What is a MERV Rating?

The MERV rating system was initially created by  ASHRAE in 1987. The purpose of the Standard is designed to determine the following attributes of air filters: Particle removal capability Resistance to airflow Expected operating life How is an Air Cleaner’s MERV Rating Determined? Air cleaners are given MERV ratings based on the results of a series…

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AHRI Endorses DOE Decision to Adopt ASHRAE Standards

The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) applauded two recent Department of Energy (DOE) final rules that adopt ASHRAE 90.1 efficiency levels for three-phase unitary products less than 65,000 Btuh, water-source heat pumps, commercial oil-fired storage water heaters, and packaged terminal air conditioners (PTACs). “Adopting ASHRAE 90.1 efficiency levels for these products is the most…

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The Naked Truth About Dirty Air

Understanding Indoor Air Quality   David B. Bell, CEO, UVCense Lisa A. Greenfield, Indoor Air Quality Expert and Advocate, FilterPro USA Companies and Waterloo Filtration Institute, WFI Ambassador in USA   Abstract In this paper we explore the critical issue of poor indoor air quality (IAQ), explaining its impact on human health, cognition, and productivity.…

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