Radiant Floors – Electrical

Radiant Floors – Electrical A system that consists of electric cables built into the floor. Systems that feature mats of electrically conductive plastic are also available and are mounted onto the subfloor below a floor covering, such as tile. Because of the...

Radiant Floors – Air

Radiant Floors – Air An ineffective choice for residential applications. Although they can be combined with solar air heating systems, the system suffers from the obvious drawback of only being available in the daytime, when heating loads are generally lower....

Radiant Barrier

Radiant Barrier A barrier, installed on the underside of roof sheathing in warm or hot climates to reflect some of the sun’s radiant heat energy so it does not enter the attic. Radiant barriers can also help prevent winter heat loss from the home.


Radon A naturally occurring gas, colorless and odorless, that has been shown to cause adverse health effects. Radon gas often enters a structure by seeping through cellar walls and floors.

Recirculating Hot Water Heater

Systems that use a thermostat or timer to automatically turn on the pump whenever water temperature drops below a set-point, or when the timer reaches a setting. Hot water recirculation systems can be activated by the push of a button or by a thermostat, timer or...