How Does A Furnace Work

How a furnace works repair company

The operation of furnaces differs depending on their type and the thermal agent that is being used. For example, a condensing gas furnace, which is arguably the most popular for residential heating, has a rather complex operating process.

In the first phase, the gas burns in the presence of oxygen and a flame, and then the water turns into vapors. In the case of conventional gas-fired furnaces, these vapors are removed along with the rest of the gases, but when it comes to condensing units, the vapors are converted back into liquid, a process called condensation. The transformation of gases into vapors involves a certain level of energy consumption, but it will release energy in the form of heat.

The last step in the operation of condensing gas furnaces is to take over the heat released by the transfer surface to preheat the circulating thermal agent.

The principle of operation differs in the case of a wood furnace, which has a forced circulation heating system. Specifically, the fuel – the wood, in this particular case – after burning, produces thermal heating and domestic hot water.

Of course, the operating process also differs depending on the type of furnace. For example, a conventional wood furnace operates more like a stove, with direct burning of the fuel, but there are also furnaces operating on the principle of wood distillation. In both cases, you need a dry solid fuel, such as wood or coal.  For all your HVAC home needs call on