Using the Hartell HEH DC pump as Central Heating Pump
We bought a Hartell HEH 10 DC pump as a backup for our 240V pump to drive our Central Heating System with 5 radiators from our 12V Solar Battery bank.
It works very well and seems to be as power full as our 240V pump with 40W/65W, although it needs only 18W. The circulating noise is a bit more than that from the mains pump, but still ok.
We can recommend this pump.
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