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this is interesting, maybe i could use a simple hand pump as well and not worry about the integrated pump the money i'm saving from the system would be eaten up by the cost of getting professional into service it... its not worth it. either i can do these small topups myself or i just turn the...

Hi, I have a solar hot water system in my house (came with the house when i bought it) The pressure in the system is low and i want to top it up. (lower than shown in the attached picture) the system is filled with a glycol mix, so i would have to top up with that fluid. but i am wondering...