This is a 90+ yr house that had some plumbing upgrades. The house has a dirt crawlspace with no floor insulation.
The plumber ran PEX line out the walls into the living space and followed the top of the baseboard heat to another wall where he shot up to the second floor. In theory it works, but outside of theory, will the heating fins cause damage to the PEX or will it continue to work? The baseboard heat is active and works fine.