AN UPDATE FROM THE FIELD - GASNETWORKS ON-DEMAND TANKLESS WATER HEATING PROGRAM MATT DUGAN KEYSPAN ENERGY DELIVERY 2007 ACEEE MT SYMPOSIUM
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GasNetworks On-Demand
Tankless Water Heating Program
An Update From the Field
Matt Dugan
KeySpan Energy Delivery
2007 ACEEE MT Symposium
KeySpan Energy Delivery
• KeySpan is the largest gas utility in the
Northeast
• 2.6 million customers in Massachusetts,
New Hampshire and New York
• Serving the greater Boston metro area,
Cape Cod, Brooklyn, Queens, Staten
Island, Long Island and Southern New
Hampshire
• KeySpan has offered energy efficiency
programs since 1997 in the Commercial
and Industrial and Residential Markets
4
KeySpan Residential
Programs
• Residential Conservation Services
• Home Analyzer Internet Audit Service
• ENERGY STAR® Windows
• ENERGY STAR® Programmable Thermostats
• ENERGY STAR® Homes
• High-Efficiency Heating Equipment
• High-Efficiency Indirect Water Heating Equipment
• Weatherization Program
• Low-Income Weatherization Program
• On-Demand, Tankless Water Heating Program
5GasNetworks
• Collaborative of natural gas utilities in New
England that promotes energy efficiency to
residential and commercial & industrial
customers
• Participating utilities include gas utilities in
Massachusetts, New Hampshire, Maine and www.gasnetworks.com
shortly Rhode Island
6On Demand, Tankless Water
Heating Program
• Established March, 2005
•$300 REBATE
•0.82 EF or greater with electronic ignition
7On Demand, Tankless Water
Heater Technology
•On demand heaters use a burner and heat
exchanger to heat water as it flows through
the coils
•Water flow is dependent on input water
temp; when the delta is higher, the flow will
be restricted to compensate in temp.
8Considerations with
On Demand Technology
• Performance is dependent on climate;
water temp
• The Northeast requires at least 75ºF
degree rise in water temp. during winter
• Modulating valves enhance efficiency
•Most models need to be direct vented and
hard wired
• Gas service line must be evaluated
*average shower head requires 2.5 gpm
9On Demand, Tankless Water
Heating Market
• On demand models account for less than 2% of the market
share in water heating equipment
• Customer driven market
• Significantly more expensive than tank type models
• Lifetime twice that of tank type models
•Range in efficiencies from 0.69EF (DIY stores) to 0.85EF
•Federal Energy Tax credits of $300 for EF 0.80 or greater
10Benefits
•Energy Savings
•Space Saving – tank type models requires 16 ft2.
•Easier install near point of use
•Displace oversized heaters
•Modulating valves – less energy with less demand
11Potential Drawbacks
• Gas Pressure Problems
• Increased water usage
• Increased energy usage
• Greater point of use warm-up time
(when installed in basement or utility room)
12Training Program
Trade ally training program includes manufacturers:
-Bosch
-Noritz
-Rinnai
*Rinnai requires certification training to purchase through
their distributor system
Training participants include:
- KeySpan Value Plus Installer network
- Gas Code Inspectors
- Heating contractors and plumbers
- In home energy auditors
- KeySpan residential and commercial sales teams
13Training Program
Training focus:
• Proper venting techniques
• Gas Piping and sizing
• Application and Use
• Minimum Flow rates
____________________
• KeySpan and GasNetworks have sponsored more than 12 product
training sessions, more than 200 contractors trained
• GasNetworks hosted the sixth annual fall conference with more
then 300 attendees, Rinnai conducted the certification training
14Results
• More than 200 trade allies trained since March 2005
•GasNetworks participation totals over 1000 as of Mar 2007
•25% of GasNetworks water heating rebates are for on
demand models
• More contractor trainings planned
•Attitudes Survey Completed
15Attitude Survey
• Conducted by Nexus Market Research
– Completed October 2006
• Telephone survey of 101 program participants to
access consumer reactions to tankless water heaters
• Topics Covered: Sources of Awareness, Purchasing
Motivations, Satisfaction with Performance, Perceived
Energy and Water Savings, Location of New Water
Heater, Etc.
• Survey will be made available as a part of Conference
Materials
16Attitude Survey-Top Line Results
Type of Residence
Survey Massachusetts,
Respondents per census 2000
Type of home (Frequency) (percentage)
Single family 87 52%
Two- to four-family building 9 23%
Town or row house 3 4%
Other 1 n/a
Refused 1 n/a
Total 101 100%
17Attitude Survey-Top Line Results
Massachusetts, per
Survey Respondents census 2000
Size of home (square feet) (Frequency) (percentage)
Size of Home (in square feet)
Less than 1,000 4 16%
1000 - 1,499 13 15%
1,500 - 1,999 25 38%
2/3 of homes under 2,000 - 2,499 24 22%
2500 square feet 2,500 - 2,999 12 9%
3,000 - 3,999 9 n/a
4,000 - 4,999 7 n/a
5,000 - 7,999 2 n/a
8,000 - 9,999 1 n/a
10,000 or more 2 n/a
Don't know/Refused 2 n/a
Total Respondents 101 100%
18Attitude Survey-Top Line Results
Household Size and Characteristics
Size of Household,
Massachusetts, per
Number of Members of Number of census 2000
49% of households contain the Household Households (percentage)
2 or fewer individuals 1 11 28%
2 38 32%
81% of households contain 3 12 16%
4 or fewer individuals 20 14%
4
19Attitude Survey-Top Line Results
Information Source All sources
First Source (multiple
response)
Friend/family/neighbor/acquaintance/co-worker 20 25
The gas company website; the tankless water heater program website 14 25
Where Respondents Heard About Contractor or plumber (personal contact) 13 13
Tankless Water Heaters Radio or television program 9 16
Advertisement by contractor or plumber 7 8
Bill stuffer, information in the mail from the utility/gas company 5 8
Magazine article 5 7
Advertisement by the gas company 5 9
Advertisement by manufacturer 4 6
Living or traveling in Europe; foreign country 4 6
Occupation; work(ed) with appliances 3 3
Newspaper article 2 3
Internet 2 3
Utility representative 1 1
Visiting another state 1 1
Don't know 6 18
Total Respondents 101 101
20Attitude Survey-Top Line Results
Reasons Frequency
Saving energy/gas; using less energy/gas 55
Reasons for Purchasing Tankless Water Saving money; lower gas bills 21
Heater (Multiple Response) Never running out of hot water; hot water
whenever needed 13
To save space 13
Tank will not rust/corrode and leak; no
flooding 8
Instant/instantaneous hot water 6
Less maintenance; water heater will not break
down 4
Getting the latest technology 3
Other 4
Don’t know 2
Total Respondents 101
21Attitude Survey-Top Line Results
Level of Satisfaction
Neutral
Characteristic Extremel
Dissatisfie or Don’t
y satisfied
d (0 to 4) satisfied Know
(9 to 10)
(5 to 8)
Satisfaction with Tankless
Water Heater Overall performance of tankless
3 30 67 1
(n=101) water heater
Length of time you can use hot water
2 7 86 6
without running out
The amount of hot water that comes
2 18 77 4
out of the faucet
The ability to use hot water for more
5 32 60 4
than one purpose
The reliability of the tankless water
3 15 51 32
heater
Savings on natural gas bill 0 32 29 40
The amount of time it takes for hot
17 62 21 1
water to come out of the faucet
The savings on water bills 0 36 26 39
22Attitude Survey-Top Line Results
Maintenance or Repairs Performed on the Tankless Water Heater
Frequency
Yes, have performed maintenance or repairs 6
No 95
Total Respondents 101
Awareness of Regular or Scheduled Maintenance or Repairs for Tankless Water Heater
Aware of suggested maintenance or
Frequency
repair
Yes 20
No 80
Don’t know
1
Total Respondents 101
23Attitude Survey-Top Line Results
Household Use of Hot Water after Installing Tankless Water Heater
Hot water use with tankless water heater Frequency
Use more water than before 12
Use less water than before 12
Use about the same amount as before 76
Don’t know 1
Total Respondents 101
Did Tankless Water Heater Replace a Storage Tank Water Heater?
Frequency
Yes, replaced a storage tank water heater 91
No, did not replace a storage tank water
heater 10
Total Respondents 101
24Conclusions
• Consumers are replacing tank type water
heaters with tankless models
• Further evaluate overall gas and water
savings of program participants
• Continue to focus on Contractor Training
• Continue to focus on Consumer Awareness
of product and proper installation and
maintenance practices
25GasNetworks On-Demand
Tankless Water Heating Program
An Update From the Field
Matt Dugan
KeySpan Energy Delivery
2007 ACEEE MT SymposiumYou can also read
