In our experience, most systems should be serviced twice a year, once for cooling (spring) and once for heating (fall) to ensure efficiency, safety, and long-term performance.

 

Need to schedule an appointment with an HVAC company? Reach out to us today for your free estimate!

From our observations, with proper maintenance, most units last 12–15 years, while high-quality or exceptionally well-maintained systems can last even longer. According to the EPA, if your HVAC equipment is more than 10 years old or failing to keep your house comfortable, you should have it evaluated by an HVAC contractor—this helps determine if repairs can still be made or if it's time to start searching for a new system.

 

Have a unit that's reaching its end of life? Contact ZC Willis Heating & Cooling today to schedule your new air conditioning installation.

Common signs include strange noises, weak airflow, uneven temperatures, rising energy bills, frequent cycling, or unusual odors.

 

Call or submit our online contact form to get your free estimate on our AC repair services!

We've found that the right size depends on square footage, insulation, climate, and home layout. A professional load calculation (Manual J) ensures proper sizing. As a top HVAC company, our technicians will recommend the correct size.

 

Contact us today to learn more.

Based on our history, most filters should be replaced every one to three months, depending on usage, pets, and allergies.

 

Need help with the replacement? As a premier HVAC company, our technicians will assist. Give us a call!