Do you find it hard working through the afternoons because your air conditioning unit doesn’t cool your rooms as required? Maybe you noticed that your indoor air isn’t as fresh as you would love it to be. Have you been hearing any disturbing whistling or banging sounds emanating from your HVAC? If you’ve been nodding through these questions, your ducts might be in trouble. Let’s take a look at six HVAC problems commonly caused by faulty duct-work. 

Inadequate Airflow

According to, clogged and dirty air ducts tamper with the quality and inflow of air in your home or workspace. Leaky ducts don’t cool your home sufficiently. A portion of the conditioned air gets lost before it gets into your house. Inspect your registers when trying to pinpoint the cause of inadequate airflow. If you notice that air isn’t blowing in as it should, you probably need a change of duct-work or clean them thoroughly.

Clogged Filters

Take some time to remember the last time you changed or cleaned your air conditioner’s filter. If you can’t recall, this could be the number one reason why you have been experiencing poor indoor air quality and inadequate airflow in your space. Why is a clean air filter so important? An air filter within the HVAC system primarily eradicates debris and dust from the air and ensures clean and good quality airflow. It also keeps the dirt from building up in your ducts. With clogged vents, come clogged air filters, which gradually impede airflow leading to those cold and hot spots and musty air. Accumulated debris damages various sections of the HVAC as well. 

Experts recommend changing the air filter as frequently as possible. Also, consider cleaning them regularly at least once a month or at a maximum, after three months. 

Cold and Hot Areas

Cold and Hot AreasWhen inspecting the indoor air quality from room to room, do you notice that there is some irregularity despite having an AC in your home? You may notice that the level of comfort and temperature change drastically as you move from one side of the house to the other. This could be a probable sign of leaks along the ducts connecting the air conditioners in various rooms. A leaking air duct means that cool air circulating through the HVAC system often escapes the vents and seeps into the wall space or attic. This typically results in certain areas of your house, not enjoying the cool and consistent airflow. 

Bizarre Noises

This is probably one of the most frequent complaints about air conditioning systems. Your air conditioner will emit some sound when starting up, running, or shutting down. This is normal. However, there are times when your HVAC system produces unusual sounds that indicate your duct-work could be in trouble. As your system ages or continues to work harder due to inefficiency, your duct-work is prone to get damaged. Damage to the vents can cause a whistling sound within your unit. Due to uneven air pressure, air ducts made from rectangular sheet ducts may cause unusual popping sounds. Your HVAC technician will help determine the origin of the bizarre noises and solve it. 

Unpleasant And Unusual Odors

HVAC systems are instrumental in ensuring excellent indoor air quality. It beats the equipment’s purpose if it produces unusual and unpleasant odors. While most people may suspect faulty components within the central AC as the source of bad odor, your air ducts could be the problem. High levels of moisture in the air and vents create the perfect environment for mold and mildew growth. 


Also, overlooking duct-work cleaning and maintenance allows insects and rodents to deposit fecal deposits in your ducts. These instances can leave unpleasant odors. If you notice that your HVAC has been blowing in bad smell into your space, schedule an inspection service to pinpoint the problem, and solve it. 

High Utility Bills

Leaky and clogged duct-works force your HVAC system into a state of inefficiency. With inefficiency, comes high utility bills. On average, most households spend about 30 cents of every $1 on heating and cooling needs to enjoy the comfort in your home and workspaces. It gets worse with leaky ducts as your HVAC works harder to cool your home while still accounting for lost air. Duct leaks are notorious when not solved on time. They are caused by a variety of things, including local building codes, quality of the material of the duct-work, age of the house, and type of construction. Consider sealing the duct leaks appropriately to ensure that the total amount of heated or cooled air in the supply fan gets to the target space in the same amount. 

There you have it! A list of six common problems caused by faulty duct-work. As discussed above, ducts are essential components of the HVAC system. Clean and properly functioning vents ensure that your home receives adequate quality air consistently without tampering with your energy bills. If you suspect that you have faulty duct-work, call in an HVAC technician to help you fix the mess.

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