[chrisseaton]

Can't say I've ever seen an outdoor boiler in a home counties garden. But maybe you're talking about something specific?

[throw0101a]

Three minute video:

* https://www.youtube.com/watch?v=_PL0yBdvSxA

12 minute video from an owner:

* https://www.youtube.com/watch?v=WQc8p-roy-E

Popular for off-grid situations.

[aqrit]

www.central-boiler.co.uk ?