On Wed, 17 May 2006 08:59:20 GMT someone who may be John Stumbles
wrote this:-

If a boiler does _not_ have electric ignition but has a constant pilot
light then it is a dinosaur with seasonal efficiency in the region of 65%.
The controls are likely to be primitive, too. It will make far more sense
to replace it with a high-efficiency boiler with updated controls than put
in solar water heating.

Who said anything about this being an either/or question?


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54