Testing Protocols & Certification Standards: RESNET & PHIUS+

Testing Protocols &

Certification Standards:

RESNET & PHIUS+

7777thththth Annual North American Passive House ConferenceAnnual North American Passive House ConferenceAnnual North American Passive House ConferenceAnnual North American Passive House ConferenceSeptember 27September 27September 27September 27----30, 2012 Denver CO30, 2012 Denver CO30, 2012 Denver CO30, 2012 Denver CO

RESNET & PHIUS+

Kristof Irwin, Principal

Positive Energy

Austin, Texas

Positive Energy•Integrative Building Science

•Design/Construction Review

•HVAC Design

•IAQ Consulting & Testing

•Field Monitoring•Field Monitoring

•Electricity Use

•Psychrometrics

•Research Studies

•Education/Training

Session Learning Objectives:

• Learning Objectives

– See larger motion in industry

7777thththth Annual North American Passive House ConferenceAnnual North American Passive House ConferenceAnnual North American Passive House ConferenceAnnual North American Passive House ConferenceSeptember 27September 27September 27September 27----30, 2012 Denver CO30, 2012 Denver CO30, 2012 Denver CO30, 2012 Denver CO

– Comparison of Testing Procedures

– Comparison of Standards

– HERS Rating for PH project in CZ-2A

– Understanding of new PHIUS+ Standards

In this Talk

• RESNET Standards

• Energy Star Version 3 Requirements

• DoE Challenge Home Requirements

• PHIUS+ Requirements• PHIUS+ Requirements

Not In this Talk

• RESNET Standards

• Energy Star Version 3 Requirements

Challenge Home Requirements

Detailed Treatment of:

• Challenge Home Requirements

• PHIUS+ Requirements

Home Building Industry

About making money.

Industry driver over past few Industry driver over past few

decades is efficient process.

Industry driver now shifting

to efficient homes.

Industry Goal

High Performance Homes

• Healthy

• Safe• Safe

• Comfortable

• Durable

• Energy Efficient

High Performance Homes

How?

• Inspect – know what to look for and why

• Test – sympathetic • Test – sympathetic understanding of test equipment & process

• Certify (QA/QC)

• Verification & Certification(V&C)

Simple

• Inspect

• Test

Inspect & Verify• Vented/Unvented

• U-factor

• R-value

• Insulation Grade

• SHGC

• VT

• SEER

• EER

• HSPF

• AFUE

• COP• VT

• CFA

• Perimeter

• Orientation

• Shading

• Radiant Barrier

• CFM/Watt

• kWh/yr

• EF

• Perms

• Emissivity

Performance Testing

• ACH50

• ACHn

• CFM25-Total

• CFM20-Exterior

• TESP/ESP

• R2R Delta-P

• H2E Delta-P

• IAQ

• CAZ• TESP/ESP

• T&B

• Delta-Q

• Delta-T

• CAZ

• Worst Case

• Gas Leakage

• Exhaust CFM

• Ventilation CFM

Simplicity?

"Everything should be made as simple as

possible, but not simpler.“

- Albert Einstein

The Other Side of Simplicity

"I would not give a fig for the simplicity on this side of

complexity, but I would give my life for the simplicity on

the other side of complexity.“

- Oliver Wendell Holmes

(often attributed to Einstein)

How do these relate?

Performance Testing

Metrics for Buildings

Start: RESNET Standards (Ch 8 + Appendix A)

+ Energy Model/Reference Home = HERS Index

+ TERC, HVAC Rater/Contractor, IAQ, WM = ESV3

+ Ducts in conditioned, IECC2012 Envelope, + Ducts in conditioned, IECC2012 Envelope,

Water Htg Eff, ES L&A, IAQ, WM, RERH

= Challenge Home

+ PHIUS Checklist = PHIUS Certified Home

RESNET Standards

• Maintains Technical Standards and provides oversight for the Home Energy Ratings System (HERS)(HERS)

• Provides Accreditation Standards, Ethical Standards, and Protocols

• ANSI SDO

• 501 [c] [3] Not-for-Profit Educational Organization

RESNET Standards

100 National Standard

200 Training & Certification

300 Rating Tech Standards

400 Builder Option Packages400 Builder Option Packages

500 Revision of Standards

600 Sampled Ratings

700 Home Energy Audit Standards

800 Performance Testing & Work Scope

900 Quality Assurance

Appendix A – On-Site Inspection Procedures

Performance Testing

& On-Site Verification

• Chapter 8 “RESNET Standard for Performance

Testing and Work Scope: Enclosure and Air

Distribution Leakage Testing”Distribution Leakage Testing”

• Appendix A “On-Site Inspection Procedures for

Minimum Rated Features”

• New Appendix A just completed initial public

comment period as part of ANSI process

RESNET Standards –

Chapter 8

• 801 Background

• 802 Building Enclosure Air Tightness Testing

• 803 Duct Leakage Testing

• 804 Ventilation Air Flow Testing• 804 Ventilation Air Flow Testing

• 805 Work Scope and Combustion Safety

• 806 Gas Leakage Testing

• 807 Worst Case Depressurization Testing

• 808 Carbon Monoxide Testing

• 809 Work Scope for Contractors

Chapter 8

801 Envelope Leakage Testing

• “Procedures for Building Enclosure Air

Tightness Testing”

802.1.1 Single Point Test

802.1.2 Multi-Point Test*802.1.2 Multi-Point Test*

802.1.3 Repeated Single Point Test

*Per ASTM E779-10 e.g. TecTite

Software (PHIUS+)

Chapter 8 Air Distribution

System Leakage Testing

• “On-Site Inspection Procedures for Duct

Leakage Testing”• 803.3 Prepare bldg

• 803.4 Install equip• 803.4 Install equip

• 803.5 Total leakage

• 803. Exterior Leakage

Leakage Metrics (%)

• Based on Airflow

• Based on CFA

Chapter 8

804 Ventilation Air Flow Testing

• 804.1 Air Flows into Grilles

– 804.1.1 Powered Flow Hood

– 804.1.2 Air Flow Resistance

Chapter 8

804 Ventilation Air Flow Testing

• 804.2 Air Flows Out of Grilles

– 804.2.1 Powered Flow Hood

– 804.2.2 Bag Inflation

Chapter 8

804 Ventilation Air Flow Testing

804.X Air Flows Within Ducts

Performance Testing

Metrics for Buildings

HERS Index

HERS Index

HERS Index = PEF xTotal Energy Use: Rated Home

Total Energy Use: Reference HomeTotal Energy Use: Reference Home

Total Energy Used – On-Site Power Produced

Total Energy Used

PEF (Purchased Energy Fraction) =

HERS Rating of PH Project • Done as part of GEM Program

• Goal is create transparent, market-accepted vehicle to create

financial incentives for home performance upgrades.

• Working to use the HERS index to create standardized

premium that will communicate to:

– Buyers/Owners– Buyers/Owners

– Lenders

– Appraisers

HERS INDEX, CREATES MARKET STANDARDS

E-4

Compliments, RESNET, RMI, EQS, Inc

All Rights Reserved

HERS INDEX +

Appraisal Rating

E 1-5=Level of Building

Performance Efficiency E-1

E-2

E-3

Comp #1 Comp #2 Comp #3E

E R

ati

ng

Quantifies Energy Reductions

• .CRITERIA:

• Obtain utility cost baselines from utility-10-25

mile radius

• Use same square footage, similar age, quality

• Aggregate data for 4 or more houses closest to

subject property ____________________________

Utility

Regional/Neighborhood

Baseline Energy Usage

• Compare predicted energy costs-HERS Audit

• Calculate PV & DER averages for IPVs

Upgrade capital outlay = $44,500

$ 2400 Yr. Energy Savings = $32,954 IPV

$ Loan Interest Savings+ $21,546

Total Equity/Savings = $54,500

Pay off 9 years @ 20 Yr. Loan

$270 PMT

Predicted Energy Reduction

HERS Audit

HERS Index

LEED Certified, etc.

© Copyright 2012, EQS Inc, All Rights Reserved

Case Study: Austin, Texas

North

Wall Construction

H

A

R

D

I

P

¾X

P

S

¾

P

I

N

E

Cellulose

In a 2x4

Cavity

O

S

B

V

A

3” Space

Filled w

fiberglass

blown –in

insulation

Fiberglass in a

2x4 cavity

Mini shelves

5

/

8

”

G

Y

L

A

N

K

EMini Shelves

Made from

Landscape

fabric used

to avoid

settling every

36”

P

O

R

B

A

R

R

All Elec.

And

Plumbing

ran

through

this gap

Mini-

shelves

P

B

O

A

R

D

Windows• Inline fiberglass windows.

• Looked for the cheapest possible windows that will

meet the air infiltration standards and go from there.

• Inline 325 series double paned with low E 366 glass

was the cheapest (SHGC .19, glazing u .28, frame u was the cheapest (SHGC .19, glazing u .28, frame u

.26).

• SHGC was more important

than the frames or glazing.

• Going triple pane brought

Loads down by .04 of a kBtu

Specs

•Uninsulated Slab

•R-35 Walls

•R-50 Roof

•Fiberglass Windows 0.28/0.19

•9kBtuh Fujitsu Mini-Split (27.2 SEER)•9kBtuh Fujitsu Mini-Split (27.2 SEER)

•Zehnder ComfoUnit 350 (ERV)

•Rheem 2EF HP Water Heater

•CFM50 = 120

•ACH50 = 0.41

REM/Rate Energy Model

HERS Index = 40 (No PV)

HERS Index = -1 (w/ 6kW PV)

Heating 60Lights & App 560

Heating 60

Cooling 103

Water Heating 121

Lights & App 560

Service Charge 72

Energy Bills

• PHPP predicts monthly use of 1266 kWh.

• Actual:

– June 2011 975kWh

– July 2011 1055kWh

– August 2011 1250kWh– August 2011 1250kWh

Performance Testing

Metrics for Buildings

ESV3

ENERGY STAR Qualified Homes, Version 3 (Rev. 06)

• Prescriptive Path

• Performance Path

• ESV3 Reference Home• ESV3 Reference Home

• Thermal Enclosure System Rater Checklist

• HVAC System Quality Installation Rater Checklist

• HVAC System Quality Installation Contractor Checklist

• Water Management System Builder Checklist

• Indoor air PLUS Verification Checklist

TERC

HVAC Contractor

HVAC Rater

Water Management

Indoor airPLUS (EPA)

DoE Challenge Home

“The DOE Challenge Home — an ambitious

successor to the Builders Challenge program

— represents a whole new level of home — represents a whole new level of home

performance, with rigorous requirements

that ensure outstanding levels of energy

savings, comfort, health, and durability.”

DoE Challenge Home

•Exclusive

•Tech-Savvy

•Luxurious

•Quality Built•Tech-Savvy

•Advanced

•Ultra-Efficient

•Better Air Quality

•Quality Built

•Water Efficiency

•Enduring Value

Challenge Home – Exhibit 1

Challenge Home – Exhibit 2

Envelope Leakage

• IECC2009: 402.4.2 Air Sealing and Insulation

– 402.4.2.1 ACH50 ≤ 7

– 402.4.2.2 Visual Inspection Option

• ESV3: Exhibit 1 Envelope, Windows & Doors

– ACH50 ≤ 6 (CZ-1,2) ; ≤ 5 (CZ-3,4)

– ACH50 ≤ 4 (CZ-5,6,7) ; ≤ 3 (CZ-8)

• IECC2012: R404.4.2 Air Leakage (Mandatory)

– R402.4.1.1 ACH50 ≤ 5 (CZ1-2); ≤ 3 (CZ 3-8)

• PHIUS

– ACH50 ≤ 0.6 + TecTite Software required

Air Distribution Leakage

• IECC2009: 403.2.2 Sealing (Mandatory)– Rough-In Test: ≤ 6 CFM25T/100sf CFA (≤ 4 no AH)

– Post Construction Test: ≤ 8 CFM25T/100sf CFA

• IECC2012: R403.2.2 Sealing (Mandatory)– Rough-In Test: ≤ 4 CFM25T/100sf CFA (≤ 3 no AH)– Rough-In Test: ≤ 4 CFM25T/100sf CFA (≤ 3 no AH)

– Post Construction Test: ≤ 4 CFM25T/100sf CFA

• ESV3: Exhibit 1 Thermostats & Ductwork– Post Construction Test: ≤ 4 CFM25E/100sf CFA

– Post Construction Test: ≤ 8 CFM25T/100sf CFA

• Challenge Home– ESV3 + All ducts within thermal and air barrier boundary

Air Flow Testing

• ESV3: HVAC Rater/Contractor Checklists (Rev 06)• Whole House per ASHRAE 62.2-2010

• Kitchen Exhaust: ≥ 5ACH cont.; ≥ 100CFM intermittent

• Baths: ≥ 20CFM cont.; ≥ 50CFM intermittent•• System air flow measurement

• Air balance: greater of +/- 20% Room flow or 25CFM

• Pressure Relief to Aux Rooms ≤ 3Pa

• ERV/HRV Flow measurement*

PHIUS+

Additional testing and

verification requirements

•Blower Door

•Both +/- 50Pa•Both +/- 50Pa

•TecTite

•PHIUS+ ACH50

•Insulation

•Brine Loop/Earth Tube

•Ventilation T&B

•Ductwork T&B

•Dehumidification

Summary

• Home performance standards have common core

• Underlying testing procedures standardizing

• Allows for custom certifications by selectively

combining and tweaking existing protocols

• CZ-2A measured performance case study aligns w/

PHPP

• Overall lack of measured performance, currently

V&C based only thru construction

Your local building science shop.

Info@positiveEnergy.pro

(512) 462-1000

Introduction to Positive Energy:

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