Atmor AT-910-24TP AT-D24TP-AZ ThermoPro 24 kW / 240V 4.6 GPM Digital Thermostatic Tankless Electric Instant Water Heater, 24kW/240V, Gray

It has been a little over a month since purchasing and installing the unit. Performance is undeniably great and beat my expectations. It provides consistent temperature regardless of how long the unit is running for, unlike the 40 gallon electric tank system that it replaced. It has a pretty small footprint. It has not been installed long enough to notice any changes on the utility bill but even if it stays even, this unit is still a win.Installation was easy and straight forward. One piece of advise I would give to the do-it yourselfers is to avoid using copper fittings for connecting to the unit, I could not get a tight seal with copper on the stainless fittings, regardless of plumbers putty or tape. I ended up using brass fittings along with the putty and that solved the problem. The electrical was easy, ample room to install the wires inside the unit. The instructions were clear if you had at least some prior experience with electrical and plumbing.Do not under size, follow the manufacturers recommendations. I have 7 and sometimes 8 people using hot water daily and find this unit is sufficiently sized for my needs without any change in temperature.I reviewed and compared many units before choosing this one, partly because of the positive feedback I have seen, but also that the manufacturer provided a lot of responses and practical help, for any who had any issue at all.It cost me near as much to install as it did to buy (even doing it myself), due to the additional electrical wiring I had to install and plumbing changes. This unit will draw up to a 100A when in use, make sure your electric service has enough amps to support it and your box has enough room for the 3 40A double breakers you will need to add. I have a 200 amp service. I will say that while in operation, any LED lights you have will a little "flicker", not bad, but enough to notice. I do not find that the case with any other type of light bulb, just the LED bulbs.As for purchasing experience, I ordered it around noon and upgraded to next day delivery. The unit was delivered by 9AM the next morning. Great service. I could have purchased this unit at Home Depot for around the same price, but was told that it would be 7 to 10 days for delivery even to the store.

I just had this unit installed two weeks ago, so time will tell how reliable and/or efficient it is. So far it has worked well.Update 2/19/19 - Have been using this unit for awhile now. I reduced it's rating by one star because the temperature control does not work up to par. When I take a shower the water temperature initially comes out scolding hot, even though I have the temperature set to 105 degrees. After about one minute the water temperature self adjusts to the 105 it is set at. Inconvenient to say the least.

Lasted a bit over 3 years and quit. I have a titan that was installed 20 years ago in another house and it is still working. Don't waste your money. Not made to last. Don't believe me, read the other reviews. Pure garbage. When you call customer service, instead of trying to help resolve issue, they try to get you to purchase another heater. Ridiculous@$#!

Great buy!  I’ve been reading up on tankless electric water heaters for a while now and finally thought to give it a try.  At first, I was very skeptical on the technology and performance from such a little unit, but according to my tenant, my skepticism was proven wrong.  I installed one of these units in a rental unit of mine over a month ago, and my tenant tells me how it is working great for her and the family.  Running out of hot water is never an issue anymore and they are even seeing a significant savings on their first monthly bill. Looking to install one for myself.

This unit has two settings. You can have COLD water, by turning it OFF. Or you can have water of some random temperature ranging between 104*F and 147*F, which is ironic since the unit won't let you set the temperature over 122*F. You will burn yourself using this unit. Do not let children use any water connected to it. It's completely unusable junk. We would return it but we didn't install it right away and it's long past the return date.

So far so good....still needs to wait for the water to warm up....not as instant as to believe by my electrician.

I have been using a lower wattage model for the last 3 years and have been happy until it burned out. Went with this higher wattage unit to not work it so hard. What I got was a unit with similar specs that didn't work as it was DOA. I will not order from this seller again as I feel it was a bait and switch. Very disappointed. Buyer beware!

I bought this water heater almost two year ago andI do not have any problems with this water heater until electric company come over my home to fix the electric wire and broken it. So I got secon one to replace it. It works perfect. Thanks sell gave me good service.

Died after 3 months. The company is not responding to messages.