How Broken Ductwork Impacts Your HVAC Efficiency

June 30, 2025

What faulty ducts are doing to your HVAC system

Ductwork joint with welding marks in wooden ceiling frame

The comfort of your home depends on a hidden network of ducts, quietly working to deliver warm or cool air to every room. They’re the unsung heroes of your heating and cooling system, making sure your home feels just right all year long. But what happens if those ducts get damaged or stop working properly? Let’s dive in and find out.


Damaged ductwork can take a serious toll on your HVAC system, making it work overtime, wasting energy, and driving up your utility bills. By recognizing the signs of faulty ducts early on, you can save money, reduce energy use, and keep your home feeling comfortable year-round.


What Does “Broken Ductwork” Mean? 

When your ductwork is damaged, it can cause all sorts of airflow problems in your HVAC system. From leaks to cracks, there are plenty of reasons your ducts might not be working the way they should. Here’s a look at some of the most common culprits behind damaged ductwork:


1. Cracks or Holes in the Ducts 

Over time, your ducts can wear down, forming cracks or holes that let air leak out before it even gets to your rooms. This not only wastes energy but also makes your system work harder than it should.


2. Loose or Disconnected Joints 

The joints where your duct sections connect can become loose or disconnected because of aging materials or improper installation. This breaks your system’s steady flow, leading to airflow issues. 


3. Crushed or Damaged Ducts 

Flexible ducts can easily get crushed or damaged over time by things like pests, wear and tear, or even too much pressure. When ducts get bent out of shape, they block airflow, making it tougher for your HVAC system to keep your home comfortable.


How Broken Ductwork Affects HVAC Efficiency 

Broken ductwork doesn’t just hurt your HVAC system’s efficiency—it makes it work harder, driving up your energy bills and wearing it down faster.


1. Air Leaks 

If your ductwork has cracks, holes, or loose joints, it’s like throwing money out the window. Leaky ducts force your HVAC system to work harder to keep your home at the right temperature, leading to wasted energy and higher energy bills month after month.


2. Uneven Temperatures 

Ever feel like some rooms in your home are way too hot or freezing cold compared to the rest? The culprit might be broken ductwork, which can mess with your air circulation and leave certain spots uncomfortable. Plus, when the air isn’t flowing like it should, your thermostat struggles to get an accurate read on the temperature.


3. Overworked HVAC System 

When your ducts are damaged, your HVAC system has to work overtime just to make up for the lost air. This not only puts extra strain on the system but also makes breakdowns more likely and cuts down its lifespan.


4. Higher Energy Costs 

Leaky ductwork can really drain your energy—and your wallet. When your HVAC system has to work harder to heat or cool your home, those energy bills can skyrocket. Fixing your ducts not only helps your system run more efficiently but also keeps more money in your pocket over time. It’s a win-win!


Signs Your Ductwork Might Be Damaged 

Is your ductwork broken? Look out for these common signs: 


  • Some rooms are too hot, others too cold: If your home feels like it has its own microclimates, there could be an airflow issue. 
  • Barely-there airflow from vents: Weak air from your vents might mean your ductwork isn’t in the best shape. 
  • Skyrocketing energy bills: If your utility costs are climbing without a reason, air leaks or inefficiencies might be to blame. 
  • Dust seems to be everywhere: Damaged ducts can suck in dust and spread it through your home, making things feel dirtier than usual.


Dealing with these issues? Don’t wait to act—nobody wants to throw money away because their HVAC isn’t doing its job!


What You Can Do 

The great thing about ductwork issues is that they can be fixed! With the right steps, you can get your home back to feeling comfortable and running efficiently. Here’s how:


1. Get Your Ducts Inspected by a Professional 

Bring in a certified technician to check out your ductwork. They can spot leaks, fix damage, and tackle any maintenance needs to keep things running smoothly.


2. Seal Any Leaks 

Did you know that sealing up the cracks and joints in your ductwork can make a big difference? It’s a simple way to stop air from escaping and help your HVAC system work more efficiently.


3. Replace Old or Badly Damaged Sections 

Sometimes a simple seal won’t cut it. Swapping out old or damaged duct sections can work wonders for improving airflow and boosting efficiency.


4. Insulate Ducts if Needed 

If your home has ducts in unheated spaces like the attic or basement, adding insulation is a smart move. It helps keep temperatures steady and cuts down on wasted energy.


By following these steps, you can make your HVAC system run more efficiently, save money on your energy bills, and create a cozier, more comfortable home.


Don’t Let Leaky Ducts Steal Your Comfort

You can’t always see broken ductwork, but you can definitely feel its effects—whether it’s sky-high energy bills, inconsistent temps, or a system that’s constantly running. Tackling duct issues early can restore your home’s comfort, trim your utility costs, and help your HVAC last longer.


Not sure where to begin? Give Grand Rapids Duct Cleaners a shout! Our team is here to inspect, repair, and make sure you’re breathing easier every day of the year. Ready to make your home more comfortable and energy-efficient? Let’s get started—call us today!

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