The temperature of the fluid flowing through the slabs will be dependent on how much tubing (radiation) you have in the slabs and what the heat loss of the structure is. I've seen many older homes from the 1950/60s use soft copper in the floor using 160 degree water. Today's newer systems are typically designed around much lower water temperatures to accommodate high efficiency boiler options that will be more efficient with return water temperatures below 130 degrees.
I would strongly suggest getting in touch with a contractor to help you make the correct decision.
Best Regards,
Cody Mack
Applications Engineer
Caleffi North America
414-238-2360
Jeff,
Sorry for the late reply!
The temperature of the fluid flowing through the slabs will be dependent on how much tubing (radiation) you have in the slabs and what the heat loss of the structure is. I've seen many older homes from the 1950/60s use soft copper in the floor using 160 degree water. Today's newer systems are typically designed around much lower water temperatures to accommodate high efficiency boiler options that will be more efficient with return water temperatures below 130 degrees.
I would strongly suggest getting in touch with a contractor to help you make the correct decision.
Best Regards,
Cody Mack
Applications Engineer
Caleffi North America
414-238-2360