Why HVAC Airflow Is Important

Man Looking in an HVAC Air Vent

In order for HVAC systems to provide the ideal heating and cooling performance, good airflow is essential. Generally, air that is conditioned moves in an average residential home at a rate of roughly 1,000 cubic feet per minute. This conditioned air passes through ducts, filters, and vents. As long as all the components of the system are in good working order, you can expect reduced operating costs, high energy efficiency, temperatures that are balanced and durable components.


many homeowners experience HVAC airflow problems which result in less than ideal temperatures. For instance, you might experience uneven temperatures in your house; some rooms can be warmer or colder than others.

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Why HVAC Airflow Is Important

The following are some of the common reasons why homeowners may experience airflow problems.

Restrictive HVAC Filters

senior man changing a dirty air filter in a furnace

HVAC air filters play a very important role in improving the air quality inside your home, as well as preventing damage to the system. It is the air filters that trap things such as pet dander, dust, carpet fibers, mold spores, and bacteria. Basically, they help to protect people’s health.

But, in order for them to work optimally, they have to be replaced on a regular basis…

at least every couple of months. This is because, over time, the accumulation of particulates such as dust and pet dander begin to obstruct airflow into the system. Make sure that you check your filters every month to see if they need replacing.

Also, make certain that you make use of filters that are right for your particular unit.  You might think that in order to enhance your indoor air quality, you have to switch to different filters that have a high MERV rating. However, if your system cannot handle such filters, the filters can actually restrict airflow. For the system to cope, you might have to adjust the fan speed. Also, note that some of these high-efficiency air filters need to be replaced more frequently.

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Leaking HVAC Ducts

image of technician inspecting hvac ductwork

It is not uncommon for air ducts to develop cracks and holes over time. There are several reasons for leaking HVAC air ducts; including too much air pressure, poor quality materials, pest infestation or incorrect installation. It has been found that approximately one-third to one-half of the air that passes through the ducts ends up leaking in most houses. This is especially true in rooms that are further away from the source.

In winter, the hot air released by the furnace may not get to such rooms. Even if you set the temperatures on high, those rooms will still not be warm enough for the occupants. If you have leaking air ducts, it is important to contact an HVAC expert. An expert can find and permanently seal such leaks.

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Blocked HVAC Vents

If you notice that there are certain rooms or areas in your home that do not respond to system settings, it could be that the HVAC vents are blocked. It might be necessary to have a look at the vents leading to those rooms or areas. It is possible that something, such as a piece of furniture or a long curtain might be blocking the air vents. It could also be that the previous owner closed the grates. If the problem is due to an obstruction, once that obstruction is removed, the system should start working effectively.

Closed Damper Valve

image of a closed hvac air vent

All HVAC units have a way of regulating airflow. Most of the units come with damper valves that increase or decrease airflow to specific zones. If there are no people in a particular room, the valves can even stop the flow of air to such rooms. While some of the valves are controlled manually, others move automatically as per the thermostat‘s settings. If you have valves that are controlled manually, check to see if they are in the right position and make adjustments if necessary. If your valves are controlled automatically, it is best that you contact an HVAC contractor to check the electrical system.

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Crushed Flex Duct

image of a hvac ductwork

Air ducts are made using various materials. You can find ones that have thick metal and these ones are the most durable. There are also types that use flexible plastic, particularly for bends. Even though the ones made using flexible plastic have their advantages, they are prone to damage. If you step on them accidentally, they can easily get crushed by your weight, leaving them flattened. This in turn makes it harder for air to flow through. You can try to get them back to their original shape. But, if they now have cracks or holes, they have to be replaced by an HVAC contractor.

Wrongly Sized Ductwork

HVAC systems have many different parts. These multiple parts must work together in order for the unit to work efficiently. As long as some parts are incompatible, you will have issues with your unit.

For instance, if the ducts are too big the air pressure will be too low and the air will not be able to reach the furthest corners of your home. This can be compared to making use of a large hose for a small faucet.

On the other hand, if the ducts are too small they restrict the flow of air. To avoid these problems, make sure that your ductwork is designed by a professional HVAC contractor who bases his work on the scientific analysis of each home.

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Inadequate Return Air Vents

When air moves from the air conditioner or furnace to various parts of your home, it has to come back. In the event that the returning air is not sufficient, there are certain areas of the house that may have increased air pressure or reduced airflow. If the cause of this problem is a flaw in the design of the system, you should call a new contractor to come and fix the issue.

Airflow plays a pivotal role in every high-performance HVAC system. If you notice that there are uneven temperatures in your house or you start experiencing discomfort as a result of a malfunctioning system, chances are that you have poor airflow.

The best step to take would be to hire a professional HVAC contractor to find out the root cause of the problem, and then provide a solution. With the assistance of a contractor, you can expect reduced energy bills, improved energy efficiency, and even temperatures.


Contact Point Bay Fuel For All Of Your HVAC Needs


Point Bay Fuel offers unsurpassed heating and cooling services in Monmouth and Ocean Counties, New Jersey. We only hire top-certified technicians who will provide top-notch HVAC tune-ups, repairs, fittings, as well as replacements. All our technicians have the required skill and experience to service your HVAC system appropriately.

Point Bay Fuel guarantees the most reasonably priced heating and cooling services in the area. Our maintenance services have many benefits, including improving your comfort levels and increasing energy efficiency whilst minimizing your home heating and cooling expenses.

In the event that you need an HVAC repair or replacement unit, we are able to recommend the ideal one for your home while making certain that we remain within your budget. For complete customer satisfaction, all our services are backed by a guarantee. In order to schedule a service appointment, give Point Bay Fuel a call today. We also offer free, in-home estimates.

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