Advanced Residential T24 - Compliance Class

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Starting January 1, 2010 the new 2008 Title-24 Building Energy Efficiency Standards became law in California and is roughly 15-22% more restrictive than the 2005 Title-24 energy code it replaced.

In addition, most utility incentives and many cities in California now require that you exceed the new 2008 Title-24 energy code by 15-35%! The big questions from architects, builders, and developers are these: How can this possibly be done? Is this a realistic, cost effective goal?

Our answer is simply this: Yes it can be done! And cost-effectively. This advanced Title-24 training class will examine new Title-24 compliance strategies and options which can take your project beyond the minimum Title-24 code requirements by 15%, 35% and more.

The course will provide a detailed understanding of all available Title-24 compliance strategies including HERS compliance measures, (duct testing, QII, refrigerant charge verification, etc) and how they can leverage your project into compliance with utility sponsored incentive programs, the New Solar Home Partnership (NSHP), LEED, and ensure quality control on the job site.

Architects who attend will receive (3) AIA CEU learning units (HSW & SD)

Class was formerly called "Fundamentals of Commercial Title-24.

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Advanced Residential T24 - Compliance Class

  1. 1. 5/20/2010Title-24 Building Energy Standards Energy Code Works, Inc. Mark Madison CEPE, CEA, AEE, HERS Rater, GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS Housekeeping AIA CES credits: 1 3 HSW (Health Safety & Welfare) 3 SD (Sustainable Design) 2 ©2010 Energy Code Works, Inc. 1
  2. 2. 5/20/2010 Beyond Title-24Advanced Title-24 scope:  Why go beyond Title-24?  How do you get beyond Title-24? 3 ©2010 Energy Code Works, Inc. Beyond Title-24Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED  Sticks  Cities requiring better than Title-24 compliance  Energy efficient mortgages  Self-motivated designers/builders  Title-24 energy code = just barely legal 4 ©2010 Energy Code Works, Inc. 2
  3. 3. 5/20/2010 Beyond Title-24Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED 5 ©2010 Energy Code Works, Inc. Beyond Title-24Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED 6 ©2010 Energy Code Works, Inc. 3
  4. 4. 5/20/2010 Beyond Title-24Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED 7 ©2010 Energy Code Works, Inc. Beyond Title-24Why Beyond Title-24? 8 ©2010 Energy Code Works, Inc. 4
  5. 5. 5/20/2010 Beyond Title-24Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Carrots:  Utility incentive programs  PV incentives (NSHP)  Energy-Star  LEED 9 ©2010 Energy Code Works, Inc. Beyond Title-24Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Sticks  Cities requiring better than Title-24 compliance  Energy efficient mortgages 10 ©2010 Energy Code Works, Inc. 5
  6. 6. 5/20/2010 Beyond Title-24Why Beyond Title-24?  Incentives and requirements (carrots & sticks)  Sticks  Cities requiring better than Title-24 compliance  Energy efficient mortgages 11 ©2010 Energy Code Works, Inc. Beyond Title-24 How do you get beyond Title-24?  Challenges:  New 2008 Title-24 Building Energy Standards 15-22% more restrictive, tougher than current 2005 energy code.  Many energy credits in 2005 standards are now baseline for 2008 energy code  New 2008 energy code introduces additional layers of compliance criteria, forms, paperwork 12 ©2010 Energy Code Works, Inc. 6
  7. 7. 5/20/2010 Beyond Title-24 How do you get beyond Title-24?  Opportunities:  35% better than 2005 Title-24 has been achievable.  2008 Title-24 energy code contains new credits  Building industry has reacted to carrots and sticks  Insulation products  Radiant Barriers  Cool Roofs  HVAC efficiencies  Window/doors products  NFRC testing  Tank less water heaters 13 ©2010 Energy Code Works, Inc. Scope of this Class 1 Changes to Envelope Requirements 2 Changes to HVAC Requirements 3 New Residential Lighting Requirements 4 Impact of Time Dependant Valuation (TDV) 14 ©2010 Energy Code Works, Inc. 7
  8. 8. 5/20/2010 Scope of this Class 5 Beyond Title-24: Envelope 6 Beyond Title-24: HVAC 7 Beyond Title-24: HERS Measures 8 SDG&E’s Incentive Programs 15 ©2010 Energy Code Works, Inc. 2008 Building Energy StandardsEffective date: January 1, 2010  Projects permitted prior to January 1, 2010 will continue to use 2005 energy code 16 ©2010 Energy Code Works, Inc. 8
  9. 9. 5/20/2010 2008 Building Energy Standards Effective date: January 1, 2010 17 ©2010 Energy Code Works, Inc. 2008 Building Energy Standards Future of Title-24 18 ©2010 Energy Code Works, Inc. 9
  10. 10. 5/20/2010 2008 Building Energy Standards Future of Title-24 19 ©2010 Energy Code Works, Inc. 2008 Building Energy Standards Future of Title-24 20 ©2010 Energy Code Works, Inc. 10
  11. 11. 5/20/2010 2008 Building Energy Standards Future of Title-24 21 ©2010 Energy Code Works, Inc. Scope of this Class 1 Changes to Envelope Requirements 2 Changes to HVAC Requirements 3 New Residential Lighting Requirements 4 Impact of Time Dependant Valuation (TDV) 22 ©2010 Energy Code Works, Inc. 11
  12. 12. 5/20/2010 Compliance Paths Two compliance paths available Prescriptive Performance 23 ©2010 Energy Code Works, Inc. Compliance Paths Two compliance paths available Mandatory Measures Prescriptive PerformancePrescriptive Performance Path Path 24 ©2010 Energy Code Works, Inc. 12
  13. 13. 5/20/2010 Compliance Paths Advantages/Disadvantages Mandatory Measures Prescriptive PerformancePrescriptive Performance Path Path 25 ©2010 Energy Code Works, Inc. Building Envelope Walls, floors, ceiling assemblies Windows, glass doors, skylights When required, testing and certification, & labeling requirements, where required. 26 ©2010 Energy Code Works, Inc. 13
  14. 14. 5/20/2010Building Envelope Current 2005 Prescriptive Requirements 27 ©2010 Energy Code Works, Inc.Building Envelope New 2008 Prescriptive Requirements 28 ©2010 Energy Code Works, Inc. 14
  15. 15. 5/20/2010 Building Envelope New 2008 Prescriptive RequirementsBottom Line:Prescriptive insulation levels remain essentiallyunchanged from 2005 standardsBig change…..Fenestration requirements 29 ©2010 Energy Code Works, Inc. Building Envelope Current 2005 Prescriptive Requirements 30 ©2010 Energy Code Works, Inc. 15
  16. 16. 5/20/2010 Building Envelope New 2008 Prescriptive Requirements 31 ©2010 Energy Code Works, Inc. Building Envelope Windows, glass doors, skylightsTwo allowable methods for determining window & doorperformance: NFRC procedures/labels or… Use default tables (116-a & 116-b) 32 ©2010 Energy Code Works, Inc. 16
  17. 17. 5/20/2010Building Envelope Windows, glass doors, skylights 33 ©2010 Energy Code Works, Inc.Building Envelope 34 ©2010 Energy Code Works, Inc. 17
  18. 18. 5/20/2010Building Envelope 35 ©2010 Energy Code Works, Inc.Building Envelope Windows, glass doors, skylights 36 ©2010 Energy Code Works, Inc. 18
  19. 19. 5/20/2010Building Envelope Windows, glass doors, skylightsDefault tables 116-a & 116-b 37 ©2010 Energy Code Works, Inc.Building Envelope Windows, glass doors, skylights 2008 Package D 38 ©2010 Energy Code Works, Inc. 19
  20. 20. 5/20/2010Building Envelope Windows, glass doors, skylightsPackage D vs. Default tables (U-factor) 39 ©2010 Energy Code Works, Inc.Building Envelope Windows, glass doors, skylightsPackage D vs. Default tables (SHGC) 40 ©2010 Energy Code Works, Inc. 20
  21. 21. 5/20/2010Building Envelope Windows, glass doors, skylights Package D vs. NFRC labels 41 ©2010 Energy Code Works, Inc.Building Envelope Windows, glass doors, skylights Bottom Line: Prescriptive U-factor requirements almost 30% more stringent than 2005 code 2008 Standards will force you to use NFRC Labels Significant penalty for using default tables 42 ©2010 Energy Code Works, Inc. 21
  22. 22. 5/20/2010Building Envelope When required, where required, testing, certification & labeling In 2008 code required prescriptively in all climate zones New, addition & alterations 43 ©2010 Energy Code Works, Inc.Building Envelope When required, where required, testing, certification & labeling Energy Star Cool Roof does not qualify in California Must be certified & labeled by the Cool Roof Rating Council 44 ©2010 Energy Code Works, Inc. 22
  23. 23. 5/20/2010 Building Envelope When required, where required, testing, certification & labelingExemptions to cool roof requirement: Roof areas covered by building integrated photovoltaic panels and solar hot water panels and roofs with existing roof ballasts w/weight of 25 lb/ft2 are exempted from cool roof requirement. 45 ©2010 Energy Code Works, Inc. Scope of this Class 1 Changes to Envelope Requirements 2 Changes to HVAC Requirements 3 New Residential Lighting Requirements 4 Impact of Time Dependant Valuation (TDV) 46 ©2010 Energy Code Works, Inc. 23
  24. 24. 5/20/2010 HVACMinimum AFUE, SEER, EERSEER vs EERPrescriptive requirementNo prescriptive alternativesHVAC change-outsRefrigerant Charge MeasurementCooling Coil AirflowFat Watt Draw 47 ©2010 Energy Code Works, Inc. HVAC Appliance Efficiency Regulations set HVAC efficiency minimums in Prescriptive Packages 48 ©2010 Energy Code Works, Inc. 24
  25. 25. 5/20/2010 HVACPrescriptive Packages refer toAppliance Efficiency Regulationsminimums 49 ©2010 Energy Code Works, Inc. HVACMinimum AFUE, SEER, EERSEER vs EER 50 ©2010 Energy Code Works, Inc. 25
  26. 26. 5/20/2010 HVAC Minimum AFUE, SEER, EER SEER vs EERQuestions:What is the difference betweenEER and SEER?Why does it matter? 51 ©2010 Energy Code Works, Inc. HVAC Minimum AFUE, SEER, EER SEER vs EEREER is measured at 80 degreesindoor air running continuouslySEER is measured by using theEER and factoring in the same unitrunning under a lighter load (80degrees indoor, 82 degreesoutdoor and cycling on and off 52 ©2010 Energy Code Works, Inc. 26
  27. 27. 5/20/2010 HVAC Minimum AFUE, SEER, EER SEER vs EERWhy this matters:Possible for two units with the sameSEER to have different EERsFor two units with a given SEER theone with the higher EER will be moreefficientEER’s higher than 10 require HERSverificationTake time to verify SEER and EER 53 ©2010 Energy Code Works, Inc. HVAC Minimum AFUE, SEER, EER SEER vs EERWhy this matters:EER higher than 10 will trigger aHERS credit in the Title-24 compliancecalculationsWill also appear on the CF-1R as aHERS measure required verificationand a CF-4R 54 ©2010 Energy Code Works, Inc. 27
  28. 28. 5/20/2010 HVAC Minimum AFUE, SEER, EER SEER vs EERBottom Line:Minimum efficiency levels remainessentially unchanged from 2005standards. EER more importantBig change…..Duct testing,Refrigerant Charge Measurement,Cooling coil airflow & Fan Watt Draw 55 ©2010 Energy Code Works, Inc. HVAC Prescriptive requirement No prescriptive alternatives HVAC change-outs 56 ©2010 Energy Code Works, Inc. 28
  29. 29. 5/20/2010 HVAC Prescriptive requirement No prescriptive alternatives HVAC change-outsTXV verification or higher EERalternatives no longer options toavoid duct sealing & testingPerformance approach is anoption to tradeoff against ductsealing & testing 57 ©2010 Energy Code Works, Inc. HVAC Prescriptive requirement No prescriptive alternatives HVAC change-outsHVAC change-outsDucts must be sealed and testedunder any of the followingcircumstances: 58 ©2010 Energy Code Works, Inc. 29
  30. 30. 5/20/2010 HVAC Prescriptive requirement No prescriptive alternatives HVAC change-outs HVAC change-outs 1. Air handler installed or replaced 2. Outdoor condensing unit installed or replaced 3. Cooling or heating coil installed or replaced 4. Furnace heat exchanger installed or replaced 5. When existing duct systems are altered in climate zones 2, 9, 10, 11, 12-16 59 ©2010 Energy Code Works, Inc. HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt DrawPrescriptive Package RequirementsRefrigerant charge Measurement Climate zones 2 and 8-15 (split systems only)Cooling Coil Airflow (greater than 350 cfm per ton) Climate zones 10-15Fan Watt Draw (less than 0.58 watt per cfm) Climate zones 10-15 60 ©2010 Energy Code Works, Inc. 30
  31. 31. 5/20/2010 HVACRefrigerant Charge MeasurementCooling Coil AirflowFan Watt Draw 61 ©2010 Energy Code Works, Inc. HVACRefrigerant Charge MeasurementCooling Coil AirflowFan Watt Draw 62 ©2010 Energy Code Works, Inc. 31
  32. 32. 5/20/2010 HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt Draw Two permanently installed temperature sensors, one mounted on evap coil and one mounted on condenser coil. Must be type K with plug leading to outside of equipment accessible to HERS raters without any disassembly 63 ©2010 Energy Code Works, Inc. HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt DrawTwo permanently installedtemperature sensors, onemounted on evap coil and onemounted on condenser coil.Must be type K with plug leadingto outside of equipment accessibleto HERS raters without anydisassembly 64 ©2010 Energy Code Works, Inc. 32
  33. 33. 5/20/2010 HVAC Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt DrawBottom lineThese HERS measures are baseline in Package D so they will be widespreadBecause they are required in Package D they are not available as a credit to helpyou go beyond Title-24HVAC contractors will need to become familiar with testing procedure for all threeHERS measures.CF-6R HVAC forms will need to be filled out prior to HERS verification testsWill need system in place for providing sensors, temperature and pressure accessholes w/labels for HERS raters 65 ©2010 Energy Code Works, Inc. Scope of this Class 1 Changes to Envelope Requirements 2 Changes to HVAC Requirements 3 New Residential Lighting Requirements 4 Impact of Time Dependant Valuation (TDV) 66 ©2010 Energy Code Works, Inc. 33
  34. 34. 5/20/2010 TDV 4 Impact of Time Dependant Valuation (TDV) New for 2008 Residential Standards Previous versions of Title-24 did not account for time-of-use patterns TDV accounts for variations in cost related to time of day, seasons, geography, fuel type 2008 Standards now places a higher value on energy savings during high cost times Encourages designs that will reduce peak loads thru-out California. 67 ©2010 Energy Code Works, Inc. TDV 4 Impact of Time Dependant Valuation (TDV)Example:Single family residence1800 sq. ft.Package D parameters 68 ©2010 Energy Code Works, Inc. 34
  35. 35. 5/20/2010 TDV 4 Impact of Time Dependant Valuation (TDV)Example:SFR residence1800 sq. ft.Package D 69 ©2010 Energy Code Works, Inc. TDV 4 Impact of Time Dependant Valuation (TDV)Example:SFR residence1800 sq. ft.Package D1ST Perf RunFront facing N 70 ©2010 Energy Code Works, Inc. 35
  36. 36. 5/20/2010 TDV 4 Impact of Time Dependant Valuation (TDV)Example:SFR residence1800 sq. ft.Package D2nd Perf RunMultipleOrientations 71 ©2010 Energy Code Works, Inc. TDV 4 Impact of Time Dependant Valuation (TDV) Strategies for TDV Orientation is important is building design Take advantage of all overhangs and side fins in building design Model each window and door separately in compliance run Utilize exterior shading devices No credit for interior shading devices break 72 ©2010 Energy Code Works, Inc. 36
  37. 37. 5/20/2010 TDV 4 Impact of Time Dependant Valuation (TDV)Bottom Line for TDV 2008Building designs that generate high heating/cooling loads during peakenergy cost periods will be severely penalizedElectric multipliers for 2008 up to 50 verses 20 in 2005 standardsGas multipliers for 2008 up to 1.5 vs. 1.0 in 2005 standardsUpside: Energy saving features, strategies that reduce peak loads are rewarded greatly, can help you go “better than” Title-24break 73 ©2010 Energy Code Works, Inc. Title-24 Building Energy Standards Energy Code Works, Inc. Break 37
  38. 38. 5/20/2010 Scope of this Class 5 Beyond Title-24: Envelope 6 Beyond Title-24: HVAC 7 Beyond Title-24: HERS Measures 8 SDG&E’s Incentive Programs 75 ©2010 Energy Code Works, Inc. Compliance PathsTwo compliance paths available Prescriptive Performance 76 ©2010 Energy Code Works, Inc. 38
  39. 39. 5/20/2010 Building Envelope New 2008 Prescriptive Requirements 77 ©2010 Energy Code Works, Inc. Building Envelope 2008 Upgrade OptionsOpaque Options for credit:Superbatt insulationOverhangs/SidefinsHouse wrap 78 ©2010 Energy Code Works, Inc. 39
  40. 40. 5/20/2010 Building Envelope 2008 Upgrade Options Superbatt insulation R-15: 3 ½” thickness 2x4 framing R-21: 5 ½” thickness 2x6 framing 79 ©2010 Energy Code Works, Inc. Building Envelope 2008 Upgrade OptionsOverhangsIgnored in prescriptive approachLarge credit using performanceRequires modeling each window/glazed door separately 80 ©2010 Energy Code Works, Inc. 40
  41. 41. 5/20/2010 Building Envelope 2008 Upgrade Options 81 ©2010 Energy Code Works, Inc. Building Envelope 2008 Upgrade OptionsHouse Wrap:Reduces building envelope air leakageMust be applied continuouslyAll tears/breaks repairedHorizontal seams lappedVertical seams lappedWindows/penetrations taped or caulkedTaped or sealed at slab junction 82 ©2010 Energy Code Works, Inc. 41
  42. 42. 5/20/2010Building Envelope 2008 Upgrade Options 83 ©2010 Energy Code Works, Inc.Building Envelope 2008 Upgrade OptionsDefault tables 116-a & 116-b 84 ©2010 Energy Code Works, Inc. 42
  43. 43. 5/20/2010Building Envelope 2008 Upgrade Options Package D vs. NFRC labels 85 ©2010 Energy Code Works, Inc.Building Envelope 2008 Upgrade Options 86 ©2010 Energy Code Works, Inc. 43
  44. 44. 5/20/2010 Building Envelope 2008 Upgrade Options Glazing Strategies for Beyond Title-24: Do not use default tables if possible Relatively easy to hit 0.40 UF/SHGC target Energy Star target of 0.30 UF/SHGC is driving window manufactures product more than California’s Title-24’s 0.40/0.40 87 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Envelope ResultsPackage DResults: 6 88 ©2010 Energy Code Works, Inc. 44
  45. 45. 5/20/2010 Building Envelope 5 Beyond Title-24: Envelope Results Envelope Improvements Results: 6 Superbatt: R-15 wall insulation R-38 ceiling insulation House wrap Modeled overhangs and sidefins Milgard Low-E windows: 0.30 U-factor 0.30 SHGC (Energystar) 89 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Envelope ResultsEnvelopeImprovementsResults:Superbatt 6HousewrapOverhangsMilgard Low-EWindows 90 ©2010 Energy Code Works, Inc. 45
  46. 46. 5/20/2010 Scope of this Class 5 Beyond Title-24: Envelope 6 Beyond Title-24: HVAC 7 Beyond Title-24: HERS Measures 8 SDG&E’s Incentive Programs 91 ©2010 Energy Code Works, Inc.HVAC Upgrades Beyond Title-24 Minimum AFUE, SEER, EER SEER vs EER Prescriptive requirement No prescriptive alternatives HVAC change-outs Refrigerant Charge Measurement Cooling Coil Airflow Fat Watt Draw 92 ©2010 Energy Code Works, Inc. 46
  47. 47. 5/20/2010HVAC Beyond Title-24 Prescriptive Packages refer to Appliance Efficiency Regulations minimums 93 ©2010 Energy Code Works, Inc.HVAC Beyond Title-24 Appliance Efficiency Regulations set HVAC efficiency minimums in Prescriptive Packages 94 ©2010 Energy Code Works, Inc. 47
  48. 48. 5/20/2010 HVAC Beyond Title-24 HVAC Strategies HVAC Strategies for Beyond Title-24: Higher AFUE (90%+) Higher SEER and higher EER HVAC zoning Ducts within conditioned space 95 ©2010 Energy Code Works, Inc. HVAC Beyond Title-24 HVAC StrategiesHVAC ZoningLiving & Sleeping Zones 96 ©2010 Energy Code Works, Inc. 48
  49. 49. 5/20/2010 HVAC HVAC StrategiesDuct LocationWithin Conditioned SpaceBuried ductsBoth require extensivedocumentation 97 ©2010 Energy Code Works, Inc. HVAC Beyond Title-24 Prescriptive requirement No prescriptive alternatives No credit potential 98 ©2010 Energy Code Works, Inc. 49
  50. 50. 5/20/2010 HVAC Beyond Title-24 Refrigerant Charge Measurement Cooling Coil Airflow Fan Watt DrawPrescriptive Package D RequirementsRefrigerant charge Measurement Climate zones 2 and 8-15 (split systems only)Cooling Coil Airflow (greater than 350 cfm per ton) Climate zones 10-15Fan Watt Draw (less than 0.58 watt per cfm) Climate zones 10-15 99 ©2010 Energy Code Works, Inc. HVAC Beyond Title-24 6 Beyond Title-24: HVAC 5 HVAC Improvements Results: 90% AFUE 14 SEER 11.00 EER HVAC Zoning 100 ©2010 Energy Code Works, Inc. 50
  51. 51. 5/20/2010 HVAC Beyond Title-24 6 Beyond Title-24: HVAC 5HVAC ImprovementsResults: 101 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Envelope Results Envelope Improvements Results: 6 Superbatt: R-15 wall insulation R-38 ceiling insulation Overhangs, sidefins Housewrap Milgard Low-E windows: 0.30 U-factor 0.30 SHGC (Energystar) 102 ©2010 Energy Code Works, Inc. 51
  52. 52. 5/20/2010HVAC Beyond Title-24 6 Beyond Title-24: HVAC 5HVAC Improvements Results:90% AFUE14 SEER 11.00 EERHVAC ZoningTotal: 25% better than Title-24 103 ©2010 Energy Code Works, Inc. Scope of this Class 5 Beyond Title-24: Envelope 6 Beyond Title-24: HVAC 7 Beyond Title-24: HERS Measures 8 SDG&E’s Incentive Programs 104 ©2010 Energy Code Works, Inc. 52
  53. 53. 5/20/2010 HERS MeasuresDuct Sealing •Sealed and HERS verified less than 6% supply fan flow •Change-outs: 15% or less of fan flow Package D, no credit Supply Duct • Conditioned space, buried ducts Credit, lots of documentation LocationSupply Duct • Reduced surface area Credit, lots of documentation Credits • NEW CEC certified AHU w/less than 2% leakage.Low Leakage Duct sealing & testing also required. AHU •CHANGED Refrigerant charge verified using one of three methods Refrigerant Invasive, non-invasive & CID. No TXV to trade against Package D, Charge No credit 105 ©2010 Energy Code Works, Inc. HERS MeasuresSupply Duct CreditsLow Leakage AHU Refrigerant Charge 106 ©2010 Energy Code Works, Inc. 53
  54. 54. 5/20/2010 HERS Measures Supply Duct Credits Low Leakage AHU Refrigerant Charge 107 ©2010 Energy Code Works, Inc. HERS MeasuresProper Refrigerant Charge Verification:Will be very common because of change-outrulesVery cost-effective Supply DuctOvercharged or undercharged system can Creditsreduce a 14 SEER unit to below 9 SEERMust be performed by an independent Low LeakageHERS rater AHU 108 ©2010 Energy Code Works, Inc. 54
  55. 55. 5/20/2010 HERS Measures CID • NEW Charge Indicator Device Credit, not yet available • NEW Requires air handling units maintain supply airflow greater CCA than 350 cfm per nominal ton of cooling capacity across the coil Package D, no credit Fan Watt • NEW Requires fan watt draw less than 0.58 watts per cfm Draw •Package D, no credit • HVAC condenser & coil correctly matched to achieve High EER high EER (above 10) Credit •Credit for A/C equipment having cooling capacity that meets Cooling calculated maximum cooling load. Credit, load calcs req. Capacity 109 ©2010 Energy Code Works, Inc. HERS MeasuresEvap Cooled • NEW Improves EER, water use limits & duct sealing, air flow, andCondensers refrigerant charge verification required. Credit Ice Storage • NEW Shifts peak energy use to off-peak hours (Ice Bear) A/C Additional HERS measures required Credit Envelope • Sealing, caulking, gaskets. Verified by HERS blower door test. Sealing •Credit • Framing stage field verification then insulation stage verification. QII • New QII verification for Spray Polyurethane Foam •Credit • Not a Title-24 credit, New Solar Home Program requirementPhotovoltaic • HERS PV verifications required. 110 ©2010 Energy Code Works, Inc. 55
  56. 56. 5/20/2010 HERS Measures HERS Measures most commonly specified for 2008:Duct Sealing Refrigerant ChargeCooling Coil Airflow Fan Watt DrawPhotovoltaic QII 111 ©2010 Energy Code Works, Inc. Scope of this Class 7 Beyond Title-24: HERS Measures HERS credits assumed in run: Duct sealing & testing (Package D) Verified fan flow (package D) Refrigerant charge verification (Package D) EER verification (credit) HVAC zoning: (credit) QII (credit) 112 ©2010 Energy Code Works, Inc. 56
  57. 57. 5/20/2010 Scope of this Class 7 Beyond Title-24: HERS MeasuresHERS creditsresults: 113 ©2010 Energy Code Works, Inc. Scope of this Class 7 Beyond Title-24: HERS Measures HERS credits left remaining: Blower door test Ice storage system Ducts in conditioned space Measured duct surface area Water cooled condenser These credits can be used for plans with more glass area than baseline (20% CFA) Also: Radiant heating Tankless water heater 114 ©2010 Energy Code Works, Inc. 57
  58. 58. 5/20/2010 Building Envelope 5 Beyond Title-24: Envelope ResultsEnvelopeImprovementsResults:Superbatt 6Radiant BarrierHousewrapMilgard Low-EWindowsAdding a tanklesswater heater wouldhave easily pushedresults to15% better thanfor LEED 115 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Extreme Compliance Shipping Container House Metal sides Metal framing 6 Over 50% glass/floor ratio Joshua Tree! 116 ©2010 Energy Code Works, Inc. 58
  59. 59. 5/20/2010 Building Envelope 5 Beyond Title-24: Extreme Compliance Shipping Container House Title-24 strategies: Isolated metal framing 117 ©2010 Energy Code Works, Inc. Building Envelope 5 Beyond Title-24: Extreme ComplianceShipping Container HouseTitle-24 strategies:Exterior shading 118 ©2010 Energy Code Works, Inc. 59
  60. 60. 5/20/2010 Building Envelope 5 Beyond Title-24: Extreme ComplianceShipping Container HouseTitle-24 strategies:HVAC zoningDuctless split unitsTankless water heatersHigh performancewindows/doors 119 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures Resistance to HERS measures: HVAC contractors (duct testing): Extra expense “our ducts don’t leak” Insulation contractors: Extra expense Unnecessary, “our installations pass inspection” 120 ©2010 Energy Code Works, Inc. 60
  61. 61. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS Measures Resistance to HERS measures: HVAC contractors (duct testing): “Our ducts don’t leak” Extra expense Most new ducts leak over 25% Common problems: Poor duct design Connections not to code Leaky fan coil units Ducts not properly supported 121 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS MeasuresResistance to HERS measures:Duct testingAir Conditioning Contractors of AmericaQuality Installation SpecificationHVAC industry guide that “establishesminimum criteria for the proper installation,maintenance and servicing of HVACsystems” 122 ©2010 Energy Code Works, Inc. 61
  62. 62. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS MeasuresResistance to HERS measures:Duct testing Air Conditioning Contractors of America Quality Installation Specification Uses identical criteria for allowable duct leakage as Title-24’s HERS duct sealing & testing procedures. 123 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures 124 ©2010 Energy Code Works, Inc. 62
  63. 63. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS MeasuresResistance to HERS measures:Insulation contractors:Extra expenseUnnecessary, “our installationspass inspection”Why is it more expensive to do itright?What guidelines are insulationcontractors using normally? 125 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS MeasuresNorth American InsulationManufacturers of AmericaGuidelines for installation ofinsulation and hiring of insulationcontractors 126 ©2010 Energy Code Works, Inc. 63
  64. 64. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS MeasuresNorth American InsulationManufacturers of AmericaGuidelines virtually identical withHERS QII compliance checklistIf contractors follows this checklistthey likely will pass HERS QIIverification inspection 127 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS Measures QII in Title-24 compliance run R-13 wall insulation is derated to R-8 without QII When QII assumed R-13 is improved to R-9.5 Baseline Title-24 assumes poor quality insulation QII is credit for good quality installation 128 ©2010 Energy Code Works, Inc. 64
  65. 65. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS MeasuresQII in real world: The good 129 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS MeasuresQII in real world: the bad 130 ©2010 Energy Code Works, Inc. 65
  66. 66. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS MeasuresQII in real world: the ugly 131 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS MeasuresQII in real world 132 ©2010 Energy Code Works, Inc. 66
  67. 67. 5/20/2010 Beyond Title-24 7 Beyond Title-24: HERS MeasuresBottom lineHERS measures represent one of the most cost-effective energy savings strategies in the energycode.Energy savings & quality controlHVAC contractors and Insulation contractors willNeed to become familiar with HERS criteria forcompliance.HERS requirements are virtually identical to theirown industry installation guidelines 133 ©2010 Energy Code Works, Inc. Beyond Title-24 7 Beyond Title-24: HERS MeasuresQII Training for ContractorsCity of Santa Monicawww.smgov.net/departments/ose/categories/buildGreen.aspx 134 ©2010 Energy Code Works, Inc. 67
  68. 68. 5/20/2010 Compliance Forms Certificate of Compliance (CF-1R) Submitted to plancheck and Prepared by Title-24 consultant or approved copy provided to General designer ContractorInstallationCF-6R InstallationCertificateCF-4R FieldVerification/HERS 135 ©2010 Energy Code Works, Inc. Compliance Forms Certificate of Compliance (CF-1R) Submitted to plancheck and Prepared by Title-24 consultant or approved copy provided to General designer ContractorInstallationCF-6R InstallationCertificateCF-4R Field Certificate of Installation (CF-6R)Verification/HERS Filled out by contractor and sub- Provided to inspector & HERS Rater contractors & later to the homeowner 136 ©2010 Energy Code Works, Inc. 68
  69. 69. 5/20/2010 Compliance Forms Certificate of Compliance (CF-1R) Submitted to plancheck and Prepared by Title-24 consultant or approved copy provided to General designer ContractorInstallationCF-6R InstallationCertificateCF-4R Field Certificate of Installation (CF-6R)Verification/HERS Filled out by contractor and sub- Provided to inspector & HERS Rater contractors & later to the homeowner Certificate of Verification and Diagnostic (CF-4R) Completed by HERS Rater Registered with CHEERS or Calcerts and copy provided to contractor 137 ©2010 Energy Code Works, Inc. Energy Code Works, Inc. Mark Madison CEPE, CEA, AEE, HERS Rater, GreenPoint Rater, ResNet Rater, Member CABEC, CHEERS 69

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