RESNET ANNUAL CONFERENCE FEBRUARY 17, ENERGY STAR for Homes: The Road Ahead
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1 RESNET ANNUAL CONFERENCE FEBRUARY 17, 2009 ENERGY STAR for Homes: The Road Ahead
2 Sam
3 Dean
4 Goal: How: METHOD TO ENERGY STAR MADNESS < Risk > Customer Satisfaction = > Differentiation > Environmental Protection > National Security Control Air Flow Affordable Comfortable Healthy Durable Control Thermal Flow Better Home Lower Cost = Badge of Honor Control Moisture Flow Loads/ QA/QC Driving Forces Fans Conduction Convection Radiation Vapor Bulk Efficient HVAC Air Sealing Air Sealing Air Sealing Air Sealing 1996 Verification Tight Ducts Tight Ducts Tight Ducts Low-E Windows Low-E Windows Low-E Windows 2006 Efficient WH Efficient Lgtg./Appl. Air Barriers Air Barriers Insulation Alignment Air Barriers Insulation Alignment Air/Vapor Barriers Right-Sizing 2011 HVAC Quality Inst. Hot Water Distribution House Size Pressure Balancing Insulation Installation Min. Thermal Bridging Insulation Installation Radiant Barriers Pressure Balancing Ventilation Dehumid. in Hot/Humid Water Man. Construction
5 METHOD TO INDOOR AIR PLUS MADNESS Why: < Risk of IAQ Problems = Trivial Extra Cost < Risk > Customer Satisfaction > Differentiation = Affordable Comfort Health Durability How: Source Control Dilution Filtration Moisture Bulk Moisture Vapor Radon Biological Combustion Chemical Ventilation Filters/ Air Cleaning Water Man. Construc. Moisture Resist. Mat. Protect Materials Air Sealing Air Barriers Tight Ducts Radon Resist. Con. Test Kits Zones 1 & 2 Seal Foundation Screen Openings Direct/Power Vent Equip. FPL/Stove Vented/Stds. CO Alarms Pressed Wood Inter. Paints Finishes Carpets Whole-Hse Ventilation Spot Ventilation Garage Ventilation MERV 8 Filter No Ozone Generators HVAC Quality Inst. Proper Vap. Barriers No Smoking Com. Areas Garage Isolation What: Dehum. In Hot/Humid
6 ENERGY STAR QUALIFIED HOMES 2011 SPEC KEY INNOVATIONS More rigorous mandatory requirements Substantial increase in checklists Size Factor Note that HERS Index threshold under development.
7 ENERGY STAR QUALIFIED HOMES 2011 SPEC PRESCRIPTIVE/PERFORMANCE PATH Mandatory Requirements for All Labeled Homes + Performance Path Minimum HERS Index Score Adjusted for Size or Prescriptive Path Builder Option Package Specifications (only for homes with CFA < Benchmark Home)
8 ENERGY STAR QUALIFIED HOMES 2011 SPEC MANDATORY REQUIREMENTS Duct Leakage - Outside: < 4 CFM/100 sf CFA - Total: < 6 CFM/100 sf CFA Hot Water Efficiency - Shower Heads < 2.0 gpm - Efficient Hot Water Distribution ENERGY STAR Products - Refrigerator, Dishwasher, Clothes Washer where provided - ALP or Bulbs in 80% Sockets - Ceiling Fans, where provided
9 ENERGY STAR QUALIFIED HOMES 2011 SPEC CHECKLISTS Thermal Bypass Quality Framing HVAC Quality Installation Contractor HVAC Quality Installation Verifier Indoor Air Quality Water Managed Construction
10 ENERGY STAR QUALIFIED HOMES 2011 SPEC SIZE ADJUSTMENT FACTOR STRATEGY =
11 ENERGY STAR QUALIFIED HOMES 2011 SPEC SIZE ADJUSTED HERS INDEX SCORE Benchmark Home Size BR s CFA 1,045 1,620 2,200 3,010 3,300 3,960 4,620 5,280 CFA Benchmark Home 0.05 CFA Rated Home x HERS Index Score Size Modification Factor not to exceed 1.0
12 ENERGY STAR QUALIFIED HOMES 2011 SPEC SIZE PENALTY EXAMPLE HERS Index Threshold for 3 BR Home Threshold with Size Penalty for 3 BR Home HERS Index Perf. or Prescrip. Performance Only 77 1,100 2,200 3,300 4,400 House Size [CFA in sq.ft.] 5,500
13 CLIMATE CHOICE Builds on ENERGY STAR specs Acts as farm system [Expedite specific bundle of targeted technologies that don t yet meet ENERGY STAR criteria]
14 CLIMATE CHOICE ADVANCED TECHS. Base: ENERGY STAR Indoor airplus Super Air-Tight Construction Super Insulation Super Windows Super-Efficient Equipment Ducts Inside Conditioned Space ENERGY STAR Water Heating
15 MARKET TRANSFORMATION: ONE BUNDLE AT A TIME Size Adjustment High Eff. HVAC Equip. Tight Ducts Air Sealing Low-E Windows Verification Lighting/ Appliances High Eff. Lgtg./Appl. High Eff. Water Htr. Right-Sizing Insulation Alignment Air Barriers HVAC Quality Installation Water Heating Distribution Insulation Installation Min. Thermal Bridging Ventilation Field Verified Pressure Balancing Water Man. Construction Safe Materials Combustion Safety Techs. Pest Barriers Radon Resist. Construction Ventilation Field Verified Pressure Balancing Water Man. Construction Behavior/ Design ENERGY STAR WH Super-Tight Construction Super Eff. HVAC Equip Ducts in Condit. Space Super Window Insulation 50%> Code Climate Choice
16 NICHE OR MAINSTREAM PRODUCT?
17 TIMELINE Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 ES 2011 Vetting Broad Vetting Revise V.3 Spec 2nd Vetting if required Clim. Choice Design: Draft ANHC Spec Vet ANHC Spec ES 2011 Implementation: Launch 1/1/10 with 12 month grace period Enforce in states w/rigorous codes Promote where ES is local code Enforce everywhere 1/1/11 Climate Choice Implementation: Launch ANHC Builder Selection Develop marketing messages and tools Ongoing Construct, label, promote, evaluate homes Fine tune spec and messaging, web site
18 ENERGY STAR QUALIFIED HOMES VERSION 3: HVAC QUALITY INSTALLATION Right-Sizing Air Distribution Refrigerant Charge Equipment (ACCA Manual J/S) Ducts (ACCA Manual D) Terminals (ACCA Manual T) Duct Leakage Static Pressure Flow Across Coil Room-by-Room Air Flow Testing TXV Valve
19 EFFICIENT WATER HEATING SYSTEM Energy Factor Distribution Insulated Piping Heat Trap Above Tank/Heater
20 ENERGY STAR QUALIFIED HOMES VERSION 3: WATER HEATING DISTRIBUTION Core System (Wet Walls) Manifold System Demand Pumping System
21
22 MANIFOLD HOT WATER DISTRIBUTION
23
24 DEMAND PUMPING SYSTEM
25 EFFECTIVE INSULATION SYSTEM Zero-Tolerance (Gaps, Voids, Compression) Air-Tight Assemblies Six-Sided Air Barrier (Thermal Bypass Checklist) Minimal Thermal Bridging
26 FRAMING PROBLEM EXPOSED
27 ENERGY STAR QUALIFIED HOMES VERSION 3: MINIMAL THERMAL BRIDGING Choose One System: Optimum Value Engineered Framing (OVE) Insulated Sheathing Structural Insulated Panels (SIPS) Insulated Concrete Forms (ICF) Plus: Raised Heel Trusses Raised HVAC Attic Platform Framing
28 MINIMAL THERMAL BRIDGING: OVE FRAMING Courtesy of Building Science Corp.
29 MINIMAL THERMAL BRIDGING: OVE FRAMING Courtesy of Building Science Corp. Courtesy of Southface Institute
30 MINIMAL THERMAL BRIDGING: OVE FRAMING Ladder T Allows insulation in exterior wall cavity at wall intersections
31 MINIMAL THERMAL BRIDGING: INSULATED SHEATHING
32 MINIMAL THERMAL BRIDGING: STRUCTURAL INSULATED PANELS
33 MINIMAL THERMAL BRIDGING: INSULATED CONCRETE FORMS
34 MINIMAL THERMAL BRIDGING: RAISED HEEL TRUSSES
35 MINIMAL THERMAL BRIDGING: RAISED HEEL TRUSSES
36 MINIMAL THERMAL BRIDGING: RAISED HVAC PLATFORM FRAMING
37
38
39 VENTILATION WHOLE-HOUSE VENTILATION CONTINUOUS EXHAUST FRESH AIR DAMPER DUCTED FRESH AIR SUPPLY
40 VENTILATION: WHOLE-HOUSE VENTILATION ERV
41 VENTILATION: SPOT VENTILATION
42 Screw pinning damper closed- No airflow Only testing will find these things
43 # 2 problem: Very restrictive ductwork Exit grille is over here! Poor ducting installation
44 Soffitt guy doesn t do pipe Any problem with a little extra?
45 This is the reading from a 110 cfm fan: OUCH! Testing tells the story
46 PRESSURE BALANCING: PROBLEM
47 PRESSURE BALANCING: SOLUTIONS TRANSFER GRILLE JUMP DUCT
48 MOISTURE CONTROL: WATER MANAGED ROOFS BITUMINOUS MEMBRANE AT VALLEYS
49 MOISTURE CONTROL: WATER MANAGED ROOFS MORE ROOF FLASHING DETAILS
50 MOISTURE CONTROL : WATER MANAGED WALLS DRAINAGE PLANE DESIGN
51 MOISTURE CONTROL: WATER MANAGED WALLS BEST PRACTICE INSTALLATION WINDOW/DOOR PAN FLASHING
52 MOISTURE CONTROL: WATER MANAGED WALLS WINDOW/DOOR PAN FLASHING
53 MOISTURE CONTROL: WATER MANAGED FOUNDATIONS FOUNDATION DRAINAGE SYSTEM WITH CAPILLARY BREAKS Free-draining back-fill Perforated drainage pipe in gravel with fabric filter Poly vapor retarder/capillary break Course gravel granular drainage Pipe connection to granular drainage
54 V.3: THERMAL ENVELOPE Envelope Insulation: Prescriptive R-value requirements > 2004IRC Thermal Bypass Checklist for complete air barriers Insulation installation RESNET Grade 1 Quality Framing Checklist Raised Heel Trusses HVAC Platform where attic air handler Radiant Barrier where ducts in attic in Climate Zones 1-3 Windows: ENERGY STAR
55 V.3: HVAC EQUIP./QUALITY INSTALL HVAC Equipment: ENERGY STAR Heating in Northern climates ENERGY STAR Cooling in Southern climates TXV Valve if refrig. charge not verified Quality Installation Checklist: ACCA Manual J and S equipment sizing or equivalent Total duct leakage < 4 cfm to outdoors/100 sq. ft. ACCA Manual D duct sizing or equiv. ACCA Manual T terminal sizing or equiv. Ensure proper refrigerant charge Verified room-by-room air flow Verified air flow across coil/heat exch. Pressure balancing in bedrooms (transfer grills, cross-over ducts, or dedicated returns)
56 V.3: HVAC VENTILATION HVAC Ventilation: Whole-house per ASHRAE 62.2 min. Spot ventilation per ASHRAE 62.2 Ventilation Installation Checklist Safety: Ventless fireplaces not allowed Air handler and ducts shall not be located in garage
57 V.3: WATER HEATING SYSTEM Water Heating System Efficient Equipment; Efficient water heating Efficient Distribution: Shower heads < 2.0 gpm Efficient plumbing layout (core, manifold, or demand pumping)
58 ANHC BOP: LIGHTING/APPLIANCES Lighting Appliances ENERGY STAR ALP (60% ENERGY STAR QUALIFIED FIXTURES), or 80% ENERGY STAR Qualified Bulbs ENERGY STAR Qualified Appliances (Refrigerator, Dishwasher, Clothes Washer where provided by Builder)
59 V.3: BULK MOISTURE CONTROL Moisture Control Water-managed roof Water-managed walls Water-managed foundation (see EPA Indoor Air Plus specifications)
60 PATH TO NO/LOW CARBON ENERGY STAR for Homes 2006 Specs ENERGY STAR for Homes 2011 Draft Specs Advanced Technologies Advanced Design Occupant Behavior Renewable Power (Purchase or On-site) EPA Indoor airplus
61 ADVANCED NEW HOME CONSTRUCTION Builds on ENERGY STAR specs Acts as farm system [Expedite specific bundle of targeted technologies that don t yet meet ENERGY STAR criteria]
62 MARKET TRANSFORMATION: ONE BUNDLE AT A TIME Dehumid. In Warm/Humid. Lighting/ Appliances Size Penalty Safe Materials Occupant Behavior HVAC Quality Installation Combustion Safety Techs. Design High Eff. HVAC Equip. High Eff. Lgtg./Appl. Water Heating Distribution Pest Barriers Super Eff. Or Solar WH Tight Ducts High Eff. Water Htr. Min. Thermal Bridging Radon Resist. Construction Super Eff. HVAC Equip Air Sealing Right-Sizing Ventilation Field Verified Ventilation Field Verified Ducts in Condit. Space Low-E Windows Proper Insulation Pressure Balancing Pressure Balancing Super Window Verification Air Barriers Water Man. Construction Water Man. Construction Insulation 50%> Code V.1 V.2 V.3
63 RETOOLING HOW WE BUILD HOMES Net-Zero Ready Homes with: ~30% - 50% Less Square Feet but 100% Function Framing Plumbing HVAC Equipment Size Cooling/Heating Loads Waste Construction Time ~70% Less Call-Backs
64 WHY OPPORTUNITY TO RETOOL THE NUMBERS 11+million 1+ million 12+ million (1/5)
65 3 Bedroom 1,150 sq. ft. Open layout Generous Circulation Built-in Furniture Varying Ceiling Height Outdoor/Indoor Linkages
66
67
68 NICHE OR MAINSTREAM PRODUCT?
69 TIMELINE Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 V.3 Init. Vet: Draft V.3 Spec V.3 Init. Vetting Revise V.3 Spec ANHC Design: Draft ANHC Spec Vet ANHC Spec V.3 2 nd Vet: Broad Vetting Revise V.3 Spec Addit. Vetting if required V.3 Implementation: Launch 1/1/10 with 12 month grace period Enforce V.3 in states w/rigorous codes Promote V.3 where ES is local code Enforce V.3 everywhere 1/1/11 ANHC Implementation: Launch ANHC Builder Selection Develop marketing messages and tools Ongoing Construct, label, promote, evaluate homes Fine tune spec and messaging
70 HOW TO GET MORE INFORMATION On the Web at:
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