Table 2.
Heating systems | |
Central | 30 |
Gas and oil heaters | 70 |
Interior conditions | |
Condensation | 56 |
Leaks | 67 |
Insulation | 33 |
Power supply | |
Electricity | 56 |
Gas | 67 |
Proximity to traffic | 89 |
Single pane glass | 78 |
Stone masonry | 78 |
Window frames (wood) | 67 |