Gaining Momentum On Efficiency: Next Steps in the 2021 IECC Update - June 25, 2019 Webinar - New ...
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
Gaining Momentum On Efficiency: Next Steps in the 2021 IECC Update June 25, 2019 Webinar
Benefits of Energy Codes
• Meet energy and climate goals
• Lower utility bills to reduce risk to energy burdened
households and businesses
• Address long term affordability for owners and tenants
• Encourage manufacturers to produce more efficient
equipment
• Achieve energy independence - Buildings use 40% of
energy and 70% of electricity in the United States!
2
Energy Efficient Codes Coalition
Eric Lacey Eric Makela Dan Bresette
Chairman Associate Director Vice President of Policy
Responsible Energy Codes Alliance New Buildings Institute Alliance to Save Energy
3
2021 IECC Timeline
Residential and Commercial Code Proposals Due
January 14 to ICC
March 4 Proposals Made Available by ICC
By March 29 Registering with ICC
Testifying in Favor of Energy Efficiency at
April 28 to May 8 ICC Committee Action Hearings
July 24 Public Comments due to ICC
Assigning Governmental Member Voting
September 23 Representatives
Testifying in Favor of Energy Efficiency Proposals
October 23 to 30 at ICC Final Action Hearings
Late November Voting Online for Energy Efficiency Proposal
© New Buildings Institute 2019
Update on Residential Proposals
for the 2021 IECC
Dan Bresette, Energy Efficient Codes Coalition
Eric Lacey, Responsible Energy Codes Alliance
1
Did the Committee Move the Needle on Efficiency?
• IECC-Residential Committee favored moderate improvements in
energy efficiency and the elimination of loopholes
• Committee also rejected most major rollbacks
• Big improvements in efficiency were narrowly disapproved
2
Governmental Member Voting in November
• 33.4% votes to stop major rollbacks
• 50%+1 votes to maintain/moderately improve IECC & stop rollbacks
• 66.7% votes to make major improvements
3
Major Rollbacks Disapproved by Committee
(Need 33.4% GMVR votes)
• Performance Path Equipment Trade-offs (RE175, RE176, RE179)
• Performance path Appliance and Solar Trade-offs (RE152, RE156)
• LBA Equipment Trade-offs/Points Proposal (RE208)
• Sampling Protocols, Elimination of Backstops, etc.
4
Improvements Committee Recommended for Approval
(Need 50% GMVR votes)
• Lighting Efficiency (RE7)
• Fenestration U-factors (RE35)
• Duct tightness testing & maximum backstop (RE112, RE115)
• Elimination of prescriptive loopholes for floors (RE34), walls (RE52)
• Improved fenestration SHGC backstop (RE105)
5Improvements Committee Recommended for Approval
(Need 50%+1 GMVR votes)
• HRV/ERV Required in cz 7-8 (RE139)
• Controls for exterior lighting (RE149)
• Improved requirements for replacement lighting (RE218)
• Mechanical ventilation efficiency improved (RE133, RE134)
6Clarifications/Options Committee Recommended for Approval
(Need 50%+1 GMVR votes)
• Air leakage trade-up (RE96)
• ERI backstop UA approach (RE150)
• Reorganization of “mandatory” provisions (CE42 Part 2)
7Rollbacks Committee Recommended for Approval
(Need 50%+1 GMVR votes)
• Load Calculation-Based Compliance Path (RE17)
• Duct Testing to Outdoors (RE119)
• Wall insulation loophole (RE40)
• Skylight loophole in performance path (RE161)
• Tropical Climate Zone Expansion (CE54 Part 2)
8Major Efficiency Improvements Disapproved by Committee
(Need 66.7% GMVR votes)
• EECC & NBI Flex Points/Add’l Efficiency Options (RE206, 207, 209)
• Prescriptive Insulation Improvements (RE29, RE32, RE33, RE36)
• Fenestration SHGC Improvements (RE30, RE37)
• Performance Path & ERI Improvements (RE151, 182, 191, 192)
• Zero Energy Appendix (RE223), EV-Ready (RE146)
9Flex Points/Additional Efficiency Options (RE206, RE207, RE209)
• ~ 5% efficiency improvement
• Designed to be scalable to fit a jurisdiction’s efficiency or
sustainability needs.
• Designed to work with other improvements that may be incorporated
separately into 2021 IECC.
• May be adopted as improvement to earlier versions of the IECC.
1011
Residential Zero Energy Appendix Proposal
ENERGY RATING INDEX
ENERGY RATING INDEX
including onsite power
CLIMATE ZONE not including onsite
(as proposed)
power
1 43 0
2 45 0
3 47 0
4 47 0
5 47 0
6 46 0
7 46 0
8 45 0
a Thebuilding shall meet the mandatory requirements of Section R406.2, and the building thermal envelope shall be greater
than or equal to the levels of efficiency and SHGC in Table R402.1.2 or Table R402.1.4. of the 2015 International Energy
Conservation Code.13
ICC IECC Code Hearings Update Eric Makela New Buildings Institute
Major Commercial Proposals
Major changes • High output water
• Clarification and heating equipment
restructuring • Controlled
• Fenestration efficiency receptacles
• Opaque envelope • Lighting efficacy
efficiency • Lighting power
• Air leakage density
• C406 Points
• Ready and resilientClarification and Restructuring • Moves “Mandatory” provision designations to Section C407 (CE42) • ASHRAE 90.1 Climate Zone updates (CE36)
Opaque Envelope Changes
1 2 3 4 EXCEPT MARINE 5 AND MARINE 4 6 7 8
Climate Zone All Group All Group All Group All Group All Group All Group All Group All Group
other R other R other R other R other R other R other R other R
Walls, below grade
R-
Below-grade R-7.5ci R-7.5ci R-7.5ci R-7.5ci R-10ci R-10ci R-10ci
NR NR NR NR NR NR R-7.5ci R-7.5ci 12.5ci
walld R-10ci R-10ci R-10ci R-15ci R-15ci R-15ci R-15ci
R-15ci
Floors
R- R- R- R- R-
R-10ci R-10ci R-15ci R-
10.4ci 12.5ci 12.5ci 12.5ci 16.7ci R-15ci
Masse NR NR R-6.3ci R-8.3ci R-10ci R-10ci R- R- R- 16.7ci
R- R- R- R- R- R-23ci
14.6ci 14.6ci 20.9ci R-23ci
16.7ci 16.7ci 16.7ci 16.7ci 20.9ci
NR NR R-30 R-30f R-30f R-30f R-30f R-30f
Joist/framing R-30 R-30 R-30 R-30 R-30 R-30 R-30 R-30
R-13 R-13 R-38 R-38 R-38 R-38 R-38 R-38
Slab-on-grade floors
R-15 R-15 R-15 R-20
R-10 R-10 R-10 R-10 R-10 R-15
for for for for
for for for for for for
NR 24” 24” 24” 24”
24” 24” 24” 24” 24” 24”
R-10 below below below below
Unheated slabs NR NR NR NR NR below below below below below below
for 24” R-20 R-20 R-20 R-25
R-15 R-15 R-15 R-20 R-20 R-20
below for for for for
for 24” for 24” for 24” for 24” for 24” for 24”
48” 48” 48” 48”
below below below below below below
below below below below
• Code Change Proposal Numbers: CE61, 63, 64, 66, 68Fenestration U-factor Changes
TABLE C402.4
BUILDING ENVELOPE FENESTRATION MAXIMUM U-FACTOR AND SHGC REQUIREMENTS
CLIMATE ZONE 1 2 3 4 EXCEPT 5 AND 6 7 8
MARINE MARINE 4
Vertical fenestration
U-factor
Fixed 0.50 0.50 0.45 0.46 0.42 0.38 0.36 0.38 0.36 0.36 0.34 0.29 0.29 0.26
fenestration
Operable 0.65 0.62 0.65 0.60 0.60 0.54 0.45 0.45 0.43 0.42 0.37 0.36 0.37 0.32
fenestration
Entrance doors 1.10 0.83 0.83 0.77 0.77 0.68 0.77 0.63 0.77 0.63 0.77 0.63 0.77 0.63 0.77 0.63
Skylights
U-factor 0.75 0.70 0.65 0.55 0.50 0.50 0.50 0.50 0.44 0.50 0.41
• Code Change Proposal Numbers: CE84, 85 & 87Fenestration SHGC Changes
TABLE C402.4
BUILDING ENVELOPE FENESTRATION MAXIMUM U-FACTOR AND SHGC
REQUIREMENTS
SHGC
Orient SEW N SEW N SEW N SEW N SEW N SEW N SEW N SEW N
ationa Fixed Opera Fixed Opera Fixed Opera Fixed Opera Fixed Opera Fixed Opera Fixed Opera Fixed Opera
ble ble ble ble ble ble ble ble
PF < 0.25 0.33 0.25 0.33 0.25 0.33 0.36 0.48 0.38 0.51 0.40 0.53 0.45 NR 0.45 NR
0.2 0.23 0.21 0.23 0.23 0.33 0.33 0.38 0.34 0.40 0.36 0.40 0.36
0.2 ≤ 0.30 0.37 0.30 0.37 0.30 0.37 0.43 0.53 0.46 0.56 0.48 0.58 NR NR NR NR
PF < 0.28 0.25 0.28 0.28 0.40 0.40 0.46 0.41 0.48 0.43 0.48 0.43
0.5
PF ≥ 0.40 0.40 0.40 0.40 0.40 0.40 0.58 0.58 0.61 0.61 0.64 0.64 NR NR NR NR
0.5 0.37 0.34 0.37 0.37 0.53 0.53 0.61 0.54 0.64 0.58 0.64 0.58
• Code Change Proposal Numbers: CE84, 85 & 87Envelope Leakage Testing and Verification
• Buildings other than Group R and Group I
occupancies required to be leakage testing to meet
0.4 cfm/ft2 of envelope.
• Exceptions for building size and climate zones
• Group R and I to be tested to meet 0.30 cfm/ft2
• Envelope air barrier verification for all buildings not
tested
• Code Change Proposal Numbers: CE96, 97 & 99Controlled Receptacles
• Requires automatic controls for 50% of
receptacles installed in
• Enclosed offices, conference rooms,
breakrooms, copy rooms,
classrooms
• Provide either split controlled
receptacle or controlled receptacle
within 12” of uncontrolled receptacle
• First provision in the code that focuses
on plug loads (CE216)
From NEMALight Efficacy Upgrade
• Increases efficacy
requirement for lighting in
dwelling units to:
• 65 lu/W for lamps
• 45 lu/W for luminaires
• CE162
From US DOEReduced LPD
• Building Area Method LPD reduced in
almost all categories (CE206)
• Space-by-Space LPD reduced (CE208)
• Approximate 5% reduction in energy
savings over 2018 IECCC406 Points Option • Current C406 Point Options savings inequality
C406 Points Option C406 Points Option • Reduced LPD • Enhanced lighting controls • Extra area daylight responsive controls • Efficient kitchen equipment • CE218, 226, 229, 235 & 240
Ready and Resilient • Renewable definition for commercial • Commercial zero code renewable appendix (Arch 2030)
Ready and Resilient
• EV Ready and Capable for commercial buildings
EV Capable: conduit,
breaker space
EV Ready: conduit, breakers
space, overcurrent protection,
wire, outlet2
✓
✓
✓
✓
✓
✓
34
Resources
NEXT 2021 IECC WEBINAR is September 19, 2019!
EECC website: www.energyefficientcodes.org
ICC website: www.iccsafe.org
NBI Codes and Policy website:
https://newbuildings.org/code_policy/2021-iecc-base-codes/
© New Buildings Institute 2019You can also read
