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08-04-2019, 07:18 PM
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#1
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New Member
Join Date: Aug 2019
Location: Enumclaw
Posts: 4
M.O.C. #24618
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Inline water heater?
Has anyone replaced their tank style with an inline or am I outta my mind for even thinking it would be a good idea? I'm new to the world of rv's so I really don't know. I just thought it would be a good upgrade. I'd love some input!
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08-04-2019, 07:41 PM
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#2
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Montana Master
Join Date: Jan 2018
Location: Austin
Posts: 2,415
M.O.C. #21044
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Water heater ?
Do you mean “on demand” water heater?
I am not familiar with “in line” water heater.
__________________
MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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08-04-2019, 07:49 PM
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#3
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New Member
Join Date: Aug 2019
Location: Enumclaw
Posts: 4
M.O.C. #24618
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For some reason it won't let me just link this...
https://www.homedepot.com/p/Rheem-Performance-36-kw-Self-Modulating-6-GPM-Electric-Tankless-Water-Heater-RETEX-36/300800822
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08-04-2019, 08:11 PM
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#4
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Montana Fan
Join Date: Jan 2018
Location: Boone
Posts: 311
M.O.C. #21011
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Any kind of inline water heater that would be useful, is of course 240 volts. Or the derated ones are 208v. Regardless, you do not have this type of power output in your FW. And if you did, you would be way over 50 amps. Raheem does offer a 120v model, but what you have now offers more hot water output than it does. A propane in-line water heater is what you would need. And in the RV World, that would be called the On Demand system version. Maybe in short terms, that helps answer your question.
__________________
2018 Montana HC 362RD
2016 Chevrolet 3500 Duramax HD SRW
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08-04-2019, 08:11 PM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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We had three rigs on our block, last winter, who all had them from the factory. We had some cold nights and the best they could do was warm water. On the other hand all the heaters were supplied by the low bidder.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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08-04-2019, 08:12 PM
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#6
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New Member
Join Date: Aug 2019
Location: Enumclaw
Posts: 4
M.O.C. #24618
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Thank you! That's exactly what I needed to know!
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08-04-2019, 10:22 PM
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#7
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Montana Master
Join Date: Nov 2018
Location: Menifee
Posts: 1,109
M.O.C. #22986
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Our in demand system works great when taking a bath, when taking a shower it’s great until i turn off the flow and turn it back on again. It’s getting better instead of the cold sandwich I’m getting a warmish sandwich lol
__________________
2018 3920fb 2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover. 50gal titan in bed transfer tank. Onan 6500 lp genset installed by me ! Had: 2 HF 3500 Inverters with Parallel Kit
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08-05-2019, 02:02 AM
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#8
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Seasoned Camper
Join Date: May 2019
Location: La Center
Posts: 53
M.O.C. #24001
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Had a Girard Gen 3 on demand tankless water heater in my travel trailer. It was nice in that you could set the temperature with a digital controller and forget it. And you really didn't run out of hot water even in cold weather with that particular unit. Winterizing was a breeze because there was no tank to drain. The biggest drawbacks were that it only operated on propane, it was loud, and the only reason I had the Gen 3 was because the Gen 1 that the trailer came with failed on me. Otherwise, I liked it a lot.
That said, with the 12 gallon one in my Montana, my wife and I really haven't found ourselves missing the tankless water heater. Plus it's nice not having to use propane if we're plugged in.
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08-05-2019, 05:53 AM
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#9
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Montana Master
Join Date: Aug 2009
Location: Grand Rapids
Posts: 1,896
M.O.C. #9561
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if we want some quick hot water we just turn on gas and electric at the same time...
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08-05-2019, 11:41 AM
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#10
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Montana Fan
Join Date: May 2006
Location: San Antonio
Posts: 429
M.O.C. #5757
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Quote:
Originally Posted by mazboy
if we want some quick hot water we just turn on gas and electric at the same time...
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Excuse my ignorance but you can run the water heater on propane and electric at the same time? I thought that if you turned on the propane for the water heater that the electric function turned off?
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08-05-2019, 01:00 PM
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#11
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Montana Master
Join Date: Jun 2017
Location: POINTBLANK
Posts: 1,888
M.O.C. #19944
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it's good to go to run both - keeps us going - I think it's in the specs that it has a high GPM, more than the shower head uses
__________________
RAM 22' DRW 3500 Crew LB 40 gal reserve tank / RETRAX Bed Cover / 2020 373RD HC / IS / MOPEKA Tank Monitor / Furrion Side&Rear Cameras
Slide Toppers / EMS-HW50C / Sailun 85's
3rd AC / Dometic 320
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08-06-2019, 10:47 PM
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#12
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New Member
Join Date: Aug 2019
Location: Okotoks
Posts: 5
M.O.C. #24621
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I've done this and verified both propane and electric stay alive.
__________________
2009 3400RL 650W solar 3000W inverter
2005 F350 CC LB SRW Bulletproofed
Licensed Radio Amateur VE6LK / AI7LK - 73
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08-07-2019, 08:03 AM
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#13
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,165
M.O.C. #6433
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Quote:
Originally Posted by drjjj
Excuse my ignorance but you can run the water heater on propane and electric at the same time? I thought that if you turned on the propane for the water heater that the electric function turned off?
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No problem running on both at the same time. If the weather is warm to hot we typically use the WH on electric only as the incoming water is already fairly warm. But if the weather is oool to cold and the incoming water is cold we run on both electric and propane to get a better hot water recover rate. And have never had a problem running out of hot water.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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08-11-2019, 04:42 PM
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#14
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Montana Fan
Join Date: Apr 2018
Location: Worthington
Posts: 146
M.O.C. #21597
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We run both while showering. Propane has a quicker recovery time. We can do back to back showers and not run out of hot water.
__________________
Bnrc73
2010 Montana 3400 RL
2011 F350 SD SRW 6.7 Diesel
Worthington MN
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08-13-2019, 10:41 PM
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#15
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New Member
Join Date: Jan 2019
Location: Hayden
Posts: 3
M.O.C. #23303
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RV Tankless water heater
Check this out!
https://precisiontemp.com/
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