As summer winds down, your heating and cooling system has been running hard for months. Learning how to prep your HVAC system for the fall transition before cooler temperatures arrive keeps your home comfortable. It also manages your energy bills and ensures your heater is ready when you need it.

 

DIY HVAC Tasks

1. Swap Out Your Air Filters

After working double-duty all summer, your air filter is likely full of dust, pollen, and pet dander.

• Why it matters: A clogged filter restricts airflow, forcing your system to work harder, consume more energy, and wear down prematurely.
• Pro tip: Replace filters before switching over to your heating system to ensure clean indoor air quality for fall.

2. Clear Around the Outdoor Condenser Unit

Late-summer storms, falling leaves, and overgrown yard growth can clutter the area around your outdoor AC condenser.

• Clear away leaves, twigs, grass clippings, and weeds within a 2-foot radius of the unit.
• Gently rinse dust off the exterior coils using a garden hose (avoid high-pressure washers, which can bend the delicate fins).

3. Adjust Your Thermostat Settings

Transition season brings warm afternoons and chilly evenings, making smart thermostat management key to staying comfortable without burning through extra energy.

• Switch your thermostat settings from Cool to Heat to ensure the unit responds properly.
• Update your automated schedules to account for cooler nights.
• Consider upgrading to a programmable or smart thermostat if you haven’t already to save up to 10% annually on heating and cooling costs.

4. Open and Unblock All Supply Vents

Walk through your home to check that return and supply vents aren’t covered by furniture, rugs, or drapes.

• Keeping all vents open and unobstructed maintains proper system pressure and balanced air distribution throughout your home.
• Avoid closing vents in unused rooms, as this creates pressure imbalances that strain your HVAC blower motor.

5. Give Your Furnace a Quick Test Run

Don’t wait for the first freezing night of the year to find out if your heater is working properly.

• Set your thermostat to Heat and raise the temperature a few degrees above the current room temperature.
• Listen for unusual noises (clunking, squealing, or clicking).
• Note: A slight burning dust smell during the first 10-15 minutes is normal as dust settles off the heating elements, but persistent odors mean it’s time to call a pro.

 

Schedule Your Fall System Tune-Up

While DIY steps are a great start, a professional inspection is the single best way to protect your equipment, lower utility bills, and prevent unexpected winter breakdowns.

At Comfort Professionals, our certified technicians check electrical connections, inspect heat exchangers for safety, test airflow, and tune your system for maximum efficiency before winter hits.

Ready for a worry-free fall? Contact Comfort Professionals today to schedule your autumn HVAC maintenance service! Call or text us at (770) 756-5600.