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gkaro 10-05-2012 02:35 PM

I see from research that the Polaris water heater is a great option for using a combi dhw and space heater. Can't seem to find whether the side taps are connected to a dedicated heat exchanger or whether they are open to the potable water.

I'd like to avoid mixing the two systems.
Otherwise I would have to use a plate exchanger and more circs.

Any advise would help...

techpappy 10-05-2012 03:50 PM

Just checked online. It appears that some Polaris (Navien) water heaters are equipped with dual heat exchangers. Might be of more help if model number given.

gkaro 10-05-2012 04:10 PM

Thanks but navien (tankless) heaters Re not related. The units I'm talking about are high eff tank units by gsw or John woods.

Any opinions on using a water heater for dual purpose??

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