water heater - Fiberglass RV


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Old 02-14-2017, 02:42 PM   #1
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Name: Ronda
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water heater

Has anyone used a tankless water heater? I have been pricing water heaters and im not sure 300 to 500 is in our budget for a new one. If anyone has could you let me know the brand. they have a lot of mixed reviews.
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Old 02-14-2017, 02:52 PM   #2
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I was looking at the tankless water heater in an Oliver trailer at Quartzsite Az this last weekend, and they use a Truma AquaGo. I couldn't find the price on their website, but under discussion of tankless water heaters that can be mounted IN an RV it was mentioned that they typically go for twice the price of a 6 to 10 gallon tank version.
Dave & Paula
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Old 02-14-2017, 07:13 PM   #3
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I bought a Fastair brand digital tankless for about $80 on Ebay 2 years ago and mounted it to the tongue. It works great. You can see photos of it on my thread Our 1971 13' Boler Mods on this site.
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Old 03-10-2017, 04:14 PM   #4
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Old 03-10-2017, 05:10 PM   #5
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The one RedBarron55 posted is the same one I have. I mounted it on the tongue like he did, only his enclosure is a lot nicer than mine, which is just mounted to the tongue with a homemade bracket. It works very well to I might add.
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Old 03-10-2017, 05:26 PM   #6
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What's in the box with front vent next to the water heater, in back of tank?
Is it AC? Where did you move the battery?

Mark
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Old 03-10-2017, 06:19 PM   #7
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The tan box is the Heat Pump condenser part of a mini-split.
For weight and balance the battery is under the driver's side bunk behind the wheel . It is vented to the outside

I modified the cell caps and tied them into a manifold to the outside after this picture was taken
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Old 03-11-2017, 09:37 AM   #8
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heat pump

Thanks.

Mark
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Old 03-16-2017, 04:46 AM   #9
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if you want to do the work, and your gas valve is in good shape, you can always just change the tank, I bought a new tank on ebay, with electrical heating unit as well for $178.00
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Old 04-08-2017, 08:37 AM   #10
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Electric on-demand water heater

Has anyone installed an ELECTRIC on-demand hot water heater in their RV? Don't mind spending money for a nice, long, hot shower. I camp primarily at campgrounds having electric and water hook-ups.
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Old 04-08-2017, 08:59 AM   #11
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I believe that the power draw would excessive for showers
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Old 04-08-2017, 09:52 AM   #12
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I've installed electric on demand water heaters in residential , commercial and industrial applications . In order to get HOT water at a sufficient flow rate and obtain the necessary temperature rise for a shower you would need a large unit.
The ones we installed for showers drew 30 to 60 amps at 240 VAC. Since your trailer electrical service is only 30 amps at 120 VAC , there is a problem .
We often installed tempering tanks to prewarm the water going into the on demand water heater. Ground water temperatures are often in the 40 to 50 deg F range
Check the flow rate and temperature rise of the heater you want to use. May work well for sink use but not for showering.
A propane on demand water heater may be a better solution because the BTU imput is much higher than an electric unit.
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Old 04-08-2017, 10:00 AM   #13
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The LP gas units are cheap and have plenty of capacity for showers as long as you want.
It is a little tricky to get the temperature right to start.
The Fastar is pretty adjustable with a selection for winter and summer and flow and temperature.
The problem is more that you will have more capacity than you need and to get the flow to turn on the heater you will have to adjust for the temp you want with just the hot valve and mixing hot and cold is harder until you get used to it.
If there were a good way to adjust from the inside it would be perfect.
I couldn't figure out a good way to mount the unit except on the tongue, but you might be brighter than I am.
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Old 04-08-2017, 10:24 AM   #14
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Thanks, Steve Dunham. After doing additional research it does seem impossible. Perhaps technology will advance! I do already have natural gas fired on demand in my home and absolutely love it. However, I won't go that route for trailer as it is all electric and I have no plans on adding propane. Thanks for the great explanation.
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