Rheem240V 3 Heating Chambers RTEX-27 Residential Tankless Water Heater, GRAY

We love how this works, keeps us in plenty of hot water throughout the home. Delivery was late, supposed to be 2 days and finally got it on the fourth day.

This product is absolutely useless for use in cold climates where the city water gets cold in the winter time. This product likely will work well in Florida, not in Canada. Avoid at all costs.

I did need to install another 240V circuit to accommodate this tankless hot water heater, but my circuit-breaker box had the extra capacity, so it was simple to have done, and now, having an unlimited supply of hot water for as long as I want it is more than just convenient. No more long showers cut short by suddenly cold water! No more waiting after (or before) a shower or load of laundry for a whole tankful of water to get hot enough! No more planning out major hot-water use to avoid running out! As far as I can tell, the temperature control is accurate and dependable; I changed the setting to a few degrees higher than the installer left it, and I noticed the difference immediately. I can't imagine household use requiring a degree-by-degree control of the water temperature, but since the control is digital, why not take advantage of the capability? It's so much clearer than some "hot" "medium-hot" "medium" labels that leave everyone guessing, anyway.I bought this unit here because the price was relatively low and I could have the unit delivered to my door, instead of having to drive a 55-miles round trip for a more limited selection. I bought the unit with one level more capacity than I actually needed because the extra expense would disappear over the long life of the unit and I'd be certain never to run out of hot water. I bought the Rheem because of the brand's reputation.As for the "nay-sayers," I and some of my friends who inquired about tankless heaters were told tales of low groundwater temperatures and other things that (1) turned out not to be true and (2) didn't agree with the manufacturer's (and other professionals') information. I do not live where it gets very, very cold in winter, but neither does the plumbing contractor who advised me against this kind of heater; either he's ignorant, makes a lot more profit when he installs a hot water tank, or he's unwilling to learn about electric circuitry in 21st-century homes. If you live where winters are really long and cold, do your research and learn what you need to know, sure, but don't let misinformation keep you from having state-of-the-art hot water.

My old 80 gallon hot water tank was on it's way out so I did research on a replacement. I could replace the tank with another 80 gallon hot water heater (no thanks), I could go with a hybrid 80 gallon hot water heater (not bad), or I could go with a tankless system (ideal). There are pros and cons to each but I ended up choosing the Rheem 27kw tankless hot water heater. I read good and bad reviews on this system but I have nothing but great things to say. I had to have an electrician come and install an additional (2) 40 amp breakers and 8/2 wire for around $450 so I had a total of 3 lines hooked up to the system (essentially 1 line/breaker for each heating element). At first I was getting only luke warm water so I called Rheem tech support and the advisor was extremely helpful and told me to check a few things. Within 10 minutes it was working perfectly. (The issue had to do with the install, not the product). Be sure you're getting 240V to each element before your electrican leaves. Nevertheless, we initially set the temp to 140 and was way too hot. We dialed it down to 125 and it is perfect. We have 4 full bathrooms, kitchen, laundry, etc. We can easily have 3 showers on simultaneously. Best part is the hot water never runs out and ultimately saves you money. 2 thumbs up!

This product didn’t work out of the boxTerrible customer service, I sent it back for a refund on 4/15 and it’s now 6/2 and I have not gotten my money back. Lies… they say they didn’t receive it back, total BS I want my refund….