Age of heating equipment
Classification structure
| Code | Title |
|---|---|
| 1 | Age of principal heating equipment, 5 years old and under |
| 2 | Age of principal heating equipment, 6 to 10 years old |
| 3 | Age of principal heating equipment, over 10 years old |
- Date modified:
| Code | Title |
|---|---|
| 1 | Age of principal heating equipment, 5 years old and under |
| 2 | Age of principal heating equipment, 6 to 10 years old |
| 3 | Age of principal heating equipment, over 10 years old |