Cabin heater using RW??

[powerboat22]

Mercruiser 470 with A1.<br />Is it possible to cut in a small heating radiator into the RW flow to heat the cabin when engine runs?<br />The problem is if the impeller will be able to push enough water thru it for the FW cooling?<br />Did anyone tried that?<br />Thank you.

 

[Don S]

Re: Cabin heater using RW??

It's best to use the antifreeze side for the heater. The raw water side doesn't get very warm and wouldn't provide any heat in the cabin.

 

[crazy charlie]

Re: Cabin heater using RW??

You can hook it in where the water heater is hooked up.Charlie

 

[akriverrat]

Re: Cabin heater using RW??

put isolation valves in the hoses. so you can just shut them and keep going when, not if, the heater core corrodes through.

 

[imported_Mike_M2]

Re: Cabin heater using RW??

RW will work if it's fresh. Salt will kill it in a season. I've seen it done on lake boats, but even then it doesn't last more than a few seasons. FWC is the way to go, i have a 40,000btu heating my deck area.