What are the main parts of a furnace?

What are the main parts of a furnace? The main parts of your furnace are the control system (thermostat and electrical controls), gas valve, burners, heat exchanger, blower, and duct and ventilation system. When your furnace creates heat, combustion gases are vented out of your home via a flue pipe.

What is the bottom of a furnace called? This photo shows you how the furnace is divided into two cabinets: the burner cabinet (top) and the blower cabinet (bottom). This is reversed in a down-flow system where the ductwork is located below the unit.

What are the 4 categories of furnaces? 4 Main Kinds Of Furnaces Basically there are four main classifications of furnaces: propane, natural gas, oil, and electric. Some are more economical than others, while others are lower cost. There are pros and cons to all these factors for your home. Propane: These kinds of furnaces need propane in order to operate.

Is the furnace part of the AC? Both your forced air (furnace) and central air (AC) systems use the same parts to cool and heat your home. The outdoor unit isn’t connected to the furnace at all—but they both utilize the same distribution system (vents, plenums, and ducts) to cycle cool air into your home.

What are the main parts of a furnace? – Related Questions

How many parts are in a furnace?

The basic parts of a gas furnace are the burner, heat exchanger, ductwork, and ventilation pipes or flue. But there are other mechanisms and parts that combine to deliver clean, warm air to the rooms in your home.

What is the third component in the furnace called?

Forced draft. The third category of furnace is the forced draft, mid-efficiency furnace with a steel heat exchanger and multi-speed blower.

How do you tell if your furnace is upflow or downflow?

Furnaces located in an attic or upper story are most likely downflow furnaces. When it’s located in the basement or crawlspace of the home, you likely have an upflow furnace.

What causes a furnace pressure switch to fail?

Check for a clogged hose port or cracked hose running from the draft inducer motor or condensate collector box to the pressure switch. These problems can cause the switch to trip or fail.

What is the most common furnace?

The most common type of furnace in homes today is the natural gas furnace, which uses gas piped in from the municipal line. Gas jets along a burner ignite to create the hot combustion gas that raises the temperature of air, which fans then circulate through the ducts.

What does a new gas furnace cost?

A new furnace costs $1,500 to $6,500, depending on the model you choose. The average cost of installing a mid-efficiency furnace is $1,500 to $2,500. Mid-efficiency furnaces have an annual fuel utilization efficiency (AFUE) rating of 80% to 89%.

What type of heating is a furnace?

A furnace works by blowing heated air through ducts that deliver the warm air to rooms throughout the house via air registers or grills. This type of heating system is called a ducted warm-air or forced warm-air distribution system. It can be powered by electricity, natural gas, or fuel oil.

How far can an air conditioner be from the furnace?

Rule of Thumb Lateral or Horizontal A/C / Heat Pump clearance distances. A rule of thumb is to maintain at least two-feet (24″) between the A./C compressor/condenser unit and any nearby obstruction such as a building wall, shrub, or fence.

Can a furnace cool a house?

According to a heating service professional, running the furnace fan can also help reduce the humidity levels in your home during cold, frosty weather by running air through the evaporator more consistently, which allows the system to pull more moisture out over time.

Does furnace and AC use same blower?

If you are looking to replace your furnace, then it might be in your best interest to replace your air conditioner as well. This is because air conditioners and furnaces are dependent on each other in a lot of ways: 1) Both devices use the same air blower to spread warm/cool air throughout the home.

How does a furnace work?

A forced-air furnace heats your home through a heating cycle that looks like this: The flames heat up a metal heat exchanger and exhaust out of the flue. The heat exchanger transfers its heat to the incoming air. The furnace’s blower forces the heated air into the ductwork and distributes it throughout the home.

What does a furnace capacitor do?

Capacitors are a part of the fan motor in your furnace. They provide a steady supply of electricity to the fan motors (used to help the blowers move hot air through your system). Obviously, both types of capacitor need to be running smoothly in order for your furnace to function.

What are the functions of a gas furnace?

The gas combusts inside the heat exchanger, creating heat that is used to heat the passing air. The design of the heat exchanger can add energy efficient operation of a gas furnace.

What is the output of furnace?

The input BTU is the amount of energy a furnace requires to run, while the output is the amount of energy delivered to your home as heat. Many experts recommend that you buy a furnace which delivers 40 to 45 BTUs per square foot. You should analyze your home to see what size furnace you need to keep warm.

Which part of the furnace is the blower?

The blower motor is usually located near the base of the furnace in the blower chamber, and it resembles a hamster wheel. It contains a fan (or blower) that sends an even current of air through the appliance. Air moves past the heat exchanger and into the supply plenum.

Does a furnace heat water?

Furnaces heat air and distribute the heated air through the house using ducts. Boilers heat water, and provide either hot water or steam for heating. Steam is distributed via pipes to steam radiators, and hot water can be distributed via baseboard radiators or radiant floor systems, or can heat air via a coil.

What is the difference between a highboy and lowboy furnace?

Upflow furnaces can also be described as a “highboy” or a “lowboy”. For the homeowner, the important distinction between the two is that the lowboy is shorter — typically around 4 feet in height. The lowboy can be installed in low-ceiling basements. A highboy furnace is typically around 6 feet in height.

When should you use a downflow furnace?

Downflow furnaces blow heated or cooled air downward and are installed in attics. They are the best choice for warm climates where air conditioning is used more than heating.

How do I know if my furnace pressure switch is bad?

If the amperage starts to go up substantially, or the motor gets noisy or too hot to touch, there is potentially a motor issue. Check the tubing that connects the pressure switch to the draft point. Look for cracks, brittleness, and crud or water inside the tubes. If you see anything, clean it out.

How much does it cost to replace a pressure switch on a furnace?

The pressure switch also protects your home from gas leaks, and it shuts down the furnace in the event of a mechanical failure. Without the pressure switch, your home could be at risk for carbon monoxide problems. A pressure switch with labor generally costs between $50 and $150.

Can a furnace explode?

A furnace explosion is usually the result of ignition and instantaneous combustion of highly flammable gas, vapor, or dust that has accumulated in a boiler. The effect of the force from the explosion is often much greater than the boiler combustion chamber can withstand.