It's recommended to have your HVAC system serviced at least once a year to ensure optimal performance. Ideally, scheduling maintenance in both the spring and fall can prepare your system for the upcoming seasons.

Common signs include reduced airflow, strange noises, foul odors, inconsistent temperatures, frequent cycling on/off, and increased energy bills. Any of these may indicate a need for professional inspection and repair.

The lifespan of an HVAC system can vary based on usage, maintenance, and the quality of the system. On average, a well-maintained system can last  12-14 years.

Regular maintenance, such as changing filters, cleaning vents, and scheduling professional tune-ups, can significantly enhance efficiency. Additionally, upgrading to a programmable thermostat and ensuring proper insulation in your home can help.

The size of the HVAC system depends on various factors, including the size of your home, insulation, climate, and more. A professional HVAC technician can perform an assessment to determine the appropriate size for your specific needs.

Yes, there are several ways to improve indoor air quality, such as installing high-quality air filters, using air purifiers, maintaining proper ventilation, and scheduling regular HVAC system cleanings.

HVAC installation typically involves assessing the space, ductwork installation (if required), positioning the units, connecting electrical components, and thorough testing to ensure proper functionality.

While basic maintenance tasks like changing filters can be DIY, HVAC repairs should generally be left to trained professionals to avoid safety hazards, ensure proper repairs, and maintain warranties.

Seek recommendations from friends or family, check online reviews, verify licenses and certifications, and ensure the company provides transparent pricing and guarantees for their services.