Ductless Heat Pumps for Multifamily

At a Glance

Category

planning

Status

active

Fuel type

electric

Sector

residential

Applications

HVAC

Sunset date

Sep 30, 2028

This measure is the installation of an inverter driven ductless heat pump (DHP) in the main living area of a low- or mid-rise (5 or more units and 6 or less stories) multifamily unit with existing, permanently installed in-unit electric resistance heat. The data to inform energy savings estimates are relatively sparse and provide little insight into the savings across heating zones. Due to high uncertainty, this measure is set to planning with an associated research strategy. The research could be completed through a billing analysis and site visit/survey or other methods that achieve the following objectives:

Estimate unit-level savings across all three heating zones for DHPs installed in low and mid-rise multifamily buildings.
Estimate savings separately for varying identifiers (as outlined in the strategy) such as single-head vs multi-head systems, low-rise vs mid-rise, renter vs owner, etc.

Workbook

Latest Version

Residential Multifamily DHP v3.1

Residential Multifamily DHP v3.1

Approved by the RTF in October 2024. QA Complete

Date

Dec 17, 2024

Version number

3.1

Past Versions

version	date	document
3.0	Oct 24, 2024	Residential Multifamily DHP v3.0 Approved at Oct 2024 RTF meeting. Undergoing QA.
2.1	Aug 14, 2023	Residential Multifamily DHP v2.1 Based on an RTF decision at the July 2023 meeting, this version includes minimum HSPF2 levels to be met by qualifying units that do not have a HSPF rating. Updated cost effectiveness using procost version 5.08.
2.0	Apr 18, 2022	Residential Multifamily DHP v2.0 Updated with 2021 Plan cost effectiveness methodology
1.1	Nov 28, 2018	Residential Multifamily DHP v1.1 Measure approved at the September 2018 meeting. Workbook has been updated post QA/QC review.
1.0	Sep 26, 2018	ResMFExistingDHP_v1_0.xlsm Measure workbook approved at the September 2018 RTF Meeting. Pre-QC.

Decisions

Expand All Decisions

Latest decision

Decision details

Decided

October 16, 2024

Approve Measure Updates

Decision Details

Approve the Ductless Heat Pumps for Multifamily UES as presented, and:
-Keep the Category at Planning
-Keep the Status at Active
-Set the sunset date to September 30, 2028.

Decided

September 17, 2024

Extend Measure Sunset Date

Decision Details

Extend the sunset date for the DHP for Multifamily UES to October 31, 2024

Decided

July 18, 2023

Adopt measure changes

Decision Details

Adopt the minimum HSPF2, SEER2,and EER2 specifications as presented for the following UES measures as an interim solution until these measures are next updated and a longer-term approach agreed upon:
DHPs for Zonal Heat SF
DHPs for Zonal Heat MH
DHPs for Multifamily
DHPs for Forced Air Furnace SF and MH
ASHPs Upgrades and Conversion MH
ASHPs Upgrades and Conversion SF
High Efficiency Central AC

Decided

September 21, 2021

Approved Measure Updates

Decision Details

Adopt updates to the DHP for MF homes as presented, including:

Set the sunset date to September 30, 2024

Decided

September 18, 2018

Adopt New Measure

Decision Details

Adopt the Ductless Heat Pump for Low- and Mid-Rise Multifamily UES measure as proposed;

Set the Category to Planning;
Set the Status to Active; and
Set the Sunset Date at September 30, 2021

Decided

July 21, 2015

Allocate resources to measure development

Decision Details

Allocate staff resources towards developing a Residential Ductless Heat Pump for Multifamily UES Measure.