Two Numbers That Tell You Almost Everything About Your Building’s Air Building managers and facility teams often have dashboards full of metrics — energy consumption, equipment runtimes, maintenance schedules, occupancy data. But when it comes to indoor air quality, two measurements provide more actionable information than all the others combined: CO2 concentration and relative humidity.
What the MERV Rating System Actually Measures MERV — Minimum Efficiency Reporting Value — is the filter performance standard established by ASHRAE (Standard 52.2) that measures how effectively an air filter captures particles across twelve specific size ranges, from 0.3 microns up to 10 microns. The rating scale runs from MERV 1 (nearly no filtration)
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