David Hansen wrote:
On 22 Nov 2005 14:54:03 -0800 someone who may be
wrote this:-
Commercial solar HW systems are a great way to throw your money away.
They are certainly not going to have a short payback period.
However, the same is true of double glazing. There are plenty of
other reasons for installing solar hot water systems than payback
period.
Suggest looking at solar flat plate space heating, less cost, more heat
gain.
Far more expensive if one is going to produce enough heat for a
house.
far cheaper in fact. They do not produce all the heat for a house, but
a substantial percentage. Far more than a commercial DHW panel ever
would.
A major problem is that the heat is available in the summer,
but needed in the winter.
heat is available in winter too, and it is this level the system is
designed for.
I suggest the original poster looks at two companies:
Both avoid mains powered pumps, which has many advantages.
it makes payback even poorer.
NT