The Facts About Forced Air Heating

In this article, we’ll share some things you may not know about forced air heating. Maybe you know just enough to get by, or perhaps this might be your first time exploring the topic of forced air heating.

Forced air heating devices use a system of ductwork to circulate warm air throughout a building. In this post, we’ll discuss how they work and also cover some tips to help you understand how they work.

How Do Forced Air Heaters Work?

How do forced air heaters work
How do forced air heaters work

In most homes, forced air heating units are located in the basement or crawlspace. As air rises in the unit, it goes through blowers and into ductwork that carries it throughout the house. In order for this process to work, there have to be several things in place:

  • Air: The furnace unit needs a place to put air so it can heat up and stay up.
  • Blower: The units need to be able to get the air out of the basement or crawlspace and into the ductwork.
  • Ductwork: As we’ll discuss below, it’s not enough for air to just be blasted through a duct. Air has to travel through the right kind of ductwork.
  • Filters: In order for forced air units to work properly, they’ll need filters in place so that allergens, dirt or other contaminants don’t go into the ducts and restrict airflow.
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Types of Ducts For Forced Air Units!

Types of ducts for forced air units!
Types of ducts for forced air units!

When you’re looking at forced air heating systems, you’ll have several options when it comes to ducting. There are a few different types. Here are some of the most popular:

  • Standard Ductwork: Standard ducts are typically made of sheet metal and come in various sizes. They’re affordable, but they can be difficult to upgrade later on.
  • Fiberglass Ductwork: Fiberglass ducts can be bent to conform to edges and corners and are typically easier to control than standard ductwork. Fiberglass ducts have tapered ends that allow you to create right angles without losing air flow.
  • Round Ductwork: Round ducts are used for large areas because they’re efficient and have a more constant airflow than standard ducting. The downside is that they’re difficult to install and can be expensive.

It’s also important to note that most manufacturers will provide you with a filter with your unit, but you’ll need to purchase additional filters in order for it to work properly. Here are some of the more popular types of filters:

  • Standard Filters: Standard filters are made from foam and can be installed easily into the ductwork. They’re inexpensive and easy to maintain, but they don’t catch all particles so you may need to replace them often if your home or office has lots of airborne contaminants.
  • High-Efficiency Filters: High-efficiency filters are made from a special material that’s more effective at catching particulates and allergens than standard filters. This type of filter will typically remove up to 99% of airborne particles.
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We also recommend that you pre-filter your air ducts because these small pieces of foam can trap airborne particles which can reduce the performance of your heating unit. We offer 3M™ VCM (Vapor Capture Media) Pre-Filters in our online store for only $9 each! Just one of these pre-filters should be placed before your blower motor to maximize airflow.

Replacement Filters for Air Duct Cleaning

Replacement filters for air duct cleaning
Replacement filters for air duct cleaning

In addition to installing new filters, your heating and cooling company should also maintain the air ducts. This is especially important if you see a lot of static cling around the unit, which indicates that there are contaminants blocking your air ducts.

If you notice that the air ducts are significantly clogged and you have allergies or asthma, we recommend that you get this checked out by your HVAC company immediately. Sometimes small particles can build up in your HVAC unit and cause enough irritation for you to develop asthma or allergies.

1.Forced Air HVAC Box Filters

Forced air HVAC box filters
Forced air HVAC box filters

These filters are installed in your forced air heater or cooling unit. There are two types of filters: one which is disposable and you throw it away and the other type which is reusable. Both need to be changed at least once a year. These are the ones you see when you open your cabinet where the air conditioner or heater is. This filter helps clean the air that is pushed through your heating and cooling system.

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2.Heat Pump Air Filters

Heat pump air filters
Heat pump air filters

These filters reside on outside of your heat pump unit, which keeps dust, dirt, pollen and small particles from entering into the inside of your home. If these small particles become lodged on the outside of your heat pump, they can cause even more damage to your heating and cooling unit.

Environmental Conditions

Environmental conditions
Environmental conditions

The air coming out of your forced air heaters or coolers will be clean if you do not have any airborne contaminants in the air. If your dirt and dust from work or home are located in the air that is coming out of the unit, then the filter should be changed. If your forced air system is old, dirty and dusty then you might need to replace it with a new one. Old cleaned dusty systems that run perfectly should be replaced as soon as possible because these can malfunction quickly.

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