1. Helping Massachusetts Municipalities Create a Greener Energy Future Code Informational Session February 10, 2016

2. Introduction to Energy Codes

3. What & Why? ChangesFuture Agenda

4. The wonderful world of Acronyms ASHRAE American Society of Heating, Refrigeration and Air-Conditioning Engineers ICCInternational Codes Council IECC International Energy Conservation Code IRC International Residential Code DOER Department of Energy Resources HERS Home Energy Rating DOEDepartment of Energy

5. IECC and ASHRAE Codes   ICC & ASHRAE develop model building codes and standards for the US.   ICC: publishes IECC energy code   3 year cycle IECC 2012, IECC 2015, IECC 2018   ASHRAE: publishes 90.1 standard   3 year cycle 90.1-2010, 90.1-2013

6. The World of Codes 1980’s through 2006 1980’s through 2006 Minimum codes were truly minimal Minimum codes were truly minimal DOE pushed for marginal improvements (1% to 3% per cycle) DOE pushed for marginal improvements (1% to 3% per cycle) DOE proposed (successfully) a major rewrite of the IECC in 2004 (became the 2006 IECC)—emphasis was format, not stringency DOE proposed (successfully) a major rewrite of the IECC in 2004 (became the 2006 IECC)—emphasis was format, not stringency 2009 to present 2009 to present The world has changed The world has changed ICC/DOE working from two goals ICC/DOE working from two goals 30% improvement in 2012 IECC (relative to 2006) 30% improvement in 2012 IECC (relative to 2006) 50% improvement in 2015 IECC (relative to 2006) 50% improvement in 2015 IECC (relative to 2006)

7. What in the world has changed? What is driving the changes to the code: What is driving the changes to the code: Public interest Public interest Political will Political will Pull at ICC Pull at ICC What in the world has changed? What in the world has changed? More efficiency making it into codes More efficiency making it into codes More detail/complexity being pushed onto code officials More detail/complexity being pushed onto code officials More need for expertise and analysis tools in code process More need for expertise and analysis tools in code process Less distinction between code, beyond-code programs Less distinction between code, beyond-code programs

8. Massachusetts Energy Code History 6 th edition of the building code had a MA specific energy code 6 th edition of the building code had a MA specific energy code 7 th edition adopted IECC 2006 7 th edition adopted IECC 2006 Commercial bldgs. ASHRAE 90.1-2004 Commercial bldgs. ASHRAE 90.1-2004 8 th edition adopted IECC 2009 on July 1, 2010 8 th edition adopted IECC 2009 on July 1, 2010 Roughly 10-15% more efficient than IECC 2006 Roughly 10-15% more efficient than IECC 2006 Commercial bldgs. ASHRAE 90.1-2004 remains Commercial bldgs. ASHRAE 90.1-2004 remains Also in 2010 the edition of the “Stretch Code” appendix Also in 2010 the edition of the “Stretch Code” appendix IECC 2012 was adopted on 7/1/2013 IECC 2012 was adopted on 7/1/2013 Designed to be 30% better than IECC 2009 Designed to be 30% better than IECC 2009 Stretch Code Stretch Code IECC 2015 coming July 1, 2016 or at least by summer… IECC 2015 coming July 1, 2016 or at least by summer…

9. IECC 2015

10. Overview of the 2015 Energy Code As with IECC 2012, IECC 2015 requires a better envelope, insulation, ducts, windows, mechanical and more efficient lighting.

11. 2015 IECC –Overview THE BIG CAVEAT Approximately 15% more efficient than the 2009 IECC Approximately 15% more efficient than the 2009 IECC Contains minor changes, very similar to IECC 2012, except for: Contains minor changes, very similar to IECC 2012, except for: Introduction of a new Energy Rating Index (ERI) compliance path Introduction of a new Energy Rating Index (ERI) compliance path Updated Existing Building Section that includes Renovations, Additions and Historic Building language: Updated Existing Building Section that includes Renovations, Additions and Historic Building language: Listed in the National Register Listed in the National Register Eligible to be listed in the National Register Eligible to be listed in the National Register Designated as historic under an applicable state or local law Designated as historic under an applicable state or local law

12. Structure of the IECC 2015 Ch. 1 and Ch. 2 Scope and Application / Administrative and Enforcement Ch. 1 and Ch. 2 Scope and Application / Administrative and Enforcement Ch. 3 Climate zones and general materials requirements Ch. 3 Climate zones and general materials requirements Ch. 4 Residential and Commercial Energy Efficiency Ch. 4 Residential and Commercial Energy Efficiency Ch. 5 Existing Buildings Ch. 5 Existing Buildings Ch. 6 Referenced Standards Ch. 6 Referenced Standards

13. Minor Updates to Chapter 4 Building Envelope Provisions The first change is a new exception to section ‘Access hatches and doors’. The first change is a new exception to section ‘Access hatches and doors’. The exception allows vertical doors that provide access from conditioned to unconditioned spaces to meet the fenestration requirements (i.e., U-value) in Table R402.1.1. The exception allows vertical doors that provide access from conditioned to unconditioned spaces to meet the fenestration requirements (i.e., U-value) in Table R402.1.1. This change means that these types of doors, such as attic knee wall doors, do not have to be insulated the same way as the surrounding wall, as long as they meet the U-value requirements in the table. This change means that these types of doors, such as attic knee wall doors, do not have to be insulated the same way as the surrounding wall, as long as they meet the U-value requirements in the table.

14. Update to Chapter 4 Another new exception allows for the floor framing cavity insulation to not be in contact with the underside of the subfloor decking as long as it is: Another new exception allows for the floor framing cavity insulation to not be in contact with the underside of the subfloor decking as long as it is: In contact with the top side of sheathing or continuous insulation installed on the bottom side of floor framing; In contact with the top side of sheathing or continuous insulation installed on the bottom side of floor framing; And the all the perimeter band joists are insulated to the wood frame wall requirements. And the all the perimeter band joists are insulated to the wood frame wall requirements. The next adds a new section to address ‘Walls with partial structural sheathing’ The next adds a new section to address ‘Walls with partial structural sheathing’ Where continuous insulation is required and structural sheathing covers 40 percent or less of the total exterior wall area, the R-value of the continuous insulation may be reduced by an amount not to exceed R-3 in order to maintain a consistent sheathing thickness. Where continuous insulation is required and structural sheathing covers 40 percent or less of the total exterior wall area, the R-value of the continuous insulation may be reduced by an amount not to exceed R-3 in order to maintain a consistent sheathing thickness.

15. Additional Updates to Chapter 4 The change allows dynamic glazing to satisfy the Solar Heat Gain Co-Efficient (SHGC) requirements where the ratio of the higher- to-lower labeled SHGC is greater than or equal to 2.4, or where both the upper and lower labeled SHGC already comply with the requirements of the table. The change allows dynamic glazing to satisfy the Solar Heat Gain Co-Efficient (SHGC) requirements where the ratio of the higher- to-lower labeled SHGC is greater than or equal to 2.4, or where both the upper and lower labeled SHGC already comply with the requirements of the table. The most significant revision was made in chapter 4 was under ‘Air Barrier and Insulation Installation’ The most significant revision was made in chapter 4 was under ‘Air Barrier and Insulation Installation’ Splitting the ‘criteria’ column into separate ‘air barrier’ and ‘insulation installation’ criteria. Splitting the ‘criteria’ column into separate ‘air barrier’ and ‘insulation installation’ criteria. Additionally new criteria for ‘concealed sprinklers’ was added along with revised criteria for ‘walls’, ‘floors’ and ‘fireplaces’. Additionally new criteria for ‘concealed sprinklers’ was added along with revised criteria for ‘walls’, ‘floors’ and ‘fireplaces’.

16. “Ditto” Updates to Chapter 4 Testing for building envelope air leakage as required under section 4 was also revised to require: Testing for building envelope air leakage as required under section 4 was also revised to require: That all testing be done in accordance with ASTM E 779 or ASTM E 1827. That all testing be done in accordance with ASTM E 779 or ASTM E 1827. There is also a change to the duct insulation provisions There is also a change to the duct insulation provisions The new language clarifies that both supply and return ducts in attics must be insulated to a minimum of R-8, where 3 inch or greater in diameter and R-6 where less than 3 inch diameter. The new language clarifies that both supply and return ducts in attics must be insulated to a minimum of R-8, where 3 inch or greater in diameter and R-6 where less than 3 inch diameter. Supply and return ducts located elsewhere in the building must be insulated to a minimum of R-6, where 3 inch or greater in diameter and R-4.2 where less than 3 inch diameter. Supply and return ducts located elsewhere in the building must be insulated to a minimum of R-6, where 3 inch or greater in diameter and R-4.2 where less than 3 inch diameter.

17. And last, but not least… Two new appendices were approved: Procedures for worst-case (CAZ) testing of atmospheric venting systems Procedures for worst-case (CAZ) testing of atmospheric venting systems Solar-ready provisions for detached one- and two-family dwellings. An appendix is not mandatory unless an adopting entity makes it such. Solar-ready provisions for detached one- and two-family dwellings. An appendix is not mandatory unless an adopting entity makes it such. After analyzing all the changes that were approved for the 2015 IECC, you will notice that the actual impact to energy efficiency is minor. After analyzing all the changes that were approved for the 2015 IECC, you will notice that the actual impact to energy efficiency is minor. The most significant changes to the new IECC residential provisions will be the addition of a new Energy Rating Index compliance path and a new chapter to address existing buildings. The most significant changes to the new IECC residential provisions will be the addition of a new Energy Rating Index compliance path and a new chapter to address existing buildings.

18. Chapter 4 Residential Energy Code Residential Provisions contains the energy-efficiency- related requirements for the design and construction of residential building regulated under this code. Residential Provisions contains the energy-efficiency- related requirements for the design and construction of residential building regulated under this code. The applicable portions of a residential building must comply with the provisions within this chapter for energy efficiency. The applicable portions of a residential building must comply with the provisions within this chapter for energy efficiency. The provisions within the chapter promote energy efficiency in the building envelope, the heating and cooling system and the service water heating system of the building. The provisions within the chapter promote energy efficiency in the building envelope, the heating and cooling system and the service water heating system of the building.

19. Chapter 4 Commercial Energy Code Commercial Provisions contains the energy-efficiency- related requirements for the design and construction of most types of commercial buildings and residential buildings greater than three stories in height above grade. Commercial Provisions contains the energy-efficiency- related requirements for the design and construction of most types of commercial buildings and residential buildings greater than three stories in height above grade. Residential buildings, townhouses and garden apartments three stories or less in height are covered in the IECC— Residential Provisions. Residential buildings, townhouses and garden apartments three stories or less in height are covered in the IECC— Residential Provisions. The provisions within the chapter promote energy efficiency in the building envelope, the heating and cooling system and the service water heating system of the building. The provisions within the chapter promote energy efficiency in the building envelope, the heating and cooling system and the service water heating system of the building.

20. Scope of Chapter 4 Same definitions, Different code Defines Residential Buildings as: Defines Residential Buildings as: One- and two-family dwellings, townhouses of any size and R-2, R-3, R-4 ≤ 3 stories One- and two-family dwellings, townhouses of any size and R-2, R-3, R-4 ≤ 3 stories All buildings that are not “residential” by definition are “commercial” All buildings that are not “residential” by definition are “commercial” Includes additions, alterations, renovations and repairs Includes additions, alterations, renovations and repairs Existing buildings Existing buildings Buildings designated as historic Buildings designated as historic Very low energy use buildings [<3.4 Btu/h-ft2 or 1 watt/ft2] Very low energy use buildings [<3.4 Btu/h-ft2 or 1 watt/ft2]

21. What stays the same from IECC 2012 Lighting stays at 75% of lamps must be ―high efficacy Lighting stays at 75% of lamps must be ―high efficacy Mandatory duct system pressure test Mandatory duct system pressure test Mandatory infiltration testing Mandatory infiltration testing R-Values and U-Values the same R-Values and U-Values the same Retains IECC 2012 prohibition on envelope- equipment tradeoffs Retains IECC 2012 prohibition on envelope- equipment tradeoffs

22. Scope Section R101- Additions Treat as a stand-alone building Treat as a stand-alone building Additions must meet the prescriptive requirements in Table 402.1.1 (or U-factor or total UA alternatives) Additions must meet the prescriptive requirements in Table 402.1.1 (or U-factor or total UA alternatives) Treat as new construction Treat as new construction

23. Existing Buildings-Additions, Alterations, Renovations, Repairs Code applies to any new construction Code applies to any new construction Unaltered portion(s) do not need to comply Unaltered portion(s) do not need to comply Additions can comply alone or in combination with existing building Additions can comply alone or in combination with existing building Replacement fenestration that includes both glazing and sash must meet Replacement fenestration that includes both glazing and sash must meet U-factors in all Climate Zones 2-8 U-factors in all Climate Zones 2-8

24. Climate Zones for the 2015 IECC

25. Scope Section R101 - Additions, Alterations, Renovations, Repairs-Exceptions Storm windows over existing fenestration Storm windows over existing fenestration Glass-only replacements Glass-only replacements Exposed, existing ceiling, wall or floor cavities if already filled with insulation Exposed, existing ceiling, wall or floor cavities if already filled with insulation Where existing roof, wall or floor cavity isn’t exposed Where existing roof, wall or floor cavity isn’t exposed Reroofing for roofs where neither sheathing nor insulation exposed Reroofing for roofs where neither sheathing nor insulation exposed Insulate above or below the sheathing Insulate above or below the sheathing Roofs without insulation in the cavity Roofs without insulation in the cavity Sheathing or insulation is exposed Sheathing or insulation is exposed Lighting alterations if: Lighting alterations if: <50% of luminaries in a space are replaced <50% of luminaries in a space are replaced Only bulbs and ballasts within existing luminaries are replaced (provided installed interior lighting power isn’t increased) Only bulbs and ballasts within existing luminaries are replaced (provided installed interior lighting power isn’t increased)

26. Scope Section R101 - Space Conditioning Any non-conditioned space that is altered to become conditioned space shall be required to be brought into full compliance with this code Any non-conditioned space that is altered to become conditioned space shall be required to be brought into full compliance with this code Examples: Examples: Converting a garage to a family room Converting a garage to a family room Heating an unfinished basement Heating an unfinished basement

27. Scope Section R101 - Mixed Use Buildings-Know both codes! Treat the residential occupancy under the applicable residential code Treat the residential occupancy under the applicable residential code Treat the commercial occupancy under the commercial code Treat the commercial occupancy under the commercial code

28. Overview of Code Structure Climate-Specific Requirements: Roofs Above grade walls Foundations Basements Slabs Crawlspaces Skylights, windows, and doors Mandatory Requirements (apply everywhere): Infiltration control Duct insulation, sealing, and testing HVAC controls Piping Insulation Equipment sizing Dampers Lighting

29. Overview of IECC 2015 Residential Code Requirements Focus is still on: Building envelope ceilings, walls, windows, floors, foundations Building envelope ceilings, walls, windows, floors, foundations Sets insulation and fenestration levels, and solar heat gain coefficients Sets insulation and fenestration levels, and solar heat gain coefficients Infiltration control - caulk and seal to prevent air leaks, and test Infiltration control - caulk and seal to prevent air leaks, and test Ducts, air handlers, filter boxes – seal, insulate, and test Ducts, air handlers, filter boxes – seal, insulate, and test Limited space heating, air conditioning, and water heating requirements Limited space heating, air conditioning, and water heating requirements Federal law sets most equipment efficiency requirements, not the I- codes Federal law sets most equipment efficiency requirements, not the I- codes No appliance requirements No appliance requirements Lighting equipment – 75% of lamps to be high-efficacy lamps or 75% of lighting fixtures to have only high-efficacy lamps Lighting equipment – 75% of lamps to be high-efficacy lamps or 75% of lighting fixtures to have only high-efficacy lamps

30. Compliance IECC Terminology Prescriptive, UA/U-Factor and Performance Prescriptive, UA/U-Factor and Performance Energy Rating Index (ERI) compliance path Energy Rating Index (ERI) compliance path Mandatory requirements Mandatory requirements Required and cannot be traded down, even in the simulated performance path Required and cannot be traded down, even in the simulated performance path Some elements have “hard limits” aka, “trade-off limits” Some elements have “hard limits” aka, “trade-off limits” a prescriptive requirement that can only be traded so far a prescriptive requirement that can only be traded so far performance requirements can only be traded so far performance requirements can only be traded so far

31. IECC 2012/2015 Compliance - Three Options

32. Code Compliance Tools

33. IECC Comparison Typical Existing Home Std New Home IECC 2006 IECC 2012 ~ HERS 70 IECC 2015 ~ HERS 55 Stretch Code < 3000 sq ft - HERS 70 > 3000 sq ft - HERS 65

34. Performance Path Changes A new performance path compliance option was approved Energy Rating Index (ERI) Compliance Alternative: A new performance path compliance option was approved Energy Rating Index (ERI) Compliance Alternative: This new ERI compliance path represents the most significant change coming to the IECC 2015. This new ERI compliance path represents the most significant change coming to the IECC 2015. This new performance path option is based ERI RESNET’s Home Energy Rating System (HERS) is one of the most common systems that use an ERI. This new performance path option is based ERI RESNET’s Home Energy Rating System (HERS) is one of the most common systems that use an ERI.

35. Performance Path Changes Aside from meeting an ERI score between 51 and 55. Aside from meeting an ERI score between 51 and 55. The path also requires some minimum mandatory requirements including building envelope levels at least as stringent as the IECC 2009. The path also requires some minimum mandatory requirements including building envelope levels at least as stringent as the IECC 2009. A requirement that verification of compliance be completed by an approved third party. A requirement that verification of compliance be completed by an approved third party.

36. IECC 2012 Major Changes are still IECC 2015 Code Duct leakage rates lowered Duct leakage rates lowered Domestic hot water piping must be either Domestic hot water piping must be either Insulated to R3, or Insulated to R3, or Short and skinny (i.e., exempted lengths depend on diameter) Short and skinny (i.e., exempted lengths depend on diameter) Eliminated ―leakage to outdoors option for ducts Eliminated ―leakage to outdoors option for ducts From 12 to 4 CFM/100sf CFA (after construction) From 12 to 4 CFM/100sf CFA (after construction) From 6 to 4 CFM/100sf CFA (at rough-in) From 6 to 4 CFM/100sf CFA (at rough-in) Various R-value/U-factor/SHGC improvements Various R-value/U-factor/SHGC improvements

37. Same IECC Infiltration Rates Mandatory whole- house pressure test (blower door) with stringent required leakage rates Mandatory whole- house pressure test (blower door) with stringent required leakage rates Zones 3-8: ≤ 3 ACH @50 Pa Zones 3-8: ≤ 3 ACH @50 Pa Address fireplaces and recessed lighting fixtures Address fireplaces and recessed lighting fixtures

38. Yup Air Tightness Requirements…Same Compliance Compliance Just like the 2012 code, 2015 provides a lot of leeway to the local inspector; according to the code, “Where required by the code official, an approved third party shall inspect all components and verify compliance.” Just like the 2012 code, 2015 provides a lot of leeway to the local inspector; according to the code, “Where required by the code official, an approved third party shall inspect all components and verify compliance.” Reference Table R402.4.1.1 for requirements Reference Table R402.4.1.1 for requirements http://publicecodes.cyberregs.com/icod/iecc/2012/icod _iecc_2012_re4_sec002_par027.htm http://publicecodes.cyberregs.com/icod/iecc/2012/icod _iecc_2012_re4_sec002_par027.htm http://publicecodes.cyberregs.com/icod/iecc/2012/icod _iecc_2012_re4_sec002_par027.htm http://publicecodes.cyberregs.com/icod/iecc/2012/icod _iecc_2012_re4_sec002_par027.htm

39. Building Envelope Specific Requirements Building Envelope consists of: Fenestration Fenestration Ceilings Ceilings Walls Walls Above grade Above grade Below grade Below grade Mass walls Mass walls Floors Floors Slabs Slabs Crawlspaces Crawlspaces

40. IECC 2009/2012–Major Prescriptive Envelope Changes

41. IECC 2015–Insulation and Fenestration Rating Requirements

42. Insulation Verification R-values are to be printed on the batt insulation or rigid foam board. R-values are to be printed on the batt insulation or rigid foam board. Blown-in insulation must have an insulation certificate at or near the opening of the attic. Blown-in insulation must have an insulation certificate at or near the opening of the attic. The certificate should include: The certificate should include: R-value of installed thickness R-value of installed thickness Initial installed thickness Initial installed thickness Installed density Installed density Settled thickness/settled R-value Settled thickness/settled R-value Coverage area Coverage area Number of bags installed Number of bags installed Insulation markers must be installed every 300 square feet and be marked with the minimum installed thickness and affixed to the trusses or joists. Insulation markers must be installed every 300 square feet and be marked with the minimum installed thickness and affixed to the trusses or joists.

43. Floors (Over Unconditioned Space) Unconditioned space includes unheated basement, vented crawlspace, or outdoor air Insulation must maintain permanent contact with underside of subfloor-Climate Zone 5-R30 Crawl Space Insulation Tips: Insulating crawl spaces will help to air seal and control moisture. How you insulate a crawl space depends on whether it's ventilated or unventilated. Traditionally, crawl spaces are vented to prevent problems with moisture; most building codes require vents to aid in removing moisture from the crawl space

44. Mandatory Requirements Mechanical Systems Controls-At least one programmable thermostat/dwelling unit Controls-At least one programmable thermostat/dwelling unit Heat pump supplementary heat Heat pump supplementary heat Ducts Ducts Sealing (Mandatory) Sealing (Mandatory) Insulation (Prescriptive) Insulation (Prescriptive) HVAC piping insulation* HVAC piping insulation* Circulating hot water systems Circulating hot water systems Ventilation Ventilation Dampers Dampers Equipment sizing-Heating and cooling equipment shall be sized according to Manual S based on loads calculated according to Manual J Equipment sizing-Heating and cooling equipment shall be sized according to Manual S based on loads calculated according to Manual J Pools and in ground permanently installed spas Pools and in ground permanently installed spas Snow melt controls Snow melt controls

45. Duct Sealing and Insulation Duct Sealing Mandatory test 3 CFM ACH@50 Rough in and post construction tests Adopts testing widely used by Stretch Code / Energy Star Homes Not required if located within conditioned space Framing cavities cannot be used as ducts or plenums Duct Insulation Supply ducts in attics: R-8 (Attic) All other ducts: R-6 (Basement, Crawlspace, Exterior Wall,)

46. Lighting Equipment A minimum of 75% of the lamps in permanently installed lighting fixtures shall be high-efficacy lamps or 75% of permanently installed lighting fixtures to contain only high efficacy lamps. A minimum of 75% of the lamps in permanently installed lighting fixtures shall be high-efficacy lamps or 75% of permanently installed lighting fixtures to contain only high efficacy lamps. “Lamps in fixtures” “Lamps in fixtures” Exception: Exception: Low-voltage lighting Low-voltage lighting Use specified lighting Use specified lighting

47. High Efficacy Lighting and Compliance The residential lighting provisions in the 2012 IECC are relatively simple. The residential lighting provisions in the 2012 IECC are relatively simple. At least 75% of the lamps in permanent light fixtures must be high-efficacy, defined as: At least 75% of the lamps in permanent light fixtures must be high-efficacy, defined as: T8 or smaller-diameter linear fluorescent lamps, T8 or smaller-diameter linear fluorescent lamps, Or lamps such as CFLs, LEDs or Pin Based Lamps with a minimum efficacy of: Or lamps such as CFLs, LEDs or Pin Based Lamps with a minimum efficacy of: 40 lumens/W for <15W 40 lumens/W for <15W 50 lumens/W for 15-40W 50 lumens/W for 15-40W 60 lumens/W for >40W lamps 60 lumens/W for >40W lamps Exception: Low-voltage lighting Exception: Low-voltage lighting

48. Ventilation The building shall be provided with ventilation that meets the requirements of the IRC, IMC, or other approved ventilation. The building shall be provided with ventilation that meets the requirements of the IRC, IMC, or other approved ventilation. Minimum efficacy: Minimum efficacy: Range hoods 2.8 cfm/watt Range hoods 2.8 cfm/watt In-line fans 2.8 cfm/watt In-line fans 2.8 cfm/watt Bathroom fan (10-89 cfm) 1.4 cfm/watt Bathroom fan (10-89 cfm) 1.4 cfm/watt Bathroom fan (90+ cfm) 2.8 cfm/watt Bathroom fan (90+ cfm) 2.8 cfm/watt

49. What about mechanical ventilation? The 2015 IECC continues to include provisions to improve a home’s air tightness, it provides little on whole house ventilation. The 2015 IECC continues to include provisions to improve a home’s air tightness, it provides little on whole house ventilation. A typical home will require about 15 cfm per person of fresh outdoor air to be distributed by continuous mechanical ventilation to meet the requirements of the code. A typical home will require about 15 cfm per person of fresh outdoor air to be distributed by continuous mechanical ventilation to meet the requirements of the code. The new code requires homes in zone 5 achieve 3 ach50, the code effectively mandates a whole-house mechanical ventilation system. The new code requires homes in zone 5 achieve 3 ach50, the code effectively mandates a whole-house mechanical ventilation system. This can be accomplished with a centrally located quiet exhaust fan, an interconnected system to the air handler, HRV/ERV or a combination of devices. This can be accomplished with a centrally located quiet exhaust fan, an interconnected system to the air handler, HRV/ERV or a combination of devices.

50. Eave Baffles For air permeable insulations in vented attics, baffle For air permeable insulations in vented attics, baffle Installed adjacent to soffit and eave vents Installed adjacent to soffit and eave vents To maintain an opening ≥ size of vent To maintain an opening ≥ size of vent To extend over top of attic insulation To extend over top of attic insulation May be of any solid material May be of any solid material

51. Residential Incentives Almost the same as the Stretch Code/IECC 2012 Almost the same as the Stretch Code/IECC 2012 Approx 30% of new homes in MA Approx 30% of new homes in MA Builder incentives/rebates Builder incentives/rebates $750 - $7000 for SFD $750 - $7000 for SFD $350 - $4,000 for MF $350 - $4,000 for MF HERS raters HERS raters $700 - $900 SFD $700 - $900 SFD $250 - $550 MF $250 - $550 MF Additional Equipment Rebates Additional Equipment Rebates Appliances – up to $50 (low income) Appliances – up to $50 (low income) Heating – up to $1,500 Heating – up to $1,500 Water Heating – up to $800 Water Heating – up to $800 Cooling – up to $500 Cooling – up to $500 Lighting – free CFLs Lighting – free CFLs Massachusetts Residential New Construction Program

52. IECC 2015 Bottom Line Code Compliance Just like IECC 2012 every new home built will need to be tested with a blower door, have a strategy to stop thermal bridging, need a tighter envelope, tighter ducts, right sized mechanical systems, more efficient lighting and mechanical ventilation.

53. Stretch Code Appendix 120.aa

54. What is the Stretch Code? Affects the energy code only Affects the energy code only Amendment to the MA base energy code Amendment to the MA base energy code Residential Construction: Residential Construction: 15-20% more energy efficient 15-20% more energy efficient Commercial: Commercial: 20% more energy efficient 20% more energy efficient The Stretch Code is similar to the 2012 IECC The Stretch Code is similar to the 2012 IECC

55. Misconceptions The Stretch Code is new and experimental The Stretch Code is new and experimental The Stretch Code requires tight unhealthy homes The Stretch Code requires tight unhealthy homes The Stretch Code requires foam insulation The Stretch Code requires foam insulation The Stretch Code requires mechanical ventilation The Stretch Code requires mechanical ventilation Homes with oil heat cannot meet the Stretch Code Homes with oil heat cannot meet the Stretch Code Town residents will be required to update their existing homes Town residents will be required to update their existing homes

56. What does the Stretch Code Apply to? Same application as the MA base energy code Same application as the MA base energy code Insulation Insulation Doors, Windows, Skylights Doors, Windows, Skylights Mechanical Equipment Mechanical Equipment Lighting Lighting Appliances Appliances Building tightness Building tightness Duct tightness Duct tightness Renewables Renewables

57. Code Compliance Requirements

59. What does the Stretch Code Apply to? Residential Residential Additions Additions Home Renovations Home Renovations New Construction New Construction Commercial (5,000+sq/ft) New Construction Additions Renovations Exempt

60. Additions and Renovations Prescriptive or Performance Path Prescriptive Path Prescriptive Path ENERGY STAR Windows, Doors and Skylights ENERGY STAR Windows, Doors and Skylights Tight Ducts – completely new duct systems only Tight Ducts – completely new duct systems only Contractor Verified Thermal Bypass Checklist Contractor Verified Thermal Bypass Checklist Performance Path Performance Path Whole house HERS Rating Whole house HERS Rating Renovations: Renovations: HERS 85 < 2,000 sq ft. HERS 85 < 2,000 sq ft. HERS 80 ≥ 2,000 sq ft. HERS 80 ≥ 2,000 sq ft. Additions: Additions: HERS 70 < 3,000 sq ft. HERS 70 < 3,000 sq ft. HERS 65 ≥ 3,000 sq ft. HERS 65 ≥ 3,000 sq ft.

61. New Homes Performance Path Performance is the only option Performance is the only option HERS 70 < 3,000 sq ft. HERS 70 < 3,000 sq ft. HERS 65 ≥ 3,000 sq ft. HERS 65 ≥ 3,000 sq ft. HERS Rating Company HERS Rating Company Review building plans Review building plans Thermal bypass Checklist Thermal bypass Checklist Blower-door and duct testing Blower-door and duct testing

62. Home Energy Rating System (HERS) Index Home Energy Rating System (HERS) Index Internal Revenue Service Internal Revenue Service U.S. Department of Energy U.S. Department of Energy U.S. Environmental Protection Agency U.S. Environmental Protection Agency Mortgage Industry Mortgage Industry Massachusetts Base Code - Alternative Path Massachusetts Base Code - Alternative Path Mass Save Residential New Construction Program Mass Save Residential New Construction Program New Homes Performance Path

63. Governed by the Residential Energy Services Network (RESNET) Governed by the Residential Energy Services Network (RESNET) Technical Standards Technical Standards Testing Procedures Testing Procedures Quality Assurance Quality Assurance Continuing Education Continuing Education Code of Ethics Code of Ethics Complaint Resolution Complaint Resolution New Homes Performance Path

64. Cost of the Stretch Code HousetypeSizeUpgrade Costs Add’l Annual Mortgage Annual Savings Single Family2,672$2,949$214$507 w/ incentives2,672$1,755$127$516 Single Family4,462$6,476$471$1,455 w/ incentives4.462$5,176$376$1,455 Single Family1,708$4,162$302$583 w/ incentives1,708$3,243$236$595

65. COMMERCIAL STRETCH CODE

66. 66 Commercial ‘Stretch’ Appendix New buildings and additions over 5,000 ft2, renovations fall to the base code New buildings and additions over 5,000 ft2, renovations fall to the base code Two Options (depending on size) Two Options (depending on size) Performance option - 20% below ASHRAE Code Performance option - 20% below ASHRAE Code Prescriptive option for most building types Prescriptive option for most building types 5,000 - 100,000 ft2 5,000 - 100,000 ft2 Special Code Exemptions (comply with base code) for laboratories, manufacturing, etc. Special Code Exemptions (comply with base code) for laboratories, manufacturing, etc.

67. Stretch Code Compliance & Inspections Stretch Code Compliance & Inspections Same as base code Same as base code Code Official has the same authority Code Official has the same authority Same building inspections Same building inspections Approves building documents Approves building documents

68. Future of the Stretch Code The MA base energy code will update this year The MA base energy code will update this year The Stretch Code will update too The Stretch Code will update too More energy efficient More energy efficient No details yet No details yet Automatic Adoption Automatic Adoption

69. Training on new energy codes Training on new energy codes Covering both the IECC 2012, 2015 & Stretch code Covering both the IECC 2012, 2015 & Stretch code Provided to Builders, Code Officials and trade organizations Provided to Builders, Code Officials and trade organizations Utilities offer commercial ‘Core Performance’ energy training Utilities offer commercial ‘Core Performance’ energy training http://www.masssave.co m/professionals/massach usetts-energy-code- technical-support http://www.masssave.co m/professionals/massach usetts-energy-code- technical-support http://www.masssave.co m/professionals/massach usetts-energy-code- technical-support http://www.masssave.co m/professionals/massach usetts-energy-code- technical-support

70. Questions?