When temperatures jump between chilly and warm in one day, it can be difficult to stay comfortable. When you run AC and heating on the same day, you should do it carefully. McGee Heating & Air in Anderson, SC wants you to understand how to switch from cooling to heat safely. Modern HVAC systems can handle changes between heating and cooling. However, how you switch matters. All it takes is a few simple steps to keep your system efficient and prevent early wear when managing seasonal weather changes.
What Happens When You Switch From AC to Heat?
Air conditioning and heating rely on the same air ducts, blower motor, and other components to regulate indoor comfort, but they move heat in opposite directions. Your AC removes heat and humidity from the air, while your heating system adds warmth.
Switching from AC to heating without a short pause can cause sudden temperature changes inside your HVAC system ducts and air handler. The system’s metal components expand and contract as they warm up or cool down. For this reason, before switching modes, it is a good idea to turn your HVAC system off for about ten minutes. This gives the metal components in your HVAC system time to reach the ambient temperature and helps reduce stress on internal parts.
Is It Safe?
Yes, it is safe, depending on your system and its age. The real issue comes from frequent mode changes. Turning the settings back and forth several times a day can increase energy use and strain motors.
During spring or fall, mornings may be cold and afternoons hot. In those conditions, switching once or twice a day is fine. Just let your system rest between changes. Occasional AC and furnace same-day use will not damage your HVAC system when handled properly.
How to Avoid Overworking Your System
Running AC and heating the same day is fine, but overworking your system is not. Your system experiences more stress when starting up than during regular operation. Too many changes may stress your system unnecessarily. It may also contribute to higher energy bills. You can avoid these pitfalls by following a few habits.
Use Fresh Air When Possible
Open windows during mild weather instead of running your HVAC system. Doing so gives your system a break and freshens your home.
Keep Steady Indoor Temperatures
Choose a temperature range, such as 68 to 74 degrees. Stick with it to keep your HVAC system from overworking.
Replace Filters Regularly
Clean airflow helps your system switch between modes more easily. Experts recommend changing your HVAC filters at least every three months. However, you may need to swap yours out more often. For instance, having pets and the number of people who live in your home can affect how often filter changes are needed. Many homeowners check their filters once a month to ensure they know when it is time for a fresh one.
Schedule Professional Maintenance
Seasonal tune-ups keep heating and cooling systems in proper working order and ensure they’re ready for sudden temperature changes. They also prepare ACs and furnaces for same-day use.
During a maintenance visit, our technicians clean and inspect vital components, check refrigerant or gas connections, and test system controls for safe operation. We also lubricate moving parts to reduce friction and tighten electrical connections. These steps improve energy efficiency, reduce strain on your system during mode changes, and help prevent unexpected breakdowns. During their visit, our technicians can also give you HVAC efficiency tips to reduce monthly bills.
Contact Your Local Heating and Cooling Experts
Modern HVAC systems can continue to perform well when switching from AC to heat on the same day. The goal is to protect your system by giving it breaks, maintaining consistent indoor temperatures, and seeking professional maintenance. By applying a few simple tips, you can protect your system’s performance and lifespan. In addition to annual tune-ups, you can count on our team for heating and cooling repairs and upgrades.
Contact McGee Heating & Air today to schedule HVAC services for your Anderson home. We keep your system operating safely and efficiently, no matter what the weather brings.
