I have two others and I just love these water heaters
924245
I have two others and I just love these water heaters. Gives me instant hot at the kitchen sink rather that having to run two gallons of water waiting for the hot water from the main water heater to reach the sink.
406984
I have one for each shower (2) and have used both of them without any problems for over 2 years now.  I like that I can turn on the water so it gets hot and not waste any more water once it heats up.
1634116
I love these. I have two. One for my office, and one for home. The one in my office I use in lieu of a space heater - as space heaters are not allowed at my office. The one at home I used when I get cramps, or when I am experiencing muscle soreness from working out. Works in both situations!
4063841
I have two of these heaters. I bought them in 2008 when I was in New York City and really needed them for the cold winters there. I packed them and shipped them to California, not really thinking I'd need them but some nights in the Winter get really cold here. I have one in the bedroom. I keep it on low and it keeps the bedroom really comfortable all night long.
The second one is in my home office, which is a very large room. Even with the door left open, it maintains a comfortable warmth.
They're very quiet and easy to use.
After six years, these little babies are still going strong and cranking out enough warmth to make our home nice an cosy, so I'm about to purchase a third one for the dining room because my husband sits there and works sometimes. We live in an old, drafty house. We have a big fireplace in the living room but the other rooms need help. We have a whole house heating system but it can get pretty costly and the only setting on it is super hot. These work much better and cost less to run.
3695238
Finally a smart heater for my fish tanks. I am so tired of the glass ones and only lasting a year or so. I have had another of these for 3 years and still working well.
2195273
This is the third electric tankless water heater with which I have had some experience.  The first two were of a different brand, but I opted to go with this one for my most recent foray because of the price and the reviews.

Like any installation of an electric tankless water heater, it's always easiest to do when you're doing new construction.  Trying to retrofit a home for one of these would be much more difficult just because of the electrical requirements.  In this case, I was installing in a volunteer fire department where hot water isn't used everyday but when it is used, they need a large volume of it. So it seemed ideal to use an electric tankless water heater.  Thankfully, the location for the heater wasn't too far from the breaker box, and it wasn't too difficult to run the wiring because of a dropped ceiling that gave access where needed.

However, a cost that potential buyers should think about is the cost of WIRING.  This installation requires two separate double-pole circuits with 8-gauge copper wire, and that is not cheap.  In my case, I needed approximately 80 feet of wire for both circuits.

Hookup isn't difficult at all.  The wire is understandably stiff for that gauge wire; so you have to be aware of it, but it's not insurmountable.  Because there are two separate circuits, you must remember to keep the two hot leads for each circuit separate:  that is, each double-pole circuit's hot leads need to stay paired up.

I used flexible water heater connectors (braided metal) for the plumbing side of it and then connected to CPVC.  Again, it's not complicated.

Construction on the inside looks solid and actually quite elegant.  The basic premise of the circuit is simple.  Two heating elements (each one is fed by its own circuit, hence the need for two circuits) are provided power through high current relays that are controlled by a microprocessor.  The relays are kept cool by a heat sink that is connected to the incoming water line.  A flowmeter is attached to the inlet; so the heaters do not operate until it detects water flowing.  The display on the heater lights up whenever it's switched on and gives an indication of the water temperature that you've selected.  You can select up to 140 degrees F, but I've kept ours at 120 F thus far.  There are safety features built in in the form of thermostats on the inlet and outlet to disable the current if temperatures exceed a safe level.

Because this heater is designed for low flow rates (2-3 gallons per minute), users should be reasonable with their expectations.  It is NOT designed to run two bathrooms, a kitchen, a dishwasher, and a washing machine simultaneously.  I had two sinks going at once, and the temperature did drop some, but it is quite manageable.  One thing you can do to minimize frustration is to just reduce the flow when multiple locations are used.  Most people want to turn on the water full force; just turn it on halfway or less and you will have sufficient hot water for 2 or more locations simultaneously with only minor issues.

This unit has not been in service too long yet; so I can't speak to long-term use issues, but I am impressed thus far with the ease of installation and the quality of construction.
1525447
This is an excellent heater. Our furnace went out and we just aren't willing to pay what it would take to replace it. I purchased 3 of these in October and we have had a few cold snaps since then. The bedrooms are warm and so was the main part of our house of approximately 600 square feet. The unit also doent get hot. You could hold your hand on it as long as you wanted and not get burned so I'd consider it safe for children. I'm about to purchase one more for the remaining bedroom. A few have mentioned that the fan is loud. It isn't. I'm a light sleeper and it doesn't wake me up. And one of my cats tested the auto shut-off feature by laying right up against one of the side vents. It shut off to prevent over-heating. Others have said it doesn't heat room s quickly. That hasn't been my experience either. So if you buy one and those issues present themselves: exchange it. The unit is defective.
2138021
This is our second Secura water heater. This model does not have all of the features of our last one. We got about 5 years out of the other one with nearly 7 days a week use. The function I miss is the ability to unplug it and take it outside to the backyard. Our other model had a pump built in for that. Otherwise I am super pleased. Still gets 5 stars.
374496
We are perfectly happy with the Water Heater, we should have changed a long time ago. I could have saved my electric Bill, a lot of money. The extra Money I spend on the Electric bill could have bought the unit in one year. But never to late to change. We submitted for the rebate, to the Gas Company, and the Electric Company, it almost paid for the Unit.  Lucky, we found a Contractor that did not mind installing the Unit, I had contacted 3 other Companies, they all said, Oh the Warranty will be no good, Bo Ho, they wanted a large profit from the sale. I filled it out the Warranty papers, myself and sent it in. No Problem, even had a place for the Contractor License. Number. I later found out that the Contractor is one the recommended installers. Noritz has a website that has recommended installers for your area. Unit works great, we are real happy with it, the Electric Bill already shows a savings, and since it is a demand Water Heater, the gas is not always on. Perfect for our needs, even when the kids come home from School, no more cold water.  You can use the remote to adjust the Temperature, we left it, as to the Factory Setting, and it is plenty warm. Like I said we should have done this a long time ago. Tankless over Tank Water Heater any Day. It makes economic sense.
302295
My Rheem 50 gallon water heater was installed when I built my home 22 years ago and is still going strong! I think a lot of that is due to the fact that I have a water softener so no sediment buildup. I talked to a plumber who was amazed at the longevity. I am considering having it replaced as it is so old and I don't want to be caught short when it does fail. I understand one reason Rheems last longer is that they have Megnesium anodes in them. The plumber seems partial to the Rheem brand too.
46155
I had a small tank heater (lowboy) that was driving up my electricity costs.  So I decided to give this a try and needless to say I love it! I did have to run new wire and a bigger breaker but all in all it wasn't bad.  I used snakebite connectors which made plumbing really easy.  I also ran wire the wire to a shut off switch,  then to the heater itself in-case I need to replace it in the future.  When off it draws no power but when it is on it pulls a lot.  It will make your lights flicker ever so slightly but not enough to cause alarm. I have my setting toward the middle and have ample hot water.  I am saving around 15 to 20 bucks a month easy.
1305345
This heater is one of my all time favorites for 3 reasons . 1 = the plug doesn't get hot like others ( an indicator that the heater might melt the plug and cause a fire) 2 =it costs about $3 a day to run this heater , so i know how much my electric bill will be when i use this to heat .3 = this heater will heat a whole 12X12 room very warm and the thermostat is handy when the ideal temperature is reached . i wish i had about 10 more of these to stock up on and the color changing front grill from gray to orange when heating lets you know when it is heating .
4877145
I finally killed my last water Contigo. I have a hot water one, too. I use them a lot and love them.
1141160
I used buy Japanese brands but they are expensive. I bought this Secura and I love its reliability, price, and functionality. The best electric water boiler I have owned and highly recommend. The only negative is, I wish instead of only silver, they can offer in other colors especially red.
3160565
I love these and combined them with the Downpipe First Flush Water Diverter Kit system.  (also on Amazon)  And they work great.

I'm in a 3rd world Caribbean country and have had NO city water for almost 2 years and in a major drought.  We are having are second heavy rain since last FEB. and watching these simple systems collecting water off a rather dirty roof with the Leaf Eater taking out the larger debris while the flush system takes captures the finer dust and... bird stuff.

Both need a little cleaning type maintenance after a hard rain, it is easy to do and I'm glad to do it.  I have 3 of the 4 Leaf Eaters installed so they are easy to get to from upper porch, the other I need a ladder.  The Flush system needs to be opened at the bottom, easy by hand, to clear the drain.  But since we have only had  2 heavy rains, they have a lot of garbage to deal with.  Since we need all the water we can get, small price to pay.  1" of rain = 2,000 gallons for us going into 2 water cisterns.  I'll take all that I can.

Not difficult to install.  We are on the Atlantic Ocean with VERY salty air; the Leaf Eater stainless steel grid has held up very well with NO corrosion at all.

We also have had to put in a well, very salty and nasty water but we have filters/UV and 3 RO systems by iSpring that deliver 1,500 a day.

When you don't have ANY water, you do what you need to do.  When you find good products that could help others dealing with drought and water problems, then you should talk about them.

Thank you
1807234
Here is my experience,

They DO NOT honor their warrantee.

My plumber installed 2 Ream Water heaters in my two family it worked great for two years, three months ago one burst at the bottom and flooded my basement. NO problem the got like a 6 or 7 year warrante. I called Rheem they said the product is under warrantee they gave me a return number and i should take the Defective heater back to where i purchased it.

Contractor took it back and the Distributor where it was originally purchased said they WILL NOT Exchange. I contacted Rheem they said try another distributor Same thing NO EXCHANGES. I called several more and ask Rheem if they could ship me one they said NO. This has been ongoing for 3 months I eventually contacted the BBB. Rheem said they would give me fair market value this turns out to be about $400 a new heater cost about $800 + NOT Fair at all.

Please do not purchase they do NOT honor their warrantee. I purchased a different brand to replace the defective one.

YOU will get Screwed when your heater fails

I found similar reviews with consumer affairs

I had to pay an additional $400 for a new heater
Flooded basement
Cleanup expenses
Contractor / Plumber expenses
2914506
I have FOUR of these: one in an unheated sunroom, one in the bedroom at the foot of the bed, one in the kitchen, and one in the living room. The sunroom heater runs 24/7, the other on as as-needed-basis. They are strong, quiet, stay cool, and I have not noticed my electric bill rising at all. Love 'em.