Shop our selection of Propane Heaters in the Heating, Venting Cooling Department at The Home Depot..Radiant Heat Systems. Used in conjunction with a boiler or propane powered water heater, radiant systems pump heated water throughs embedded in the flooring..Thoughts on ” Things to Ask When Buying a House anyone considering buying a house with propane heat. to buy a house with a propane heating system .Heating is the largest energy expense in most homes. This accounts for almost two thirds of annual energy bills in colder areas of the country. Home heating systems can also be a major source of air pollution..