Residential Weatherization and Ventilation Specs Subcommittee Updates Regional Technical Forum March 2 nd, 2010

Subcommittee Meeting Feb 18, 2010 (phone/gotomeeting) Attendees – Adam Hadley – Mark Jerome – Ted Haskell – Bruce Manclark – Stephanie Vasquez – Mark Johnson – David Hales – Tom Eckart – Jeremy Anderson – Kacie Bedney – Mark Percy – Bruce Carter – Lucinda Gilman – Paul Tschida Results 1.Group came to a consensus that ESG's Performance Air Testing and Sealing (PATS) Specifications meet/exceed the RTF's Air Sealing specifications 2.Began discussion on changes to the Residential Weatherization Specifications

ESG’s PATS Specifications - Overview Performance Air Testing & Sealing (PATS) Specifications Certified Technician Requirement Materials Specifications Application Requirements – How and where air-sealing is to be installed Measurement Requirements – Blower Door setup and testing protocol Indoor Air Quality – CAZ testing 5 Pa depressurization limit for natural draft combustion devices 15 Pa depressurization limit for assisted draft combustion devices – CO Monitor Required – Ventilation requirements Closely follows ASHRAE 62.2, with an exception to ensure RTF spec is met if 62.2 calls for a smaller whole-house fan.

Subcommittee Recommendation RTF to consider ESG’s PATS spec equivalent to the RTF’s Air-Sealing Specification Decision?

Subcommittee Meeting March 1 st, 2010 – (in-person 10am-3pm) Attendees – Bruce Manclark – Rich Arneson – Bruce Carter – Mark Jerome – Adam Hadley – David Hales – Zach Erdmann – Ted Haskell – Adam Hadley Results (YES!!!) Agreement on Ventilation Specification direction & program guidance Further Wx Specs Discussion – Mark Johnson – Kacie Bedney – Warren Cook – Brady Peeks – Bob Davis – Jeremy Anderson – Tom Eckhart – David Baylon

(near) Consensus Ventilation Specification Outline Ventilation system not required Full disclosure always required: insulation, windows, duct seal, and air seal – Disclose that we don’t and can’t really know the best IAQ solution – Provide general information on source control and ventilation strategies – Provide specific language on how to meet (get close to meeting) ASHRAE 62.2 recommended ventilation levels The nationally recognized standard, simplified – Provide RTF recommended ventilation standard Based on 62.2, but very simplified; with energy-conscious tradeoffs CO alarm always required where combustion equipment Would apply equally to manufactured homes

Other Program Direction Two levels of savings available for performance based air sealing – All cases Savings for tightening down to 0.25 ACH n (0.25 still up for debate) allowed – Tightening beyond 0.25 ACH n Savings only claimable if RTF approved ventilation system is installed Reason: keeps us from encouraging tightening without ventilation Efficient fan spec may provide an additional deemed energy savings measure

Proposed RTF Work Products Disclosure Document Language – Guidance for meeting 62.2 – Guidance for meeting RTF’s IAQ/Ventilation standard RTF IAQ/Ventilation Standard Savings Calculations – “Beyond 0.25” savings – Efficient fan savings What We’re looking for from the RTF today Are we heading in the right direction? Continue with efforts?

Weatherization Specifications Update Intent of Update – Remove program language from the specs – Remove unnecessary specifications – Update references to outdated standards – Update specs to current practices – Better integrate Weatherization Specifications, Ventilation Specifications, Air-Seal Specifications, and Duct Specifications Needs more work No Recommendation, so no action needed from the RTF