How to Do the Wisconsin Switch-Over: When to Turn off the AC and Test the Furnace

As Wisconsin temperatures shift from warm afternoons to chilly mornings, homeowners need to prepare their HVAC systems for the change. Scheduling furnace maintenance in Madison, WI before the first cold spell gives our expert team an opportunity to inspect, clean, and test your heating equipment before you depend on it.

How to Shut Down the AC

You do not necessarily need to shut down the AC on the first cool day. Wisconsin fall weather can bring warm afternoons even when mornings are cold. Once temperatures consistently remain comfortable without air conditioning, especially as nights get colder, it is reasonable to stop using the AC.

When you are finished using the AC, set the thermostat to your desired heating temperature rather than leaving it in cooling mode. If your system has a dedicated outdoor disconnect, do not operate it unless your equipment instructions or a professional advises you to do so.

Instead, let our expert team handle equipment-specific shutdown steps during maintenance. Avoid covering the outdoor condenser with an airtight cover, which can trap moisture. Keep the unit free of leaves and debris, and follow the manufacturer’s recommendations for seasonal care.

Schedule Heating Maintenance

Fall is the ideal time to have your furnace inspected before the first real cold snap. Our expert team can check important components, inspect electrical connections, examine the heat exchanger and safety controls, clean needed areas, and make sure the system starts and operates properly. Heating maintenance can also identify developing problems while there is still time to address them, rather than discovering an issue when the furnace is needed most.

Replace the Furnace Filter

A clean air filter is one of the simplest ways to prepare for heating season. Check the filter before regular furnace use and replace it if it is dirty. A clogged filter can restrict airflow and make the system work harder. During heating season, check the filter regularly and follow the manufacturer’s replacement guidance. Homes with pets or significant dust may need more frequent attention.

Clear the Furnace Area

Take a look around the furnace before turning it on. Keep boxes, storage items, clothing, cleaning products, and other combustible or obstructive materials away from the equipment. Make sure supply and return vents are not blocked by furniture or other household items. A clear area gives technicians room to inspect the system and helps support proper airflow and safe operation.

Test Carbon Monoxide Detectors

Before the furnace runs regularly, test your carbon monoxide detectors and replace their batteries if needed. Make sure detectors are installed according to manufacturer guidance and that everyone in the household knows what an alarm means. Never ignore a carbon monoxide alarm; leave the home and seek emergency assistance if it sounds.

Make the Switch Safely

The AC-to-furnace transition is more than changing the thermostat setting. By scheduling heating maintenance with our expert team, replacing the filter, clearing the furnace area, and checking carbon monoxide detector batteries, you can head into Wisconsin’s heating season prepared.

You can always count on 24-Hour Home Comfort Services, your heating and cooling specialists.