There are different furnace synonyms for the furnace of your home. They are: water heater, central heating, ventilators, oil furnace, gas furnace, electric furnace, coal-fired furnace, wood-fired furnace, combined heating and air conditioning. Each of these types of furnaces have their own characteristic in operation. The term water heaters usually refers to a small version of a furnace that only heats water. It is used in homes with small spaces and some of them don’t have ventilators. Although this type of furnace can be cheaper than the other, but it does not provide more heat than a furnace that has a ventilator.
Central heating furnace is generally used for medium sized spaces, where a bigger version is not convenient. It is used to provide hot water to the whole house or even a single room. Central heaters are a combination of heater and a temperature controller. It is used for colder areas as well as milder climate. Coal-fired furnace is used for indoor heating. It is not a portable one but it is more expensive than the central heating type. When it comes to older homes, the combination of both heating types is often used.
Another furnace synonym for a hot water furnace is a direct-vent system. This is a restless type of furnace, where the hot water passes through a chimney, and an infrared sensor makes sure that the liquid gets into the right part of the furnace. However, some buildings, especially older homes, don’t have an available chimney and the boiler might not be able to transfer the heat into the room. Therefore, it is a better option to use a combination of an infrared sensor and a vent.