Common Gas Furnace Parts and Problems
Old gas furnaces were pretty simple; just a burner and a fan to circulate air. Every furnace must have a few components to work properly. The first component between the gas intake and the furnace is the gas valve. Propane and natural gas valves are different because the gases have different densities. However many gas valves can be converted between the types without having to order a whole new part. Call your Denver heating company to see if this is possible. In some jurisdictions, switching or installing new components requires inspection for following the fuel-gas code. Before performing any work on a gas valve, make sure you turn off the gas lines going in and out.
The gas manifold maintains proper pressure for the burner. It is on the gas line between the gas valve and the burner. The pressure is sensitive to the type of gas and the specific furnace, so make sure you get a qualified Denver furnace repair man to set the pressure. Manifolds usually do not require much maintenance unless insects or other foreign material gets inside the gas panel.
For everyone other than HVAC specialists, the burner is the exciting part of the furnace. All burners shoot a flame into a combustion chamber that has a draft sucking air in. At high altitudes like in Denver, the size of the burner hole needs to be smaller because there is less oxygen in the fuel-air mixture at lower atmospheric pressure. If you bought your furnace somewhere else and moved to high altitude, you may have to call a Denver furnace service company to modify the burner outlets.
To keep the burners fed with air, you need some sort of ventilation system. HVAC includes not only the ducts that bring treated air around your home, but a ventilation system for the burner. The furnace needs a way to bring in oxygenated air and safely vent the burnt exhaust.
The combustion chamber is not directly connected to your heating ducts to keep you safe from dangerous exhaust. The heat from the furnace is passed onto the air through a heat exchanger. These heat exchangers are made from thick metal that can withstand the constant high heat from the burner. Heat exchangers should be regularly checked because any crack in the material can release exhaust directly into your house.
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