How Long Does HVAC Ductwork Last?

Most homes today have ductwork installed since it is a crucial factor to have when you have a heating or cooling unit. It makes every home comfortable and vital for quality air and energy consumption. Remember that when your air conditioning system or heater unit is working, so is the ductwork. circulatory

How long does HVAC ductwork last? HVAC ductwork lasts up to 15 years. Afterwards, it will start to deteriorate and show signs of wear and tear. Even if some lasts for 30 years, it is best to have replacement because once it starts to weaken, it will lessen its efficiency to operate.

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Below, I will be explaining the factors that affect the lifespan of a ductwork and the ways on how to keep old ductworks. Aside from that, I will be discussing some of the reasons that might convince you to change your HVAC ductwork today.

Lifespan Of A Ductwork

Ductwork also has a lifespan. You need to know that it creates, breaks energy savings, and gives comfort in your home and checking if it works properly is a must. In general, if your ductwork does not work correctly, it will not last for a long time.

For an average estimate, ductwork can last for 10-15 years before it shows up some signs of wear. Most homeowners opt for materials that cost less rather than choosing materials that can last for years. To keep your ductwork last for a long time, watch out for these signs and check if your ductwork needs replacement.

  • Unstable Room Temperatures – When you feel like there are some parts in your home that feels too hot or too cold, the ductwork is not correctly installed, have airflow issues, have worn, and tears.

  • Constant Dusty House – It means that your ductwork has leaked; that is why it has been letting dust or debris in but letting air out.

  • Poor Installation Work – After a while, if you already noticed a lot of leaks, it means that the ductwork’s installation is terrible. There are many professional and trusted companies that will help you check the issue and recommend the best thing to do.

What Does A Ductwork Have To Do With A HVAC System?

Ductwork is a system of your HVAC unit in which everything works. It is like a pathway for air across your home, taking the air at particular places, cooling, heating it, and sending it again into the vents. It is like a simple task, but, honestly, it is complicated to make sure there is quality airflow.

In general, your HVAC system will not operate correctly without ductwork. Each standard equipment that ventilates, heating air, and other air conditioning system needs ductwork to let the air enter and push it out.

You will need the right ductwork to guarantee a balance of air flowing in and out into the whole house or office. When there is no equilibrium, your entire HVAC will operate harder to meet the temperature you need.

Ways To Keep Old Ductwork

The magic to make ductwork last for a long time without replacing them is put effort. It may depend on the system and other signs, but if you look harder, it is best to add effort in inspecting your ductwork.


It will be worth your money to get cleaning every 2-7 years by professionals. If there are dust, debris, and pet hairs on the air intake register, having your ductwork cleaned is the right thing to do. After cleaning, you will notice that the air quality is different from before, which can help your HVAC system work smoothly.

Also, be aware of who will do this job. If you left your ductwork not cleaned appropriately, it could compromise the quality. Someone who is not a professional cleaner can worsen the situation and might add dirt even more. Besides, it can damage some parts of your HVAC system.


Going to the rooftop and checking your ductwork will help you spot leakages before they got worse. You can look for gaps in the aluminum tape that seals the air ducts. You can also check on the tears, crushed sections, and twist of the ductwork. If there is moisture or damages present, seal it immediately.

Using aluminum tape is a good idea since it has many advantages when it comes to these things. Doing it prior can prevent more damages.


A risk of condensation exists when you operate cold air into a warm room. If you want to keep out moisture, you should insulate ductwork immediately when it arrives on you. You can use aluminum tape, foil-lined fiberglass insulation, and many more. Start this weekend by putting this simple task.

3 Factors Why You Need To Change Your Ductwork Now

Mold Problems

Mold can be a prevalent issue and need immediate action. Your HVAC system must always be dry, so if you see any mold and moisture, call for someone to repair it. Molds are also toxic to humans, and if inhaled, can cause health conditions.

HVAC System Size

You must look for ductwork that is accurate for your HVAC system’s size. If your ductwork is too small, you will not likely feel the temperature that you want, no matter how the machine outs effort. While, if it is too big, it will be loud and noisy.

Asbestos Insulation

If your house was already there before 1977, it must have asbestos. Asbestos is a fiber that can cause cancer. It is very toxic and must be taken care of by experts and professionals only as they have the proper tools.


In general, the best way to tell how long does HVAC ductwork last is about 10-15 years on average. While some last for 30 years, it may not work anymore with today’s technology. Ductwork is usually forgotten, but it also must have cleaning, maintenance check, replacement, and repairs from time to time.

With proper care, your ductwork can last for long. You have to remember that things are prone to damage, so you also need to check it from time to time. When your ductwork is full of dirt, you will get the best from your air conditioning system or heating equipment.

Even though you have a new air conditioning system that is excellent for your house, having inadequate ductwork will hinder the unit’s comfort and optimum operation. If your home feels like there is no cool air or there are hot areas, you can then call a professional that will help you.

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