We have one and have used it several times whilst on rallies with no EUP. They are ok better than no heat, a fan heater is the best which we use if on EUP.
Gas heaters produce a lot of water - Condensation in an awning would be considerable IMHO Fan heater much better option I'd have thought...................
------------- Caught in the crossfire between childhood and stardom.................
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.