
Organized by EHPA (European Heat Pump Association AISBL)
DoubleTree by Hilton Brussels City is a fully renovated, sustainability‑certified business hotel located in the heart of Brussels, overlooking the Botanical Garden and within minutes of the EU institutions, NATO, and Brussels‑North Station. The hotel features 292 guestrooms, 18 flexible meeting rooms, and a 630 m² ballroom accommodating up to 700 delegates. All spaces offer natural daylight and advanced event technology, including full hybrid event capabilities supported by professional AV teams. The venue holds ISO 50001, ISO 9001, ISO 14001, and Green Key environmental certifications.
| Sycamore Ballroom | 615 | 700 | 3.9624 m |
| Beech | 35 | 39 | 3.048 m |
| Persimmon | 45 | 68 | 3.048 m |
| Walnut II | 37 | 32 | 3.9624 m |
| Ginkgo | 21 | 27 | 3.048 m |
| Chestnut | 119 | 114 | 3.048 m |
| Birch | 29 | 24 | 3.048 m |
| Chestnut II | 70 | 68 | 3.048 m |
| Mulberry | 46 | 68 | 3.048 m |
| Buckeye I | 49 | 45 | 3.048 m |
| Pagoda | 333 | 250 | 3.048 m |
| Pagoda foyer | 96 | 100 | 3.048 m |
| Walnut | 103 | 75 | 4 m |
| Buckeye | 101 | 101 | 3.048 m |
| Chestnut I | 49 | 60 | 3.048 m |
| Sycamore Ballroom I | 307 | 300 | 3.9624 m |
| Walnut III | 48 | 50 | 3.9624 m |
| Oak | 126 | 80 | 3.9624 m |
| Pagoda II | 88 | 100 | 3.048 m |
| First floor foyer | 223 | 150 | 3.9624 m |
| Buckeye II | 49 | 56 | 3.048 m |
| Grand Café 1909 | 350 | 250 | 4 m |
| Chequers | 21 | 26 | 3.048 m |
| Pagoda I | 202 | 100 | 3.048 m |
| Walnut I | 24 | 24 | 3.9624 m |
| Sycamore Ballroom foyer | 94 | 100 | 3.9624 m |
| Sycamore Ballroom II | 307 | 300 | 3.9624 m |
| Walnut foyer | 107 | 100 | 4.8768 m |

Organized by EHPA (European Heat Pump Association AISBL)