Replacing minimax NT 400 (400k btu) and going with RayPak low nox heater. There are two options and I am hoping to get some advice about which to choose. I can either get the ASME model that has copper heat exchangers, or go with the cupro nickel heat exchanger version that is NOT ASME. I know the headers are different - cupronickel is a polymer header, ASME is a cast iron header. The price difference is negligible.
So, the question remains: is one objectively better than the other, or is just a question of where I want to trade off? Everywhere I read says cupronickel is superior to copper. (Pool is SWG, plaster/shotcrete). I also read that ASME will outlast anything...but not if it uses copper that's inferior to cupronickel, right? I'm kind of in the woods on this one. Is ASME just complete overkill for a residential application anyway?
Our season is from about mid April to late November if we're lucky. Maybe longer once we get an actual hard working heater installed! Thanks for the advice.
So, the question remains: is one objectively better than the other, or is just a question of where I want to trade off? Everywhere I read says cupronickel is superior to copper. (Pool is SWG, plaster/shotcrete). I also read that ASME will outlast anything...but not if it uses copper that's inferior to cupronickel, right? I'm kind of in the woods on this one. Is ASME just complete overkill for a residential application anyway?
Our season is from about mid April to late November if we're lucky. Maybe longer once we get an actual hard working heater installed! Thanks for the advice.