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Old 09-16-2012, 05:25 PM   #29
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This was on our 'Must Have' list as we went shopping. Ours is the Hydro Hot, and does a good job of providing our water needs. So far, other then to test it, we have not used the heating option overnight. We run Heat Buddy, as we also have a full size Propane tank.

We do know from talking with other Country Coach, and OTB, owners. That Aqua and Hydro Hot can come in different versions. For example, ours is only a 120V electric element. This covers our needs for day to day living and dish washing. The diesel heater will kick on during the second shower.

We typically leave the diesel off, unless getting ready for a shower. I suspect when we get more usage under out belts, and more 'off the grid' camping, we

will use the diesel feature more duing the night time for heating.

The start up noise, when in the patio, can also be a bit loud. Oftern wondered why they did not put it on the driver side, so it was not blowing into the patio area. The odds are much higher for us to be in a patio, then us being close enought the neighbors pation on the driver side where it might be a problem for them. If we ever find a real problem with unit exhausting into our patio, we'll add the Venturi pipe too. Just has not been an issue yet important enough.

Compared to our old first rig 6 gal W/H, where we woud have to wait between shower two and three when our daughter was traveling with us. We're just as pleased as we expected we would be with the 'all the hot water you could want' feature!

Best of luck on your choice,
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Old 09-16-2012, 05:50 PM   #30
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Originally Posted by patmsp View Post
Well, once you have it you won't regret it. There are other advantages other than continuous hot water. In most coaches it supports 3 zones; living area, bedroom and bathroom. Which means each zone can have each heated differently. In addition, the system is plumbed through the engine. Which means it preheats the engine for easier starts. Conversely, when you are driving down the road the engine heats the aqua-hot giving you heat and hot water. It's a nice feature. The system also has a built in electric hot water heater. So when you are plugged in the diesel portion may never run, depending on your needs.

The system runs off of diesel fuel. You probably carry on board over 100 gallons, so you have a nice reserve. Otherwise you have to make sure your propane is full, and the propane holds a lot less.

We would not be without it, but we also frequent Minnesota.

But, it does require some maintenance.
I would love to have it but Newmar wouldn't install it on our 2002 DSDP. We do have the engine to water heater tie in and the block heater takes care of warming the engine.
The real advantage as I see it is the quiet heat. We can run our heat pumps off shore power or the generator or just run a 1500 watt heater. Our water heater runs off electricity or propane too.
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Old 09-16-2012, 07:00 PM   #31
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Originally Posted by W5DOK View Post
I guess I'm in the minority regarding Aqua-Hot. I absolutely do not like it. The electric heater part will not keep the coach warm in cooler weather and the diesel feature really sucks up the fuel. The unlimited hot water is only if you run the diesel burner. I have it serviced every year and it's working correctly according to the techs.
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That's strange....I have a 2008 Signature and the electric part of my aqua-hot system keeps the coach more than warm enough (70*) in temps as low as 17*. I just flip the (2) 110V switches and I have all of the heat and hot water I can use.

The maintenance is not that big of a deal, after all, you still have to do annual maintenance on your hot water heater and furnace.
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Old 09-16-2012, 08:02 PM   #32
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Where does the heat come from? I don't recall seeing house like base board heater outlets. Is the heat radiated through the floor?
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Old 09-16-2012, 08:17 PM   #33
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We wish we had it!
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Old 09-16-2012, 08:25 PM   #34
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Originally Posted by distaff View Post
Love the hot water, love the heat, love9b] not having to buy propane in addition to diesel.[/b]

Bit more maintenance, but from the perspective of living in the coach it is wonderful.
Yeah because diesel is so much cheaper than PROPANE ----
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Old 09-17-2012, 08:05 AM   #35
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Likely if we really needed the aqua hot I could find out how to use it without the five pumps running all night. The directions to do so might be in one of the books I have stored under our sofa. It took me a year and a half to find the switch for the rear over the road air conditioning. And just recently I found out that the back generator switch is dual purpose. I had been just using it to turn off the genny, but I found out if you held it the other way it would turn it on too. I had been just using the computer.

We don't go to cold places purposely. Our coach has very good insullation. We do like using the aqua hot furnace to bring the motor home up to temperature in the morning, but we just don't go places where lots of heat is needed. As far as hot water goes. The electric seems to offer more heat than my wife and I use in two showers plus doing some dishes. So why do we need to flip on the aqua hot.

My former coach was a very old GMC from 1975. It had central propane heat. Worked very good. Very simple. When we had the coach the central heat was about 30 years old. Did the job and with vastly less expense to keep our aqua hot running.

To me the best solution to needing heat is to only go places where it is little needed.
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Old 09-17-2012, 08:20 AM   #36
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Like most above we love our Hydro Hot. Would never again have a coach without it. We do however spend a fair amount of time in cool to sometimes cold weather. Love the fact that it is so quiet.
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Old 09-17-2012, 09:21 AM   #37
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Originally Posted by Sky_Boss View Post

Where does the heat come from? I don't recall seeing house like base board heater outlets. Is the heat radiated through the floor?
Sky, the heat is delivered to the coach through fan driven vents located throughout the coach. My coach has three in the living area, one in the bathroom, one in the hallway and one in the bedroom. These run off of zone controls so each zone has it's own thermostat function to control temps. I love my AH but I do my own maintenance and replace parts as required with the help of Roger Berke's instructions. When I ordered my coach I insisted on the AH and would have walked if it wasn't an available option. Cheap heat and convenience IMHO.
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