Calculations for Heating

Hello, :)

I once read a post here that stated which calculations need to be made before it makes sense to decide on a particular heating system. Unfortunately, I can no longer find the post.
Can someone tell me what the title was or simply list again which calculations should be available beforehand.

Thanks in advance!

Regards
Tatze

...at some point I read a post here that specified which calculations need to be done before it makes sense to decide on a specific heating system.

Sometimes the search function helps ;) The decisive factor is always the actual demand (power/energy; heating/hot water) based on the building parameters, climate location, and individual user behavior. => demand forecast

1. Energy Saving Ordinance/ KfW proof - optimization
2. Air volume plan/ventilation concept according to 1946-6, if controlled residential ventilation w/o heat recovery is planned
3. Heating load calculation according to 12831
4. Heating surface dimensioning radiators/floor heating/WH according to EN DIN
5. System hydraulics
6. Dimensioning of hot water preparation
7. Selection/recommendation of heat generator
8. Consumption forecast

Best regards