An inch paintbrush with the handle cut off. Just right for getting into dusty fans.
A nut riveter saves having to call baxi and wait for them to repair loose securing nuts on the solo and 100 he style heat exchangers
swivel head ratchet spanners. Britool do a nice set.
Mini knipex cobras as previously suggested.
bent/off set needle nose pliers, I have vice grip ones that work well
loooooong Phillips screwdriver
Schrader valve extension piece
heat sink compound
copper grease
black mamba gloves
nice selection of machine screws
socket set is a must
multi meter
volt pen
dust sheets cut to cover the kitchen work top
stubby screwdrivers
fan oil, wd40 and a rag
magnetic parts dish. (Cheers billy for that idea)
trigger/spray bottle with soapy water in it
blue roll looots of blue roll