Top 10 Best Electric Water Heater for Outdoor Shower – Expert Picks

Customer Review: “I took this on a week-long camping trip and it was amazing! The heater worked perfectly even in chilly weather. Took about 5 minutes to get decent hot water, and the battery lasted through three full showers.”

Customer Review: “Great product for washing my dog after beach trips. Easy to carry and set up. The only downside is the hose length could be longer for larger yards.”

Customer Review: “Installed this in our mountain cabin last winter. Even though temperatures dropped below freezing, the freeze protection worked perfectly. No more worrying about burst pipes!”

Customer Review: “We replaced our old 50-gallon tank heater with this unit. Installation was straightforward, and now we never run out of hot water—even when the dishwasher and washing machine run simultaneously.”

Customer Review: “This water heater works great. It is so much better than having a traditional water heater. It takes up so much less space and showers can last forever if you want them to. It heats up quickly and provides steady hot water for as long as you need. We are in Ohio and this runs a shower in the winter. Flow does have to be limited but its still a very enjoyable shower. Setup was mostly easy, but you will probably need adapters to replace your current water heater. Overall this is a great value and I can recommend it.”

Customer Review: “We purchased this water heater based on comments here and like others, we agree that it is a great water heater. We are using it as a whole-house water heater replacing a sixty gallon tank that started leaking. We expected that there would be some adjustment in going tank-less and using an 11KW as a whole-house water heater, for example like not using other faucets while showering, etc., but we were willing to make that sacrifice because we were going to be saving money on the heater, and on electricity with the bonus of doing the right thing for the environment. Well, this heater exceeded expectations by a LOT. We keep it set at 110 degrees which makes for very hot shower but not scalding and no problems using other sinks at the same time. My wife told me she took a shower while the dishwasher was running and expected it to be ‘cool’ but to her surprise there was no problem handling the dishwasher and shower at the same time. It has been about a month since we installed the water heater in our 4 bedroom, 3.5 bath house and we have forgotten that we are heating water on demand because there is no noticeable difference compared to when we had a sixty gallon tank. One of our showers is a double shower and I tried that out, no problem the heater handled both fine with no reduction in temperature. You should be aware our house is a Florida house so our city water comes in at around 68 degrees. If you had well water you will have different results as you will be heating much colder water. One other thing to note, if you take a bath you will want to crank the heater to higher temp, it is so easy with the knob and digital readout I taught my daughter to crank it before her bath so she can add extra hot water to ‘freshen’ up her long and hot bath otherwise 110 degrees isn’t hot enough to heat up a cooled bath do to rapid heat loss. You can buy the remote control for about forty bucks and adjust the heater setting from anywhere, or just keep your heater set to a higher temp. We like running it at 110 so that we have maximum energy savings and eliminate scalding risks. I highly recommend this heater, keep in mind that you need upgraded wiring, you will probably have 220 volt electric for your existing water heater but ours was only 30 amp and this one calls for 60 amp so that means getting MUCH thicker wire that is expensive and hard to pull. If your heater can be located close to the breaker box you will save money in wire and the hassle of pulling super thick wire. I bought wiring and breaker for 50amp by mistake and didn’t notice until after the installation was finished. We must have never drawn more than 50 amps because the breaker has NEVER kicked even running two showers so I plan on keeping the 50 amp breaker as the wire we used is safe for only up to 50 amps and I’d need to replace the wire to even thicker.”

Customer Review: “Perfect for my tiny house! Installed under the kitchen sink and now I have instant hot water for dishes and handwashing. The digital display makes it easy to set my preferred temperature.”

Customer Review: “Needed something compact for my boat. This heater works great and the digital readout helps me avoid surprises. Just make sure your outlet can handle the draw!”

Customer Review: “The media could not be loaded. When the installer arrives right away and this electric water heater is very good and the best thing is that it is small and does not need a tank. It is very practical to heat the water perfectly. I arrive exactly as described.”

Customer Review: “If you’re tired of waiting forever for the water to warm up just to wash your hands or do the dishes, this little gadget is a game changer. It’s super compact but packs a punch—you install it under the sink and you get hot water literally in seconds. The best part is the digital display that shows you the exact temp so you don’t get any chilly surprises. Just a heads-up: don’t skimp on the wiring. Since it heats up instantly, it pulls a lot of power, so make sure your electrical setup can handle it. Overall, it’s a solid win if you want to save space and stop freezing your hands off. Totally worth it!”

Customer Review: “Installed in my RV bathroom and love how quick it heats water. The digital display helps me avoid burns, and it fits perfectly under the vanity.”

Customer Review: “Needed something for my vacation cabin. This heater solved the problem of no hot water. Just ensure your circuit can handle the load!”

Customer Review: “Used this on my sailboat all summer. The constant temperature kept us comfortable even in rough seas. Highly recommend for boating!”

Customer Review: “Great for my campervan. Small size fits perfectly under the sink, and the LCD display makes adjusting temperature simple.”

Customer Review: “Love the four temperature settings! Perfect for adjusting based on the season. The included hose reaches everywhere I need.”

Customer Review: “Installed this as a backup for our main heater. Works great during power outages when combined with stored hot water.”

Customer Review: “Replaced our old 55-gallon tank with this unit. Installation was complex but worth it—never run out of hot water now!”

Customer Review: “Used this in our hunting cabin. Even with freezing temps, it performed flawlessly thanks to the freeze protection feature.”

Customer Review: “I replaced a 55 gallon hot water tank with this unit, I bought a little larger unit than what the ratings said I needed to be safe. Make sure you check your electrical panel to make sure you have room for 3 x 40 double pole 40 amp circuit breakers. I didn’t have enough room, had to add a sub panel plus had to run 9 x 8 gauge wires the unit requires. I’m pretty handy, but asked a certified electrician to help me with the pre wiring. To be honest, I would have been afraid to try and do this myself even with all my experience. Installation was pretty simple after you have the wiring installed. Use 1 inch piping from your electrical panel to the tankless electrical unit or you won’t be able to pull the nine 8 gauge wires through the pipe. I also suggest having an electrical panel with a main breaker so you don’t have to shut the whole house down for the final install. Additionally i installed a surge protector to hopefully protect the unit from power surges which appears to have delicate electronics inside. We’ve only had this unit in operation for 4 days so far, but the water is really hot, have had no issues at this point and I love the added space gained without having the tank. Time will tell if we save 50% on energy, but from all my research it makes sense even with us living in a warm climate. There are several tankless unit manufacturers with great ratings, I went with Rheem because if I have an issue, they are based in the USA and hopefully that means English speaking in my time zone… Hope my review is helpful to you. Update: it’s been 7 months, still works great, very happy with this decision even though I can say I’ve seen significant energy savings”

Customer Review: “Just installed. Works well. Hope it will last longer than the off brand one we had before. Very easy installation due to being a replacement for the same style unit. Electrical, plumbing and mounting locations all the same.”