What Is Forced Air Heating?



In this article, we discuss the components of forced air heating and explain how forced air heating works. We also provide information on why forced air heaters might not be the best choice for your home and offer suggestions for other types of heating systems.



What Is Forced Air Heating?

What is forced air heating
What is forced air heating?

Forced air heating uses air blown by a fan through a duct system that heats the air before it is distributed throughout your home. A forced air system is the most common form of heating in North America, and in residential settings, forced air systems are typically used with central heating, which uses radiators to heat individual rooms.

Forced Air Heating Components

Forced air heating components
Forced air heating components

The components of a forced air heating system are:

A home’s forced air heater or furnace , which contains the heat source, an electric motor to turn the fan blades and blower motor, and a thermostat. The furnace also contains a heat exchanger for warming the air as it circulates through the unit.



An air distribution system , which is a system of ducts that connects your home’s forced air heater or furnace to the room or rooms you wish to heat. The distribution system contains metal ducts, or metal tubing, and fittings that connect the furnace to the ductwork.

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A central forced air heating system , which is a network of radiators filled with water or other fluid that heats the air before it is distributed throughout your home. Central heating systems use radiators, thermostats, and other components to heat air in spaces such as rooms and bedrooms.

A forced air system’s furnace will work most efficiently if the following conditions are met:



The air inside the distribution system is uniformly heated, and the air is not too cold. The temperature of the outside wind entering your forced air heater needs to be below 55 F (12 C), or else it will not be warm enough to heat your home. The heater must also be located near outside wall cavities for optimal heat transfer. One reason that ducts can act like a wind tunnel is because there are no barriers in between the duct and outside wall cavities. If there was a barrier, which allowed less than 20 percent of wind to pass through it, no more than 5 percent of the outside air would pass through it.

Common Issues With Forced Air Heating Systems

Common issues with forced air heating systems
Common issues with forced air heating systems

Below we discuss some of the most common problems with forced air heaters and furnaces, as well as tips on how to fix them or prevent them from recurring in the future. If your forced air heater is not working properly and you are unable to fix it yourself, call in a professional to check things out for you.

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A furnace that is too loud. If your furnace is too loud, it might be: There is a dirty filter—replace it to get your furnace back in working order. The fan cage has been damaged—replace the cage as needed. The blower motor has hit a wall or has been damaged—replace the motor. The motor’s bearings have gone bad—have a professional check the bearings of fan motors to see if they need replacing. A furnace that smells like burning plastic when turned on. Most people do not know that the smell of burning plastic is actually the smell of plastic that has been overheated. They assume that their furnace is broken and call a professional to get it fixed. This type of smell can often be remedied by cleaning or replacing the filters within the furnace and fan housing. If this does not fix your problem, then you probably need a new system installed or a new furnace installed, such as an E-Coil Heater Furnace. The blower motor might be damaged—if this is the case, have a professional ask you where the blower is experiencing problems, so they can get to it with their testing equipment. If the blower motor has been damaged, then your motor will have to be replaced with a new one.

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If you want to check if whether the problem is within your furnace or outside of it, consider these problems when you are checking:

– Your furnace is noisy every time it kicks on: this can be due to broken parts or even bearings in your system. It could also be due to a blockage in the vents that are passing air through it. If you hear noise every time it comes on, clear any blockages or replace some parts. If this does not work, then you should have someone else look at what could be causing the trouble and call a professional to figure out how best to fix things.

One of the biggest reasons to hire a professional is that they are trained and certified so that you know what they are doing is safe, and they will be able to find and fix things in your home that you never would have known were there or could have encountered yourself. You want someone who has been trained for this job so that everything goes right, and it saves time as well as aggravation. Your home’s plumbing system can be broken without you even knowing it if you do not hire someone to check things out, so it is a good idea if you ever have even the tiniest concern or question.



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