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Intro. I am your expert on old building codes such as BABS 46-60, SBN 67-80, NR (89), BBR 1-29. Ask me your question with as detailed info as you can and year and I will produce what you need! Psst. If you need a little extra help out in the field, I also know the insertion codes for most units, as well as a reasonable overview of energy efficiency and minimum requirements for air exchange.

POXGPT OVK-EXPERTEN

@Jimmy Törnqvist