A furnace on roof is a type of heating system that is installed on the roof of a building. It is usually used to provide heating to the interior of the building, and is typically powered by natural gas or electricity. The furnace on roof system is designed to be efficient and cost-effective, and can be used to heat a single room or an entire building. The furnace on roof system is usually installed on the highest point of the roof, which allows it to take advantage of the natural heat from the sun. The furnace on roof system is also designed to be easy to maintain, as it requires minimal maintenance and can be serviced quickly and easily. The furnace on roof system is also an environmentally friendly option, as it does not produce any emissions or pollutants. The furnace on roof system is a great option for those looking for an efficient and cost-effective way to heat their building.