I installed a Takagi 175K btu NG water heater almost 2 yrs ago It's the same as AO Smith just cheaper. From the research I've done it looks like people undersize the unit too often and then complain abot low flow in multiple draw situations. I live in Minnesota and it still performs well even...
Re: Banninf IP Addresses
******** spam or unsolicited adverts are the two causes of these. If you didn't do this then someone on the same ISP as you already did.
I have the same size house and number of occupants. I bought the Navien NR-240. It supplies plenty of hot water for us. I wish I bought the A model though. Our dishwasher does not work well with the tankless unless we run the hot water periodically throughout the cycle.
Otherwise it is fine...
A similar product to the Rinnai, with a proven track record IMO, is a Takagi on-demand water heater, and Takagi allows the DIYer to install their units. Just something to consider.
Just a quick not of caution with using a Marey or any other tankless water heater; while these units may be UL approved, THEY ARE NOT RVIA APPROVED FOR USE IN A RECREATIONAL VEHICLE! This has been thoroughly discussed in numerous other threads on the topic.
This means that for any problems like...
One of the reasons to mount outside and not inside is the venting.
If mounted outside, the vent just vents, and inside you must use the special vent pipe, which is costley.
Since an electric unit does not need venting, it makes no differance where it is mounted.