“I am new to tankless water heaters. I've always had "well" water and was afraid of mineral build-up, and I have to add, a skeptic that this unit could supply 2 showers with adequate pressure.
I recently added a new Springwell water system, including a Spin-down filter, iron and Magnesium filter, and a salt-based water softener. Mineral problems were eliminated. We all have been thrilled with the performance of this unit! No noticeable change in water pressure at the shower, even with two running. Installation was easy, hiring a plumber to hook up the gas and water lines. Venting it myself.
Rheem's helpline was horrible, my unit kept shutting down with an error code, and no one would listen to me about my venting being correct. They would just parrot back what was already in the manual. Turns out we found a loose wire on a sensor, plugged it in and it's run perfectly since. I am glad I got rid of my two, 40-gallon tank-style heaters. No flu pipe, no water being heated while we are away, and a huge space saver in the basement!”
“This unit turns on almost instantly and delivers full temp water almost immediately. Also, there is no noticeable cold "slug" of water when you turn the water on and off (like there was with my 15-year-old Bosch unit).”
“We replaced a tanked water heater that was 20 years old (but fortunately vented out the wall) with the Rheem Tankless unit. It took a day for the plumber to take out the old one and install the new one. I did purchase the Horizontal Concentric Vent Termination Kit which fit perfectly through the 3" hole in the wall. We did change the gas piping coming into the house to 3/4" so that we ensured there was enough gas to the unit. Mounted the new unit above a stationary tub on a frame anchored to a concrete wall. The condensate line drains directly down into the sink which is nice. We also installed a sediment water filter on the water line feeding the tankless hot water heater. Just to be safe. Also, installed so that it is easy to annually flush the unit. Success in that there are no new holes through the walls. Be aware that it takes slightly longer (on the order of 5 - 10 seconds) to get hot water to fixtures that are a ways away from the water heater. I'm not sure of the physics and flow, but I'm guessing the first water that flows when hot water is demanded is not as hot as water that would be sitting in a tank. Thus, the short delay. We have 4 bathrooms and we have not run out of hot water, so it does what it says.”
“Very pleased with this unit. I have had it installed for 2 months. We have a family of five using it. My incoming ground water is around 50 degrees and it has no problem raising it to 140 degrees. We've been able to run 2 showers plus a garden tub (albeit with reduced pressure) at the same time, but the temperature remains fairly steady. I had concerns that it would be able to handle our useage but if you install it correctly, you shouldn't have any problems. I made sure to run 3/4 inch gas line but you can use 1/2 inch but I would expect the performance to decline.”
“This is THE water heater to get. I went with a tankless heater against the advice of all the plumbers but after a dozen or so (half of which came from Tankless Water Heater Depot) I’ve had little issues. You may need to argue with your city’s inspector as there are some anomalies that they won’t be aware of. For instance; do not plug this into a GFCI outlet.
One of the best benefits of a Rheem is that it has the lowest flow trigger and BTU I could find. That gives this box the widest spectrum of flow that would still have hot water.”
