Am hoping to get a yes or a no on the the question of whether the 800 is the same as a 600 except for the warranty and filter.
To hark back to the origins of this thread I rang Baxi to be make a couple of queries direct with the manufacturer and the fella there in Technical ( a very pleasant and helpful bloke) did say the 600 and 800 were the same boiler ... so, having now sorted out the question of Opentherm and controls, I'm now confused to hear about this different 800 boiler.
As mentioned above, when I check the specs on the Baxi website it shows, as far as I could see, the 600 and 800 Heat to be identical (apart from the warraty and filter) yet within the preceding posts there's a recommendation to go with the 600 (or the 800 if I want a longer warranty) ... but then I'm told the 600 is nothing but trouble and to go for 800 which is much better. But the Baxi website makes it appear they're both the same boiler.
You must admit it's confusing
Please come back and put me straight.