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The Upgrade Project - Hot Water (Choosing a system (Ease of purchase (DIY…
The Upgrade Project - Hot Water
Choosing a system
Constraints
Does the number of people matter?
What type of energy constraints are there?
Cost
What's the product cost?
What is installation cost?
What is cost to run? How does this vary by energy type and region?
Ease of purchase
DIY or professional installation?
Can it be purchased at Home Depot/Lowes
Can it be purchased online?
Can it be purchased through a dealer?
How soon will it arrive?
Benefits
How much energy is used to provide hot water (95F) to farthest away point? How much water is wasted?
What provides leak prevention or detection?
Who cares about benefits over cost? Why?
Timing
What's the easiest & best decision if my water heater is broken now?
Who plans ahead? Why?
Above & beyond the main system
Point of Use
Tank (often used for kitchen hot water)
Tankless (electric heater)
Recirculation pump
On demand
Button
Motion detector
Timer
Always on
Shower thermostatic valve
Pain points
High cost
Energy
Water
Water too cold
Takes too long to heat
Have to waste water to wait for it to heat
Uncomfortable / Cold for handwashing/shower
Wasteful
Feels bad to waste water
Kids learning water conservation in school
Workarounds
Reuse cold water
Collect in buckets
Water flowers
Run showers sequentially
Who can help?
Plumbers
Water tank distributors
Energy / water conservationalists
Public officials
Utilities
Why does anyone care?
Reduce costs
Reduce energy usage (environment)
Kids complain
Want hot water on demand (luxury)
Who are early adopters?
Net Zero home builders/owners
Zero Waste enthusiasts
Energy professionals
What can I measure?
Time to get 95F water to x faucet
Comfortable hand washing temperature
Gallons of water wasted to reach 95F at x faucet
Total daily demands for hot water
Energy / cost of tank, pump and POU systems
Elephant in the room: Is hot water the right focal area?