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18-04-2018, 17:08
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#1
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Registered User
Join Date: Oct 2006
Location: Nanaimo, BC
Boat: Sceptre 36
Posts: 454
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Diesel Demand Water Heater
Have searched with no current results. Is there a stand alone diesel hot water heater anywhere? Already have Espar heat, just want morning shower. Does it exist? Had a Paloma on previous boat and it was wonderful! Need an insureable diesel option.
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18-04-2018, 19:16
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#2
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Registered User
Join Date: Oct 2006
Location: Nanaimo, BC
Boat: Sceptre 36
Posts: 454
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Re: Diesel Demand Water Heater
I assume this means no such product exists?
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18-04-2018, 19:24
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#3
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Registered User
Join Date: Nov 2006
Location: San Francisco Bay
Boat: Fantasia 35
Posts: 1,251
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Re: Diesel Demand Water Heater
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18-04-2018, 19:28
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#4
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Registered User
Join Date: Oct 2006
Location: Nanaimo, BC
Boat: Sceptre 36
Posts: 454
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Re: Diesel Demand Water Heater
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18-04-2018, 19:28
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#5
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Registered User
Join Date: Aug 2011
Location: Vancouver, BC
Boat: C&C Landfall 38
Posts: 822
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Re: Diesel Demand Water Heater
I have the demand hot water heater........but it comes with a 4 zone hydronic boat heater......
Marine Heating Systems – Itrheat
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18-04-2018, 19:55
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#6
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Registered User
Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 3,537
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Re: Diesel Demand Water Heater
Search for oil water heaters. There are many, tankless, tanked etc.
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19-04-2018, 10:42
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#7
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Registered User
Join Date: Feb 2012
Location: Martinique Island French Caribbean
Boat: Cal-40
Posts: 420
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Re: Diesel Demand Water Heater
Webasto makes a small unit that burns diesel and it’s used to keep warm the engines of semi trucks so they don’t have to run their engines at night in cold weather. A typical semi cooling system holds around 10 gallons of coolant. I think it possible to install one of these units on your boat and use it to heat the water in a 5-10 gallon tank for showers.
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20-04-2018, 05:21
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#8
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Registered User
Join Date: Oct 2014
Location: Florida
Boat: Scout 30
Posts: 3,112
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Re: Diesel Demand Water Heater
Quote:
Originally Posted by Viking Sailor
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This looks like a well designed high quality unit & at $1,880 it's priced like boat stuff. Some feedback from actual users would be interesting. Another option is a Honda 2000. Top up your batteries in the morning while you're running your electric water heater.
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20-04-2018, 05:43
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#9
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Registered User
Join Date: Nov 2015
Location: Fl
Boat: Wauquiez Hood 38
Posts: 1,187
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Re: Diesel Demand Water Heater
Whatever you choose make sure your insurance agent will sign off on it.
__________________
Keth
Boat Vinyl Lettering and Graphics
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21-04-2018, 14:24
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#10
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Moderator
Join Date: Mar 2009
Location: Denmark (Winter), Cruising North Sea and Baltic (Summer)
Boat: Cutter-Rigged Moody 54
Posts: 34,196
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Re: Diesel Demand Water Heater
Quote:
Originally Posted by Rex Delay
Have searched with no current results. Is there a stand alone diesel hot water heater anywhere? Already have Espar heat, just want morning shower. Does it exist? Had a Paloma on previous boat and it was wonderful! Need an insureable diesel option.
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Is it Espar hydronic or air? If it's hydronic, you've already got it. For instant hot water, a plate type heat exchanger will do it. Or use a calorifier.
If it's air, then you will need to add a hydronic unit for hot water. You can add some radiators as a bonus.
__________________
"You sea! I resign myself to you also . . . . I guess what you mean,
I behold from the beach your crooked inviting fingers,
I believe you refuse to go back without feeling of me;
We must have a turn together . . . . I undress . . . . hurry me out of sight of the land,
Cushion me soft . . . . rock me in billowy drowse,
Dash me with amorous wet . . . . I can repay you."
Walt Whitman
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21-04-2018, 15:37
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#11
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Registered User
Join Date: Oct 2006
Location: Nanaimo, BC
Boat: Sceptre 36
Posts: 454
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Re: Diesel Demand Water Heater
Espar is air. Last boat had a Paloma propane demand heater and it was pure luxury. Hot shower anytime. Seeking diesel alternatives has been challenging. In a wet climate, forced air systems are the driest heat, hydronic will make hot water but not dry the boat. Looking for demand hot water for under $1k. Do not wish to replace a functional heating system for big $ just for shower!
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21-04-2018, 17:11
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#12
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Registered User
Join Date: Oct 2006
Location: Nanaimo, BC
Boat: Sceptre 36
Posts: 454
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Re: Diesel Demand Water Heater
Current thinking is to replace my 30 yr old electric/heat exchange water tank with new, hopefully more efficient tank. Last time we used the engine purely for hot water production, it took 45 minutes! Perhaps a new tank will work better?
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21-04-2018, 17:18
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#13
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Registered User
Join Date: Jul 2005
Location: Bellingham
Boat: Outbound 44
Posts: 9,319
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Re: Diesel Demand Water Heater
Quote:
Originally Posted by Rex Delay
Current thinking is to replace my 30 yr old electric/heat exchange water tank with new, hopefully more efficient tank. Last time we used the engine purely for hot water production, it took 45 minutes! Perhaps a new tank will work better?
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The ITR on-demand diesel heater mentioned above fits in about the space of a hot water tank.
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21-04-2018, 18:38
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#14
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Registered User
Join Date: Nov 2015
Location: Fl
Boat: Wauquiez Hood 38
Posts: 1,187
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Re: Diesel Demand Water Heater
No insurance company will approve a Paloma.
__________________
Keth
Boat Vinyl Lettering and Graphics
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21-04-2018, 19:21
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#15
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Registered User
Join Date: Oct 2006
Location: Nanaimo, BC
Boat: Sceptre 36
Posts: 454
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Re: Diesel Demand Water Heater
Quote:
Originally Posted by Bleemus
No insurance company will approve a Paloma.
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That is why I seek alternate
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