B 1.2.1 Power type | % of houses | No. houses surveyed |
---|
Electric powered hot water system | 49% | 5933 |
Solar powered hot water system | 44% | 5933 |
Gas powered hot water system | 3% | 5933 |
Heat pump powered hot water system | 2% | 5933 |
Solid fuel powered hot water system | 0% | 5933 |
No hot water system | 1% | 5933 |
B 1.2.2 System Component Performance | % of houses | No. houses surveyed |
---|
ALL other hot water system valves functional (stop valve and cold water pressure relief valve where needed) | 73% | 5035 |
Hot water pressure release/relief valve functional | 74% | 4968 |
Element capacity not applicable as houses have gas, heat pump, solid fuel or no booster system | 9% | 5172 |
Electric hot water system with element capacity less than 1800 watts | 4% | 5172 |
Electric hot water system with element capacity between 1800 to 2400 watts | 20% | 5172 |
Electric hot water system with element capacity greater than 2400 watts | 56% | 5172 |
No element size information | 11% | 5172 |
B 1.2.3 System Capacity | % of houses | No. houses surveyed |
---|
Hot water systems (HWS) producing more than 50 litres of hot water per person per day (where houses were occupied at time of survey) | 57% | 5936 |
B 1.2.4 System temperatures greater than 45*C (minimum required) | % of houses | No. houses surveyed |
---|
HWS > 45ºC ALL types | 78% | 5856 |
HWS > 45ºC Elec | 88% | 5856 |
HWS > 45ºC Solar | 70% | 5856 |
HWS > 45ºC Gas | 59% | 5856 |
HWS > 45ºC Heat pump | 74% | 5856 |
HWS > 45ºC Solid fuel | 29% | 5856 |
B 1.2.5 System temperatures greater than 62ºC (water too hot, increasing the chances of burns and running costs) | % of houses | No. houses surveyed |
---|
Initial temp: hot water scalding >= 62.5ºC | 22% | 5897 |
HWS > 62ºC : Elec | 37% | 5856 |
HWS > 62ºC : Solar | 13% | 5856 |
HWS > 62ºC : Gas | 15% | 5856 |
HWS > 62ºC : Heat pump | 18% | 5856 |
HWS > 62ºC : Solid fuel | 0% | 5856 |