QC Follow-up for Single Family SEEM Calibration, HVAC UES Measures, and Weatherization Measures Adam Hadley Regional Technical Forum May 12, 2015

QC Follow-up for Single Family SEEM Calibration, HVAC UES Measures, and

Weatherization Measures

Adam HadleyRegional Technical Forum

May 12, 2015

2 Intro• This presentation highlights findings from the RTF’s Quality Control process

– Pre-QC values shown in this presentation are the original RTF-adopted values • Workbooks reviewed include (all Single Family)

– Original RTF adoption date(s): December 2013, May 2014, September 2014• SEEM Calibration

– Reports: Phase I, Phase II– Workbook: SF_FullCalibration_06Aug2014_for_QC.xlsm

– Original RTF adoption date: September 2014• Weatherization

– Measure Workbook: ResSFWx_v3.xlsm– SEEM Runs Workbook: SEEMruns_SingleFamilyExistingHVACandWeatherization_September2014.xlsm

– Original RTF adoption date: December 2014• Heat Pump Conversions

– Measure Workbook: ResSFExistingHVAC_v1.xlsm– SEEM Runs Workbook: SEEMruns_SingleFamilyExistingASHPConversions_December2014.xlsm

• Heat Pump Upgrades, Ductless Heat Pumps on Zonal Houses– Measure Workbook: ResSFExistingHVAC_v1.xlsm– SEEM Runs Workbook: SEEMruns_SingleFamilyExistingHVACandWeatherization_December2014.xlsm

• Heat Pump CC&S– Measure Workbook: ResSFHP_CC&S_Planning.xlsm– SEEM Runs Workbook: SEEMruns_SingleFamilyExistingHVACandWeatherization_December2014.xlsm

• Performance-based Duct Sealing– Measure Workbook: ResSFPerformanceBasedDuctSealing_Provisional.xlsm– SEEM Runs Workbook: SEEMruns_SingleFamilyExistingHVACandWeatherization_December2014.xlsm

http://rtf.nwcouncil.org/measures/support/SEEM/SEEM_Phase_I_Report_MAY2014.docx

http://rtf.nwcouncil.org/measures/support/SEEM/SEEM_Phase_II_Report_09SEP2013.docx

http://rtf.nwcouncil.org/measures/support/SEEM/SEEM_Phase_II_Report_09SEP2013.docx

http://rtf.nwcouncil.org/meetings/2014/09/

http://rtf.nwcouncil.org/measures/res/archive/ResSFWx_v3.xlsm


http://rtf.nwcouncil.org/measures/res/ResSFExistingHVAC_v3.0.xlsm

http://rtf.nwcouncil.org/measures/res/ResSFExistingHVAC_v3.0.xlsm

http://rtf.nwcouncil.org/measures/res/ResHeatingCoolingCommissioningControlsSizingSF_3.0.xlsm

http://rtf.nwcouncil.org/measures/res/ResSFPerformanceBasedDuctSealing_3.0.xlsm

Major Errors Corrected1. SEEM Calibration to RBSA Data (found indirectly through QC)

– For the calibration, RBSA crawlspace houses originally weren’t assigned a perimeter length in SEEM• Fix changed the Phase I adjustment factors (moved them down, see graphs)• [In the separate measure analyses, this smaller adjustment factor results in

lower (< 10%) heating energy use and savings for all measures]

0

0.2

0.4

0.6

0.8

1

1.2

1.4

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45

Adju

stm

ent F

acto

r

Uo (both)

SEEM Phase 1 Calibration Factors

eFAF or Zonal Heating Zone 1



HP or Gas FAF Heating Zone 1



0

0.2

0.4

0.6

0.8

1

1.2

1.4

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45

Adju

stm

ent F

acto

r

Uo (both)

SEEM Phase 1 Calibration Factors







Pre-QC Post-QC

4

Major Errors Corrected

2. Wx & HVAC Measure SEEM Runs– Incorrect calculation of Non Electric Savings

• Revised calculation method for all measures, except ZonalDHP

– Fix significantly increased non-electric savings for weatherization measures (~1.5x to 4x increase)

• ZonalDHP UES Measure required its own calculation method

– This fix increased non-electric heating savings by a factor of 1.6, 1.9, and 4.5, for heating zones 1, 2, and 3, respectivelyPhase II of SEEM Calibration

1 82.7% 15.6%2 85.8% 12.4%3 85.8% 12.4%1 84.7% 13.8%2 86.9% 11.3%3 98.3% 0.0%

Electric Heating Adjustment

Non-Electric Heat Adjustment

eFAF, Zonal, HP, or Gas FAF

DHP

Equipment Heating Zone

5

Major Errors Corrected3. Conversion Measure SEEM Runs

– Uo range re-calculated to include infiltration component (Uo-both)• Previous Uo range: 0.052 to 0.319; • Correct Uo range: 0.066 to 0.485• Result

– Changed the Uo cutoffs (definitions) of “good, fair, and poor” insulation (“heat pump conversion measure identifier calculator” was updated)

– Changed the heat pump size and therefore, measure costs

– Duct R-values set at average RBSA levels to mimic “first in” decision on duct sealing for conversion measures

– Combined results: Electric savings went up by 30%-36%

4. Conversion Measure Cooling Savings– Re-calculated to apply to the insulation level measure identifier (good, fair, poor)

• Previously, savings were calculated as last measure in, without insulation level measure identifier factored in

• Result: Cooling savings substantially higher in “fair” and “poor” cases

5. Wall area previously included window area– This fix increased savings for wall insulation measures by more than 10%

6. Weatherization Measures Cooling Savings– Cell reference to wrong column

• Fix changed cooling savings (no discernable pattern)

6

Major Errors Corrected7. Weatherization Measures for Heat Pumps (not a QC finding)

– Original weatherization analysis used old heat pump control strategy for CC&S (HPcntrl = 100). To be consistent with heat pump measure analysis, now using the revised control strategy (HPcntrl = 103) which includes 80% airflow multiplier for the standard practice heat pump installation (see December 2014 presentation)• Reduced savings for heat pump weatherization measures by more than 10%• Did not change HVAC measure savings, since their original RTF adoption assumed

HPcntrl = 103.

8. Window Measure Life (not a QC finding)– Changed back to 45 years (from 25 years) per RTF decision February 2015

Note: Many minor errors were corrected, too– See QC memo’s for details (ask Jenn)


7

Heat Pump Conversions

8

• All FAF w/CAC conversion measures are still cost-effective

0

2000

4000

6000

8000

10000

12000

HZ 1 HZ 2 HZ 3 HZ 1 HZ 2 HZ 3 HZ 1 HZ 2 HZ 3

Good Insulation Fair Insulation Poor Insulation

Elec

tric

Ene

rgy

Savi

ngs

(kW

h/yr

)

FAF w/CAC --> HP Conversions

Pre-QC UES

Post-QC UES

#3 – Conversion measure savings significantly higher with revised Uo’s

0

2000

4000

6000

8000

10000

12000

CZ1 CZ2 CZ3 CZ1 CZ2 CZ3 CZ1 CZ2 CZ3 CZ1 CZ2 CZ3 CZ1 CZ2 CZ3 CZ1 CZ2 CZ3 CZ1 CZ2 CZ3 CZ1 CZ2 CZ3 CZ1 CZ2 CZ3

HZ 1 HZ 2 HZ3 HZ 1 HZ 2 HZ3 HZ 1 HZ 2 HZ3


Ener

gy S

avin

gs (k

Wh/

yr)

FAF w/o CAC --> HP Conversion

Pre-QC UES

Post-QC UES

The only FAF w/o CAC conversion measure that was previously not cost-effective (HZ3 CZ1 w/ “good insulation”) is now cost-effective.

#4 – cooling savings now grow as insulation gets worse

#3 – Conversion measure savings significantly higher with revised Uo’s

10

$-

$20

$40

$60

$80

$100

$120

$140

$160



Non

-Ele

ctric

Hea

t Sav

ings

(Pha

se II

, ann

ual)

FAF --> HP Conversions

Pre-QC NEB

Post-QC NEB

#2 – Corrected Non-electric heat savings calculation

11

$0

$500

$1,000

$1,500

$2,000

$2,500

$3,000

$3,500

$4,000

$4,500



Mea

sure

Cos

t

FAF --> HP Conversions

Pre-QC Cost

Post-QC Cost

#3 – Uo’s are higher, which increases heat pump size and cost

12

Heat Pump Upgrades

13

• All 9.0 HSPF upgrades are still cost-effective.• All VCHP (variable capacity heat pump) upgrades are still not cost-effective.

0

200

400

600

800

1000

1200

CZ1 CZ2 CZ3 CZ1 CZ2 CZ3 CZ1 CZ2 CZ3

HZ1 HZ2 HZ3 HZ1 HZ2 HZ3

9.0 HSPF VCHP

Elec

tric

Ene

rgy

Savi

ngs

(kW

h/yr

)

Heat Pump Upgrades

Pre-QC UES

Post-QC UES

#1 – New calibration factors

14

Heat Pump CC&Sand

Performance-Based Duct Sealing

15

0

200

400

600

800

1000

1200

1400

1600


Electric Forced Air Heat Pump

CC&S Duct Sealing

Elec

tric

Ene

rgy

Savi

ngs

(kW

h/yr

)

CC&S and Performance-based Duct Sealing

Pre-QC UES

Post-QC UES

$-

$2

$4

$6

$8

$10

$12

$14

$16

$18


Electric Forced Air Heat Pump

CC&S Duct Sealing

Non

-Ele

ctric

Hea

t Sav

ings

(Pha

se II

, ann

ual)

CC&S and Performance-based Duct Sealing

Pre-QC NEB

Post-QC NEB



All measures are still cost-effective.

16

Ductless Heat Pumps

17

• HZ3CZ1 and HZ3CZ2 are now cost-effective• HZ1CZ1remains not cost-effective (now the only measure that is not cost-effective)

$-

$20

$40

$60

$80

$100

$120

$140

$160

HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3

CZ1 CZ2 CZ3

Non

-Ele

ctric

Hea

t Sav

ings

(Pha

se II

, ann

ual)

Ductless HP's (zonal, no screen)

Pre-QC NEB

Post-QC NEB

0

500

1000

1500

2000

2500

3000

HZ1 HZ2 HZ3 HZ1 HZ2 HZ3 HZ1 HZ2 HZ3

CZ1 CZ2 CZ3

Elec

tric

Ene

rgy

Savi

ngs

(kW

h/yr

)

Ductless HP's (zonal, no screen)

Pre-QC UES

Post-QC UES



18

Weatherization

19

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

Attic Attic Attic

Electric FAF Zonal or DHP Heat Pump

Hea

ting

Ener

gy S

avin

gs (k

Wh

per u

nit)

Weatherization - Attic Insulation - Heating Zone 1

Pre-QC UES (heating)

Post-QC UES (heating)


#7 – Heat pump control and airflow assumptions change

20

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

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5.0

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

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R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

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R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

Attic Attic Attic


Hea

ting

Ener

gy S

avin

gs (k

Wh

per u

nit)






21

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

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R19-

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R19-

R49

R30-

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R30-

R49

R38-

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Attic Attic Attic


Hea

ting

Ener

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avin

gs (k

Wh

per u

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22

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

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e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

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e-u3

0u3

5-u3

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-u22

Dou

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cfm

50 R

educ

tion

R0-R

11R0

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R0-R

25R0

-R30

R19-

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Sing

le-u

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e-u3

0u3

5-u3

0Si

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-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

Wall Floor Window . Wall Floor Window . Wall Floor Window .


Hea

ting

Ener

gy S

avin

gs (k

Wh

per u

nit)

Weatherization - Heating Zone 1Pre-QC UES (heating)

Post-QC UES (heating)#1 – New calibration factors

#5 – Wall area calculation fix


* ** * * * * * * * * *

* = Savings for these measures were divided by 10 in order to fit on this graph.

23

0.0

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1.0

1.5

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2.5

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5.0

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

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-u22

Dou

ble-

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cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

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e-u3

0u3

5-u3

0Si

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Dou

ble-

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u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

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Dou

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50 R

educ

tion



Hea

ting

Ener

gy S

avin

gs (k

Wh

per u

nit)





* * * * * * * * * *


* *

24

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

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Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion



Hea

ting

Ener

gy S

avin

gs (k

Wh

per u

nit)





* * * * * * * * * *


* *

25

0.0

0.1

0.2

0.3

0.4

0.5

0.6

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

Attic Attic Attic


Cool

ing

Ener

gy S

avin

gs (k

Whp

er u

nit)


Pre-QC UES (cooling)

Post-QC UES (cooling)

#6 – Wrong column error

26

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R0-R

38R0

-R49

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R38

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R49

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R38

R19-

R49

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R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

Attic Attic Attic


Cool

ing

Ener

gy S

avin

gs (k

Whp

er u

nit)





27

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R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

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R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

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R11-

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R19-

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R19-

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R30-

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R49

R38-

R49

Attic Attic Attic


Cool

ing

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gy S

avin

gs (k

Whp

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3

28

0.0

0.1

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11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

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0u3

5-u3

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tion

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Cool

ing

Ener

gy S

avin

gs (k

Wh

per u

nit)

Weatherization - Heating Zone 1Pre-QC UES (cooling)



* * * * * * * * * *


* *

29

0.0

0.1

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R0-R

11R0

-R19

R0-R

25R0

-R30

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R30

Sing

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R0-R

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25R0

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R30

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u22

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50 R

educ

tion



Cool

ing

Ener

gy S

avin

gs (k

Wh

per u

nit)

Weatherization - Heating Zone 2




* * * * * * * * * *


* *

30

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R0-R

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tion

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R30

Sing

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5-u3

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educ

tion

R0-R

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Cool

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avin

gs (k

Wh

per u

nit)

Weatherization - Heating Zone 3Pre-QC UES (cooling)



* * * * * * * * * *


* *

31

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0.6

0.7

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

Attic Attic Attic


Non

Ele

ctric

Ene

rgy

Savi

ngs

(kW

hper

uni

t)Weatherization - Attic Insulation - Heating Zone 1

Pre-QC NEB Post-QC NEB


32

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

Attic Attic Attic


Non

Ele

ctric

Ene

rgy

Savi

ngs

(kW

hper

uni




33

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

R0-R

38R0

-R49

R11-

R38

R11-

R49

R19-

R38

R19-

R49

R30-

R38

R30-

R49

R38-

R49

Attic Attic Attic


Non

Ele

ctric

Ene

rgy

Savi

ngs

(kW

hper

uni




34

0.0

0.1

0.2

0.3

0.4

0.5

0.6

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion



Non

Ele

ctric

Ene

rgy

Savi

ngs

(kW

h pe

r uni

t)Weatherization - Heating Zone 1

Pre-QC NEB Post-QC NEB#2 – Corrected Non-electric heat savings calculation

* * * * * * * * * *


* *

35

0.0

0.1

0.2

0.3

0.4

0.5

0.6

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion



Non

Ele

ctric

Ene

rgy

Savi

ngs

(kW

h pe

r uni



* * * * * * * * * *


* *

36

0.0

0.1

0.2

0.3

0.4

0.5

0.6

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion

R0-R

11R0

-R19

R0-R

25R0

-R30

R19-

R30

Sing

le-u

30D

oubl

e-u3

0u3

5-u3

0Si

ngle

-u22

Dou

ble-

u22

u35-

u22

cfm

50 R

educ

tion



Non

Ele

ctric

Ene

rgy

Savi

ngs

(kW

h pe

r uni



* * * * * * * * * *


* *

37

#8 – Window Measure Life

38


39



40

Proposed Motion

None of the intentions behind the original RTF motions were changed, so no decision is needed to make these corrections.

Two more things to consider: Item 1Heat Pump Sizing and Controls/Airflow

1. Conversion Measures: Heat Pump Sizing– Using the average ratio of 1.2 (Desired capacity/Installed Capacity) found in the

2005 NEEA Heat Pump study gives the following sizes for the three conversion measure identifiers (vary by heating zone):• Good Insulation: 2.7 to 3.2 tons• Fair Insulation: 5.2 to 5.6 tons• Poor Insulation: 7.2 to 7.8 tons

– These sizes are unrealistically high in the Fair and Poor categories. This causes the model to estimate high savings.

– CAT Proposal:• Revise savings by capping the heat pump size to a realistic size in the model (5 tons)• Change the Conversions measure category from Proven to Planning until we know more

about heat pump sizing (and controls and airflow) practices. Use CC&S research strategy (slide 19) for this measure.

http://rtf.nwcouncil.org/measures/res/Research%20Plans_March%202015_New%20Category_DHPwFAF_CCandS_rev4.pptx

42

Proposed savings with a 5-ton Maximum size limit in the savings model

0

2000

4000

6000

8000

10000

12000



Elec

tric

Ene

rgy

Savi

ngs

(kW

h/yr

)FAF w/CAC --> HP Conversions

Pre-QC UES

Post-QC UES

Proposed UES(5-ton MaxSize)

43 Two more things to consider: Item 2Controls/Airflow

1. Weatherization measures for heat pumps: CC&S– Changing the heat pump control and airflow settings in

the SEEM model changed savings significantly. (Item 7 above)

– These inputs are estimates that will be trued up when we know more about heat pump control and airflow practices.

– CAT recommendation:• Change the weatherization (for houses with heat pumps)

measure category from Proven to Planning until we know more about heat pump control and airflow practices. Use CC&S research strategy (slide 19) for this measure.

http://rtf.nwcouncil.org/measures/res/Research%20Plans_March%202015_New%20Category_DHPwFAF_CCandS_rev4.pptx

44

Proposed Motion• “I ______ move, for the Air Source Heat Pump Conversions UES measures,

the RTF – Adopt proposed revised savings

• (note that the SEEM runs, measure identifier calculator, and measure workbook still need to be changed to reflect these savings and costs )

– Adopt the Research Strategy that was previously adopted for CC&S UES measure, – Change the category from ‘Proven’ to ‘Planning’,– Keep status as ‘Active’– Keep the sunset date at December 2019.”

• “I ______ move, for the Weatherization (for houses with heat pumps) UES measures, the RTF– Adopt the Research Strategy that was previously adopted for CC&S UES measure,– Change the category from ‘Proven’ to ‘Planning’,– Keep the status as ‘Active’,– Keep the sunset date at September 2019.”

Documents

QC Follow-up for Single Family SEEM Calibration, HVAC UES Measures, and Weatherization Measures Adam Hadley Regional Technical Forum May 12, 2015