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Old 02-21-2012, 05:33 PM   #15
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I have a question about RV water heaters. I just purchased a 1996 Newmar DP, haven't gotten it yet, so I assume it has a 6 gallon water heater. As I do love my showers and really don't want to have to do a "navy" shower I was wondering if that was adequate hot water for an average shower or not. I was considering having a tankless water heater installed for the shower as I know in many other parts of the world that is actually what is in all homes and is quite a good system. I don't know what the aqua hot is that you are referring to, could someone enlighten me?
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Old 02-21-2012, 06:55 PM   #16
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How do YOU define a "shower"???
6 gal hot = about 12 gal warm and at about 2GPM at the shower head you got 6 minutes of water run time to do your thing....

And then about 30mins or more in order to do it again...

I think the "average" S&B shower in the USA is in the 25-35 gals range.... As a country we are heavy water users....
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Old 03-08-2012, 07:54 AM   #17
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Aqua-Hot recently introduced its new 375-LP that can run on propane.
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Old 03-08-2012, 08:09 AM   #18
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Advantages of Diesel over propane:

1)Diesel from the coach fuel tank allows for MANY more hours of heat than a typical on-board supply of propane

2) Propane systems can create dangerous situations and are prohibited in some driving and storage circumstances

3) Diesel provides more heat by volume than propane. Diesel fuel offers about 140,000 BTU per gallon, compared to 91,000 BTU for propane

4) However, I just paid $2.07 per gallon for propane in Texas. That math doesn't work in favor of diesel. If Diesel hits $5 plus per gallon, this becomes a strong consideration especially for full timers.
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Old 03-08-2012, 08:26 AM   #19
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No soot with propane. Probably no maintenance either. No nozels to change, filters to replace. No diesel smell for the neighbors.
Only trouble is you need a big propane tank.

I'll keep my diesel as long as Roger keeps selling us parts.
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Old 03-08-2012, 09:29 PM   #20
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I love the Aqua Hot when it works, but the number of things that can go wrong are significant. I've had float valve sensor for boiler fluid level go bad, water leaks, fluid pumps fail, and more. The parts are grossly over priced for the quality you are getting. A $130 level sensor should last more than two years. This is great for those selling the parts. I have been able to source most parts that are better and less expensive. Also it is good to see more competition coming into the market, this will make Aqua Hot improve or else.
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Old 03-08-2012, 10:41 PM   #21
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Quote:
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...I have been able to source most parts that are better and less expensive....
Really? Other than the fuel filter would you care to share sources? Pretty much everything else is proprietary to some degree.
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Old 05-18-2012, 05:36 PM   #22
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Ottffss,

If you are still watching this thread, I have replaced the plumbing that was plastic to PEX, replaced the float, dr add in valve, etc. I have not had to do much more than that until now. One of the recirc pumps have gone out to a heating zone. Now the research begins for a replacement. Also the boiler fluid can be purchased for about $7.45 / bottle of concentrate. I have purchased it cheaper in quantity. There are other items that I can't think of right now.
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Old 05-18-2012, 07:43 PM   #23
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Quote:
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Ottffss,

... I have replaced the plumbing that was plastic to PEX, ...
I have replaced most of the plastic to PEX (Quest) fittings. Man are they junk. Teflon tape doesn't work on them, neither does Teflon pipe dope. I just found a new leak in one of the fittings I didn't replace. I'll replace it all now.
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Old 05-19-2012, 02:58 PM   #24
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If it's in the 50s, or warmer, we can use the electric only whether doing dishes or showering. Once the temps drop into the 40s I'll kick on the diesel burner switch. Typically we'll only hear the burner come on during a period of moderate to high demand.

I'm confused by the comment that the pumps run constantly, and are annoying. The only time we hear anything in the coach is when the heat kicks on and you can hear the fans behind the heat exchangers running, at far fewer decibels than any propane furnace we ever had. You can barely hear the burner kick in from the inside, and then only if nothing else is on/running, like the TV or the clothes dryer. From the outside you can clearly hear it kick on, but again its much quieter than any propane furnace we ever had. Those all seemed to 'roar', both inside and out.
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Old 05-20-2012, 02:43 PM   #25
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Quote:
Originally Posted by CapnMorgan

I have replaced most of the plastic to PEX (Quest) fittings. Man are they junk. Teflon tape doesn't work on them, neither does Teflon pipe dope. I just found a new leak in one of the fittings I didn't replace. I'll replace it all now.
Are you dissatisfied with the PEX or the original plastic parts. All of the fittings I have used so far have been brass with the PEX tubing, no problems.
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Old 05-20-2012, 05:15 PM   #26
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JMonroe - We have 5 recirc pumps for the aqua hot. They are not loud. But when we go to bed and we are in a quiet campground they are background noise we do not like. Same as in our close friends Foretravel. Same as in our close friends Scepter. Not loud, but detectable. We solve the issue with feather quilts and sometimes an electric heater. Mostly feather quilts.

The propane central heat on our GMC motor home was not noisy. A very effective and simple heating system. It did make a small amount of noise.
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