The answer to 'furnace vs' is that a furnace and a boiler are two different types of home heating systems with distinct features, benefits, and use cases. A furnace is an air-based system that heats air and distributes it through ductwork, while a boiler is a water-based system that heats water and distributes it through pipes.
Furnaces are generally less expensive to install than boilers, and they can heat a home more quickly. They are also often easier to maintain and repair. Boilers, on the other hand, can provide more even and consistent heating, and they are often more energy-efficient, especially in older homes. Boilers are also a good choice for homes with radiant floor heating or steam radiators.