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Old 05-21-2022, 02:55 PM   #1
City: Palmetto
Vessel Name: MV RADIANT
Vessel Model: 1991 Carver Californian MY 4809
Join Date: Dec 2019
Posts: 24
Water Heaters

Itís time to research a replacement for my old Raritan 1700 series, 20 gal, hot water tank. Just trying to be proactive.

The Raritan has a glass lined steel tank, while most of the others (Kuuma, Isotemp, Seaward) all have aluminum tanks. The
Raritan has a 1250 watt element while some of the others have less, but Seaward has 1500 watts. Iím looking at units w/o heat exchangers.

Anyone have an opinion?
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Old 05-21-2022, 03:11 PM   #2
City: Rochester, NY
Vessel Name: Hour Glass
Vessel Model: Chris Craft Catalina 381
Join Date: Aug 2019
Posts: 5,195
I'm happy with the Isotemp I installed a few months ago. Stainless tank and very well insulated (much better than the previous Raritan heater). It came with a 750w element but I bought and installed the optional 1200w one for faster heating.
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Old 05-21-2022, 03:18 PM   #3
O C Diver's Avatar
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 10,973
I was happy with my Raritan, so I replaced it with the same during my refit, assuming it would outlive my ownership.

I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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Old 05-21-2022, 03:29 PM   #4
City: Great Lakes
Vessel Model: OA 440
Join Date: Aug 2017
Posts: 784
The 20 gallon Rartan unit on our boat still works fine after 32 years. I'll replace it with a Raritan when/if the time comes.
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Old 05-22-2022, 12:27 AM   #5
tiltrider1's Avatar
City: Seattle
Vessel Name: AZZURRA
Vessel Model: Ocean Alexander 54
Join Date: Aug 2017
Posts: 3,093
If a new Raritan has the plumbing in the same place then stick with it. It will save a ton of frustration of having to replumb the water lines.
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Old 05-22-2022, 08:30 PM   #6
C lectric's Avatar
City: Gibsons, B.C., Canada
Vessel Name: Island Pride
Vessel Model: Palmer 32'
Join Date: Oct 2007
Posts: 3,903
My 12 gal. Raritan is original to the boat, 45 yrs ago.

Shows no sign yet of leaking.

I know I will need to replace it at some point of course, unless it me that is replaced first.

Pretty hard to beat that Raritan although who knows if the next ones life will be the same.

The engine heats the tank, the electric element simply plugs the hole.
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Old 05-26-2022, 03:37 PM   #7
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City: Warwick, RI
Vessel Name: Susan Helena
Vessel Model: Albin40
Join Date: Oct 2014
Posts: 450
Isotemp here. Replaced a leaky Raritan 7 years ago. Mine has the heat exchanger but at the dock or anchored it's 120v. Two people nornal usage with dishes, quick showers, etc.
Repositioning lines is no issue. I used flexible stainless jacketed sink hoses from Ace hardware with ? 1/2" fittings.
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