Replacing hot water heater

Oct 28, 2023
15
Hunter 29.5 Midland, On
Anyone have tips/instructions on how best to disconnect the heat exchanger hoses? I have a Hunter 29.5 and a closed engine heating system.
 

jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
22,784
CAL 35 Cruiser #21 moored EVERETT WA
When I replaced the water heater on my boat (about 7 years ago), I lifted the coolant hoses above the engine, and gravity kept the coolant in place. After installing the WH in the boat, I attached the hoses to the new tank and added some antifreeze to top the unit up.

I'm not sure about your unit, but once I released the upper of the two hoses, the liquid flowed out of the other hose towards the engine to find equilibrium. It was one of the easier projects on my boat.
 
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