Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-02-2018, 01:53 AM   #1
Lt. Commander
 
mrt214's Avatar
 
Join Date: May 2013
Location: Pittsburgh,Pa
Posts: 173
Default Hot water heater

Hi gang,

Has anyone replaced their water heater with a tankless instant recovery/ Second has anyone just replaced it with an electric heater from lowes or home depot? I really don't see much difference.
__________________

__________________
Mike
mrt214 is offline   Reply With Quote
Old 10-02-2018, 11:55 AM   #2
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 8,900
Default

Tankless units relay on a high heat source to heat the water on demand. This is not conducive to a marine application. If in the engine compartment it must be ignition protected.
__________________

__________________
1997 2400 SCR
5.7 Vortec / Bravo 2

Mike
mmwjr is offline   Reply With Quote
Old 10-02-2018, 02:05 PM   #3
Moderator

 
Join Date: Apr 2008
Posts: 5,157
Default

Marine hot water heaters can come with the option to be heated off of the heat exchanger as well as electric. It's also a bit more marinized and ignition protected.
shrew is offline   Reply With Quote
Old 10-03-2018, 10:45 PM   #4
Admiral
 
Phillbo's Avatar
 
Join Date: Mar 2012
Location: Lake Powell
Posts: 1,552
Default

If the water is hot it does not need to be heated. The device is a Water Heater, not a Hot Water Heater

Also love it when people call Fenders a Bumper.
Phillbo is offline   Reply With Quote
Old 10-04-2018, 12:53 PM   #5
Moderator

 
Join Date: Apr 2008
Posts: 5,157
Default

LOL!!! Very true.
shrew is offline   Reply With Quote
Old 10-09-2018, 01:37 AM   #6
Lt. Commander
 
mrt214's Avatar
 
Join Date: May 2013
Location: Pittsburgh,Pa
Posts: 173
Default

Why would it need to be ignition protected? Electric does not ignite like gas or propane.
__________________
Mike
mrt214 is offline   Reply With Quote
Old 10-09-2018, 02:41 AM   #7
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 8,900
Default

Quote:
Originally Posted by mrt214 View Post
Why would it need to be ignition protected? Electric does not ignite like gas or propane.
Electric thermostat can cause a spark which can ignite any potential gas fumes. This mainly applies to items that are installed in the engine compartment which is where my water heater is. Same is true for the engines starter and alternator, these have special features that auto ones don’t.
__________________
1997 2400 SCR
5.7 Vortec / Bravo 2

Mike
mmwjr is offline   Reply With Quote
Old 10-09-2018, 02:14 PM   #8
Moderator

 
Join Date: Apr 2008
Posts: 5,157
Default

Quote:
Originally Posted by mmwjr View Post
Same is true for the engines starter and alternator, these have special features that auto ones donít.
And Battery chargers, and bilge pumps, and A/C pumps......
shrew is offline   Reply With Quote
Old 10-09-2018, 03:55 PM   #9
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 8,900
Default

Quote:
Originally Posted by shrew View Post
And Battery chargers, and bilge pumps, and A/C pumps......
And drive trim pumps, trim tab pumps, ...

anything that can produce a spark.
__________________
1997 2400 SCR
5.7 Vortec / Bravo 2

Mike
mmwjr is offline   Reply With Quote
Old 07-15-2021, 12:51 PM   #10
Ensign
 
Join Date: Oct 2020
Posts: 11
Default

You can let it run by AC power or marine engine heat. This equipment only needs minimal power as any excess can disrupt ignition. When it comes to a propane-powered heater, it has a quick recovery rate even when the temperature is low. You’ll also save on running costs. Some think that electric-powered ones tend to last longer. Nevertheless, propane-powered heaters can keep up.
RobertHan is offline   Reply With Quote
Old 07-15-2021, 03:29 PM   #11
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 8,900
Default

Quote:
Originally Posted by RobertHan View Post
You can let it run by AC power or marine engine heat. This equipment only needs minimal power as any excess can disrupt ignition. When it comes to a propane-powered heater, it has a quick recovery rate even when the temperature is low. Youíll also save on running costs. Some think that electric-powered ones tend to last longer. Nevertheless, propane-powered heaters can keep up.
A propane tank must be stored on a well ventilated compartment on deck, not in the engine compartment. Unless you use a lot of hot water I donít see any big savings. IMO doesnít make sense on a boat under 35í.
__________________
1997 2400 SCR
5.7 Vortec / Bravo 2

Mike
mmwjr is offline   Reply With Quote
Old 07-19-2021, 03:18 PM   #12
Moderator

 
Join Date: Apr 2008
Posts: 5,157
Default

Propane water heaters and fridges are not ABYC compliant. I would strongly urge anyone to NOT install either of these devices on a boat.
__________________

shrew is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 06:08 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.