Energy Efficiency in Housing and Small Buildings General Overview

1. Energy Efficiency in Housing and Small BuildingsGeneral Overview Progress Report - SCEEB April 20th 2011

2. Outline • The Project • Scope and Policy • Prescriptive Path • Building Envelope Requirements • HVAC & SWH • Performance Path

3. Code Committees • CCBFC • Standing Committee on Housing and Small Buildings • Standing Committee on Energy Efficiency in Buildings • Joint Task Group in Housing and Small Buildings • Performance Compliance • Small Buildings • Building Envelope (Housing) • HVAC & Service Water Heating (Housing) • Code Coordination

4. Partnership between CCBFC and NRCan • NRCan, CCBFC and NRC collaborate at all levels • NRCan staff is presented on all sTG and JTG and CCBFC • CCBFC members and/or CCC staff are represented on ERS, R2000 and EnergyStar committees • CCC and NRCan Staff have regular meetings on Energy Efficiency projects • Relationship between Code and ERS • The ERS (and HOT2000) are important tools for code compliance • sTGs develop language to permit HOT2000 for code compliance • Reference specific tools or ratings might be administrative requirements

5. Progress / Schedule • February 2010 JTG-EEHSB • April 2010 SC-HSB • June 2010 SC-HSB teleconference • November 2010 SC-HSB • January 2011 JTG-EEHSB • February 2011 JTG-EEHSB • April 2011 JTG-EEHSB • May 2011 SC-HSB (and SC-EEB) • September 2010 SC-HSB (and SC-EEB) • Oct – Dec 2011 Public Review • January 2012 JTG-EEHSB • February 2012 SC-HSB • April 2012 CCBFC approves changes • Dec 2012Publication

6. Project Size - PCFs • Between 14 and 38 proposed change forms • 3-5 Division A & Division C (similar or identical to NECB) • 1-3 large PCFs transferring revised MNECH97 Appendices B and C to the NBC (75% existing wording) • Between 10 and 30 PCFs for new Part 9 wording • Between 60 and 85 pages of appendix and code • 35 to 45 pages of Appendix Notes • 25 to 40 pages in the body of Part 9 • Existing wording on PCFs will be “None”

7. CCBFC/PTPACC Scope • Joint CCBFC/PTPACC Scoping Task Group • Locate requirements in Part 9 (not in MNECH) • Provide prescriptive and performance path • Address at a minimum: Building Envelope and HVAC • Avoid barriers to use of alternative energy sources (“renewables”) • Ensure energy efficiency for housing is forward looking • Provide prescriptive options for small buildings • Develop flexible framework for provinces • Use Current Construction as baseline (study) • Publish interim changes by 2012

8. CCBFC Policy Advice • CCBFC • Policy Advice approved by ballot – August 2010 • energy performance levels (working target of ERS 80) • objective-based analysis (objective-based provisions) • compliance path (prescriptive/performance) • energy sources (address energy used by the bldg) (no diff. req’s based on fuel source) • assembly constructions (no exceptions for assemblies) • costs and benefits (cost of constr. & energy saved) • fenestration to wall ratio (set max F/W ratio) • heat recovery (consider heat recovery ventilation) • occupancies (residential & non-residential)

9. Renewable Energy • CCBFC policy • “use NECB approach” • NECB approach &JTG Recommendation for EEHSB • Provide acceptable solutions where applicable • No barriers – no explicit permission or exemption • Renewable energy can be modeled in performance path (AHJ) • Address in flexible framework • Long Term Plan for EEHSB • Develop quantitative energy target • Possibly address primary energy • Plan: Provide credits for renewable on-site energy

10. Current Construction Practice • Baseline = Current Construction • Developed Current Practice Baseline • Survey received ~300 responses based on 2009 calendar year • Also considered other sources • CHBA Pulse Survey • HVAC Industry Sales figures • Data will be used as Baseline for • incremental construction cost • energy savings benefit • Single baseline across Canada

11. Current Construction Practice • Exterior Wall Insulation R20 Nominal • Wall framing 2x6 framing, 16” on center • Attic Insulation R40 Nominal • Airtightness 3.18 ac/h (average, nationally weighted) • Basement Walls Inside at full height with R12 • Floor Slabs Not insulated • Window glazing option Double glazed, low-e argon • Window Frame Vinyl • Gas furnace efficiency 90% efficiency furnaces • HRVs no HRV, no A/C, no heat pump • Thermostats programmable

12. Scope and Application NECB

13. Building Envelope • Prescriptive Thermal Requirements • Opaque Assemblies Above & Below Ground • Code: minimum effective RSI • Appendix: nominal R/RSI-values • Windows Doors & Skylights • max. U-values (2010 Energy Star) • min. ER values (not for skylights) • Various Compliance Paths • Insulation levels based on mechanical ventilation (no HRV) @ 2.5 ACH • Insulation levels based on HRV @ 2.5 ACH

14. Proposed Requirements • Locations by Climate Zone

15. Proposed Requirements

16. Proposed Requirements

17. Building Envelope • Windows, Doors and Skylights • Energy Star criteria 2010 • No defined term for “fenestration” • Exemptions • Storm doors exempt • 1 front door and attic/crawl space hatches U = 2.6 W/m²K • Garage door RSI = 1.1 m²K/W

18. Airtightness • Prescriptive construction details • Different approaches (poly, ADA, exterior sheathing) • Typical penetration and junctions • Testing for Assemblies • ULC S742 Air Barrier Assemblies • Provide junction details (mfg’s instructions) • Blower Door Test • Optional: Required Performance 2.5 ACH • Subject to policy discussion with CCBFC • Mandatory where 1.5 ACH are required

19. Airtightness • Prescriptive compliance path • General Requirements • Compliance, exemptions, cross references • Construction Details • Material values, continuity, sealants • Electrical Outlets and Switches • Sill Plates • Window-Wall Interface • Overhangs • Party Wall details • Chimney’s and duct’s penetration • ICF (top of the wall to attic ceiling)

20. HVAC and Service Water Heating • HVAC • HRVs • Not required for dwelling units • Where installed, min. efficiency required • Require dampers, thermostats • Outside ducts and piping insulated to above-grade wall • minimum equipment efficiencies • Gas Furnaces: 92% (AFUE) • Oil Furnaces: 85% (AFUE) • Standards and performance for other technology will be referenced: • heat pumps, • integrated systems • Combo systems (water and heating) *

21. HVAC and Service Water Heating • Service Water Heating • minimum equipment efficiencies • electric, gas, oil • tankless/storage tank type • solar water heaters included • pool heaters included • combo systems (water and heating) • storage tanks and re-circulating pipes need to be insulated • heat traps are required on top of water tanks • Solar domestic hot water system installation according to NPC and NBC Part 4

22. Performance Path • Prescriptive • Building envelope • HVAC & SWH • No trade-off across BE and HVAC

23. Performance Path • Performance Path • reference house built to prescriptive path (+ assumptions) =X

24. Performance Path • Performance Path • reference house built to prescriptive path (+ assumptions) • proposed houses will be modeled against reference result =X

25. Performance Path • Performance Path • reference house built as proposed house using prescriptive path values (+ assumptions) • proposed houses will be modeled against reference result • If proposed house uses equal or less energy = OK =X ≤X