Oh No, , Not Another Change!ncenergystar.org/sites/ncenergystar.org/files... · •Value Proposition Opportunities …in other words,…in other words, protect the ‘Brand’! Goal:

NORTH CAROLINA ENERGY STAR SUMMITNORTH CAROLINA ENERGY STAR SUMMITOCTOBER 28, 2008OCTOBER 28, 2008

ENERGY STAR for Homes Version 3ENERGY STAR for Homes Version 3

Oh No, Oh No, ,,Not Another Change!Not Another Change!gg

WHICH BEGS THE QUESTION:WHICH BEGS THE QUESTION:QQWHY CHANGEWHY CHANGE

• Code Changes• Standard Practice Improvementsp• Value Proposition Opportunities

…in other words,…in other words, protect the ‘Brand’!

Goal: AffordableComfortable

< Risk> Customer Satisfaction

Diff ti ti == Better Home==METHOD TO ENERGY STAR MADNESSMETHOD TO ENERGY STAR MADNESS

ControlControlControlHow:

ComfortableHealthyDurable

> Differentiation> Environmental Protection> National Security

== Better HomeLower Cost==

ControlMoisture Flow

ControlThermal Flow

ControlAir Flow

Loads/QA/QC

Driving Forces Fans Conduction Convection Radiation Vapor Bulk

Air Sealing

Tight Ducts

Air Sealing

Tight Ducts

EfficientHVAC

Verification

Air Sealing Air Sealing

Tight DuctsV.1Low-E

Windows

Air Barriers

Low-EWindows

Air/VaporBarriers

Low-EWindows

Air Barriers Air BarriersEfficientWH

Proper Insulation

RadiantBarriers

Barriers

Water Man.Roofs

Right-SizingProperInsulation

PressureBalancing

Min.ThermalBridging

WH

HVACQuality Inst

EfficientLgtg./Appl.V.2

PressureBalancingBarriers Roofs

Ventilation

Balancing Bridging

Dehumid. inHot/Humid

Quality Inst.Hot WaterDistribution

HouseSize

V.3 Water Man.Walls

Water Man.Foundation

Balancing

METHOD TO INDOOR AIR PLUS MADNESSMETHOD TO INDOOR AIR PLUS MADNESS

Why:AffordableComfortHealth

< Risk> Customer Satisfaction ==< Risk of IAQ Problems ==

How:

HealthDurability

> Customer Satisfaction> Differentiation ==

Source FiltrationDilution

Trivial Extra Cost ==

MoistureBulk

MoistureVapor Radon Biological Combustion Chemical

Control FiltrationDilution

Ventilation Filters/Air Cleaning

RadonResist. Con.

Test KitsZones 1 & 2

Air Sealing

Air BarriersMoistureResist. Mat.

Water Man.Construc.

MERV 8Filter

No OzoneGenerators

Whole-HseVentilation

SpotVentilationG

PressedWood

Inter. Paints Finishes

Direct/PowerVent Equip.FPL/Stove

Vented/Stds.

SealFoundation

ScreenOpenings

Tight Ducts

G

CO AlarmsGarage

VentilationCarpets

No SmokingCom. Areas

ProtectMaterials

HVACQuality Inst.P V

What:

GarageIsolation

Dehum. InHot/Humid

Proper Vap.Barriers

MARKET TRANSFORMATION:MARKET TRANSFORMATION:ONE BUNDLE AT A TIMEONE BUNDLE AT A TIME

Safe Size/SpaceSize Penalty

CombustionSafety Techs.

Materials

Super Eff. orSolar WH

pEfficiency

HVAC QualityInstallation

Size Penalty

Tight Ducts

High Eff.HVAC Equip.

Radon Resist.C t ti

Pest Barriers

Super Eff.HVAC E i

Dehumid. InWarm/Humid

High Eff.W t Ht

High Eff.Lgtg./Appl.

Min. ThermalB id i

Water HeatingDistribution

E

Air Sealing

g

VentilationField Verified

Construction

S

Ducts in Condit. Space

HVAC Equip

P

Right-Sizing

Water Htr.

P

VentilationField Verified

Bridging

Verification

Low-EWindows

Water Man.Construction

PressureBalancing

Insulation50%> Code

Super Window

Air Barriers

ProperInsulation

Water Man. Construction

PressureBalancing

Construction

V.1V.1 V.2V.2 V.3V.3 ANHCANHC

50%> CodeConstruction

EFFECTIVE SQUARE FEETEFFECTIVE SQUARE FEETEFFECTIVE SQUARE FEETEFFECTIVE SQUARE FEET

• Open Layouts• Remaining Circulation Generousg• Built-in Furniture• Varying Ceiling Heights• Varying Ceiling Heights• Outdoor/Indoor Linkages• Finish and Trim• Good Designg• Landscape Architecture

Open layoutOpen layoutGenerous CirculationGenerous Circulationp yp y

BuiltBuilt--in Furniturein FurnitureVarying Ceiling HeightVarying Ceiling HeightOutdoor/Indoor LinkagesOutdoor/Indoor LinkagesOutdoor/Indoor LinkagesOutdoor/Indoor Linkages

1,150 sq. ft.1,150 sq. ft.

$20 000$20,000

$40 000$40,000

ENERGY STAR QUALIFIED HOMES VERSION 3:ENERGY STAR QUALIFIED HOMES VERSION 3:

SIZE PENALTYSIZE PENALTY

Current HERS Index ThresholdCurrent HERS Index ThresholdCurrent HERS Index ThresholdCurrent HERS Index ThresholdBOP ThresholdBOP Threshold

BOP Threshold with Size Penalty BOP Threshold with Size Penalty

87888990

ex

84858687

HER

S In

d

80818283H

801,100 2,200 3,300 4,400

House Size [CFA in sq.ft.]

HVAC EQUIPMENT RIGHT SIZINGHVAC EQUIPMENT RIGHT SIZINGHVAC EQUIPMENT RIGHT SIZINGHVAC EQUIPMENT RIGHT SIZING

78

4567

ER

~~30% > eff.30% > eff.

ER

1234

EE

Increase cycle time Increase cycle time from 3 to 8 min.from 3 to 8 min.

EE

01

0 1 2 3 4 5 6 7 8 9 10 11

Run-Time (minutes)Run-Time (minutes)


HVAC QUALITY INSTALLATIONHVAC QUALITY INSTALLATION

Right-Sizing Equipment (ACCA Manual J/S)Ducts (ACCA Manual D)

Terminals (ACCA Manual T)

Air Distribution

Terminals (ACCA Manual T)

Duct LeakageStatic Press reStatic Pressure

Flow Across CoilRoom-by-Room Air Flow

Refrigerant Charge TestingTXV Valve

EFFICIENT WATER HEATING SYSTEMEFFICIENT WATER HEATING SYSTEMEFFICIENT WATER HEATING SYSTEMEFFICIENT WATER HEATING SYSTEM

• Energy Factor• Distribution• Distribution• Insulated Piping• Heat Trap Above Tank/Heater


WATER HEATING DISTRIBUTIONWATER HEATING DISTRIBUTION

• Core System (Wet Walls)Manifold System• Manifold System

• Demand Pumping System

MANIFOLD HOT WATER DISTRIBUTIONMANIFOLD HOT WATER DISTRIBUTIONMANIFOLD HOT WATER DISTRIBUTIONMANIFOLD HOT WATER DISTRIBUTION

DEMAND PUMPING SYSTEMDEMAND PUMPING SYSTEMDEMAND PUMPING SYSTEMDEMAND PUMPING SYSTEM

EFFECTIVE INSULATION SYSTEMEFFECTIVE INSULATION SYSTEMEFFECTIVE INSULATION SYSTEMEFFECTIVE INSULATION SYSTEM

• Zero-Tolerance (Gaps, Voids, Compression)

• Air Tight Assemblies• Air-Tight Assemblies• Six-Sided Air Barrier (Thermal Bypass Checklist)

• Minimal Thermal Bridging

Where 4 5 must and 9 isWhere 4 is good;

5 must be better;

and 9 is Great!

Courtesy of Building Science Corp.

Effective Insulation ‘System’:Effective Insulation ‘System’:Uninsulated Corners/IntersectionsUninsulated Corners/Intersections

uninsulated corner uninsulated wall intersection

~48 wall corners and intersections~48 wall corners and intersectionsalong with boxed out framingalong with boxed out framingalong with boxed out framingalong with boxed out framing

= ~ 80 feet Uninsulated Wall!

FRAMING PROBLEM EXPOSEDFRAMING PROBLEM EXPOSEDFRAMING PROBLEM EXPOSEDFRAMING PROBLEM EXPOSED


MINIMAL THERMAL BRIDGINGMINIMAL 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

MINIMAL THERMAL BRIDGING:MINIMAL THERMAL BRIDGING:

OVE FRAMINGOVE FRAMING

Courtesy of Building Science Corp.



Courtesy of Building Science Corp.Courtesy of Building Science Corp.

Courtesy of Southface InstituteCourtesy of Southface Institute



Ladder T Ladder T ––Allows insulation Allows insulation i t i ll i t i ll in exterior wall in exterior wall cavity at wall cavity at wall intersectionsintersectionsintersectionsintersections


INSULATED SHEATHINGINSULATED SHEATHING


STRUCTURAL INSULATED PANELSSTRUCTURAL INSULATED PANELSSTRUCTURAL INSULATED PANELSSTRUCTURAL INSULATED PANELS


INSULATED CONCRETE FORMSINSULATED CONCRETE FORMS


RAISED HEEL TRUSSESRAISED HEEL TRUSSES


RAISED HEEL TRUSSESRAISED HEEL TRUSSES


RAISED HVAC PLATFORM FRAMINGRAISED HVAC PLATFORM FRAMING

VENTILATION

WHOLE-HOUSE VENTILATION

FRESH AIR FRESH AIR DUCTED FRESH AIR SUPPLYDUCTED FRESH AIR SUPPLYCONTINUOUS EXHAUSTCONTINUOUS EXHAUST FRESH AIR FRESH AIR DAMPERDAMPER

DUCTED FRESH AIR SUPPLYDUCTED FRESH AIR SUPPLYCONTINUOUS EXHAUSTCONTINUOUS EXHAUST

VENTILATION:

WHOLE-HOUSE VENTILATION

ERVERV

VENTILATION:

SPOT VENTILATION

Maintenance required

Leaves can get sucked into grilles

Ah, another stuck damper,

The saga continues !

Testing findings

Screw pinning damper closed- No airflow

Only testing will find these things

# 2 problem: Very restrictive ductwork

Exit grille is over here !g

Poor ducting installation

Soffitt guy doesn’t do pipe

Any problem with a little extra ?

This is the reading from a 110 cfm fan: OUCH !

Testing tells the story

PRESSURE BALANCING: PROBLEMPRESSURE BALANCING: PROBLEM

PRESSURE BALANCING: SOLUTIONSPRESSURE BALANCING: SOLUTIONS

JUMP DUCTJUMP DUCTTRANSFER GRILLETRANSFER GRILLE

MOISTURE CONTROL:MOISTURE CONTROL:

WATER MANAGED ROOFSWATER MANAGED ROOFS

BITUMINOUS MEMBRANE AT VALLEYSBITUMINOUS MEMBRANE AT VALLEYS


WATER MANAGED ROOFSWATER MANAGED ROOFS

MORE ROOF FLASHING DETAILSMORE ROOF FLASHING DETAILSMORE ROOF FLASHING DETAILSMORE ROOF FLASHING DETAILS ……

MOISTURE CONTROL :MOISTURE CONTROL :

WATER MANAGED WALLSWATER MANAGED WALLS

DRAINAGE PLANE DESIGNDRAINAGE PLANE DESIGN



BEST PRACTICE INSTALLATIONBEST PRACTICE INSTALLATIONBEST PRACTICE INSTALLATIONBEST PRACTICE INSTALLATION

WINDOW/DOOR PAN FLASHINGWINDOW/DOOR PAN FLASHING



WINDOW/DOOR PAN FLASHINGWINDOW/DOOR PAN FLASHINGWINDOW/DOOR PAN FLASHINGWINDOW/DOOR PAN FLASHING


WATER MANAGED FOUNDATIONSWATER MANAGED FOUNDATIONSWATER MANAGED FOUNDATIONSWATER MANAGED FOUNDATIONS

FOUNDATION DRAINAGE SYSTEMFOUNDATION DRAINAGE SYSTEMFOUNDATION DRAINAGE SYSTEM FOUNDATION DRAINAGE SYSTEM WITH CAPILLARY BREAKSWITH CAPILLARY BREAKS

FreeFree--draining backdraining back--fillfillPerforated drainage pipe in gravel Perforated drainage pipe in gravel with fabric filterwith fabric filter

FreeFree--draining backdraining back--fillfill

Poly vapor retarder/capillary breakPoly vapor retarder/capillary break

Course gravel granular drainageCourse gravel granular drainage

Pipe connection to granular drainagePipe connection to granular drainage

MOISTURE/RADON CONTROL:MOISTURE/RADON CONTROL:

WATER MANAGED FOUNDATIONSWATER MANAGED FOUNDATIONS

UNVENTED CRAWLSPACEUNVENTED CRAWLSPACEUNVENTED CRAWLSPACEUNVENTED CRAWLSPACE

POLY UNDER SLABPOLY UNDER SLABVAPOR AND RADON BARRIERVAPOR AND RADON BARRIER

PATH TO NO/LOW CARBONPATH TO NO/LOW CARBONPATH TO NO/LOW CARBONPATH TO NO/LOW CARBON

RenewableENERGY

STAR ENERGY

STAR ENERGY

STAR Power

(Purchase orOn-site)

OccupantBehavior

Advanced Design

Advanced Technologies

for HomesV.3

~2010Specs

for HomesV.2

2006Specs

for HomesV.1

1995 Specs

Advanced New Home Construction

ADVANCED NEW HOME CONSTRUCTIONADVANCED NEW HOME CONSTRUCTIONADVANCED NEW HOME CONSTRUCTIONADVANCED NEW HOME CONSTRUCTION

• Builds upon existing ENERGY STAR id liprogram guidelines

• Acts as “farm system”• Expedites a very specific bundle of

technologies that don’t yet meet g yENERGY STAR criteria

ANHC BOP: THERMAL ENVELOPEANHC BOP: THERMAL ENVELOPEANHC BOP: THERMAL ENVELOPEANHC BOP: THERMAL ENVELOPE

Thermal Insulation:Thermal Envelope

Insulation:• Prescriptive R-value requirements >

(or overall UA <) 50% IECC 2006Th l b k ll (f i f t 12%)• Thermal break wall (framing factor < 12%)

• RESNET Level 1 Insulation (gaps, voids, compression <2%)

• Complete air barrier assembly (ENERGY STAR TBC)p y ( )

Windows:• Climate Zones 1 - 3: SHGC < .2• Climate Zones 3 - 5: SHGC < 27;• Climate Zones 3 - 5: SHGC < .27;

U-Value < .3• Climate > Zones 6 : U-Value < .2

~$9,000 - $14,000 Incremental Cost

ANHC BOP: HVAC PROPER INSTALLANHC BOP: HVAC PROPER INSTALLANHC BOP: HVAC PROPER INSTALLANHC BOP: HVAC PROPER INSTALL

HVAC Proper Ducts (alternate is ductless HVAC system):HVAC Proper Installation

Ducts (alternate is ductless HVAC system):•Ducts inside conditioned space•ACCA Manual D and T duct and terminal sizing or equiv.•Compact duct layouto pa du ayou•Total duct leakage < 3% of fan flow•Verified room-by-room air flow •Verified air flow across coil/heat exchanger per man. specPressure balancing in bedrooms (transfer grills cross over•Pressure balancing in bedrooms (transfer grills, cross-over

ducts, or dedicated returns)Ventilation:•Verify whole-house ventilation air flow meets ASHRAE min.y•Verify spot ventilation air flow meets ASHRAE minimumEquipment:•ACCA Manual J and S equipment sizing or equivalent•Ensure proper refrigerant charge

~$200 - $1,000 Incremental Cost•Ensure proper refrigerant charge

ANHC BOP: HVAC EQUIPMENTANHC BOP: HVAC EQUIPMENTANHC BOP: HVAC EQUIPMENTANHC BOP: HVAC EQUIPMENT

HVAC Climate Cold (CZ > Warm (CZ 3- Hot (CZ 1-HVAC Equipment

Climate Cold (CZ >6)

Warm (CZ 35)

Hot (CZ 12)

AFUE > 94% > 90% > 80%

SEER > 13 > 15 > 18HSPF > 10 > 9 > 8.2COP (GHP) > 5 > 5 > 5Ventilation HRV Supply-only ERV or

supply-onlypp y y

Multiple or variable speed equipment all climates with high-efficiency fan and air-tight cabinet

Dehumidification with either low SHR (< .7) or stand-alone


Dehumidification with either low SHR (< .7) or stand alone dehumidifier for Hot/Humid Climate (IECC 2006 Map):

ANHC BOP: WATER HEATING SYSTEMANHC BOP: WATER HEATING SYSTEMANHC BOP: WATER HEATING SYSTEMANHC BOP: WATER HEATING SYSTEM

Water Heating System

Efficient Equipment;•heat pump electric > 2.0 COP, or •direct-vent gas > .8 EF, or•direct vent gas > .8 EF, or •Solar hot water system or•desuperheater in Climate Zones 1-3Efficient Distribution:•Insulate hot water piping minimum R-4•Low-flow faucets and showerheads•Efficient demand pumping manifold or core layout•Efficient demand pumping, manifold, or core layout


ANHC BOP: LIGHTING/APPLIANCESANHC BOP: LIGHTING/APPLIANCESANHC BOP: LIGHTING/APPLIANCESANHC BOP: LIGHTING/APPLIANCES

Lighting 100% ENERGY STAR Qualified Fixtures

Appliances ENERGY STAR Qualified Refrigerator, Dishwasher, Clothes Washer

• ~$1,000 - $2,000 Incremental Cost

ANHC BOP: WATER MANAGED CONSTANHC BOP: WATER MANAGED CONSTANHC BOP: WATER MANAGED CONST.ANHC BOP: WATER MANAGED CONST.

Moisture Control

Water-managed roof, walls, foundation (see EPA IAP specifications)

~$0 Incremental Cost

NICHE OR MAINSTREAM PRODUCT?NICHE OR MAINSTREAM PRODUCT?NICHE OR MAINSTREAM PRODUCT?NICHE OR MAINSTREAM PRODUCT?

ENERGY STAR vs ANHCENERGY STAR vs ANHC

ENERGY STAR ENERGY STAR Advanced New Home Advanced New Home

ENERGY STAR vs. ANHCENERGY STAR vs. ANHC

ENERGY STAR ENERGY STAR Qualified HomeQualified Home

Advanced New Home Advanced New Home ConstructionConstruction

Mainstream BuildersMainstream Builders Innovative BuildersInnovative Builders

Cost Effective Cost Effective CostCost Effective Effective Cost Effective Cost Effective TodayToday

CostCost--Effective Effective FutureFuture

Market Ready Market Ready Near Market Ready Near Market Ready Market Ready Market Ready InfrastructureInfrastructure

Near Market Ready Near Market Ready InfrastructureInfrastructure

Maximum Maximum Restricted Restricted Maximum Maximum ParticipationParticipation

Restricted Restricted ParticipationParticipation

THE ELEPHANT IN THE ROOMTHE ELEPHANT IN THE ROOMTHE ELEPHANT IN THE ROOMTHE ELEPHANT IN THE ROOM

Min SpecsMin Specs Builders ChallengeBuilders Challenge ANHCANHCMin. SpecsMin. Specs Builders ChallengeBuilders Challenge ANHCANHCMax SizeMax Size NoneNone SpecifiedSpecified

InsulationInsulation HERS 70HERS 70 50% > Code50% > CodeInsulationInsulation HERS 70HERS 70 50% Code50% Code

WindowsWindows ENERGY STARENERGY STAR Super WindowsSuper Windows

Duct EfficiencyDuct Efficiency 5% outdoors/10% total5% outdoors/10% total In Cond. Space/5% tot.In Cond. Space/5% tot.Duct EfficiencyDuct Efficiency 5% outdoors/10% total5% outdoors/10% total In Cond. Space/5% tot.In Cond. Space/5% tot.

HVAC InstallationHVAC Installation RightRight--SizingSizing ACCA QI StandardACCA QI Standard

VentilationVentilation WholeWhole--house/Spothouse/Spot ASHRAE 62.2 VerifiedASHRAE 62.2 VerifiedV nt at onV nt at on WhoWho hous /Spothous /Spot SH E 6 . V r fSH E 6 . V r f

Water Heating Sys. Water Heating Sys. HERS 70 (Equip. only)HERS 70 (Equip. only) Super Eff Htr + DistribSuper Eff Htr + Distrib

Lighting/AppliancesLighting/Appliances HERS 70HERS 70 100% ENERGY STAR100% ENERGY STARg g ppg g pp

Moisture ControlMoisture Control Water Man. Construc.Water Man. Construc. Water Man. Construc.Water Man. Construc.

TIMELINETIMELINETIMELINETIMELINE

2008 2009 2010 20112008 2009 2010 2011

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

V 3 Init Vet:V.3 Init. Vet:Draft V.3 SpecV.3 Init. VettingRevise V.3 Spec V.3 2nd Vet:

Broad VettingRevise V 3 SpecRevise V.3 SpecAddit. Vetting

if reqd.

ANHC Design:Draft ANHC Spec

V.3 Implementation:Launch 1/1/10 with 12 month grace periodEnforce V.3 in states w/rigorous codesPromote V.3 where ES is local codeEnforce V 3 everywhere 1/1/11p

Vet ANHC Spec

ANHC Implementation:Launch ANHCBuilder SelectionDevelop marketing messages and tools

Enforce V.3 everywhere 1/1/11

Develop marketing messages and tools Ongoing Construct, label, promote, eval. HomesFine tune spec and messaging

HOW TO GET MORE INFORMATIONHOW TO GET MORE INFORMATIONHOW TO GET MORE INFORMATIONHOW TO GET MORE INFORMATION

On the Web at:Whttp://www.energystar.gov/homeshttp://www.energystar.gov/homes

Documents

Oh No, , Not Another Change!ncenergystar.org/sites/ncenergystar.org/files... · •Value Proposition Opportunities …in other words,…in other words, protect the ‘Brand’! Goal: