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Old 03-02-2007, 11:08 PM   #1
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We have a 2003 Alpine Coach and thinking about this hot water tank alternative. Does anyone have any experience with this unit?
http://www.precisiontemp.com/RV-500Page1.html

The FAQ link answers some good questions and it seems like a great idea...but we are just getting ready to be first time full-timers so any feedback is appreciated before we spring for one.

Eusefull
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Old 03-02-2007, 11:08 PM   #2
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We have a 2003 Alpine Coach and thinking about this hot water tank alternative. Does anyone have any experience with this unit?
http://www.precisiontemp.com/RV-500Page1.html

The FAQ link answers some good questions and it seems like a great idea...but we are just getting ready to be first time full-timers so any feedback is appreciated before we spring for one.

Eusefull
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Old 03-03-2007, 02:44 AM   #3
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Hi Eusefull,
I have not used the HWH mentioned in your post. I do have a tankless HWH for my house. It works as advertised and I would make the purchase again.

The unit you are considering is a propane only (no electric) heater. If that is okay with you, I'd say go for it.
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Old 03-03-2007, 07:25 AM   #4
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Hey Gary....thanks for the feedback...it prompted me to go searching for an electric version and found this one:

http://www.tankless-water-heater.com

Smaller footprint, seems to be about the same cost and is all electric. They have lots of testimonials too and I sent an email asking if they know of their product being installed into a motorhome successfully...so when I hear back from them, I will post my findings.

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Old 03-03-2007, 08:05 AM   #5
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Eusefull,
I do not think an electric version would be good for an RV. When on, these HWHs take a lot of power. The link you gave me provides this information.

Their most powerfull HWH (Model 220) takes 100 AMPs. The least powerfull model (Model 110) takes 50 AMPs.

All models must be wired for 220 power. I think any of these HWHs would need special wiring and take all the power a 50 AMP CG site could deliver. At a high level (without details), you would not be able to use the HWH on any site with less than 50 AMP service. When the HWH is on, there would be minimal to no power left for anything else in the RV.

If you decide to do this the propane model might be the only choice.

If you are considering this because you are running out of hot water, please post what HWH you have and the conditions under which you run out of HWH. My signature coach has a 10 gallon HWH. It uses electric and/or propane. When there is just two of us, the electric element serves us nicely. Whe the crew totals 3 femals and 4 males (over 50% of the time) I will have both the electric and propane capability turned on, during high usage times. This arrangement has worked nicely and we have run out of HWH only once. That was because I did not turn on the propane until after most all the HW was used. The HWH recovered quickly with both propane and electric suppling heat.
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Old 03-03-2007, 08:11 AM   #6
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Eusefull:
Hey Gary....thanks for the feedback...it prompted me to go searching for an electric version and found this one:

http://www.tankless-water-heater.com

Smaller footprint, seems to be about the same cost and is all electric. They have lots of testimonials too and I sent an email asking if they know of their product being installed into a motorhome successfully...so when I hear back from them, I will post my findings.

Eusefull </div></BLOCKQUOTE>
Not that I want to throw cold water on your hot water, but I don't believe that you have sufficient RV electrical system capacity for this (the smallest unit is 11 kW, which is 45 amps).
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Old 03-03-2007, 11:09 AM   #7
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I have the 10 gallon Atwood gas/electric model with the engine heat option and usually have hot water from the motor by the time I reach a campground. As soon as I get there I tun on the electric element to maintain the water temperature and for washing hands/dishes. I only turn on the gas burner for showers and can go for months on a 100 lb propane tank. I travel with the wife and two daughters (mid teens and early twenties) but have yet to run out of hot water.

A tankless water heater to save me money would have to be electric and eliminate the use of propane during periods of high demand however it would also have to be a 110 volt model that draws less than 15 amps to be workable in a motorhome. I have yet to see anything that comes close to this that would support a shower.

As long as I am not paying for actual usage of campground electricity what I currently have is still the most reasonable choice for me and many others.
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Old 03-03-2007, 08:27 PM   #8
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by GaryKD:
I have not used the HWH mentioned in your post. I do have a tankless HWH for my house. It works as advertised and I would make the purchase again. </div></BLOCKQUOTE>
We, too, have a propane-fired tankless unit in home, for about a year. It is a wonderful system, and is environmentally sound. However, it's installed cost was about 2.5 times more than the best quality conventional 40-gallon HWH.

I haven't taken time to find out the cost of this unit, but would highly recommend the tankless concept if all of the other issues are satisfactorily answered (i.e., propane vs elec).
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Old 03-04-2007, 05:21 PM   #9
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Euseful,
I dont know what the cost is for the system that your considering and quite frankly I dont know what a HydroHot system would cost to install (I think around $6000) but if the system your considering is anywhere close to that you might want to consider it. We have it on our 07 Alpine and find it wonderful (not to mention it runs on diesel and heats the coach for you too).

Stop by the Alpine Coach forum some time.
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Old 03-04-2007, 07:31 PM   #10
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Thanks all for your feedback and input. You've given me some great advise. We are getting ready to leave in 30 days for our first ever full-timer's endeavor so lots to learn. We look forward to the adventure!

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Old 03-05-2007, 10:21 AM   #11
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Eusefull:
We have a 2003 Alpine Coach and thinking about this hot water tank alternative. Does anyone have any experience with this unit?
http://www.precisiontemp.com/RV-500Page1.html

Eusefull </div></BLOCKQUOTE>Let us know what they are charging for the 10 gallon unit? How far off of $400 (cost of a 10G propane)?

Atwood has an XT Water heater (rvupgradestore.com that overheats the water, then mixes it with cold water on output. This keeps the scald issue down, and provides 50% more hot water. They are around $650.
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