As the leaves begin to change and the temperatures drop, many homeowners focus on preparing their heating systems for the colder months. But in our region, where fall weather can swing from warm afternoons to chilly evenings, your air conditioner may still see some use. Starting up your AC in the fall requires some work to keep it running efficiently and to extend its lifespan. Here are five important things to consider:
1. Check the Outdoor Unit for Debris
During late summer and early fall, leaves, twigs, and other debris can build up around your outdoor condenser unit. Before turning on your air conditioner, take a few minutes to:
- Clear away leaves, dirt, and grass clippings within at least two feet of the unit.
- Inspect the fins for damage or clogs.
- Make sure there’s proper airflow around the system.
Keeping the unit free from obstructions not only helps efficiency but also prevents strain on the motor and fan.
2. Inspect and Replace Air Filters
Air filters play a crucial role in maintaining both indoor air quality and system performance. Over the summer, they can become clogged with dust, pollen, and pet dander. A dirty filter can cause your system to work harder, reduce efficiency, and even lead to mechanical issues. Before running your AC:
- Check your filter for dirt and buildup.
- Replace it if it looks dirty or if it’s been more than 1–3 months.
- Consider upgrading to a high-efficiency filter for improved air quality.
3. Run a Quick System Test
Before the first warm fall day arrives, it’s a good idea to give your AC a quick test run. Turn the system on and let it run for 15–20 minutes. Pay attention to:
- Airflow – Is the air blowing strong and steady?
- Temperature – Is the air coming out cool?
- Noises – Do you hear any grinding, squealing, or rattling sounds?
Catching small issues early ensures you won’t be caught off guard when the weather suddenly heats up.
4. Schedule Seasonal Maintenance
Fall is an excellent time to schedule preventative maintenance. Professional HVAC technicians can:
- Inspect refrigerant levels.
- Clean the coils.
- Tighten electrical connections.
- Lubricate moving parts.
- Ensure your thermostat is calibrated correctly.
Seasonal maintenance extends the life of your unit, prevents costly repairs, and keeps your system running at peak efficiency.
5. Plan Ahead for Winterization
Even if you use your AC a few times in the fall, it’s smart to prepare it for winter. Once you’re confident you won’t need cooling again until spring:
- Turn off the power to the outdoor condenser unit.
- Cover the unit with a breathable cover to protect it from snow and ice.
- Check drainage areas around the unit to prevent water from freezing and causing damage.
By planning ahead, you’ll save yourself stress (and potentially money) when spring arrives.
Final Thoughts
Starting up your air conditioner in the fall isn’t just about comfort—it’s about maintaining efficiency and protecting your investment. By keeping your system clean, running periodic checks, and scheduling professional maintenance, you’ll ensure your AC is ready for both the occasional warm fall day and the long-term transition into colder weather.