What is the difference between a boiler and a furnace?
A boiler heats water, which is then circulated through pipes and to radiators to heat your home. A furnace heats air, which is circulated through duct work to heat your home.
Actually, there is an easy way to remember: a boiler uses (hot) water to heat your home and a furnace uses warm air (also referred to as forced air). please note: this answer directly from site listed below
boiler works on stem your house and a furnace use hot eater to heat your house one you can use all year round the other you use only in the winter
A boiler uses oil, gas or electricity to generate hot water and in some cases steam, which is piped to baseboard radiation systems on the perimeter of the house. A furnace burns oil or gas to heat up air which is forced by a fan through a large ducted system and blown through registers in various parts of the house. Generally speaking, a cast iron boiler for a baseboard system has more than twice the life expectancy of a furnace for a hot air system.
A boiler is a hot water system that heats your house by pumping hot water to radiators threw out the house. Although this system works very well, the only draw back with that is you would have to run separate duct work in your home if you want central air. Now if you are talking about a furnace which is used to heat your home, it is used with duct work installed and warm air is forced into each room. That's why they call it a forced air system. What is nice about a forced air system that you can install a central air conditioning system to the same duct work and use that to cool your home during the summer.
