What size of surface do I need?
The needed surface on Your roof will be detemined depending on whether you want to provide only hot water or in addition to heat. With a low roof you should preferably use vacuum tube collectors, because these generate a higher power per square meter.
If you want an offer, then please download our registration sheet as PDF file.
Overview
| Hot water Number of persons | Warm water + heating Number of persons | Flat-plate collector | Vaccum tube collector |
| up to 2 | - | 3,5 - 4m² | 3 - 3,5m² |
| 2 to 4 | - | 4,5 - 5,5m² | 3 - 3,5m² |
| 4 to 5 | up to 3 + Heizen | 6 - 6,5m² | 4,5 - 5,5m² |
| 5 to 8 | up to 4 + Heizen | 7 - 8m² | 6 - 7m² |
| 7 to 10 | up to 5 + Heizen | 9 - 11m² | 7,5 - 8,5m² |
| 9 to 12 | up to 6 + Heizen | 12 - 14m² | 9 - 9,5m² |
| 11 to 15 | up to 7 + Heizen | 15 - 17m² | 12 - 12,5m² |