# Tag des offenen Heizungskellers 2026

Tag des offenen Heizungskellers 2026 at Greenpeace, Saturday 21 November 2026.

- Venue: Greenpeace, Marienstraße 19-20, 10117 Berlin
- Go to page: https://offenerheizungskeller.de/

![Tag des offenen Heizungskellers 2026](https://noky.io/images/44907d6babe9e50082636b94b82e5236856e6ffd4f7d0282e1f6c5d8f551d38b-600.webp)

Tag des offenen Heizungskellers is a nationwide day of action in which homeowners open their doors to show how climate-friendly heating technology works in everyday life. The day is run by a coalition that includes homeowners, volunteer teams and municipalities. Visitors can ask questions at eye level and get answers without any sales pressure. The aim is to provide practical insights, strengthen neighbourhoods and lower the hurdles to modernisation – practical, non-commercial and non-partisan.

## Dates

- Saturday 21 November — Greenpeace

Written by a model, sources: [offenerheizungskeller.de](https://offenerheizungskeller.de/)

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