On 27/11/2014 07:21, Keefiedee wrote:
I recently came across (while looking for something else) a product
called UMAX, which is an additive for the water in a central heating
system that is said to

"change the way water boils, making the water in your radiators
hotter without turning them up. As water in a central heating system
passes over the heat exchanger in the boiler, a small percentage of
that water will boil on the hot metal surfaces. During this boiling a
layer of irregular bubbles forms which eventually join together and
act as insulator between the gas firing and the water within the
radiator circuit. Umax changes the way water boils so that only micro
bubbles form which do not coalesce greatly increasing the heating
efficiency and the transfer of heat from the boiler into the radiator
circuit. (see: https://www.youtube.com/watch?v=9mKxfzIuQLE)"

It sounded a bit far fetched, but I found some on eBay for just £3.99
post free, which was hardly going to break the bank, and lo and
behold, it seems to work, insofar as the radiators really are a lot
hotter - almost scaldingly hot.

I don't really understand why this means the boiler thermostat
doesn't cut out earlier - but I pass this on, being interested to see
if anyone else has had experience of this product.

A bit more background he

http://www.bgateway.com/press-centre...r-new-venture/



--
Cheers,

John.

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