FAQs
ZC Willis Heating & Cooling
How often should I have my HVAC system serviced?
We recommend scheduling maintenance for your system twice annually—once in spring for your cooling system and once in fall for heating. This regular service helps maintain efficiency, ensures safety, and extends the lifespan of your equipment.How long does an HVAC system typically last?
With consistent maintenance, you can expect your HVAC system to operate effectively for 12-15 years. Systems that receive excellent care or are higher-quality models may continue functioning beyond this timeframe.What are signs that my HVAC system needs repair?
Be alert for unusual sounds, diminished airflow, inconsistent temperatures throughout your home, increasing energy costs, systems that turn on and off frequently, or any unusual smells coming from your vents.What size HVAC system do I need for my home?
Determining the appropriate system size depends on several factors including your home's square footage, insulation quality, local climate conditions, and the layout of your residence. We recommend a professional Manual J load calculation to ensure you get precisely the right size for optimal performance.How often should I replace my air filter?
Air filters typically need replacement every 1-3 months. The frequency varies based on your system usage, whether you have pets in the home, and if anyone suffers from allergies or respiratory conditions.



