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HVAC Maintenance Guides

Why MERV 13 Filters Are Choking Older HVAC Systems

The 2026 MERV 13 filter mandate boosts air quality yet burdens legacy HVAC systems with resistance issues, leading to poor airflow, surging bills, and repair needs.

Stanley Johnson

Mar 9, 2026

7 min read

hvac problems Regulations

HVAC Maintenance Guides

Why MERV 13 Filters Restrict Your HVAC Airflow

High-efficiency MERV 13 filters offer superior air cleaning but may overwhelm standard HVAC systems, causing restricted airflow, elevated energy costs, uneven heating or cooling, and accelerated wear. This guide explains the impacts and provides strategies to select appropriate filters that balance filtration with system performance.

Brent Barrett

Jan 7, 2026

6 min read

maintenance problems

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