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offgrid
Senior Member
Joined: 23 Jul 2018
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Posts: 5290
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Topic: Tankless propane hot water heaters Posted: 09 Feb 2019 at 3:47am |
The RV tankless water heaters fit in the same space as the tank ones.
You do save the 6 gallons of water. As we all know, the only way to get that 6 gallons out of the tank is to pull the anode. Otherwise, you're just ferrying around 6 gallons of dead water weight you can't use. No water tank, no 50 lbs of dead weight. If you leave 6 gal out of the fresh water tank you only have 24 gal water available, not 30. That's probably fine if you don't boondock.
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold
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GlueGuy
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Joined: 15 May 2017
Location: N. California
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Posts: 2629
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Posted: 08 Feb 2019 at 11:41pm |
Well, it certainly doesn't seem like it would save space. Maybe a few pounds, but I'm with lostagain. I think all you really need to do (if you want to save the 48 lb water weight) is to not fill the WH before you leave. Sure you lose 6 gallons, but it wouldn't be there with the tankless either.
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bp
2017 R-Pod 179 Hood River
2015 Ford F150 SuperCrew 4WD 3.5L Ecoboost
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offgrid
Senior Member
Joined: 23 Jul 2018
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Posts: 5290
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Posted: 08 Feb 2019 at 7:33pm |
Changing to tankless on a small RV makes a lot more sense as a weight saving measure than as a way to use up more water taking showers.
If you stick with Suburban their tankless unit weighs 36 lbs and the 6 gallon one weighs 32 lbs empty. 6 gal water weighs 50 lbs so you'd save 46 lbs with the changeover to tankless.
If that's worth it or not is going to depend on how critical it is to save that weight on an individual rig. I could see doing it if I had to replace my water heater anyway. it's a personal decision, no right or wrong to it one way or the other.
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold
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mcarter
podders Helping podders - pHp
Joined: 07 Apr 2016
Location: Greenbrier, TN
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Posts: 3419
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Posted: 08 Feb 2019 at 6:17pm |
Motor 7,
I'm on the side of not seeing a benefit to this. Not to dissuade you, but not an item I can see as a priority. Let us know how your idea turns out. Interested, just not excited.
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Mike Carter
2015 178
" I had the right to remain silent, I just didn't have the ability."
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lostagain
Senior Member
Joined: 06 Sep 2016
Location: Quaker Hill, CT
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Posts: 2587
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Posted: 08 Feb 2019 at 5:39pm |
It's hardly worth the effort. That extra 6 gallons of water in the grand scheme of things isn't going to make that much difference unless you're already loaded to the max. Simpler to just put in 6 fewer gallons in your fresh water tank. What's the weight of a tankless heater with all the ancillary piping and heat exchanger? I suspect, but really don't know, that it is not significantly different from the Suburban heater you have.
I asked my sister-in-law if she'd mind if I took hers off the wall to weigh it. She looked at me like I was nuts and started laughing at me saying: "En tus sueƱos." So, I dropped the idea.
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Never leave footprints behind.
Fred & Maria Kearney
Sonoma 167RB
Our Pod 172
2019 Ford F-150 4x4 2.7 EcoBoost
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Motor7
Senior Member
Joined: 09 Jan 2019
Location: E. TN
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Posted: 08 Feb 2019 at 5:13pm |
Originally posted by GlueGuy
I know we've discussed it six ways from Sunday, but can I get a show of hands when the stock WH has run out of hot water for lack of capacity? |
I think you might be missing my point. It's more about saving space and weight, not for shower time longevity................
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2016 R-Pod 176T
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offgrid
Senior Member
Joined: 23 Jul 2018
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Posts: 5290
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Posted: 08 Feb 2019 at 3:17pm |
Never ran out, not even close.
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold
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furpod
Moderator Group - pHp
Joined: 25 Jul 2011
Location: Central KY
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Posts: 6128
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Posted: 08 Feb 2019 at 3:11pm |
Originally posted by GlueGuy
I know we've discussed it six ways from Sunday, but can I get a show of hands when the stock WH has run out of hot water for lack of capacity? |
When on FHU's, we have.. It takes a while, and I am not sure it can be done unless you just leave the water on the whole time. But we don't. Almost always have the WH on both elec and gas..
Heck, we don't usually do that at home. (leave the water running the whole time) We are on a septic tank, I try to keep our water use down a bit when we can.
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lostagain
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Joined: 06 Sep 2016
Location: Quaker Hill, CT
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Posted: 08 Feb 2019 at 2:34pm |
No Hollywood showers in the Pod. Only mariner's showers. Get a little wet, wash the essentials, quickly rinse. Use about couple gallons of water. Hair washing takes about half of that (short hair, long is way more complicated). When I had my Newport 30 I uses one of those portable shower bags that held <5 gal. It was plenty for two showers, with no mixing in cold.
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Never leave footprints behind.
Fred & Maria Kearney
Sonoma 167RB
Our Pod 172
2019 Ford F-150 4x4 2.7 EcoBoost
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GlueGuy
Senior Member
Joined: 15 May 2017
Location: N. California
Online Status: Offline
Posts: 2629
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Posted: 08 Feb 2019 at 9:30am |
I know we've discussed it six ways from Sunday, but can I get a show of hands when the stock WH has run out of hot water for lack of capacity?
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bp
2017 R-Pod 179 Hood River
2015 Ford F150 SuperCrew 4WD 3.5L Ecoboost
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