Duct Sealing Cost
Duct sealing costs around $250 to $2,000, depending on your home size and the condition of the system. This job involves testing it for leaks, identifying their locations, and closing them with sealant or tape.
Duct Armor Cost
This product is a spray coating that goes inside your existing system to clean, seal, and restore it. Duct armor costs around $2,000 to $10,000. Homeowners may be more likely to choose this as an alternative to major demolition in the basement or foundation.
Duct Maintenance and Cleaning
Air duct and vent cleaning costs$300 to $500 on average. Most homeowners should consider this service every two to five years. If you replace your HVAC air filters once per season, you may be able to go longer without cleaning.
Professional cleaning includes the supply and return air ducts, diffusers, grilles, exchangers, coils, fans, drip pans, and vents. This can clear out dust, mold, and pollen.
DIY vs. Hire a Professional Duct Installer
Hiring a professional installer costs $5 to $10 per linear foot in labor, but installing ducts isn’t good DIY work. It requires experience and licenses to install them correctly to handle airflow and your home’s heating and cooling needs. A professional installation means even heating and cooling throughout your home. The project takes a skilled pro one to two days to complete. If you try to do it as a DIY job, it may take a week or longer.
If you’re ready to find an HVAC contractor near you, remember to:
Read ratings and reviews to narrow down the list of candidates.
Contact at least three pros.
Request a detailed estimate.
FAQs
How often should you replace ductwork?
Most ductwork products last 10 to 25 years. Sheet metal can last a lifetime when cleaned and maintained properly. Faulty installation often results in leaks or damage that require replacement sooner.
Can flex duct be used in a crawl space?
You can use flexible duct material in a crawl space if it has a vapor barrier. This prevents water leaks and may offer some protection against rodents. However, you’ll likely want to insulate it.
How long does it take to install ductwork?
Installing ductwork takes one to two days for a pro. If they’re replacing old material, demoing existing ducts might take an extra day.
Do you need to replace ductwork when replacing an AC unit?
You don’t need to replace ductwork when you get a new AC unit unless it’s damaged.
How do you know when you need new ductwork?
You’ll want new ductwork when:
Adding to the home
Feeling uneven heating throughout your home
Upgrading from flexible to rigid ducts
Adding central heating or AC to your home
Increasing the size or power of your central heating or AC unit