Has anyone worked for Hussmann (or refrigeration/BAS)?

I have been applying to BAS roles online, but haven't been successful bc I just have a technical cert. I thought Hussmann would be a good starting point since its 'building automation' with PLC and Controls (according to the recruiter). I am stuck between sides from this and the general BAS. I guess is this still BAS and if so what has the progression been for you starting in refrigeration after leaving the industry into systems like Siemen, JNJ, Honeywell etc.