How often should I replace my HVAC air filter?

Standard 1-inch filters need replacement every 1–3 months; thicker 4–5-inch media filters last 6–12 months. Homes with pets, allergies, smokers, or nearby construction should use the shorter end of each range.

A $20 Filter Protects a $10,000 System

A clogged filter strangles airflow — freezing coils in summer, overheating furnaces in winter, and raising bills year-round. It is the single cheapest piece of HVAC maintenance and the most commonly neglected. Maintenance plan visits include filter replacement so it never gets forgotten.

Your Local Air Quality and HVAC Experts

All Set HVAC serves Arlington Heights and the Chicago Northwest Suburbs as the local expert in air quality testing, HVAC maintenance plans, and new heating and cooling installations. We find the cause instead of chasing symptoms, and we stand behind every job with the All Set Guarantee. Schedule your $99 Air Score Test at (847) 807-6100 today.