"Nicknoxx" wrote in message
...
There's certainly quite a price difference. Discounted heating lists
cylinders by Crown, Santon, Heatrea Sadia, Telford, Albion and Range

What should I look for apart from price?

Don't buy one at all. You need a BBA approved fitter and an annual service
charge of £60-100 per ann.

Get a heat bank. The Pandora http://www.heatweb.co.uk doesn't even need an
overflow pipe.
Look at:
http://www.rangecylinders.co.uk/products/flowmax/

No annual service charge and performance the same if not better. The range
units can have the CH run of the cylinder too.

Or look at a Rinnai high flow two bathroom multi-point. Far cheaper than an
unvented cylinder. Very reliable - made in Japan. They even have a model
that can be fitted outside.
http://www.discountedheating.co.uk/s...r_Heaters.html