I've seen some folks here talking about using pex as a heat exchange tube. I've also seen a figure thrown out there that you would need 3 times more pex than copper. Has anyone actually tried it?
I need a new heat exchanger for my DHW and I can get a 200' roll of 3/4" pex for $89 with free shipping. I had a 42 gallon galvanized steel tank that sat inside my large tank bit it crapped out.
My thought is to coil the pex around the top of the tank sitting on top of my copper coils coming from the Tarm.
This is meant to only temper the water before it goes to my indirect water heater. It helps considerably with the heavy DHW draw I have to have the water tempered before it hits the water heater.
Any thoughts?
Eric
I need a new heat exchanger for my DHW and I can get a 200' roll of 3/4" pex for $89 with free shipping. I had a 42 gallon galvanized steel tank that sat inside my large tank bit it crapped out.
My thought is to coil the pex around the top of the tank sitting on top of my copper coils coming from the Tarm.
This is meant to only temper the water before it goes to my indirect water heater. It helps considerably with the heavy DHW draw I have to have the water tempered before it hits the water heater.
Any thoughts?
Eric