How to Properly Transition Your HVAC System from Cooling to Heating in Newport News, VA

September 22, 2025

In Newport News, VA, September brings unpredictable weather. Hot afternoons often give way to crisp evenings, making it tough to rely on just one temperature setting. If your home isn’t ready to handle the change, you might notice inconsistent comfort or rising energy bills. This shoulder season is the perfect time to prepare your HVAC system so it’s ready to transition from cooling to heating.

Why Proper Preparation Matters

Flipping your thermostat from “Cool” to “Heat” may seem simple, but skipping key steps can strain your HVAC system. That strain can reduce its lifespan, cause avoidable repairs, or drive up your utility bills. September’s fluctuating temperatures require your system to operate efficiently in both directions; cooling one day and heating the next. Preparing now helps avoid abrupt transitions that lead to uneven performance, breakdowns or discomfort.

Step-by-Step Guide to Preparing Your System

To make sure your home stays comfortable and your system runs efficiently as temperatures shift, follow these essential steps to transition your HVAC system from cooling to heating:

1. Change or Check the Air Filter

Clean filters help both your cooling and heating systems run efficiently. A clogged filter restricts airflow, forcing the system to work harder to maintain comfort. It can also lead to hot and cold spots throughout the home. If you haven’t changed your filter in the last month, now’s the time. For homes with ductless systems, remember that most filters aren’t disposable; they need to be cleaned rather than replaced.

2. Test Your Thermostat Settings

Switch your thermostat from “Cool” to “Auto” or “Heat,” and test it to ensure it responds appropriately. A few test cycles now can save you from surprises on the first cold night. Consider upgrading to a programmable or smart thermostat if you haven’t already. These devices help maintain consistent temperatures and reduce energy usage by adjusting settings when you’re away or asleep.

3. Schedule Heating System Maintenance

Fall is the best time to book a professional HVAC tune-up. Waiting until October or November may mean longer appointment windows due to high demand. A fall maintenance visit typically includes checking the burner, inspecting the heat exchanger, tightening electrical connections, cleaning components, and ensuring safe system operation. These inspections help prevent mid-season breakdowns and optimize energy efficiency.

4. Check for Air Leaks or Insulation Issues

Even a well-tuned HVAC system can’t overcome drafty windows or poor insulation. Use weatherstripping or caulk to seal gaps around windows and doors. Check your attic insulation to ensure it’s adequate. Adding more insulation can significantly reduce heat loss during colder months. This step supports your HVAC system and improves indoor comfort.

Signs You Might Need an HVAC Upgrade Before Winter

Is your system ready for another season? If you’ve experienced any of the following, it might be time to explore a system replacement:

Uneven temperatures from room to room
A system that’s 10–15 years old
Frequent service calls or breakdowns over the past year

Newer systems are more efficient, offer better humidity control, and may qualify for utility rebates. An HVAC professional can assess your current setup and recommend whether a replacement makes sense before winter arrives.

Bonus Tips for Coastal Homes in Hayes, VA

Homes near the coast face a few unique challenges. Salt air can speed up corrosion, especially on outdoor HVAC components. Scheduling a corrosion check as part of your fall maintenance can help protect your investment. It’s also a good time to test your generator (if you have one) to ensure you’re ready for early-season storms that could knock out power.

Be Ready Before Temperatures Drop

Don’t wait for a cold snap to find out your heating system isn’t working as it should. At Peninsula Heating & Air, we offer seasonal transition services to help you prepare your system the right way. Whether you need a fall tune-up or want to take advantage of our heating system maintenance, now is the time to schedule. Book your appointment before October to beat the seasonal rush and keep your home cozy and efficient all season long.

Image provided by Canva