How does furnace work

In place of gas-powered burners, the ignition activates heating elements that contain conductive coils. As current passes through the coils, they begin heating the air for the blowers to handle. The more heat the thermostat calls for, the more heating elements turn on. This sounds deceptively simple, but furnaces contain many components to ensure that the heat exchange and distribution runs smoothly and without safety concerns.

Trying to diagnose or fix a malfunctioning thermostat on your own is not recommended unless you have extensive HVAC training and the appropriate tools. You should rely on experts to handle whatever ails your furnace, no matter its power source. Gas furnaces can lead to carbon monoxide poisoning, and electric furnaces may cause high voltage shocks. Keep your Eugene, OR heating system—whether furnace, heat pump, radiant floor heating, or geothermal—running effectively for you through fall and winter: get the advice and help of Comfort Flow Heating.

Twitter Link. Request Information. Commercial HVAC. The thermostat measures the temperature of the ambient air surrounding it. When it reads an air temperature lower than what it has been set to regulate, it sends a signal to the furnace to turn on.

The two most common types of furnaces found in Calgary are natural gas and electrically powered. The thermostat will regulate the air temperature by engaging the furnace whenever the temperature drops below your specified amount.

Modern furnaces are far more efficient at this process compared to older, antiquated furnaces. They also utilize a series of fail safes and safety mechanisms designed to protect both your home and the furnace from failure.

June 11, July 12, May 17, June 13, How Does a Gas Furnace Work? A Basic Understanding of the Heating Cycle The most basic heating cycle can be explained in a few easy steps. The fuel source, either natural gas or propane in this case, is ignited in the burner.

The flame starts to heat up the metal heat exchanger and exhaust is sent out of the flue. The heat exchanger transfers heat to the cold air inside your home. The blower then forces the warm air into the ductwork of your home where it is distributed throughout the house.

Warm air fills each room, while colder, denser air is brought back into the furnace by the return ducts to furnace where the process repeats itself.

When you change the temperature on the thermostat , it prompts the control board inside the furnace to begin the heating cycle. To do this, the ignition switch is turned on. The gas is brought into the combustion chamber via gas jets. Then, a pilot light in older furnaces or a hot surface ignitor ignites the gas jets.

The heat exchanger , which is a set of coils or looped metal where air passes over, is heated by the lit gas. Over the heat exchanger , air warms up as it passes over the coils or metal.