I'm thinking of setting up for myself in the emerging heating / hw technologies mainly gshps. I know worcester run a 2 day course but that seems a little quick to me as a breakdown guy. Has anyone done it or any similar courses and what are the setup costs like?. I'm guessing its a 2 - 3 man job to install these beasts?. Is there any sort of certification needed to safely deal with, and install the glycol etc?. I'm purely thinking domestic by the way.