goducks10
There
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I have a 10 gal WH in my TT and have never ran out of how water. Just the 2 of us and the DW usually goes 1st. She spends more time after the shower in the bathroom than I do so that gives the WH a little more time to recover.
I also think some brands are better than others.
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jpmyers
Texas
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That's another issue I have with this tankless water heater! It takes quite a while to get your water temperature dialed in at the shower head due to how long it takes to get hot water. So when you do the whole Navy shower routine, you have that same wait for hot water all over again when you are needing to rinse off. The tendency then is to leave it running at your temp. But that wastes a lot of water and gas.
Jerry & Pamela
2020 Highland Ridge Silverstar ST324RLS-38' TT
2020 Silverado 1500 w/Max Haul package & Airlift bags.
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goducks10
There
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jpmyers wrote:That's another issue I have with this tankless water heater! It takes quite a while to get your water temperature dialed in at the shower head due to how long it takes to get hot water. So when you do the whole Navy shower routine, you have that same wait for hot water all over again when you are needing to rinse off. The tendency then is to leave it running at your temp. But that wastes a lot of water and gas.
Thats why IMO a https://www.showermiser.com/
should be in all RV's. No wasted water.
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Grit dog
Black Diamond, WA
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Great if you’re always on fhu and using it like a house.
Huge waste of water if you’re actually camping with out fhu or at least a water hookup and the ability to drain gray tank as needed (IE on the ground).
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
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deltabravo
Spokane, WA
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Good info in these three videos:
RV Tankless Water Heater. Should I Get One? (Pros vs Cons)
The Problem With RV Tankless Water Heaters.
Best RV Tankless Water Heater!
2009 Silverado 3500HD Dually, D/A, CCLB 4x4 (bought new 8/30/09)
2018 Arctic Fox 992 with an Onan 2500i "quiet" model generator
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valhalla360
No paticular place.
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We had a propane model on our boat. It was always a pain. You had to fiddle with the hot/cold for a good 30 seconds to get a temp you liked...all while wasting water.
If you made any adjustment to the flow rate, you would get ice cold or scalding hot and you had to readjust again. So no shutting it off while lathering.
Most RV tankless are electric. Now you run into the problem of providing enough wattage to heat water.
- If you camp where the 24hr average temp is 80F and you are happy with 100F water, it's marginal but might work.
- If you camp spring/fall where the onboard tank might have water at 50F and you want 110F water at the shower head, not nearly enough wattage.
A 30amp@120v trailer has a max continuous supply of 2.8kw (it's not recommended to operate higher than 80% of the ratings for long term loads). A 50amp@240v, is good for about 9.4kw.
This is different from a house where you can run a dedicated 240v circuit.
Example (not recommendation) from a household tankless heater website:
Performance Tankless Electric 18kW; RTEX-18
Push-button ON/OFF control with LED temperature display
18kW Model Flow Rate up to 2.86GPM
Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV
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deltabravo
Spokane, WA
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valhalla360 wrote:Most RV tankless are electric.
Who makes an electric tankless RV water heater. I can't find one.
The Girard tankless is propane.
Furrion tankless is propane
Rec Pro / Fogatti is propane
Camplux is propane
Lippert is propane
I've yet to find an RV tankless water that runs on anything other than propane.
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Lantley
Ellicott City, Maryland
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Thermoguy wrote:jpmyers wrote:My question at this point would be; what is the largest Propane/Electric water heater can I replace this new tankless water heater with? The original was a6 gallon unit and I do not believe there is any space available, after modifications to squeeze in a larger water heater.
It seems like your real questions is if a 6 gal water heater is enough hot water for your needs. With a family of 3 that often takes showers back to back, we have not found any issues with enough hot water. When camping without hookups we always take navy showers so we don't use much hot water.
My thought is a 6 gallon water heater may not be enough. My prior rig had a 6 gallon water heater and occasionally it would not keep up if 2 adults and 2 kids took back to back showers.
My current rig has a 10 gallon lp/electric heater and we never run out of hot water and we do not take navy showers.
For me a 10 gallon RV water heater is the ultimate. I see no need for tankless heater in an RV.
What is the point of having unlimited hot water if you don't have unlimited grey water capacity and unlimited fresh water capacity.
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hayesjenn71
Utah
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I currently have a 6 gl water heater. It doesn't make enough hot water to do dishes and for 2 people to shower. I live in my trailer year round and am hooked to city water. I would like to install a bigger water heater, but I don't want to have to cut anmy holes into the side of my trailer.
* This post was
edited 03/04/23 05:12am by hayesjenn71 *
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Bobbo
Wherever I park
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We have a 6 gallon water heater, and as long as we have both the propane AND the electric turned on and heating, we don't run out of water. Yes, you CAN have both turned on at the same time. We do, however, take navy showers.
Bobbo and Lin
2017 F-150 XLT 4x4 SuperCab w/Max Tow Package 3.5l EcoBoost V6
2017 Airstream Flying Cloud 23FB
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