[sanjuro]

Which of these two would be the best option as an inline heater ? does the hot box have to stay in the van ? how hot would either get cold water at the wand ? where would i buy a diesel hotbox in the UK ?

[Mike Halliday]

you can't buy Little Giants in this country.

I use a hot box, the heat is incredible it will produce steam at 18lts/min which is probably 6times the amount you will ever use with a wand.

Mine stays in the van and is plumbed into the T/M.

you can buy them from a few places, if you search google you'll them but they need altering to work for carpet cleaning other wise it will creates massive heat spikes.