A friend showed me this wonderful organization. I came a second time with a question to change the 40l oxygen tank to the same carbon dioxide one. They listened, diagnosed my balcony and changed it with a minimum surcharge. Thank you, I will contact you again.
We looked at the boiler. The price is average, and the warranty is long-lasting. We also needed valves on the battery, as one had broken down. The price of valves is lower than on marketplaces.