Adam Frey’s username in the Bubble forums is HVAC_designer; his job with Design HVAC Experts is designing heat-loss. He’s the guy who calculates how well your house can maintain its temperature in order to figure out how big your Heating, Ventilation, and Air Conditioning (HVAC) system should be.
This is a companion discussion topic for the original entry at https://bubble.io/blog/from-excel-to-excellent/