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Old 01-12-2019, 01:39 PM   #1
Junior Member
Join Date: Jan 2019
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OnDemand Water Heating

Hey All,
New to the online party, but lived full-time for a year, life happened, and now looking to go back to RVing full time.
I'm currently updating the features of my home, and was curious if anyone had any advice for installing an On-demand hot water heater?
I was looking to go fully electric, but understand that is insane on the power draw, and on a 30Amp panel, might be wishing for the moon.
But I am open and hoping someone smarter than me can set me on the right direction.

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Old 01-12-2019, 04:02 PM   #2
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Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 38,944
Hi ! Welcome to IRV2! We're sure glad you joined the gang!

Sorry, never used an on-demand Wh! Have fun and keep her between the ditches!

Good luck, happy trails, and God bless!

Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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Old 01-12-2019, 07:16 PM   #3
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Join Date: Jul 2016
Location: Dominican Republic
Posts: 7,093
Welcome to the forum and welcome back to the fold.

You are joining a good group of folks here with good info to share. I am sure someone will be along with some help for you.

Enjoy the adventure.
2018 Tiffin Allegro RED 37PA
2016 Veloster Toad
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Old 01-12-2019, 07:31 PM   #4
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Join Date: Jun 2014
Posts: 5,778
The 30 amp circuit is only 120 volt, not sure if you would find a tankless water heater capable of keeping up with demand on this size circuits
Most electric tankless hot water heaters are 240 volt and require "LOTS" of amps to operate. I investigated when I was building my new house and the ones of any size required 3-60 amp breakers to operate. I instead went with a large propane tankless unit that has performed well to date. Very efficient +98%.
Here ia a review of RV tankless water heaters.


Also, the tankless water heaters will produce lots of calcium particles that will plug all your faucets over time. I had to install a 200 mesh screen on mine to capture this. I do not have a water softener which would eliminate this, still investigating this option.
Jim J
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi
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heat, heating, water

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