Long term use of solar water heaters should not be how to maintain?
2 let go of all the water.3 find something to block the vacuum tube, so that it no longer absorb heat, or simply remove the pipe.4 the whole machine are covered to prevent dust into the machine.
Unplugged, on the roof, the winter without flowers, the water emptying, prevent freezing water, then put a summer on the line, the water will slowly evaporate, I do this is not a problem, the sensor in the water tank, and the electric heater life is generally 1 to 2 years that belongs to consumables, what was bad, what time to find someone to repair it, the glass tube is generally not bad
Long term maintenance method of solar water heater:1 do a clean up and clean the water heater.
