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Gas furnace is a heating appliance that uses up natural gas or propane to heat up your home or building. Gas furnace is an effective alternative to the electricity driven or oil or coal furnaces. In case of gas furnaces, the gaseous substance acts as heat generating fuel. Gas furnaces make use of a heater exchanger to heat up the air in your room. The heat exchanger is actually a metallic box inside which lies the pilot light. The pilot light is connected to both the fuel reserve and a thermostat and thus the house owner can adjust and regulate the heat produced from anywhere and he or she will not have to go to the furnace for that purpose. Once the thermostat is adjusted, the fuel line is thrown open, causing the pilot light to produce a larger flame. This causes the heat exchanger to turn hot. Air enters the heat exchanger by means of the ductwork. The air is heated inside and then blown out from the other side. The ductwork which carries the air out as well is linked up with the heat registers placed in each room and in this way the ambient air through out the house is heated up So now you know how gas furnace functions. Let us now take a look at the various gas furnace types for home: • Communicating furnace: The communicating furnace communicates with the owner. Alerts reach the owner’s home and he is all the time well informed regarding what the furnace is up to. By means of phone he can remotely adjust furnace settings such as putting the furnace on a more powerful or energy-efficient setting and so on • Two-speed furnace: Two-speed furnaces are very quick and speedy in changing the room temperature. They also possess a de-humidification setting by means of which the owner can get rid of the excessive humidity in the house. These furnaces obviously produce much heat and have heat resistant controls attached to the heater. • Retrofitted furnace: Retrofitted furnaces are known for their energy efficiency. They possess vent dampeners that prevent energy from escaping through the furnace chimney. Retrofitted furnaces are however a little expensive when compared to other types. • Filtered gas furnace: These furnaces have the feature of trapping air borne particles when the air circulates through the furnace’s heat exchanges. This type of furnace is quite beneficial especially for people suffering from respiratory diseases like asthma. • Dual exchanger furnace: This type of furnace burns the gas twice and thereby gives maximum heat output. It is, as the name suggests, fitted with two exchangers. Stainless steel and plastic usually go in to the making of the secondary exchanger. • Zoned furnace: Zoned furnaces gather info from the multiple thermostats through out the house and transmit heat in appropriate amount to the various zones so that each zone differs from the other in temperature. This feature is especially suitable when the various zones or areas of the house differ from each other in heat requirement. So these are the various gas furnace types for home. Know your requirement and then opt for the one that suits you best.
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