B1.2 Hot water

Survey Data

Percentage of housesTotal houses surveyedChange since 2006
Power type
Electric powered hot water system46%7703-5%
Solar powered hot water system47%77037%
Gas powered hot water system5%7703-1%
Heat pump hot water system1%77031%
Solid fuel hot water system0%77030
No hot water system2%71430
System component performance
Hot water pressure release/relief valve functional73%6516-1%
All other hot water system valves functional (stop valve and cold water pressure relief valve where needed)72%6536-2%
Element capacity not applicable as house has either gas, heat pump, solid fuel or no booster system11%6506-4%
Electric hot water system with element capacity less than 1800 watts6%6506-1%
Electric hot water system with element capacity between 1800 to 2400 watts29%65065%
Electric hot water system with element capacity greater than 2400 watts47%6506-3%
No element size information950651%
System capacity
Hot water systems producing more than 50 litres of hot water per person per day (where houses were occupied at time of survey)47%76394%
System temperatures greater than 45ºC (minimum required)
Total of all hot water systems71%6936-3%
- of all electric powered hot water systems84%3512-2%
- of all solar powered hot water systems67%36331%
- of all gas powered hot water systems54%377-7%
- of all heat pump hot water systems81%53-12%
- of all solid fuel hot water systems18%178%
System temperatures greater than 62ºC (water too hot, increasing the chances of burns and running costs)
Total of all hot water systems27%7485-7%
- of all electric powered hot water systems51%28314%
- of all solar powered hot water systems15%4019-5%
- of all gas powered hot water systems18%2553%
- of all heat pump hot water systems13%483%
- of all solid fuel hot water systems0%130
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