123enen.....can't agreee, installed a 'low-line' system, elec. off peak, 24 yrs ago, brilliant!
Family 4, Winter...showers for all without boost, except in prolong periods of rain (then requires 1 hr boost). Summer...rain, same prob. Full sun, water hot enough to cook spuds..lol
Will replace with 'evacuated tube' style, when this dies, as they're even more efficient.
Beams...I'm sure they've got 'pilot-less' setups now for gas. Ignition on demand
Important to clean collectors at least couple times yr. too
