HVAC Filters

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Quick Guide

Choose a MERV that fits your system: 8–11 for most homes, 13 for finer capture, higher only if your HVAC supports it.
Find your size: Check the old filter (printed size) or measure the return grille.
Replace regularly: 1″ filters: every 1–3 months; thicker media: longer.

Jumping from MERV 8 to 16 can restrict airflow on some systems. If rooms feel stuffy, step down a rating.

Do thicker filters last longer?

Generally yes. 2–5″ media filters hold more material and can last 3–6+ months.

Are washable filters worth it?

They can reduce waste, but often filter less than high-MERV disposables. Check performance specs.