Christchurch
Table 19.1: Summary survey data, Christchurch
| Location | Households – 2004 | Sample size | Sample error |
|---|---|---|---|
125,125 | 150 | 8.0% |
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Table 19.2: Domestic home heating methods and fuels, Christchurch
| Households | Winter fuel use (July) | |||
|---|---|---|---|---|
| % | Number | Tonnes/day | % | |
Electricity | 72% | 90,090 | - | - |
Total gas | 25% | 30,864 | 31 | 5% |
Flued gas | 8% | 10,010 | - | - |
Unflued gas | 17% | 20,854 | - | - |
Oil | 1% | 834 | - | - |
Open fire | 6% | 7508 | - | - |
Open fire: wood | 6% | 7508 | 82 | 12% |
Open fire: coal | 1% | 1668 | 15 | 2% |
Total wood burner | 19% | 23,357 | 511 | 77% |
Pre-1994 wood burner | 8% | 10,010 | 245 | 37% |
1994–99 wood burner | 9% | 11,122 | 200 | 30% |
Post-1999 wood burner | 2% | 2224 | 67 | 10% |
Multi-fuel burners | 1% | 834 | - | - |
Multi-fuel burners: wood | 1% | 834 | - | - |
Multi-fuel burners: coal | 1% | 834 | 15 | 2% |
Pellet burners | 1% | 1668 | 7 | 1% |
Total wood | 25% | 31,698 | 593 | 90% |
Total coal | 2% | 2503 | 30 | 5% |
Total | 125,125 | 661 | ||
* Note: rounding errors may occur in the proportion of burners in different age categories and in types of gas heating.
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Table 19.3: Monthly variations in heating behaviour and fuel use, Christchurch
| Percentage of houses using this method that use it each month | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Gas | 9% | 9% | 15% | 30% | 76% | 91% | 97% | 88% | 70% | 45% | 18% | 9% |
Open fire | 14% | 14% | 14% | 29% | 29% | 86% | 86% | 57% | 43% | 14% | 14% | 14% |
Wood burner | 4% | 4% | 7% | 21% | 57% | 86% | 86% | 82% | 43% | 14% | 7% | 4% |
| Average number of days per week house is heated (only for those heating during that month) | ||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Gas | 3 | 7 | 7 | 6 | 5 | 6 | 6 | 6 | 5 | 5 | 5 | 7 |
Open fire | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 6 | 6 | 3 | 3 | 3 |
Wood burner | 4 | 4 | 3 | 5 | 6 | 6 | 6 | 6 | 5 | 4 | 4 | 1 |
| Daily fuel use (tonnes) | ||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Gas | 3.3 | 3.3 | 3.3 | 6.8 | 18.1 | 28.4 | 31.0 | 29.0 | 13.0 | 7.1 | 3.4 | 3.3 |
Open fire: wood | 8.2 | 8.2 | 8.2 | 22.4 | 17.8 | 81.5 | 81.5 | 36.2 | 57.7 | 8.2 | 8.2 | 8.2 |
Open fire: coal | 0.0 | 0.0 | 0.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 0.0 | 0.0 | 0.0 |
Wood burner | - | - | - | - | 320.9 | 499.4 | 511.4 | 430.8 | - | - | - | - |
| Daily fuel use (kg) per household (for households using that method) | ||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Gas | 0.1 | 0.1 | 0.1 | 0.2 | 0.6 | 0.9 | 1.0 | 0.9 | 0.4 | 0.2 | 0.1 | 0.1 |
Open fire: wood | 1.1 | 1.1 | 1.1 | 3.0 | 2.4 | 10.9 | 10.9 | 4.8 | 7.7 | 1.1 | 1.1 | 1.1 |
Open fire: coal | 0.0 | 0.0 | 0.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 | 0.0 | 0.0 | 0.0 |
Wood burner | - | - | - | - | 13.7 | 21.4 | 21.9 | 18.4 | - | - | - | - |
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Table 19.4: Estimated daily fuel use, by season, Christchurch
| Winter fuel use kg/day | Non-winter fuel use kg/day | |
|---|---|---|
Gas | 1 | 1 |
Open fire: wood | 29 | 12 |
Open fire: coal | 9 | 9 |
Wood burner | 25 | 23 |
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Table 19.5: Average monthly heating costs (winter), Christchurch
| Winter month cost | |
|---|---|
Electric | $76 |
Gas | $91 |
Open fire | $42 |
Wood burner | $80 |
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Table 19.6: Type of electric heating, Christchurch
| Night store | Radiant | Portable oil column | Panel | Fan | Heat pump | Don't know/ refused | Other | |
|---|---|---|---|---|---|---|---|---|
Households | 11,678 | 12,513 | 31,698 | 7508 | 19,186 | 10,844 | - | 6673 |
Percent | 13% | 14% | 37% | 9% | 22% | 13% | - | 8% |
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Table 19.7: Home heating method, by house ownership, Christchurch
| Households living in rental | Percent living in rental | Households living in own house | Percent living in own house | |
|---|---|---|---|---|
Total | 53,387 | 43% | 71,738 | 57% |
Electric | 38,372 | 43% | 51,718 | 57% |
Gas | 11,678 | 38% | 19,186 | 62% |
Open fire | 5839 | 78% | 1668 | 22% |
Wood burner | 5005 | 21% | 18,352 | 79% |
Pellet burner | 1668 | 0% | 0 | 0% |
Multi-fuel | 834 | 100% | 0 | 0% |
Oil | 0 | 0% | 834 | 100% |
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Table 19.8: House insulation summary statistics, Christchurch
| Insulation type | Degree of insulation | |||
|---|---|---|---|---|
| Households | % | |||
Ceiling | 77,578 | 62% | No insulation | 18% |
Under floor | 23,357 | 19% | 1 type | 28% |
Wall | 42,543 | 34% | 2 types | 21% |
Cylinder wrap | 29,196 | 23% | 3 types | 13% |
Double glazing | 17,518 | 14% | 4 types | 9% |
None | 22,523 | 18% | 5 types | 2% |
Don't know | 13,347 | 11% | Don't know | 11% |
Other | 0 | 0% | ||
* One type means the household has just one of: ceiling, under floor or wall insulation, a cylinder wrap or double glazing; two types are any two of these, etc.
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Table 19.9: Degree of house insulation, by heating method, Christchurch
| Degree of insulation | Electric | Gas | Wood burner | Multi-fuel | Open fire |
|---|---|---|---|---|---|
1 type | 28% | 35% | 29% | 100% | 11% |
2 types | 22% | 19% | 25% | 0% | 11% |
3 types | 13% | 16% | 18% | 0% | 0% |
4 types | 6% | 8% | 14% | 0% | 11% |
5 types | 3% | 0% | 0% | 0% | 0% |
None or don't know | 29% | 22% | 14% | 0% | 67% |
Total | 100% | 100% | 100% | 100% | 100% |
* Note: columns may not sum exactly to 100 due to rounding error.
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Table 19.10: Home heating method, by household income, Christchurch
| Electric | Gas | Wood burner | Multi-fuel | Open fire | |
|---|---|---|---|---|---|
Non-response | 31% | 38% | 21% | 0% | 11% |
Less than $20,000 | 19% | 3% | 0% | 100% | 22% |
$20,000 to $30,000 | 13% | 14% | 11% | 0% | 0% |
$30,000 to $40,000 | 15% | 22% | 25% | 0% | 44% |
$40,000 to $50,000 | 5% | 11% | 14% | 0% | 11% |
$50,000 to $70,000 | 6% | 8% | 11% | 0% | 11% |
$70,000 to $100,000 | 9% | 3% | 11% | 0% | 0% |
More than $100,000 | 3% | 3% | 7% | 0% | 0% |
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Table 19.11: Home heating method, by age of dwelling, Christchurch
| Age of dwelling | Electric | Gas | Wood burner | Multi-fuel | Open fire |
|---|---|---|---|---|---|
10 years or less | 22% | 19% | 4% | 0% | 11% |
11–20 years | 14% | 8% | 7% | 0% | 0% |
21–40 years | 24% | 16% | 21% | 0% | 11% |
41+ years | 32% | 46% | 64% | 100% | 78% |
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Table 19.12: Home heating method, by number of bedrooms, Christchurch
Number of bedrooms | Electric | Gas | Wood burner | Multi-fuel | Open fire |
|---|---|---|---|---|---|
1 | 12% | 0% | 4% | 0% | 44% |
2 | 44% | 24% | 25% | 0% | 22% |
3 | 33% | 59% | 46% | 100% | 0% |
4 | 8% | 16% | 18% | 0% | 22% |
5 | 2% | 0% | 4% | 0% | 11% |
6 | 0% | 0% | 4% | 0% | 0% |
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Tables for Section 19
November 2005
© Ministry for the Environment