Anyone work with/install tankless water heaters?

I’ve been looking at some tankless water heaters for a home I will be purchasing. I’m pretty handy and understand the basic of the installations, I just wanted to know if you have installed one and have any input/suggestions on a model. I am currently looking at a Rheem RTG-53PVN and a Bosch GWH-425-HN-N heater.

Thanks!

Rheem is a top of the line model. Stay towards that. Also, check your PM’s, I’ll see if I can make take care of ya.

Gas or electric?

The ones he listed above are gas, notice the G’s in the model numbers

Hell, you expect me to notice something like that???:doh: