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Old 05-21-2014, 06:49 AM   #1
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Yep, I don't know what I am doing

Good morning everyone. I have a water heater problem. The ceramic around the ignitor is cracked again. The wires in the compartment are just about toast. So I want to replace the orginal 6 gal waterheater. I am thinking of using a tankless one. Now I will admit that I don't really know how to use this forum very well. I know that there is a ton of knowledge available here. I did a search, but I guess I didn't do it properly. I thought I searched in the Class C forum for info on TANKLESS WATERHEATERS, nothing was found. I am thinking that there is something here on the heaters. I just don't know how to search for it. And that is my fault for not knowing how to use the resourses of this forum. If someone would tell how to do a search, I would be very happy. I have a month before the next long weekend trip to replace the heater, so I have time.
Any info, thoughts, pro or con on tankless waterheaters, brands, etc.
Thanks
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Bill
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Old 05-21-2014, 07:02 AM   #2
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The search you really want to perform is "RV Tankless Water heaters" and you do get a very decent return. RV Tankless Water Heater from Girard - PPL Motor Homes
I am all for tankless heaters....I do not have one in my rig or home but have bumped shoulders with several RVers that are using them and they are said to cut fuel costs (propane) and offer very good heating on demand (you do not run out of hot water like we do with the tank.
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Old 05-21-2014, 07:04 AM   #3
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Several problems with residential tankless water heaters in an RV application.
1. Power requirements exceed your 30 amp limit on your class C. A gas unit would probably drain your tank pretty quick.
2. Size. Not sure how you would fit one of these units in to the available space.
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Old 05-21-2014, 07:18 AM   #4
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Several problems with residential tankless water heaters in an RV application.
1. Power requirements exceed your 30 amp limit on your class C. A gas unit would probably drain your tank pretty quick.
2. Size. Not sure how you would fit one of these units in to the available space.
SEE the PPL site mentioned above. It's an RV tankless and replaces (same size) as the 6 or 10 gal. current WH...It's gas so uses only a small amount of 12 VDC for control panel and an estimated 60% less gas....
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Old 05-21-2014, 07:33 AM   #5
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Watched the video. If you gave me a tankless I would sell it. *Up to* 60 deg heating over ambient is not sufficient increase around here much of the year. I'd put in a new like for like tank heater. I would be tempted to upgrade to an gas/electric unit. YMMV.
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Old 05-21-2014, 08:26 AM   #6
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Thanks Gocoffeer for the info on the search, and the link to PPL's video.
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Old 05-21-2014, 01:39 PM   #7
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Bill.. you are welcome....Let us know if you go that direction and what you personally think of the heater after you install it. I am all for saving that hard earned $ when it comes to a long term investment that you get to use everyday.
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Old 05-21-2014, 04:38 PM   #8
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Hi Gocoffeer, well I went witha a Suburban 16 gal gas and electric water heater. After talking to the lady in the parts dept. at PPL Motors. They have a lot of them returned because the heaters just can't produce enough hot water. Well I want hot water. I have the space for the larger heater. so I went for it. The lack of enough hot water from a tank less heater, I have read a number of articles about that. NOPE, gotta have hot water. I think 16 gallons will do the trick. After I get the tank up to temp, I can turn off the gas and just run on the electric. So saving those hard earned bucks. The model I ordered is SW16DE, Direct Spark, also the switch and the door. With this unit I know I will have lots of hot water. Also it was on sale.
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Old 05-21-2014, 04:46 PM   #9
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If you want an RV tankless water heater, look at this one RV-550 – Tankless Water Heater for RVs and Trailers - PrecisionTemp
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Old 05-22-2014, 06:40 AM   #10
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Thanks for letting me know what you went with.... I have the old traditional gas model and my travels and use of the RV are not aligned with camping or fulltiming. I use my RV as a cycling lockerroom so to speak. The wife and I got older and wanted a sport we both enjoyed so back into bicycling. We converted our RV into something that we use to haul bikes...take showers ...use on weekend trips or as a pedal to point for overnite rides. It has made biking so much more fun. Hotwater is important to us too....Im trying to determine if I can solarize that portion of this RV and capture some less expensive hot water....we shall see.
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Old 05-22-2014, 06:52 AM   #11
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Watched the video. If you gave me a tankless I would sell it. *Up to* 60 deg heating over ambient is not sufficient increase around here much of the year. I'd put in a new like for like tank heater. I would be tempted to upgrade to an gas/electric unit. YMMV.

If input water supply was 40 degrees a 60 degree rise would make it 100 degrees. For a shower if you didn't mix any cold water in, just turned on hot water only, this would seem to be sufficient ? Right ? And since it's tankless, the stream of 100 degree water would be unlimited.
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Old 05-22-2014, 07:19 AM   #12
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Quote:
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If input water supply was 40 degrees a 60 degree rise would make it 100 degrees. For a shower if you didn't mix any cold water in, just turned on hot water only, this would seem to be sufficient ? Right ? And since it's tankless, the stream of 100 degree water would be unlimited.
I do not think 100 degrees F would be very comfortable as body temp is 98.6F. No steam at that temp F. Nothermark is from New York.
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Old 05-22-2014, 08:28 AM   #13
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Good morning Gocoffeer, I know what you mean having a nice shower after a good ride. I am a cyclist also. I ride a TerraTrike Rover 8, recumbent. I ride a trike due to vision lose. Kinda feel uneasy on a 2 wheeler now days.
Love my Rover 8. Like to take if with me where ever I go. I ride mostly around town, I don't drive anymore, due to the vision issue. I get in a lot of miles here in town though. LOVE TO RIDE.
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Old 05-22-2014, 08:36 AM   #14
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I do not think 100 degrees F would be very comfortable as body temp is 98.6F. No steam at that temp F. Nothermark is from New York.
Paul

I'm certainly not advocating for tankless water heaters, but a commercial hot tub operates generally at temps no hotter than 104. Also, input water temps are more likely to be around 50 degrees or greater due to water lines being underground. Will it be limited in really cold weather? Yes, but you are also limited with a conventional 6-10 gal LP heater. The AquaHot models, which are highly regarded, are rated at 1.5 gal per minute at 55 degrees above input water.


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