At a Glance
Heat pump water heaters save energy by using ambient heat to raise the temperature of water, rather than creating heat themselves such as with a conventional electric resistance system. The measure workbook for this measure contains measures for HPWHs installed in garages, basements, inside homes, and a measure identifier for HPWHs in "any location" for savings estimates where programs may not know where the end-user chose to place the technology.
Workbook
Latest Version
Past Versions
version | date | document |
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4.1 |
Apr 19, 2018
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QC review complete.
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4.0 |
Feb 9, 2018
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Workbook version approved at the January 2018 RTF Meeting. Undergoing QC.
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3.4 |
Apr 5, 2017
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QC review complete.
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3.3 |
Nov 17, 2016
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Updated with changes adopted at the November 2016 RTF Meeting. Currently undergoing QC.
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3.2 |
Jun 29, 2016
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Updated to 7th Plan assumptions and format. Currently undergoing QC.
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3.1 |
Sep 11, 2015
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QC Review Complete
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3.0 |
Jul 28, 2015
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Currently undergoing QC
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2.2 |
Mar 19, 2015
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Original savings workbook. QC review complete
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2.0 |
Nov 21, 2014
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Original savings workbook. Currently undergoing QC
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1.3 |
Jan 13, 2014
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Fixed small error in lookup table.
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1.2 |
Mar 13, 2012
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Added tier 2 units for ducted interior installations.
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1.0 |
Oct 21, 2011
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Original savings workbook.
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Decisions
Expand All DecisionsLatest decision
Decision details
Adopt New Measure Applications
Decision DetailsAdopt the new Residential Heat Pump Water Heater UES measure applications as proposed for "Any Vintage/Any Install Location":
- Update the Research Strategy to reflect
- higher estimated cost bin
- making the permit review an alternate candidate approach
- have market data collection to include sectors outside of single family homes
- Update HVAC weight distribution for new construction branch to reflect only homes with electric water heating
- Set the Category to Planning
- Set the Status at Active
- Set the Sunset Date to January 31, 2021
Approve Measure Updates
Decision DetailsAdopt the updates as proposed for the existing residential Heat Pump Water Heater measure applications:
- Change the Category to Proven
- Keep the Status at Active
- Change the Sunset Date to January 31, 2021
Approve new measure application
Decision DetailsAdopt the Tier 4, No Resistance, Split-System Heat Pump Water Heaters for Single Family and Manufactured Homes UES measure specification, savings, cost, life, and Research Strategy as proposed (assume any size tank for hot water use),
- Individual Application Category: Planning
- Individual Application Status: Active
- Individual Application Sunset Date: November 30, 2019
Note: This measure application was adopted with a category and sunset date that differ from other measure applications included in this measure workbook.
Approve measure updates
Decision Details- Update the retrofit measure to reflect the latest market mix;
- Set the sunset date for the HPWH UES measures to January 31, 2018;
- Add to the measure specification for all current HPWH UES measures that the pre-existing water heater type must be electric;
- Adopt the HPWH UES measures with the identifier "any installation location" as proposed, with the same category (Planning), status (Active), and sunset date (January 31, 2018) as the existing HPWH measures;
- Accept the Research Plan for HPWH UES measures and change the category of the measure from Planning to Provisional
- Direct staff to work with the PAC on the fuel switching question;
- Direct staff to work with a subcommittee on developing an upstream planning measure and related research strategy
Sunset date extension
Decision DetailsExtend the sunset date of the Residential Single Family and Manufactured Home HPWH UES measure to December 31, 2016.
Approve measure update
Decision DetailsFor the Residential Single Family and Manufactured Home HPWH UES measure:Approve the measure updates as presented, with small/large tank baseline, combined any tank baseline, updated costs and savings, and a new Tier 3 measure; Adopt the revised research strategy; Keep the Category at Planning; Change the Status to Active; Set the sunset date to 7/31/2016.
Change measure status to under review
Decision DetailsFor the Residential Single Family and Manufactured Home HPWH measure, accept the research strategy for the HVAC interaction parameter; change the Category to 'Planning'; change the Status to 'Under Review'; Set the sunset date to 12/31/2015.
Research Strategy for HVAC interaction is needed
Approve measure update with direction for future analysis
Decision DetailsUpdate the savings, cost, and life for the HPWH UES measures as proposed and set the measure to Provisional category and Under Review status. Direct staff to develop research plan focused on:
- HVAC interaction factor, using a combination of a PNNL lab homes study and an engineering study, as proposed;
- and Determining baseline using data on existing tank size, sales data, and possibly survey data.
Set the sunset date to 4/2015, at which time the RTF will review the research plan.
Approve measure update with direction for future analysis
Decision DetailsThe RTF approved the addition of Tier 2, Ducted Interior Installations to the Heat Pump Water Heaters UES Measure under provisional status with a sunset date of December 31st, 2014.
RTF subcommittee will assist with the development of the HPWH savings research. NEEA will be developing an installation specification to achieve 200 CFM exhaust airflow.
Approve Measure Update with Direction for Subcommittee
Decision DetailsApproved the Heat Pump Water Heater UES Measure, as revised during the meeting, under provisional status to include Tier I systems in all applications and Tier II In buffered unconditioned spaces (interior applications expected at a later date), with the assumed cost of the GE Unit set at $1,200 and overall measure cost adjusted accordingly, and with the study design directed by an RTF sub-committee, and a sunset date of December 31, 2014
Small/rural checklist
Latest Version
Past Versions
version | date | document |
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Jan 30, 2015
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