. Sealing these leaks helps your AC function more efficiently and circulate clean, healthy air. Once sealed, insulate your ductwork so air conditioned air doesn’t leak out of your system.

Spray Out the Exterior Unit

The outdoor condenser unit can become filled with debris throughout the cold season. Here’s how to clean it out this March:

  • Remove leaves, pine needles and grass clippings from near the unit.
  • Gently hose down the metal fins to remove dirt and cobwebs.
  • Trim surrounding shrubs and grasses to maintain a one- to two-foot clearance.
  • Check the unit for damage, such as missing insulation or bent fins.
  • Get in touch with a professional technician for AC service before the summer heat takes hold. 

Turn on Your HVAC Unit

After performing your spring cleaning checklist, it’s time to try out your HVAC system. Run it for several minutes to make sure its working. If you discover any problems, verify your thermostat is set correctly before contacting a professional for help.

Schedule Air Conditioning Services in the U.S. with Service Experts Heating, Air Conditioning & Plumbing

If your heating and cooling system needs special help this spring, Service Experts Heating, Air Conditioning & Plumbing is the company to call. Our HVAC solutions help keep your home comfortable and energy efficient throughout the year. Count on fast, long-lasting solutions to all your comfort problems, backed by a 100% satisfaction guarantee. We mean it—if you’re not absolutely happy with our solutions, we’ll make it right. For a spring-ready air conditioning system that provides efficiency and peace of mind, call 866-397-3787 to reach the heating and cooling authorities at Service Experts Heating, Air Conditioning & Plumbing today.

Savings For You

See All Offers Here >


  • Save $50 on a Paid Service
  • Written 100% Satisfaction Guarantee
  • Plus, ask how to save an additional 15% and waive your trip charge!


  • Upgrade to Worry-Free Comfort with the Advantage Program and make NO payments for 30 days!

© 2024 Service Experts, Service Experts Heating & Air Conditioning, and the Service Experts logo and design are registered trademarks of Service Experts LLC and used under license by SE Canada Inc. All Rights Reserved. *Not applicable to the Advantage Program. See your signed Advantage Program Agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions.

Chat with a Service Experts Professional