I recently purchased a home built in the 1920s. I am looking to install a master bathroom. The master is now 12' by 24'. The master had 2 raditors, one on each side of the room. One of the raditors has been removed but the plumbing is still there. I'm looking to connect those pipes to a hydronic radiant floor heating system but I believe the temperature of the water will be too high. Can I purchase a device to cool down the temperature before it flows through the PEX tubing?