The right way to clean a gas boiler Heat Exchanger

I see far too many videos from gas engineers (and gas trainers) cleaning boiler heat exchangers with a drill and nylon brush.
This is NOT the way to do it. Manufacturers' instructions specifically state not to. It scratches the heat exchanger which will eventually cause corrosion.
I use water and a Viessmann cleaning too for cleaning between the grooves. For very dirty heat exchangers I use a specific combustion side cleaner that I bought from Canada, Axi-Therm 'Clean F Steel' for stainless steel heat exchangers.
viessmanndirec...

[@thomashagan1264]

Nice one thanks

[@dairyannguyen5921]

Great vid, any cheap alternative to that spatula tool? Only I could find is veissmann thats nearly $200

[@LondonGas]

£48 in UK. viessmanndirect.co.uk/Catalogue/Accessories/Accessories-File/Vitodens-Cleaning-Kit-7858492

[@lekanshanu5512]

Where do you buy in the Uk pls

[@LondonGas]

As far as I know it's not for sale in the UK, I import mine from Canada.
I'm in discussions with the company that makes it about becoming a UK distributor.
If anything progresses with that I'll come back to you.