1. Addressing HPWH Market Barriers: Expanded Perspective
Ben Clarin
Sr. Project Manager
HPWH Market Transformation Symposium
October 22, 2018

2. HPWH Market Needs – Compiled challenges
Manufacturers struggling for management approval due to anemic sales
Good products available 10 years on, but only 1% market penetration
Common challenges for all markets:
Size of HPWH to replace existing 30, 40 gal units
Deploying Thermal Storage capability
Multifamily systems
Lack of plumber/installer training and awareness
Not on the shelf at Lowe’s or Home Depot
Electric Water Heating Markets:
Replacement of electric water heaters – cost and availability of “on the truck”; cost to drive availability
First Hour Draw
RIM test for incentives
Measurable and quantifiable DR benefits
Emergency replacement “offer”
Gas Water Heating Markets:
Electricity Infrastructure availability (not enough distribution capacity, 240V availability, panel upgrade costs)
Multifamily boiler replacements
Natural refrigerants
DR is secondary – need to get em’ in first

3. Learnings from HPWH deployment
Grid Integration of Zero Net Energy Communities
Open Demand Side Resource Integration Platform
IDSM in low income communities

4. HPWH learnings – community scale
System
Purchased Cost
Net Installed Cost
Heat Pump Water Heater
$1000
- $200 reduction (eliminate gas venting and piping, run 240V)
Gas Tankless
$950
Heat Pump water heaters cost neutral to tankless gas water heaters and lower installed cost in new construction
kWh impacts of backup electric element vary with manufacturer control algorithms
Peak operation based on plumber settings

5. Addressing Retrofit Challenges – The Cost Stack
Electric distribution upgrades
Additional Construction Costs
Panel Capacity
Equipment Cost
10000
4500
2000
400

6. Multifamily HPWH Focus
How do you replace a central boiler system with HPWH?
Largest available unitary HPWH in the market is 120 Gal
Options and Opportunities
Testing “ganged” HPWH
BPA is testing Colmac commercial systems
New construction using HPWH as backup option for gas boiler
Using CO2 systems with higher temperature storage
Replacing individual with community systems?
One-one replacement form factor issue