Tables for Section 5
Table 5.1: Summary survey data, Invercargill
| Location | Households – 2004 | Sample size | Sample error |
|---|---|---|---|
Invercargill |
16,438 |
158 |
7.8% |
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Table 5.2: Domestic home heating methods and fuels, Invercargill
| Households | Winter fuel use (July) | |||
|---|---|---|---|---|
| % | Number | Tonnes/day | % | |
Electricity |
63% |
10,300 |
- |
- |
Total gas |
18% |
2913 |
3 |
1% |
Flued gas |
5% |
755 |
- |
- |
Unflued gas |
13% |
2158 |
- |
- |
Oil |
3% |
416 |
0.1 |
0.0% |
Open fire |
8% |
1248 |
- |
- |
Open fire: wood |
7% |
1144 |
33 |
7% |
Open fire: coal |
6% |
1040 |
12 |
3% |
Total wood burner |
17% |
2809 |
58 |
13% |
Pre-1994 wood burner |
4% |
733 |
25 |
5% |
1994–99 wood burner |
5% |
855 |
18 |
4% |
Post-1999 wood burner |
7% |
1221 |
16 |
3% |
Multi-fuel burners |
34% |
5514 |
- |
- |
Multi-fuel burners: wood |
34% |
5514 |
184 |
40% |
Multi-fuel burners: coal |
33% |
5410 |
160 |
35% |
Pellet burners |
2% |
312 |
4 |
1% |
Total wood |
58% |
9467 |
276 |
61% |
Total coal |
39% |
6450 |
172 |
38% |
Total |
63% |
10,300 |
||
* 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 5.3: Monthly variations in heating behaviour and fuel use, Invercargill
| Percentage of houses using this method that use it each month | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Gas |
4% |
7% |
19% |
48% |
81% |
81% |
81% |
78% |
70% |
48% |
4% |
4% |
Open fire |
9% |
18% |
18% |
18% |
82% |
100% |
91% |
91% |
73% |
27% |
18% |
9% |
Wood burner |
4% |
4% |
26% |
44% |
78% |
93% |
93% |
96% |
85% |
52% |
11% |
7% |
Multi-fuel |
4% |
2% |
18% |
43% |
86% |
98% |
98% |
96% |
67% |
51% |
6% |
6% |
| 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 |
4 |
6 |
5 |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
4 |
4 |
Open fire |
2 |
3 |
3 |
4 |
5 |
5 |
5 |
5 |
5 |
5 |
3 |
1 |
Wood burner |
7 |
7 |
6 |
6 |
6 |
6 |
7 |
6 |
6 |
5 |
7 |
7 |
Multi-fuel |
3 |
5 |
6 |
6 |
6 |
7 |
6 |
6 |
6 |
5 |
5 |
5 |
| Daily fuel use (tonnes) | ||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Gas |
0.0 |
0.3 |
0.5 |
1.7 |
3.3 |
3.3 |
3.2 |
3.1 |
2.2 |
1.5 |
0.0 |
0.0 |
Open fire: wood |
0.2 |
0.4 |
0.4 |
0.6 |
32.0 |
36.2 |
33.3 |
33.3 |
45.8 |
44.1 |
0.5 |
0.1 |
Open fire: coal |
0.5 |
2.4 |
2.4 |
4.0 |
10.5 |
15.4 |
12.2 |
11.9 |
8.6 |
3.7 |
2.9 |
0.3 |
Wood burner |
2.0 |
2.0 |
4.7 |
10.6 |
49.9 |
58.3 |
58.4 |
56.9 |
24.1 |
16.5 |
3.1 |
3.1 |
Multi-fuel: wood |
1.5 |
1.5 |
17.1 |
40.1 |
169.6 |
184.8 |
184.0 |
180.4 |
37.6 |
24.7 |
4.4 |
3.9 |
Multi-fuel: coal |
3.2 |
3.0 |
15.9 |
28.6 |
152.3 |
160.0 |
159.7 |
157.6 |
61.0 |
28.8 |
7.0 |
6.6 |
| Daily fuel use (kg) per household (for households using that method) | ||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Gas |
0.0 |
0.1 |
0.2 |
0.6 |
1.1 |
1.1 |
1.1 |
1.1 |
0.8 |
0.5 |
0.0 |
0.0 |
Open fire: wood |
0.1 |
0.3 |
0.3 |
0.5 |
28.0 |
31.6 |
29.1 |
29.1 |
40.0 |
38.5 |
0.4 |
0.1 |
Open fire: coal |
0.5 |
2.3 |
2.3 |
3.9 |
10.1 |
14.8 |
11.7 |
11.4 |
8.2 |
3.6 |
2.8 |
0.3 |
Wood burner |
0.7 |
0.7 |
1.7 |
3.8 |
17.8 |
20.8 |
20.8 |
20.2 |
8.6 |
5.9 |
1.1 |
1.1 |
Multi-fuel: wood |
0.3 |
0.3 |
3.1 |
7.3 |
30.8 |
33.5 |
33.4 |
32.7 |
6.8 |
4.5 |
0.8 |
0.7 |
Multi-fuel: coal |
0.6 |
0.6 |
2.9 |
5.3 |
28.2 |
29.6 |
29.5 |
29.1 |
11.3 |
5.3 |
1.3 |
1.2 |
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Table 5.4: Estimated daily fuel use, by season, Invercargill
| Winter fuel use kg/day | Non-winter fuel use kg/day | |
|---|---|---|
Gas |
2 |
1 |
Open fire: wood |
36 |
40 |
Open fire: coal |
21 |
11 |
Wood burner |
32 |
17 |
Multi-fuel: wood |
37 |
11 |
Multi-fuel: coal |
33 |
14 |
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Table 5.5: Average monthly heating costs (winter), Invercargill
| Winter month cost | |
|---|---|
Electric |
$119 |
Gas |
$115 |
Open fire |
$55 |
Wood burner |
$60 |
Pellet burner |
$76 |
Multi-fuel |
$155 |
Oil |
$123 |
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Table 5.6: Type of electric heating, Invercargill
| Night store | Radiant | Portable oil column | Panel | Fan | Heat pump | Don't know/ refused | Other | |
|---|---|---|---|---|---|---|---|---|
Households |
2185 |
1352 |
1769 |
624 |
2913 |
3121 |
- |
624 |
Percent |
21% |
13% |
17% |
6% |
28% |
30% |
- |
6% |
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Table 5.7: Home heating method, by house ownership, Invercargill
| Households living in rental | Percent living in rental | Households living in own house | Percent living in own house | |
|---|---|---|---|---|
Total |
3745 |
23% |
12,693 |
77% |
Electric |
2601 |
25% |
7699 |
75% |
Gas |
1248 |
43% |
1665 |
57% |
Open fire |
312 |
25% |
936 |
75% |
Wood burner |
312 |
11% |
2497 |
89% |
Pellet burner |
0 |
0% |
312 |
100% |
Multi-fuel |
832 |
15% |
4682 |
85% |
Oil |
104 |
25% |
312 |
75% |
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Table 5.8: House insulation summary statistics, Invercargill
| Insulation type | Degree of insulation | |||
|---|---|---|---|---|
| Households | % | |||
Ceiling |
12,276 |
75% |
No insulation |
11% |
Under floor |
1977 |
12% |
1 type* |
31% |
Wall |
6762 |
41% |
2 types |
34% |
Cylinder wrap |
2809 |
17% |
3 types |
9% |
Double glazing |
1561 |
9% |
4 types |
7% |
None |
1769 |
11% |
5 types |
0% |
Don't know |
1144 |
7% |
Don't know |
7% |
Other |
416 |
3% |
||
* 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 5.9: Degree of house insulation, by heating method, Invercargill
| Degree of insulation | Electric | Gas | Wood burner | Multi-fuel | Open fire |
|---|---|---|---|---|---|
1 type |
34% |
36% |
30% |
36% |
17% |
2 types |
31% |
21% |
41% |
36% |
25% |
3 types |
8% |
0% |
15% |
6% |
17% |
4 types |
8% |
7% |
4% |
9% |
0% |
5 types |
0% |
0% |
0% |
0% |
0% |
None or don't know |
18% |
36% |
11% |
13% |
42% |
Total |
100% |
100% |
100% |
100% |
100% |
* Note: columns may not sum exactly to 100 due to rounding error.
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Table 5.10: Home heating method, by household income, Invercargill
| Electric | Gas | Wood burner | Multi-fuel | Open fire | |
|---|---|---|---|---|---|
Non-response |
27% |
21% |
15% |
28% |
42% |
Less than $20,000 |
18% |
18% |
11% |
9% |
17% |
$20,000 to $30,000 |
15% |
25% |
22% |
13% |
0% |
$30,000 to $40,000 |
6% |
11% |
7% |
11% |
17% |
$40,000 to $50,000 |
10% |
0% |
11% |
8% |
0% |
$50,000 to $70,000 |
9% |
11% |
15% |
19% |
8% |
$70,000 to $100,000 |
7% |
11% |
11% |
6% |
17% |
More than $100,000 |
6% |
4% |
7% |
6% |
0% |
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Table 5.11: Home heating method, by age of dwelling, Invercargill
| Age of dwelling | Electric | Gas | Wood burner | Multi-fuel | Open fire |
|---|---|---|---|---|---|
10 years or less |
8% |
4% |
4% |
2% |
0% |
11–20 years |
7% |
11% |
4% |
9% |
0% |
21–40 years |
38% |
21% |
33% |
34% |
50% |
41+ years |
34% |
39% |
56% |
43% |
42% |
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Table 5.12: Home heating method, by number of bedrooms, Invercargill
| Number of bedrooms | Electric | Gas | Wood burner | Multi-fuel | Open fire |
|---|---|---|---|---|---|
1 |
2% |
0% |
0% |
0% |
0% |
2 |
28% |
18% |
11% |
6% |
0% |
3 |
56% |
61% |
74% |
74% |
75% |
4 |
9% |
14% |
11% |
17% |
17% |
5 |
2% |
4% |
4% |
2% |
8% |
6 |
0% |
0% |
0% |
0% |
0% |
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