energy star windows update
TRANSCRIPT
ENERGY STAR® for Windows, Doors,
and Skylights
Program Update
WDMA Technical Conference
Grand Rapids, MI
June 21, 2011
Agenda
• Product Testing
– IG Certification
– Verification of Products
• Next ENERGY STAR Spec (Phase 2)
– Completed Steps
– Tentative Timeline and Next Steps
• ENERGY STAR “Most Efficient”
• ENERGY STAR New Homes Version 3
• Questions
Product Testing
IG Certification
• Success for ENERGY STAR program
• Helps ensure quality of ES fenestration
products
• Problems are being found
Product Testing
Product Verification Testing
• New ES Requirement for all ES product
categories
• Part of ES 3rd Party Certification
• Revised ES Partner Commitments
• New ES Brand Promise
Product Testing
Product Verification Testing (Con’t)
• NFRC “Blind Verification Program”
– Blind to Manufacturers
– NFRC Developing with EPA input
– Update given at NFRC meeting
– Begin with some testing Fall 2011
• Economical inspections and tests
– Destructive and non-destructive tests
Next ES Specification (Phase 2)
• Energy Saving Criteria
– U-Factor Levels for windows
• Closely examining feasibility, availability, and cost of
using Krypton and Triples in North
• Must (at a minimum) match IECC 2012 in South
– SHGC Levels
• Preliminary analysis indicates much lower average
SHGCs across all products
• Must (at a minimum) match IECC 2012 in South and
South-Central
Next ES Specification (Phase 2)
• Orientation and Shading
– Expand ES basic consumer education
• Exemptions
– Industry make case after initial criteria released
Next ES Specification (Phase 2)
• Daylighting criteria for TDDs & Skylights
– Following NFRC developments
• Life Cycle Analysis
– Unlikely take into account this revision
– Preliminary analysis done by EPA using energy
intensity by industry sector but results are not
clear and assumption refinement is required. It
is unclear if this method is even useful.
– Athena Institute Study is cancelled
Next ES Specification (Phase 2)
• Installation Requirements
– Include instructions with product
– Detailed instructions on company website
• Structural Requirements
– Some manufacturers have requested NAFS
• Unlikely in this revision
– Concerns about long term durability for new
technologies using existing tests
Next ES Specification (Phase 2)
• Air Leakage
– Establish maximum of 0.3 cfm/ft2 in the ES
specification
• Matches code requirements (2009 IECC)
– Helps ensure product quality, energy
performance, and customer satisfaction
– Formatting air leakage in NFRC CPD
– Consider how to indicate on NFRC label
• Standard Format
• Hallmark/Gold Label likely to be acceptable
Completed Steps
• Initial stakeholder feedback
• NFRC CPD analysis
• Product availability analysis
• Market projection rates
• Invitation to share cost data sent to all
stakeholders
– Opportunity for stakeholders to provide
direct input into criteria analysis
Tentative Timeline
Milestone Timeframe
Analysis and Research Summer 2011
Preliminary Criteria Distributed Fall 2011
Additional Analysis and ResearchSummer – Winter
2011
Stakeholder Meeting Early 2012
Finalize Criteria Spring – Fall 2012
Phase 2 Criteria Take Effect Fall 2013
Next Steps
• Continue working with NFRC to
– Establish Blind Verification Program Process
– Explore Air Leakage reporting and labeling
• Door and Skylight Analysis
–Feasibility analysis
– Invite feedback on cost implications
Next Steps (continued)
• LBNL to complete energy savings
analysis
• Offer criteria ranges for consideration
–Windows first
–Doors and skylights later
• Calculate cost-effectiveness & payback
• Compile analysis & release draft criteria
ENERGY STAR Most Efficient
• March 16, 2011 EPA released proposal for
a series of ES “Most Efficient” Products
–HVAC (furnaces, A/C, Heat pumps)
–TVs
–Clothes Washers
–Refrigerators & Freezers
• Comments were due April 6, 2011
ENERGY STAR Most Efficient
• Criteria
–Truly exceptional performance (leading edge)
–Geographically appropriate requirements
–High quality products
–Not available in all configurations and sizes
• No “cost effective” criteria
• EPA and DOE will discuss the possibility
of a “Most Efficient” specification for
windows for 2012
ENERGY STAR New Homes
• Currently in a transition period (Ver 2.5)
• New spec (Ver 3) in place by Jan 1, 2012
• 2 Options under Ver 3
–ES Prescriptive Path requires ES spec for
windows, doors, and skylights
–ES Performance Path uses the “rating” of the
Prescriptive Path house to define the
performance target. Partners can mix and
match upgrades to meet the target.
• Cannot go lower that 2009 IECC specs
ES New Homes – Exceptions for
Windows, Doors, and Skylights
• Typical 2009 IECC Exceptions (Section 402.3)
– U-factor can be area-weighted average
– SHGC can be area-weighted average
• For fenestration products over 50% glazed
– 15 sqr ft of glazed fenestration is exempt from U-
factor and SHGC reqs (Not included in averages)
– One 24 sqr ft door exempt from U-factor requirements (Not
included in averages)
• Fenestration used for Passive Solar Design is
exempt from U and SHGC under certain
conditions (within 45 of true south)
ENERGY STAR New Homes Ver. 3 Timeline
Questions?
Contact Information
Doug Anderson
U.S. Environmental Protection Agency
Emily Zachery
D&R International
Current Criteria
Current Criteria