How to Keep Your Air Conditioning Ductwork Clean

Air ducts are a great place to collect dust, mildew, mold growth, and other debris. These contaminants are then distributed throughout the home. If your allergies are becoming worse, or you notice an unpleasant odor, it may be time to schedule a cleaning.

Sheet metal ducts are nearly rustproof and durable, promoting energy efficiency. Flexible aluminum ducts are suitable for use in tight spaces and are inexpensive. However they are susceptible to damage from pests.


Leaks in ducts can cause the conditioned air to escape and this can decrease the efficiency of energy used in a home. Leaks are most common where duct segments join particularly at joints. The ducts can become loose and break off in time due to aging gravity, gravity, and other causes. Sealing these connections can stop air leakage. However, it’s recommended to employ a professional HVAC technician to make extensive repairs and seal your ducts.

You can identify indications of leaks in ducts by conducting a visual inspection in your attic, basement and crawlspaces where the runs of ductwork are exposed. Check for areas where the ducts are damaged or kinked that indicate blockage and require to be sealed. Verify whether the joints or seams are warm. Be aware of any whistling sounds that occur when the HVAC system is operating. If you hear these sounds it is likely that there are duct leaks in that area.

Unexplained hot and cold spots are another sign of a leaking pipe. This is due to air leaks that could stop the HVAC system from cooling or heating certain rooms.

Even if the activities of the household are unchanged the ductwork’s gaps can distribute dust throughout a structure. Dust mould spores, mites and other allergens can cause asthma and allergies in family members.

In addition to distributing dust, leaking ducts may also let toxic fumes enter the living space. If you store paint thinners or pesticides in your basement, for instance, leaking ductwork can send these chemicals into the living space and expose your family members to the fumes. This problem is especially dangerous when you have elderly or children living in your home. A professional can install an indoor air quality monitor that can detect these dangerous gases and alert you to their presence in the air.

High Humidity

In humid, hot climates such as Florida, air conditioning ducts are more prone to sweat than they should. This is a serious issue as sweaty ducts permit excessive moisture to get into homes, which can lead to mold growth and poor air quality. There are several things that homeowners can do to reduce humidity and ensure that ductwork is dry.

First, reduce the amount of water that is used in your home. This means reducing the amount of water used to cook, bathe, and decorations like aquariums. Additionally homeowners should consider using a dehumidifier in humid climates to make the house drier.

It is also essential to check the ductwork on a regular basis for signs of mold or other issues. If there’s any issue the ducts need to be cleaned and sealed by professionals.

Leakage is another issue that can be found with ductwork. Usually, this happens because of joints that have been installed incorrectly or seals that can lead to gaps and cracks. The best way to prevent this is to ensure that all joints and connections are properly installed and using top-quality materials like metal.

Air ducts are made of different materials. Each kind has its own distinct characteristics that determine how well they perform. Polyester air ducts are least expensive, but they are the most brittle and are prone to damage from pests and the elements. Ducts made from aluminum are a bit more expensive but they last longer and can resist insects.

Airflow may be limited by objects like furniture, toys and other objects. The blocked ducts can impact the airflow as well as the efficiency of your system’s energy usage.

A blocked duct can also lead to uneven cooling and heating and cooling, which is an issue in older buildings that are poorly designed ductwork.

A homeowner who suspects they have a problem with leakage or humidity should contact an HVAC service. The expert will evaluate the ductwork and recommend any repairs or replacements needed. It’s crucial that the ductwork is easily accessible, as it will impact the speed and at what cost the professional can finish the job.


Mold in air conditioning ducts could occur when two factors come together such as warm temperatures and moisture. The condensation causes the moisture on the inside of the air ducts, which creates a humid environment where the spores of mold thrive. The spores can then be transported throughout the home by your HVAC system, and trigger allergy symptoms in household members.

The presence of mold around the vents is a good indication that you should employ a professional HVAC for cleaning your AC. Dust particles that are black can be an indication that mold is thriving. If the area appears damp or slimy then there is something wrong. If there is a musty smell that is an indication of a mold spore.

Other signs of a mold issue in your air ducts could be ripped or torn insulation, rips on the vent covers rodent droppings and cockroach shells. If the mold problem is severe, you may observe decaying wood or sliding metal.

The most common type of mold in air ducts is Stachybotrys which can cause toxic mold. It is usually found on drywall and wood surfaces but can also grow in the spaces between the walls and rafters of your home. Stachybotrys may cause allergies, irritated eyes and throat, as well as respiratory issues.

The signs of mold in air ducts include coughing, wheezing and shortness of breath. Children and the elderly may experience more severe symptoms. Air ducts can cause nausea, fatigue, and headaches.

Homeowners can clean small areas of mold from their air ducts, but it is not recommended to clean any large patches of mold. The safety issues involved are the reason for this. Mold spores can spread quickly through the air and are difficult to get rid of once they begin growing. Besides, there is no guarantee that the homeowner has successfully eliminated all the mold and prevented it from resurfacing. A professional can safely remove the mold from air ducts and ensure that it doesn’t recur.

The best method to avoid mold in air ducts is to make sure that the air filters are cleaned regularly and that the ducts are cleaned every few years. Following these steps will help stop humidity and condensation which can promote the growth of mold.


Allergies can make summertime activities difficult, leaving you with itchy eyes, runny noses and a general sense of discomfort. Keep your home free of allergens to fight allergies. The air conditioning ducts can be an ideal habitat for allergens that trigger allergy symptoms.

Allergy triggers include dust mites mold spores, pet dander and pollen. These particles can get transported into your Fridley home via clothes or shoes, and then dispersed throughout your home by your HVAC system. Leaks in your ductwork can allow these particles to sneak through and be circulated throughout the home.

The best way to combat these allergens is to do an extensive cleaning of your air ducts. A professional duct cleaning service will eliminate these particles and help you breathe more comfortably.

A clogged air duct may also contain bacteria. Bacteria can make you sick and worsen allergies, particularly when you already suffer from allergies. The bacteria can spread when the air passes through your ducts and the vents in your home.

When ducts are filthy the bacteria may build up in them and be circulated around your entire home when the air conditioner is on. This can lead to respiratory problems and in certain cases more serious illnesses.

Many people, especially during the spring and early summer months are able to bring allergens like pollen, mold and dust mites into their homes on their clothing and shoes. This is the worst time of year for these things, and they’re likely to be settling in areas where they won’t be disturbed until the following spring or summer. Air ducts are just one of those areas, and when they’re not regularly cleaned the allergens will remain in your air vents until you turn on your heating or cooling system.

Dirty air ducts are a major problem for homeowners. They can lead to higher energy costs, as well as uncomfortable living conditions. Fortunately, these problems can be avoided by cleaning your ducts as well as sealing any leaky ducts by using an Aeroseal company. An Aeroseal technician will use the duct sealant with a pressurized system to block air from entering your home through leaky ductwork.

Explore More

Heating Ventilation and Ductwork

June 6, 2024 0 Comments 0 tags

Heating Ventilation and Ductwork When we talk about heating ventilation, we are referring to the mechanical system that draws air from outside and circulates it inside the building. The process