Frequently Asked Questions

  • How often should I replace my furnace filter?

    Most furnace filters should be replaced every 1-3 months depending on usage and filter type. High-efficiency filters may last longer, while homes with pets or allergies need more frequent changes.

  • What are the benefits of mini-split systems?

    Mini-splits offer energy efficiency, flexible climate control for individual rooms, and no ductwork requirements. They're perfect for home additions, older homes, or areas where traditional HVAC isn't practical.

  • When should I schedule HVAC maintenance?

    Schedule heating maintenance in fall and cooling maintenance in spring before peak seasons. Regular maintenance prevents breakdowns, improves efficiency, and extends equipment lifespan significantly.

  • How do I know if my ductwork needs repair?

    Signs include uneven temperatures between rooms, higher energy bills, excessive dust, and visible damage to ducts. Poor airflow or strange noises from vents also indicate potential ductwork issues.

  • What factors affect HVAC system installation costs?

    System size, efficiency rating, home layout, existing ductwork condition, and local permits influence costs. Higher efficiency units cost more upfront but provide long-term energy savings.

  • Why is my water heater making strange noises?

    Rumbling or popping sounds often indicate sediment buildup in the tank. Flushing the tank can help, but persistent noises may signal the need for professional inspection or replacement.

  • Can I install a new thermostat myself?

    Basic thermostat replacement is possible for handy homeowners with proper wiring knowledge. However, smart thermostats or complex systems require professional installation to ensure proper function and safety.

  • What's the difference between repair and replacement?

    Consider replacement if repair costs exceed 50% of a new unit's price, your system is over 15 years old, or frequent repairs are needed. Newer systems offer better efficiency and reliability.

  • How can I improve my home's air quality?

    Regular filter changes, proper ventilation, humidity control, and air purification systems help. Professional duct cleaning and sealing also reduce dust and allergens throughout your home.

  • What should I do if my AC stops cooling?

    Check the thermostat settings, replace the air filter, and ensure the circuit breaker hasn't tripped. If these don't resolve the issue, contact a professional to avoid further damage.

Thank you for visiting the website of Smith's Heating & Air. We’re committed to providing local HVAC services in and around Waverly, Mason and Eaton Rapids, MI. If you need help with heating, air conditioning, duct work, water heaters or mini-split projects, we’d love to hear from you.


Please use the form on this page to email us. You can also call 517-410-9682 to speak with us immediately.