If you sell stationary refrigeration, air conditioning, heat pump and fire protection systems, you must get a letter from the end user to confirm the details of the qualified technicians they are using to installl”
The above relates to all installed types of air conditioning, a certified F-Gas installers name and registration number should suffice.
The below statement relates to all portable air conditioners that are supplied by us, there is nothing required for these units as they are sealed.
“You don’t need this letter if the equipment is hermetically sealed”
So to recap, this relates to the seller of fitted type air conditioners who are selling to the end user or to an installer of that equipment.