Frequently Asked Questions

At least once a year. Ideally, schedule it in the spring or fall, before the cooling or heating season begins.

Regular maintenance improves energy efficiency, extends the life of your system, reduces the chance of breakdowns, improves indoor air quality and keeps your home comfortable.

Common signs include unusual noises, uneven heating or cooling, frequent on-off cycling, poor airflow, strange odors or a jump in your energy bills. If you notice any of these, have your system inspected by a professional.

You can handle basic tasks like cleaning or replacing air filters. More complex work — checking refrigerant levels, inspecting electrical components and cleaning internal parts — should be done by a professional technician.

Typically every 1 to 3 months, depending on the type of filter, the level of dust and pollutants in your home, and how much your system runs.

Duct cleaning is generally recommended every 3 to 5 years. If you notice excessive dust, mold or pests in your ducts, have them cleaned sooner.

A leak can mean a clogged condensate drain or a malfunctioning component. Turn the system off and call a professional to inspect and repair it promptly.

On average, 10 to 15 years. Proper maintenance, regular servicing and quality installation all help extend its lifespan.

Yes. Programmable thermostats let you set temperature schedules that cut energy use and costs, and give you more control and convenience.

Set your thermostat to a reasonable temperature, seal air leaks around windows and doors, make sure your home is well insulated, use ceiling fans to circulate air and keep vents unobstructed.