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Topic ClosedTankless propane hot water heaters

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lostagain View Drop Down
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Direct Link To This Post Topic: Tankless propane hot water heaters
    Posted: 09 Feb 2019 at 7:59pm
My daughter has a tankless system that they installed about 12 years ago and they've been pretty happy with it.  But it's a high BTU system for their small 4 br. house.  The ambient water temp is not so cold so the amount of heating that has to be done is well within the capacity of their heater.  The heater in my sister-in-law's apartment works well but they have the flow rate set at the minimum and the temp at max.  Like my daughters, they have a starting temp that is not too cold.

I looked into a tankless system when I lived in northern NJ and decide against it because in the winter the starting water temp was just too cold for all but the most costly heaters. 

For us, we're sticking with our Suburban 6 gal for our Pod.  We hardly heat water anyway and it is more than adequate for our needs.  The extra weight is of no consequence in our already light trailer.
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offgrid View Drop Down
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Direct Link To This Post Posted: 10 Feb 2019 at 5:50am
The tankless electric heaters essentially adjust instantaneously now. Precise to a degree or better with no noticeable lags or temp variations. Can’t speak for the gas ones but they’re probably pretty close to that. Which one makes the most sense depends on the costs of energy in your area, for me electric is cheapest.

With any tankless system the peak heating capacity has to be selected to meet your max flow rate and inlet and outlet water temps. You can do this calc yourself or use a table provided by the manufacturer. Tankless systems will probably use more power (electric or gas) than any other appliance in your house, but they will use less energy (power over time) than a tank water heater because when you’re not using water they’re off.

If anyone is contemplating any significant home replumbing you should take a look at modern pex based water distribution systems first, plumbing has changed dramatically and for the better in the last few years. I had to replace all my plumbing distribution after Matthew and am amazed at how much easier it is now, less expensive, more compact and convenient, leak free, and with faster water delivery.
1994 Chinook Concourse
1995 RV6A Experimental Aircraft
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