rry
rWe have an antifreeze chemical in ours, no water. They were fine down to -15C last winter without needing to do that.
Jonathan
rry
rWe have an antifreeze chemical in ours, no water. They were fine down to -15C last winter without needing to do that.
Jonathan
I have a Navitron based solar system, been installed for 4 years so far (and generated 8.5MWh so far).
I would suggest:
Alan.
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