With the coldest incoming water the worst I had to do was slow the flow just a little bit to maintain 107 degrees F which is my preferred shower temperature, but I found it worked great for that application. Florida so you need to be mindful of what your coldest incoming water temp might be.
A primary advantage of the tankless water heater, is that as long as your water flow is constant and within range, you never run out of hot water. No problem as long as 1.5 gpm is to your liking. Tankless heaters draw a lot of current all at once. Be sure your service panel can handle the extra 60 Amp breaker.
This unit requires a double pole 60 Amp breaker and 6/2 AWG wire with ground. No pressure valve on this heater with no tank. Codes vary but not necessary. Drip pan not needed either, but mount in an area you can monitor for any problems. Guaranteed to be operational when you receive it if you don't make any errors in wiring, plumbing or setup.
Follow installation instructions carefully and you won't have a problem. The installation manual is included.The unit was used to supply water at 95 degrees to the wash system of a photographic processor, a purpose for which it worked perfectly. The item "Tankless Water Heater Stiebel Eltron Tempra 12" is in sale since Wednesday, January 27, 2021. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Water Heaters\Tankless Water Heaters". The seller is "avantp" and is located in Richmond, California. This item can be shipped worldwide.