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Transitioning Your HVAC From Summer To Fall

By All-Temp Heating & Cooling

Date Published: August 31, 2025

As summer winds down in Charlottesville, cooler mornings and shorter days signal that fall is right around the corner. For many homeowners, this shift in seasons also means it’s time to switch from relying on the AC to preparing the heating side of your HVAC system. Making that transition isn’t just a matter of flipping the thermostat from cool to heat. Your HVAC system has been working hard all summer, and it needs a little attention before it shifts gears for the colder months.

If this transition gets skipped or rushed, it can lead to problems like poor indoor air quality, rising energy bills, or system breakdowns right when you need heat most. By taking a few simple steps now, you’ll help your HVAC system run better and last longer. Plus, it’s a lot easier to make these changes while the weather’s still mild rather than scrambling later during a cold snap.

Inspect and Clean the Outdoor Unit

Your outdoor AC unit has likely been running steady for several months. Leaves, dirt, grass clippings, and other debris can easily build up around it during summer. Before switching to heat, it’s smart to tidy that area and check for any signs of wear.

Here’s a quick checklist for inspecting your outdoor unit:

1. Turn off power to the unit so you can safely check it.
2. Remove any built-up leaves, branches, or trash that might be lodged around the base.
3. Gently rinse the outside coils with a hose to wash away dirt. Just avoid using high pressure.
4. Look for signs of damage like bent fins or rust. If anything looks off, it may be time for a technician to check it out.

If you skip this step, the leftover grime can trap moisture or block airflow, and that can lead to bigger issues later. For example, if your AC compressor casing has cracked or become damaged from storm debris, it might go unnoticed until your heating system tries to run, only to trip a fuse or cause system strain. Giving it a good inspection before the season changes can help you catch potential problems early.

Replace Air Filters

Your AC filter has likely picked up a lot of dust during those long summer days. Whether you’ve been running the AC nonstop or sparingly, it’s common for filters to clog with pollen, dust, pet hair, and other debris, especially during high-usage months.

Putting in a fresh filter is a simple step that helps in more ways than one. Clean filters:

1. Improve airflow throughout your HVAC system
2. Help your heating system work more efficiently come fall
3. Cut down on indoor dust and allergens
4. Lower the chances of overheating or system stress

To check your filter, remove the cover and look at its surface. If the filter looks dark or is covered in visible dust, it’s time to toss it and replace it with a new one. When in doubt, most filters should be changed every one to three months, but heavy summer use or indoor pets can affect that timeline.

Skipping this step can lead to all kinds of small problems that stack up quickly. Dirty filters make it harder for your system to push air through, which forces it to work harder and use more energy. That can mean a weakening AC toward the end of summer and a sluggish heater as temps drop. A clean filter is one of the easiest ways to keep things running smooth.

Check the Thermostat Settings

When the seasons change, your home’s needs change, too, including how you set your thermostat. Lots of folks leave their thermostat in cooling mode while the weather still flips between warm afternoons and chilly mornings. But waiting too long to switch can lead to some uneven comfort across your home.

Here’s what to check on your thermostat:

1. Make sure it’s set to heat before colder days arrive.
2. Adjust the temperature to something comfortable for fall. Somewhere in the high 60s to low 70s is a good starting point.
3. If you’re using a programmable thermostat, take a minute to update your schedule so you’re not heating the house when no one’s home.

Programmable and smart thermostats can help improve efficiency by adjusting temps based on your real schedule. Instead of blasting heat during the day or forgetting to lower temps at night, a smart schedule lets your system handle it for you.

A lot of people forget to do this step, thinking it doesn’t matter until it gets really cold. But thermostat settings control how and when your HVAC system activates. Getting them set correctly now helps avoid last-minute surprises when Charlottesville mornings start to dip into sweater weather territory.

Schedule a Professional HVAC Maintenance Check

As you prepare for fall, one of the most valuable things you can do is book a professional HVAC maintenance check. Experts know what to look for to keep your system running efficiently. This kind of check-up is a perfect way to catch potential issues before they become big headaches.

During a maintenance visit, here’s what typically happens:

1. The technician inspects and cleans each component of the system, including ducts and vents.
2. They’ll check the airflow and adjust settings for optimal performance.
3. The technician will also test safety controls and check for gas leaks.
4. Moving parts will be lubricated, and the system will be calibrated to function smoothly.

Regular professional checks can prevent stress on your equipment and avoid those last-minute repair scrambles in the middle of winter. This kind of attention ensures that your HVAC system delivers heat efficiently and reliably throughout the colder months. By investing time in maintenance now, you’re buying peace of mind that your home remains comfy as temperatures dip.

A Head Start on Fall Comfort

Transitioning your HVAC system from summer to fall isn’t just about comfort. It’s about improving performance, boosting efficiency, and avoiding headaches later on. Simple tasks like cleaning the outdoor unit, replacing clogged filters, and programming your thermostat can make a big impact.

A system that’s been maintained doesn’t have to work as hard, which means fewer repairs and better reliability. Letting your HVAC system shift into heating mode without preparation can strain it, especially after months of hard summer use.

Taking care of your HVAC system now is one of those small seasonal habits that pays off in a big way. When your home stays warm without trouble and your energy bill stays stable, you’ll be glad you took the time. Fall in Charlottesville can be beautiful. Make it comfortable, too.

As fall approaches, keeping your HVAC system in top shape becomes even more important. Let All-Temp Heating & Cooling help you maintain a cozy home efficiently. For expert guidance and reliable service, explore our HVAC maintenance in Charlottesville offerings. Our experienced team is ready to ensure your system is prepared for the chillier months ahead.