Natural Gas
Sometimes referred to as forced air systems, these heating systems burn natural gas, propane, oil, or use electricity to heat your home, and are the most commonly used heating systems. Air is heated in the furnace and then distributed throughout your house via ductwork.
when you said gas furnace you said the answer. natural GAS
A gas furnace works by heating up the element inside the furnace. The gas comes into the furnace and is lit by a spark that comes from the pilot light. The fire heats up the element and air from the fan pushes the heat into the house.
Many different ways, examples include: electric furnace heat pump gas furnace kerosene furnace wood stoves boiler setups passive solar and the list goes on.
A gas furnace is a furnace that operates to keep your house warm with the use of gas. Gas furnaces are very energy efficient furnaces, and are the most common furnaces used in North America.
The purpose of the vent on the furnace is to ventilate flue gases out side of the house.
This is how a furnace heats your home. When the thermostat calls for heat, a signal is sent to the gas valve. If you have an older unit, the gas valve checks to see that the thermocouple sees the pilot and if it does, the gas valve opens to send gas to the burners. If you have a newer furnace, the thermostat sends a signal to start the pilit ignition sequence (either spark or hot plate) and then the flame rod sees the pilot (of the hot plate is up to temp.) the gas valve opens to send gas to the burner. The fan control will then send a signal to the blower to start up. As the temp rises in the room, the thermostat sends a signal back to the gas valve to close as it reaches the set point on the thermostat and the blower continues to run until the set point on the fan control is reached and it shuts off ending the cycle. If you would like futher in depth information, check out my book on Amazon called Forced hot air furnace - troubleshooting and repair.
Yes
Not knowing what kind of furnace you have makes answering this difficult. What type of furnace do you have (gas,electric, oil) and how old is it?
it will heat as long as the gas is on and your pilot is still lit, you would have to call your gas company to turn it off.
on my honeywell gas furnace says aux heat is on when heat is on
Your location matters. If in Florida heat pump in more northern climes furnace & ac.
The energy source is the same as for heating anything. Gas,Electricity, Burning any fossil fuel. in a boiler (furnace) with water running in heat exchanging coils or manifolds. When heat is needed a pump circulates the hot water through the radiators and back to the furness.
flame sensor
Any fuel that can be burnt has chemical energy. Once it is burned, that energy will of course be converted into heat energy.
That will depend on the cost (and availability) of gas in your area, when compared to electric costs. It will also depend on the climate. At very cold temperatures (below 40 F) the heat transfer element of an air/Freon heat pump does not deliver heat, and the less efficient electric heat kicks in. In a climate that has long periods of below-freezing temps, a gas furnace may be more economical to operate.
So in order for a furnace to heat up in the first place, there needs to be a fuel or substance that heats or absorbs heat. This can be gas, coal, or charcoal. In addition, the fuel or coal, the fire or heat will begin to well heat, then heat will begin to spread. Causing heat, or humid to form in the room you are in. HOPE THIS HELPED:)))))
The most important risk in using a gas furnace is carbon monoxide. If the heat exchanger in a gas furnace is damaged, carbon monoxide could leak into the air, causing a health hazard. A carbon monoxide detector and regular inspections would greatly reduce the risks and your worries in using a gas furnace.
When purchasing a gas wall furnace you should look for a variety of different features. These include a insulated blower compartment to reduce noise, heat exchangers that resist corrosion and ensuring the gas wall furnace won't lose heat and is energy efficient to save you money.