Routine HVAC care and filter maintenance

How often to check your filter

Many households check filters monthly and replace them every one to three months. Homes with pets, recent renovation dust, or allergies often benefit from checking more frequently. Always follow your equipment and filter manufacturer guidance.

• Write the filter size and the arrow direction on a note near the unit.
• Keep one spare filter on hand.
• Note the date of each change on your maintenance calendar.

A simple seasonal calendar

Spring: cooling startup checks. Summer: outdoor unit clearance. Fall: heating startup checks and detector tests. Winter: filter checks and humidity awareness.

When to call a professional

Anything involving refrigerant, gas lines, electrical components, or sealed equipment panels belongs with a licensed professional you choose and verify independently.