If you're starting the process of a newly built home, or considering updating your home's system during a home renovation, there are many components to consider. One of those components is the heating project. It's crucial to understand the difference between a furnace and a boiler, how they distribute warmth, and which route may be best for your space. All furnaces generally use the same basis of distribution: an air handler produces and blows hot air into ductwork, which then carries that hot air throughout the house. This hot air follows the path of least resistance and flows out of duct registers located in the floors, base of walls, and sometimes in the ceilings. It's worth noting that this process of moving warmth through hot air can be less efficient than moving warmth through water, as the air is not considered a good conductor of heat.