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12-24-2023, 10:10 AM
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#1
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Senior Member
Join Date: May 2023
Location: Colorado Springs
Posts: 108
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On demand electric water heater.
I'm considering adding a point of use water heater under the kitchen sink. The on demand propane heater is some distance away so the sink is full before the hot water arrives. It's fine for the shower which is right above it. I'd also rather use electric if hooked to shore power.
Is this a bad idea for some reason?
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12-24-2023, 12:11 PM
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#2
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,335
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We have two point of use 4 gallon water heaters in our stick and brick, kitchen and master bath. Well worth the $200 each and very little trouble to install!
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Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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12-24-2023, 12:12 PM
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#3
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Senior Member
Join Date: Apr 2019
Location: Henniker
Posts: 2,183
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The Fire Investigator side of me is compelled to advise you to engage a licensed electrician for the task.
Now that I have said that, yes it can be done. You seem to know the difference between “on demand” and “point of use” and that’s half the battle. The other consideration aside from the electrical is the plumbing. You will need to cap the existing hot water supply (red pex) to the kitchen sink, and only feed the point of use water heater with the cold water supply (blue pex) on the input side and then the output can be connected to the sink faucet as usual. If it were me, I would use an inline shutoff valve on the hot water side in the (rare) event that you find yourself without shore power, so you could still use the demand water heater for hot water if needed.
On the electrical side you will likely need a 20 amp dedicated circuit to the point of use water heater. This will require adding a breaker and wiring from the power center to the point of use water heater under the sink
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Rob & Amy
2019 Passport 240BH SL (for sale)
2024 Cougar 29BHL (Taking delivery 5/11/24)
2022 Ford F250 7.3L Godzilla Crew Cab FX4
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12-24-2023, 12:20 PM
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#4
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,357
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Quote:
Originally Posted by NH_Bulldog
The Fire Investigator side of me is compelled to advise you to engage a licensed electrician for the task.
Now that I have said that, yes it can be done. You seem to know the difference between “on demand” and “point of use” and that’s half the battle. The other consideration aside from the electrical is the plumbing. You will need to cap the existing hot water supply (red pex) to the kitchen sink, and only feed the point of use water heater with the cold water supply (blue pex) on the input side and then the output can be connected to the sink faucet as usual. If it were me, I would use an inline shutoff valve on the hot water side in the (rare) event that you find yourself without shore power, so you could still use the demand water heater for hot water if needed.
On the electrical side you will likely need a 20 amp dedicated circuit to the point of use water heater. This will require adding a breaker and wiring from the power center to the point of use water heater under the sink
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If he has the counter space, can’t he just plumb in the cold in, then put a faucet in the counter and plumb the hot out to that faucet?
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-24-2023, 04:01 PM
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#5
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,335
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Ours are 115volts, 12 amps. Both have the original hot water supply line going to the ‘in’ side and the ‘out’ line leading to the hot side of the faucet. An on-demand water heater in your unit might require a little thought.
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