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Originally Posted by z80
I don't like that system.
With the storage tank at ground level...sure easy to install but..
The rocket scientist who designed it didn't realize that heat rises???
It relies on an electric motor to keep circulating the hot water from the panels to the tank.
The old fashioned units had the tank above the panels and used free thermo-siphoning to move the water.
Just more to go wrong and I'll bet you i won't be able to get the little re-circ motor after a few years when it craps itself...
Not for me....sorry.
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Mate your thinking like I am, any one in the industry with half a brain always buys the close coupled system, and they are still around (in fact I sold two this past week).
I agree with you that it seems almost pointless to design a system where the hottest point is at ground level, but it allows for flexibility. With any split system, if it uses a Grundfos pump, expect the pump to break every five years and cost about $350. If it's not a Grundfos, expect about 2.5 years and the same cost.
People want the tanks on the ground because they don't like the look of the tank, or think it's too heavy, or don;t have enough roof etc... just depends on the customer, really.