What Has the New MERV Table Done to My Products? Michael Corbat, CAFS Engineering Manager Custom Filter LLC

What Has the New MERV Table Done to My Products?! Custom Filter LLC What Has the New MERV Table Done to My Products?! Michael Corbat April 7, 2016

Bio Engineering Manager at Custom Filter LLC 15 Years Experience in Filtration Development Bachelor of Science Engineering Management – Western Michigan University MBA from Northern Illinois University Chair of ASHRAE Standard 52.2 Secretary of ASHRAE Technical Committee 2.4 Voting Member of ASHRAE Guideline Committee 35 US Expert to ISO TC 142/Working Group 9 - Particulate air filter intake systems for rotary machinery and stationary internal combustion engines

Agenda 52.2 ISO 16890 Update Energy Usage Guidelines MERV Table Changes Other Changes ISO 16890 Update Energy Usage Guidelines

2015 Supplement MERV Table Changes 8 n/a 70 ≤ E3 9 E2 < 50 85 ≤ E3 10 50 ≤ E2 < 65 11 65 ≤ E2 <80 12 80 ≤ E2 90 ≤ E3 13 50 ≤ E1< 75 90 ≤ E2 14 75 ≤ E1 < 85 15 85 ≤ E1 < 95 16 95 ≤ E1 95 ≤ E2 95 ≤ E3

2015 Supplement MERV Table Changes 8 n/a 20 ≤ E2 70 ≤ E3 9 35 ≤ E2 75 ≤ E3 10 50 ≤ E2 80 ≤ E3 11 20 ≤ E1 65 ≤ E2 85 ≤ E3 12 35 ≤ E1 80 ≤ E2 90 ≤ E3 13 50 ≤ E1 85 ≤ E2 14 75 ≤ E1 90 ≤ E2 95 ≤ E3 15 85 ≤ E1 16 95 ≤ E1 95 ≤ E2

PLEATS - MERV Before MERV 8 MERV 8 MERV 8 E1 = 5 E2 = 35 E3 = 70

PLEATS - MERV After MERV 8 MERV 9 MERV 10 E1 = 5 E2 = 35 E3 = 70

MERV 13 is Easier MERV 12 E1 = 50 E2 = 85 E3 = 90 NOW IS A MERV 13!!

What to Look For Old Reports are allowed to be recalculated Must be 2012 or newer Must meet all requirements of 2015 supplement (Shedding and Humidity) Must have “Recalculated” and reprint date on report Must still contain original test information including date All new reports must contain language “52.2-2012 with 2015 Supplement”

Approved Addendum Addendum C – Must use optical particle counters Addendum E – Full test must be performed to use MERV Addendum F – All efficiency data sets must be published (12 channels at 6 efficiency tests)

52.2 Proposed Items Optional Appendix for multi-stage filter testing E values included in reporting value MERV 14 (E1>=75%, E2>=90%, E3>=95%) @ 1970 CFM 52.3?

52.2 Research Primary Project Independent Round Robin Repeat of ASHRAE RP-1088 Will follow inclusion of all changes Goal to determine ruggedness of test method

ISO 16890 Four Parts Part 1 Classification System Voted to Final Draft International Standard (FDIS) in March Part 2 Efficiency Testing Voted to FDIS in February Part 3 Dust Loading Voted to DIS in January Part 4 Discharge Method Likely fully published by end of 2015 or early 2016

ISO 16890 Data Calculation

ISO 16890 ≥ 50% ≥ 40% Group Name Requirement Class Reporting Value Emin(PM1) E(PM1) Emin(PM2.5) E(PM2.5) E(PM10) ISO Coarse ---- < 50% Arrestance ISO PM10 ≥ 50% ISO PM2.5 ≥ 40% ISO PM1

ISO 16890 Outputs Filter Rating Read ISO__%ePM__ Initial Pressure Drop PM value rounded down to closest 5% Initial Pressure Drop ePM1, ePM2.5, ePM10 (Average) ePM1 (min), ePM2.5 (min) Initial Arrestance First 30g or 0.6”WC Average Arrestance DHC

16890 Sample Data Initial DP = 0.35” WC Filter Rating ISO 70% ePM1 ePM1(min) = 41% ePM2.5(min) = 53% Initial Arrestance = 95% Average Arrestance = 99% DHC = 300g

Sustainability Both ISO and ASHRAE are handling ASHRAE GPC 35 ISO WG12 Both are in very early stages of work GPC 35 is requesting a research project for new loading dust Calculation portion is being worked on simultaneously