Heat (170°f) in unused space under stairs?

When we built your new house the HVAC contractor ran tube for lower level in-slab heat in an unused space below our stairs (as well as a closet under the… When we built your new house the HVAC contractor ran tube for lower level in-slab heat in an unused space below our stairs (as well as a closet under the…Read MoreGreenBuildingAdvisor