You're talking electric units only, I assume? There have been attempts to market propane-fired demand water heaters for boats, but they are all unsafe for marine use and prohibited by ABYC standards.
Here's a thread discussing the issue: http://www.yachtforums.com/threads/on-demand-water-heater.18579/ On Wed, Sep 14, 2016 at 9:53 AM, Doug Thomas <[email protected]> wrote: > Has anyone had any experience or thoughts on marine-grade tankless water > heaters? It seems like a good idea on the surface. Water heated on-demand, > thus lower electrical usage. Output seems adequate, but I have to check > what the clothes washer draws. A possible drawback might be no showers > during clothes washing, but that may be minor. > > > > Any thoughts? > > > > Doug > > -- > You received this message because you are subscribed to the Google Groups > "UnifliteWorld" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/unifliteworld. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/unifliteworld. For more options, visit https://groups.google.com/d/optout.
