Air duct replacement isn’t just about closing gaps and holes; it creates a cleaner and safer indoor air experience.
Did you know? The U.S. Environmental Protection Agency (EPA) reports that leaky, dirty ducts can cause your HVAC system to work about 20% less efficiently. (source) This is money lost and comfort gone.
If your ducts are chewed by rodents, filled with dust, or are more than 15 years old, it is time for a replacement. Replacing ducts will help keep unwanted pests out and improve the air quality and efficiency of your system.
Now, let’s discuss what happens during the replacement of an air duct and what to expect before, during, and after the process, without surprises.
What Happens Before a Full Duct Replacement?
Home Inspection and Assessment
When considering air duct replacement, it is necessary to inspect everything beforehand. Professionals check for:
- Signs of rodent infestations
- Mould or mildew
- Air leaks
- Broken or sagging ducts and
They check the air quality and temperature inconsistencies between rooms.
Planning and Design
The layout is predetermined based on the size of your home and the amount of airflow it will need. The installers will find the appropriate duct size and packaging to limit airflow loss and ensure rodent proofing at the joints and in every bend.
Cost Estimate and Timeline
Here, you will see an estimate that will include:
- Duct installation cost
- Material cost (metal, flex, or fibreglass)
- Labour charges
- Cleanup and sealing
You’ll also see a timeline from teardown to completing full air duct installation.
How Much Does It Cost?
Here’s a breakdown of what affects the cost to install ductwork:
| Component | Estimated Price Range (USD) |
| New Duct Materials | $1,000 – $3,500 |
| Labor | $1,500 – $4,000 |
| Removal of Old Ducts | $500 – $2,000 |
| Sealing & Insulation | $300 – $1,000 |
| Total Ductwork Prices | $3,300 – $10,500 |
Note: These ductwork prices vary by home size, system complexity, and location.
Key Benefits After Full Air Duct Installation
Improved Air Quality
New ducts remove years of dust, allergens, and rodent droppings, so the air quality in your home will be cleaner and healthier.
Consistent Room Temperature
There will be no more hot spots or cold corners. Proper duct routing ensures that airflow is consistent and evenly distributed across each room.
Better Energy Efficiency
New ducts stop the leaks and cut energy consumption by an estimated 15%- 25%, a significant savings on your monthly energy bill.
Long-Term Rodent Proofing
In addition to sealing and steel mesh, installers will use rigid materials and thoroughly aligned seal joints to reduce the chance of pest penetration into your duct system. Thus, there will be no more scratching sounds in the ceiling.
Step-by-Step: What to Expect During the Process
Removal of Old Ducts and Cleaning
- Workers put on safety gear and remove contaminated or drooping ducts.
- They remove debris, rodent nests, or any other mould contamination.
- This step may take 1–2 days, depending on the size of the system.
Material Delivery and Preparation
- New air ducts are installed; the choice of sheet metal or flexible ducting will depend on the house’s needs.
- Rodent-proofing seals, tapes, and sorts will be installed.
New Duct Installation Process
- Installers install ductwork in walls, ceilings, or in attics of the home to be installed.
- They properly anchor and insulate ductwork if needed. They also focus on joints and corners to reduce air loss.
- They connect all the vents in the house for the total air conditioning to be distributed evenly.
Final Sealing and Testing
- Ducts will be tightly sealed and taped.
- Air pressure tests will monitor leakage.
- The technician will operate your HVAC to check for functionality.
Watch for These Signs You Need Duct Replacement
- High bills every month with regular operation
- Poor air flow in certain rooms
- Musty odour or rodent droppings in vents
- Ducts are older than 15-20 years
These are some warning signs that warrant replacement, not simply cleaning.
How Is This Different from a Quick Fix?
While repairs can be cost-effective right away, you will probably not be successful if:
- You’ve got rodent infestations in your ducts.
- The metal is severely corroded or torn.
- There are issues with mould or smell.
Replacing everything can give you long-term safety and peace of mind, better airflow, and permanent rodent proofing.
Expert Tips to Maximize Your Investment
- Select metal ducts – they are more durable, and rodents can’t ingest them.
- Always seal with mastic, not duct tape.
- Ask for a system inspection every 2 years.
- Install filters at every vent to block future infestations.
Real-Life Benefits After Full Ductwork Replacement
Are you still wondering if air duct replacement is worth it? Here is what homeowners experience after a duct replacement:
- No more rodents because of strong rodent proofing using steel mesh and sealed joints.
- You can breathe cleaner air in your home with fewer allergens, odours, and contaminants.
- Lower monthly energy bills, usually 15–25% lower, because of reduced air leaks.
- Balanced airflow throughout the house, no more hot or cold rooms.
- Quieter HVAC operation because clean ducts properly routed create smooth airflow.
Still Thinking About It?
Here’s why full air duct installation is worth the time:
- No more guessing where that bad smell is coming from
- Better indoor air quality for your family
- Real rodent proofing peace of mind
- Lower monthly bills throughout the seasons
Upgrade Your Air And Your Comfort!
Don’t allow pests, dust, and bad airflow ruin your home with the help of proper air duct replacement. Whether you are replacing the ductwork or dealing with pests, have somebody you can trust. My Insulation Guy will ensure a professional replacement, including complete rodent proofing, from start to finish. You will get clean air, safe ducts, and lower bills. Visit our website or contact us to have a consultation today.
FAQs
- Is it worth it to replace ductwork in an old house?
Yes, especially if it is 20 years old or older, you have rodents, or they are leaking. It upgrades efficiency and air quality.
- How long does it take to remove and replace ductwork in a house?
The entire process will take 2 to 4 days for most homes. Larger or more complicated systems can take over 1 week.
- What is the average lifespan for air ducts?
Air ducts generally last 15–25 years. Significant use and proper maintenance can extend their lifespan. Rodent issues and mould can also shorten a duct’s lifespan.
- Can rodents chew through new ducts?
Yes, if you are using an unprotected flex duct. For the highest level of protection, use metal ducts with rodent-proofing mesh.
- Do I have to leave my house during the ducting installation?
Not always. In most instances, the ducting installation will take place without affecting your daily living arrangements, especially if the work is in the attic.