Hybrid and Radiant Heating Systems:
There will be times that you'll find hybrid types of heating systems. This refers to a heating system that has been adapted for an individual homeowner by a heating contractor. This is a modified design installation. The most common types of hybrid systems you'll encounter are combination steam and forced hot water heaters. A steam system can have a circulator pump installed to circulate the hot water in the heat exchanger. These pipes will lead to forced hot water radiators that have been put in after the steam boiler was installed. If you ever run into a problem where you can't properly evaluate a hybrid heating system, then just tell the client to speak with the contractor who installed it. The contractor should be able to provide further information.
Radiant heat is another example of unusual heating systems you may encounter. Radiant heat is a system where the heating coils or pipes are inside the floors, walls, or ceilings of a home. As the coils or pipes heat up, they will radiate the heat into the rooms. These systems can be expensive to install and operate.