5 Things You Don’t Want to Find in Your Air Ducts

May 16, 2025

The ductwork that distributes your heated and cooled air throughout your home is out of sight and, often, out of mind. In the majority of spaces, the exterior of the ducts is not visible, because it’s tucked into your attic or the spaces between walls. And the interior of the ducts is definitely not visible. Do you have any idea what could be going on in there?

There are a variety of things that can be present inside your ductwork, and whatever is in there will be blown out your vents and into your home for you to breathe. Is it a good idea to have your air ducts cleaned? Once you know about these things that might be inside your ducts, you’ll definitely think so.

1: Dust and Dirt

Air is circulated through your heating or air conditioning system, through your ducts, out your vents and into your home, and back through the loop again and again. When dust settles out of the air in your living areas, it can be wiped, swept, or vacuumed up. What if you couldn’t clean that dust? Can you imagine how much would build up in the course of a year?

Now think: how long has it been since your air ducts were cleaned? Even an ordinary amount of dust adds up to quite a bit over time. If there are additional sources of dust, such as home renovation projects, nearby road or building construction, or particularly dusty weather, it will be even worse.

2: Allergens

Just as dust will settle into your ducts where you can’t clean, other microscopic particles will as well. Two types of particles best-known for causing allergic reactions are pollen and pet dander. One of the best ways to decrease allergy symptoms is to keep a clean home, but no amount of cleaning the visible areas will remove all the allergens unless you get air duct cleaning in San Antonio, TX.

3: Moisture

Condensation happens, especially in places where the temperature fluctuates a lot. Ideally, your ducts won’t accumulate too much condensation, and the ductwork will be installed in such a way that there won’t be low places where condensation can pool. If you have any reason to suspect that moisture is accumulating in your ductwork, you need it cleaned out promptly, before you end up with water damage or other problems.

4: Mold and Bacteria

Some of the other problems moisture will lead to are mold and bacteria, both of which need a steady water source to survive. If your home has a mildew smell or a sour, vinegary smell, especially when the HVAC system is on or when you are close to a vent, you’ve got mold or bacteria growing in there. This can have serious health implications and needs to be cleaned for your wellbeing as well as to make your home smell fresh again.

5: Uninvited Guests

Insects, mice, other small animals, and even snakes sometimes make their way inside ductwork. And where there are animals of any size or type, there are animal droppings. Unpleasant odors of trash can or pet store or any small sounds coming from your ductwork can indicate the presence of pests. Those droppings are contaminating the air you breathe! Your ducts must be cleaned, and the technician should also check for any damage caused by the pests.

Our professionals are ready to take care of you when you reach out. Contact Cowboys Air Conditioning & Heating today to schedule an appointment with our professionals.

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *

Getting your AC ready for summer

Over the winter, your air conditioning system likely sat idle while you ran your heating system. But now that the weather is starting to warm up, you’re probably switching over to your air conditioning system. Before you just crank on your AC, there are a few things...

Energy Saving AC Tips

We all want to stay comfortable in our homes but we don’t want to have to pay an arm and a leg to do so. Energy efficiency is a priority for homeowners these days as the price of energy seems to be climbing every year. At [company_name], we have over 25 years of...

Common AC Problems

All the use that your air conditioning system gets during the hot summer months here in Texas can take its toll. Air conditioning problems are very common and because of how critical your AC is to your home they can be incredibly frustrating and inconvenient. The San...

How An Air Conditioner Works

Having a basic grasp of the major part of your air conditioning system is a great way for homeowners to be able to discover any problems that could be arising with their AC. At [company_name], we offer fast and reliable San Antonio, TX air conditioning repair and...

We Can Help You Save on Your Energy Bills

San Antonio summers can be brutally hot, but that doesn’t mean your family or your wallet should be feeling the heat. At [company_name], we ensure that your air conditioning unit is running at its peak performance. Our certified technicians offer 24/7 emergency...

What is mini split air conditioning?

Mini-split air conditioning systems, also called ductless mini-split air conditioners, have been around for a very long time. However, they have recently started to gain more popularity with homeowners because of the tremendous benefits that they can have. If you’re...

Replacing Your Air Conditioning System

There are a lot of expenses that come along with owning a home, and it is not always a great time to undertake a project such as an air conditioning replacement. Unfortunately, even the best air conditioners cannot last forever, and quality air conditioning in San...