Point of use electric water heater recs

I had one under a sink on a bar in a screened in porch. They are very small and I doubt they would have enough water for use in a kitchen. They also cost as much as a full size water heater. Take a look at ReadyTemp which circulates hot water so you don’t have to wait for water to get hot.

This is interesting. Looks like the way to go, but that model says "not to be used with a tankless water heater". I have an exterior tankless on the opposite side of my house. Can this be done with a tankless? TIA

I see - as far as I know the recirculating pumps are not designed for tankless water heaters, but do some web searches just in case, and I’m sure other posters may know, so you are back to square one with your original question. Don’t have recommendation for you on that.

OP, in your situation you might need to install a small tank water heater under the kitchen sink. They do make compact units than run on 120V, hold about 3 useable gallons. I've done remodels on two 1-bath rental properties as well as a kitchen appliance remodel for another client in the last year and in all cases there simply wasn't a suitable alternative due to existing system/space/cost constraints. Went with Steibel 4-gal units, fairly compact and simple to setup, can easily fill a kitchen sink and run the dishwasher. They have pretty good recovery rates too, especially plumbed into the existing hot water supply.

Bosch makes a tank that fits your needs. 2.5G is $150. They have 4 and 7 gallon versions. They’re all rated for 12 amps on a 120 plug.


I went another route. I removed my soap dispenser and popped an under sink filter + instant hot water tank (insinkerator and ReadyHot are the two brands I looked into. I went with a Ready Hot with digital dial and added an under sink cooler as well (I got the dual-lever faucet, but those models are currently out of stock), so now I can pour filtered water from a second tap at either 42F or 208F. You can grab an Insinkerator with a single tap, likely available at your local Lowe’s for under $200. The flow rate is relatively slow, but now I can make tea/coffee out the tap, get basically anything off a pot/pan in a few seconds, heat up dishwater in the sink relatively rapidly. Some folks say they sanitize their baby bottles with it. You can supposedly make Aldente pasta and steam vegetables in a strainer right from the tap. I have not verified these claims. I have no reason to doubt them.
Cons to this- again, flow rate is slow, and you only get 0.67 gallons of hot (or cold in this case). The hot recovers within 15 minutes (and within a few seconds if you’re only making a cup or two of something). The cold recovers way slower, but that’s not really the point of this thread. You won’t be able to wash your hands unless you use much “cooler” water than the max temps. If you run it 200F+ and try to wash something glass/ceramic with a crack in it, you can break it pretty easily.


Just another unusual but pretty useful DIY option if any of that is of interest to you.