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Old 01-11-2019, 06:04 PM   #1
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Hot water

We have to run our kitchen hot water faucet way too long to finally get water for washing dishes so I am researching under sink instant water heaters. Must be 110v.

Has anyone performed this mod and is there a specific brand that has worked?
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Old 01-11-2019, 07:56 PM   #2
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The amp draw for an electric tankless water heater would likely exceed your trailers electrical system limits. (22 amps)
A small tanked heater (2 gallon) would probably work but would draw (12 amps)
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Old 01-11-2019, 08:45 PM   #3
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We just save the 'hot' water until it gets HOT in a pitcher. Then use it to rinse the dishes we just washed with the real hot water.🤓👍

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Old 01-11-2019, 09:43 PM   #4
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We just save the 'hot' water until it gets HOT in a pitcher. Then use it to rinse the dishes we just washed with the real hot water.

Bob
We catch the water in a bucket and use it to flush the toilet in the middle of the night when we have the pump off.
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Old 01-12-2019, 04:41 AM   #5
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If you run that cold/warm water into a tea kettle, it can be heated up on the stove for washing/rinsing dishes later . . . or washing your face etc. before bedtime. Even if you don't drink the tank water, it should be serviceable for those uses if the tank has been maintained well.

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Old 01-12-2019, 08:20 AM   #6
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Thanks for the replies. We do fill a pan from the bathroom sink which is instantaneous due to the location of the water heater, then take that pan to the kitchen for washing/rinsing.

I still think an instant electric heater would work. If they do draw 22 amps we would manage our other appliances the same as now. No microwave if the AC is running, etc.

We have a Magnum hybrid 3000 watt inverter that is supposed to “supplement” the shore power during spikes. I have not tested it in a real world scenario but that may take care of excessive draw from the heater.

It won’t run all the time...just as need.
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Old 01-12-2019, 09:02 AM   #7
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I use my Cuisinart electric kettle for dishes, or stovetop coffee pot when boondocking. So much more convenient than making trailer mods.
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Old 01-13-2019, 03:16 AM   #8
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I use my Cuisinart electric kettle for dishes, or stovetop coffee pot when boondocking. So much more convenient than making trailer mods.
Plus 1

Convenient, much less expensive, portable for outside chores and less likely to clog up with calcium deposits. Grungy interior? Use CLR or similar brand.
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Old 01-13-2019, 08:57 AM   #9
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Thanks for the replies. I have ordered an Excel ventless propane water heater. Foley RV in Gulfport, MS will install it next week. Should be an easy installation due to the furnace and stove top gas lines already in place.
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Old 01-13-2019, 09:05 AM   #10
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Thanks for the replies. I have ordered an Excel ventless propane water heater. Foley RV in Gulfport, MS will install it next week. Should be an easy installation due to the furnace and stove top gas lines already in place.
Are you mounting it under the sink? If you are onlyreplacing your existing HW tank an instantaneous heater will do nothing to eliminate the wait for hot water at the tap. It will also reduce the amount of fresh water you carry by 6 gallons.
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Old 01-13-2019, 09:58 AM   #11
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The six gallons in a conventional water heater is not easily used as fresh water. In my case, it only added 42 pounds of weight to the AS. The only way you can get to that water is to use the tank drain, and spill it all over the place. Pointless weight IMHO.

If I need extra water, I put a case of bottled water under the front bed. Inaccessible water in a water heater is basically useless. When the water pump sucks the last of the water it can get out of the fresh water tank, there is no pressure to push water out of the water heater. This “6 gallons of extra water” idea makes little sense in the grand scheme of things because it’s difficult if not impossible. to utilize.
I installed a tankless water heater to get lots of hot water to make DW happily. The six gallons of water in it was never a consideration other than getting some weight off the AS forward of the axles on the streetside.
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Old 01-13-2019, 11:09 AM   #12
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The six gallons in a conventional water heater is not easily used as fresh water. In my case, it only added 42 pounds of weight to the AS. The only way you can get to that water is to use the tank drain, and spill it all over the place. Pointless weight IMHO. ...
I access the extra six gallons of hot water in the tank when I open a HW tap. You are right - in an emergency you could drain the HW tank, but I don't foresee that happening very often.
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Old 01-13-2019, 04:47 PM   #13
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Are you mounting it under the sink? If you are onlyreplacing your existing HW tank an instantaneous heater will do nothing to eliminate the wait for hot water at the tap. It will also reduce the amount of fresh water you carry by 6 gallons.


It will be mounted under the kitchen sink and will supplement the 6 gallon tank which works great for the bath but not for the kitchen. https://www.campingworld.com/excel-v...SABEgLTnPD_BwE
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Old 01-13-2019, 05:17 PM   #14
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Guess I'm an outlier here. The only thing I use hot water from the water heater for is showering. When I do that, I run it into a quart jug until it's hot, then use that later for washing dishes. Of course by then it's lukewarm, but that doesn't matter. The way I do dishes, hot water doesn't seem necessary.

The secret is wiping every dish or pot clean with a paper towel before food can dry on it. Once I've done that, it's easy to get them the rest of the way clean with very small amounts of water and detergent. A quart will last me a day or more... and then it's time to shower again.

(All this is done with propane, by the way. I rarely plug in.)
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