Skip Links
Skip to main content
Skip to secondary navigation
Skip to primary navigation
EECA
Personal
Business
EECA
Energywise - the power to choose
Menu
Home
At home
expand/collapse
In this section
3 Essentials for a healthy home
Simple ways to lower energy bills
Renovating
Building
Buying and renting
Appliances
Dampness
Draught stopping
Heating & cooling
Insulation
Lighting
Ventilation
Hot water
Windows
Generating energy
3 Essentials for a healthy home
Simple ways to lower energy bills
Renovating
Building
Buying and renting
expand/collapse
Buying & renting tips
Landlords
Tenants
Appliances
expand/collapse
Clothes dryers
Computers & office equipment
Dishwashers
Fridges and freezers
Televisions
Washing machines
Dampness
Draught stopping
Heating & cooling
expand/collapse
Heating your home
Types of heater
expand/collapse
Heat pumps
Wood burners
Wood pellet burners
Gas heating
Electric heating
Cooling your home
Thermal mass
Insulation
expand/collapse
Installing insulation
expand/collapse
New Zealand Standard for installing insulation
Installation funding
Ceiling insulation
expand/collapse
Checking ceiling insulation
Choosing ceiling insulation
Installing ceiling insulation
Downlights and insulation performance
Insulating skillion or flat roofs
Underfloor insulation
expand/collapse
Checking underfloor insulation
Choosing underfloor insulation
Installing underfloor insulation
Wall insulation
expand/collapse
Types of wall insulation
Installing wall insulation
Lighting
expand/collapse
Choosing the right energy efficient bulb
expand/collapse
LEDs
Compact fluorescent lamps (CFLs)
New generation halogens
Energy efficient lighting tool
Lighting design
Choosing energy efficient recessed downlights
Ventilation
expand/collapse
Ventilation checklist
Home ventilation systems
expand/collapse
Balanced pressure ventilation systems
Positive pressure ventilation systems
Hot water
expand/collapse
Choosing a water heating system
Types of water heating systems
expand/collapse
Heat pump water heaters
Gas hot water cylinders
Electric hot water cylinders
Solar water heating
Wetbacks
Gas continuous flow
Water heating systems tool
Cool ways to save on hot water over summer
Windows
expand/collapse
Double glazing
Retrofit alternatives to double glazing
DIY window insulation kits
Low-E window film
Curtains and blinds
Generating energy
expand/collapse
Solar electricity systems
expand/collapse
Getting the best value from solar
Micro-hydro systems
Small wind turbines
Going off-grid
On the road
expand/collapse
In this section
Choosing the right vehicle
Driving efficiently
Tyre pressure
Electric vehicles
Hybrid vehicles
Biofuels
Vehicle fuel economy labels
Choosing the right vehicle
expand/collapse
Fuel economy partners
Driving efficiently
Tyre pressure
Electric vehicles
expand/collapse
Electric vehicle options in New Zealand
Electric vehicle benefits and considerations
expand/collapse
Electric vehicle running costs
Electric vehicle battery life
Electric vehicle charging
Sign up for updates
Electric vehicle news
Electric vehicles website
Electric vehicle projects
Hybrid vehicles
Biofuels
Vehicle fuel economy labels
Home office
expand/collapse
In this section
No-cost energy saving
Low-cost energy saving
No-cost energy saving
Low-cost energy saving
Energy labels
expand/collapse
In this section
Energy Rating Label
Vehicle fuel economy labels
Energy Rating Label
expand/collapse
Running costs calculator
Vehicle fuel economy labels
expand/collapse
Fuel economy labels tool
Funding & support
expand/collapse
In this section
Funding for insulation
Insulation installers
Payment options for insulation & heating
Funding for insulation
Insulation installers
Payment options for insulation & heating
expand/collapse
List of accepted insulation products
List of accepted heating products
Quality manual and guidelines
About EECA
News & events
Resources & tools
Contact us
Facebook
Share
facebook
twitter
linkedin
google+
email
About EECA
News & events
Resources & tools
Contact us
Search
What are you looking for?
Search
You are here:
At home
>
Hot water
> Choosing a water heating system
Also in this section
3 Essentials for a healthy home
Simple ways to lower energy bills
Renovating
Building
Buying and renting
Appliances
Dampness
Draught stopping
Heating & cooling
Insulation
Lighting
Ventilation
Hot water
Choosing a water heating system
Types of water heating systems
Water heating systems tool
Cool ways to save on hot water over summer
Windows
Generating energy
Choosing a water heating system
Share with your friends
To:
(required)
From:
(required)
Choosing a water heating system
Share
facebook
twitter
linkedin
google+
email
Last reviewed:
03 April 2017
Has this been helpful?
Send feedback
Access Keys
Accessibility
Home
Site map
Search
Contact
Skip to main content
newzealand.govt.nz
Close