The answer to 'which is better furnace or' is that both furnaces and boilers have their own advantages and the best option depends on your specific home and heating needs. Furnaces are generally more affordable to install and operate, while boilers can provide more even, comfortable heating and are often better suited for homes with radiators or radiant floor heating.
Furnaces use forced air to distribute heat through ductwork, while boilers circulate hot water or steam through pipes to baseboard radiators or radiant floor systems. Furnaces are typically less expensive upfront but can have higher energy costs, while boilers generally cost more to install but can be more energy-efficient in the long run. The right choice depends on factors like your home's size, layout, existing heating system, and your budget and energy efficiency goals.