Filter efficiency rating used in HVAC systems.

  • Filter efficiency rating used in HVAC systems.
  • MERV 13 is now the trophy minimum for IAQ-conscious tenants.

MERV rating

MEP · US

Short definition

Filter efficiency rating used in HVAC systems.

Full definition

MERV 13 is now the trophy minimum for IAQ-conscious tenants. MERV 16+ for lab and clinical fit-outs. The retrofit cost is modest; the IAQ uplift is material.

Why this matters for Class A leasing

MERV rating is part of the mep vocabulary that institutional Class A occupiers, landlords, and advisers use across US markets. Understanding it correctly affects how you read lease documents, model occupancy economics, and benchmark deal terms across cities. Class A Atlas tracks the US definition alongside the global standard so cross-border occupiers can translate quickly.