Blower-Door-Test - Is the fireplace room-air dependent?

The Hark fireplace we have is good. The salespeople are just salespeople. They like to hear themselves talk. They really don’t have a clue. Especially after the signature, they are happy not to hear from anyone anymore. After that, the service was more than bad. "I’ll get back to you today." - means: "Call me again tomorrow to remind me."

Especially the hotline. Every time 20-30 minutes waiting time. If you’re lucky, you won’t be hung up on immediately.

Otherwise, I’d like to repeat my post #2

PS
I’m only talking about Hark Erfurt here.
I can’t say anything about other Hark salespeople.
But the hotline is the same (bad) all over Germany.

Thank you for your hint. However, I still do not understand your statement from #2. What does it save me during construction? I am neither building the house nor installing the chimney.

Exactly this discussion here

That costs nothing except reading a bit and educating yourself further

According to the drilling diagram, that should work. If the chimney sweep now issues the approval for it, then everything is fine?!

You probably still need a pressure monitor for the ventilation system. It's best to ask the chimney sweep about that. Because he has the final word.

Thank you for the confirmation. I find it strange that the chimney sweep does not include in his approval that a pressure monitor is necessary. I plan to call him today anyway!