Portable On-demand Water Heater! - Page 2 - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-24-2015, 02:02 PM   #15
Senior Member
 
Name: Wayne & Barbara
Trailer: Parkliner
Iowa
Posts: 621
[QUOTE=Darral T.;536887]Wayne, you've lost me on this one. Where do you get 30A??? I put a HottRod in my Atwood 6 gal onboard water heater on my Scamp. It draws apx 4A. My wife has never complained running out of hot water when she's taking a shower with this add-on unit. We love it. The only time we'll use propane now is when we're off the grid.

OK, I was looking at tankless heaters for a church washroom. Obviously the more heat you want the more energy it takes. 4 amps will heat a small volume of water.
__________________

__________________
Wayne Collins is offline   Reply With Quote
Old 07-24-2015, 02:11 PM   #16
Senior Member
 
rbryan's Avatar
 
Name: Robert
Trailer: 2015 Escape 19 "Past Tents" 2015 F150 Lariat Ecoboost Crew Cab
Texas
Posts: 902
Registry
Portable On-demand Water Heater!

Quote:
Originally Posted by Bob Miller View Post
That price difference is partly because the Atwood/Suburban units (which you can buy for about $500 if you shop) are designed for the full time hot water needs of a 3 bedroom/2 bath diesel pusher motorhome.

These little ones are not designed for high volume use nor are they designed to use in an RV, in fact some are specifically labeled that they are not to be used on RV's. They are sorta the "Cheapy" way to get bit of hot water.

Yeah, I realize that Bob, but I still think they might be a good value for "supplementing" your hot water needs - particularly with using an outside shower tent. I might never use my inside shower.


Sent from my iPhone using Fiberglass RV
__________________

__________________
"You can't buy happiness, but you can buy an RV. And that is pretty close."
rbryan is online now   Reply With Quote
Old 07-24-2015, 02:11 PM   #17
Senior Member
 
Timber Wolf's Avatar
 
Name: Tim
Trailer: '88 Scamp 16, layout 4
North Florida
Posts: 1,440
They use one of those at the Humane Society "Dog Wash" I take my pooch to once a month. They do aim the nozzle away and run a little water out each time they use water I assume because the first blast may be hotter or something? I have no first-hand experience myself, but have heard no complaints from the dog.

I would like to have one mounted on a hand truck with space below for the propane bottle. I thought this up and then found on the internet there is a company selling them like this already ($$$$$$$$$$$$). I would carry it in the back of my pickup truck and take it out and put it alongside the trailer when I wanted to use it. I would tap into the water line somewhere convenient along the street side of the trailer to make a short run to the shower.

Yes, I know this is not the most convenient way to get hot water. But I do not like the current heater, nor its’ weight, use of space, or location. I figure when I set up for hot water will be when I am boondocking for extended periods anyway and it will worth the trouble. And it will be easier to access hot water outside for an external shower (where I can actually stand up) or washing dishes outside and stuff. You know, like in the outdoors.
__________________
Timber Wolf is offline   Reply With Quote
Old 07-24-2015, 02:23 PM   #18
Senior Member
 
Bob Miller's Avatar
 
Name: Bob
Trailer: 1973 Hunter Compact II
California
Posts: 7,912
Water Heaters

Quote:
Originally Posted by rbryan View Post
Yeah, I realize that Bob, but I still think they might be a good value for "supplementing" your hot water needs - particularly with using an outside shower tent. I might never use my inside shower.


Sent from my iPhone using Fiberglass RV
We have an outside shower (only) and a 4 gallon water heater on our Hunter and have yet to run out of hot water for two showers. We do allow about a 15 minute warm up while getting ready, but we are good to go after that.

Actually the 4 gallon RV water heaters heat up and recover pretty darn fast. Next time out we will try to run it out of hot water
__________________
Bob Miller is offline   Reply With Quote
Old 07-24-2015, 02:38 PM   #19
Senior Member
 
David Tilston's Avatar
 
Name: Dave W
Trailer: Trillium 4500 - 1977, 1978 (2), 1300 - 1977, 1973, and a 1972
Alberta
Posts: 5,317
Registry
I would imagine that if you run at a low enough flow rate, you would have what amounted to an on demand water heater.

BTW: I have never seen a 4 gallon water heater. Could you please post the make and model number?
__________________
David Tilston is online now   Reply With Quote
Old 07-25-2015, 01:45 AM   #20
Senior Member
 
Ellpea in CA's Avatar
 
Name: Ellpea
Trailer: Bigfoot
California
Posts: 870
Registry
I wondered about dry camping with one of the on-demand heaters I mentioned. But I think I understand that they require a certain amount of pressure to activate the heater. The burner goes out after a certain period of non-use, and activates again (via batteries!) when there's a demand for water. So it's likely that it wouldn't work with water from the holding tank... unless that's pressurized?

The specs also state that these are NOT for use inside RV's or indoors at all, but there are quite a few customer reviews discussing just that kind of use. I'm not suggesting anyone *should* use one of these indoors, but also suspect the company mainly recommends against indoor use to avoid liability.

LP
__________________
Ellpea in CA is offline   Reply With Quote
Old 07-25-2015, 06:27 AM   #21
Raz
Senior Member
 
Raz's Avatar
 
Name: Raz
Trailer: Trillium 2010
Vermont
Posts: 4,061
Twenty minute shut off timer. Do you have teenagers?
__________________
Raz is online now   Reply With Quote
Old 07-25-2015, 07:08 AM   #22
Senior Member
 
Name: JD
Trailer: Scamp 16 Modified (BIGLY)
Florida
Posts: 1,045
Thes small water heaters are the way most of the world gets hot water for domestic use assuming that they have running water.
I mounted mine on that hand truck with a LP tank you talked about to test it.
Works great!
I am looking for a good way to mount it on my trailer to protect it and have it close to the point of use.
My bath and kitchen is in the front so I am looking into welding brackets onto the tongue with all of the rest of the stuff living up there.
I am also looking into the possibility of installing it inside since it does have a vent for the output fumes. If this is done then combustion air needs to be brought in as well.
So many options and "opportunities".
__________________
redbarron55 is offline   Reply With Quote
Old 07-25-2015, 07:41 AM   #23
Senior Member
 
Bob Miller's Avatar
 
Name: Bob
Trailer: 1973 Hunter Compact II
California
Posts: 7,912
There are specific requirements for operating gas burning water heaters and "Boilers" inside of inhabited spaces.


These inexpensive devices, for the most part , are not designed to be used as such. Between the heat and the carbon monoxide they generate, they could become dangerous to "Plants and other living things".


There are a few with provision for a flue/vent but again, for the most part, they are designed for exterior use only. That said, there is never a shortage of peeps that consider themselves smarter than all of the design & safety engineers on the planet and do whatever they want.


Over the past few years there has been untold talk about these, but very little reported action.
__________________
Bob Miller is offline   Reply With Quote
Old 07-25-2015, 04:44 PM   #24
Senior Member
 
Bob Miller's Avatar
 
Name: Bob
Trailer: 1973 Hunter Compact II
California
Posts: 7,912
4 Gallon Water Heater

Quote:
Originally Posted by David Tilston View Post
I would imagine that if you run at a low enough flow rate, you would have what amounted to an on demand water heater.

BTW: I have never seen a 4 gallon water heater. Could you please post the make and model number?
No Problem (except I forgot to answer your question)

It is a Suburban SW4D, electric start, 4 gallon water heater. At one time there was also a 3 gallon version that was made to use in VW campers. I was sold two of these ($199.ea) by the VW parts house "The Bus Depot". Apparently they bought out the end of a run from Suburban, but my RV supplier has occasionally seen them available.

I have seen one 3 gallon (SW3D?) and the seller wanted $500 because they were for VW campers and were "rare".

In todays market $199 each is almost GTWH (Grand Theft Water Heater)
__________________
Bob Miller is offline   Reply With Quote
Old 07-27-2015, 01:55 AM   #25
Senior Member
 
Ellpea in CA's Avatar
 
Name: Ellpea
Trailer: Bigfoot
California
Posts: 870
Registry
Quote:
Originally Posted by P. Raz View Post
Twenty minute shut off timer. Do you have teenagers?
Not any more!
__________________
Ellpea in CA
1988 13.5' Lil Bigfoot
2002 Volvo V70 (turbocharged)
5 cylinders, 5 speed auto transmission
Ellpea in CA is offline   Reply With Quote
Old 08-06-2015, 03:41 PM   #26
Senior Member
 
Ellpea in CA's Avatar
 
Name: Ellpea
Trailer: Bigfoot
California
Posts: 870
Registry
I have a question about using one of these. It looks like it will only work with water under pressure, is that correct?

And when you are dry camping, for instance, and using your water tank, you only have pressure if you have one of those metal ones? (My Kencraft had a big metal tank, and then a little water pump)

Lil Bigfoot just has a big plastic tank... no pressure. Any other ideas for getting warm water (except those Coleman black bags... I do have one of those)?
__________________
Ellpea in CA
1988 13.5' Lil Bigfoot
2002 Volvo V70 (turbocharged)
5 cylinders, 5 speed auto transmission
Ellpea in CA is offline   Reply With Quote
Old 08-06-2015, 04:03 PM   #27
Senior Member
 
Bob Miller's Avatar
 
Name: Bob
Trailer: 1973 Hunter Compact II
California
Posts: 7,912
IF you have a pressure demand pump, meaning turning the water faucet on/off controls the pump running, you may be able to get enough water pressure by plumbing in an outside water port and an outside LP tap to power it. (Most of these are not designed for inside use.) Search the topic, there are 100's of posts on this topic and only 1 or 2 actual users.


I don't think this is an answer for your camping style. If you want hot water for an outside shower, look up the ZODI camp shower system. I have one and it works great with the pop-up trailer in our fleet. It is also possible to install a 4 gallon water heater under the left bed/dinette seat of the Lil'BigFoot., see my earlier pics.


If it's just for washing up and dishes, a kettle works great, did that for years. I even used two at a time. LP gas lasts a Loooong time when using the stove.
__________________

__________________
Bob Miller is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Difference between automatic demand and switched pumps GordM Problem Solving | Owners Helping Owners 4 04-12-2011 05:52 AM
Coleman Hot Water On Demand mcbrew General Chat 7 11-03-2010 12:39 PM
On Demand Water Heaters melissab General Chat 10 09-23-2010 12:53 AM
demand type water heaters Valerie B. Problem Solving | Owners Helping Owners 22 09-19-2009 04:16 PM
Mr. Heater Buddy Portable Propane Heater Legacy Posts Problem Solving | Owners Helping Owners 16 08-03-2003 01:01 PM

» Trailer Showcase

Escape

Joni F

Red Rover

Winnie
» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:24 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.