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how much to repair ductwork

by Zita Stiedemann Published 3 years ago Updated 2 years ago
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Cost to Repair Ductwork by Type of Repair

  • Duct Vent Repair Price. The average cost for duct vent repairs is between $100 and $250. Vents are situated on the ends...
  • Repair a Hole in Ductwork Price. Homeowners pay between $150 and $300 to fix a hole in a duct. Holes occur for various...
  • Repair Rusted HVAC Duct Price. Repairing rust in air ducts ranges from $150 to $350.

The national cost average for ductwork repair is $200 to $800, with most homeowners paying $500 to repair a leaky section and apply a sealant to prevent future leaks. This project's low cost is $100 to fix a damaged vent. The high cost for this project is $6,000 to professionally remove mold from a large duct system.Aug 16, 2021

Full Answer

How much does duct cleaning services cost?

How much does air duct cleaning cost? Air duct cleaning costs will fluctuate depending on the number of furnaces and vents in your home. However, it will typically cost $500 or more. Beware of companies who offer eye-catching low prices as these services most likely do not provide the proper, whole-home cleaning needed to be effective.

How to replace ductwork and install a return vent?

  • May have wire reinforcement
  • Often covered with plastic or aluminum
  • Lightweight and easy to install
  • Great for tight spaces and complex layouts
  • Prone to tears, pest infestations, & moisture damage
  • Reduced airflow without proper installation
  • Creates fire hazards in high-heat areas
  • Shortest lifespan of all types

How much does it cost to clean an air duct?

Air duct cleaning usually costs around $375, but it could be more or less depending on the number and type of ducts you have, plus how dirty they are, and the location of your home.

How much does AC duct cleaning cost?

How Much Does It Cost To Clean Air Ducts? Air duct cleaning costs an average of $400. But the price is affected by several factors like the size of the house, the total number of ducts, and how complicated the ducting system is. You could pay between $700 and $1,000 for a large home.

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Is replacing ductwork worth it?

Yes, and Here's Why. Ductwork is a vital component of your home's comfort, air quality, and energy consumption. You should replace old ductwork as soon as possible to maintain the performance of your HVAC.

Is new ductwork expensive?

On average, the cost for installing ductwork is anywhere from $1,900 to $6,000, with the national average being around $4,000. That's assuming you're having 300 linear feet of aluminum ducts replaced, plus insulation and 10 vents and two returns.

Can you replace ductwork yourself?

To answer the question of whether or not you can replace or install your own ductwork, I'd say it is possible but that I highly recommend enlisting the help of a heating, cooling, and ductwork expert. Ductwork runs all throughout your house, which makes doing DIY repairs yourself a heavy contracting lift.

How often should you replace your ducts?

“If your ductwork is over 15 years old, you probably should replace it. Ductwork has a maximum lifespan of 20-25 years. By 15 years, however, it begins to deteriorate, significantly reducing your HVAC system's efficiency, so replacement is the prudent option.”

How long does ductwork last in a house?

about 10-15 yearsDucts are designed to last for about 10-15 years on average. They are made from a combination of materials such as fiberglass and plastic. At some point, these ducts will get damaged. The sooner you see signs of damage and do something about it, the better.

How hard is it to replace ductwork?

Replacing a small section or sections of HVAC ductwork can easily be done with a bit of knowledge and research, however replacing or repairing an entire HVAC ductwork system might require a higher level of expertise.

Is metal duct better than flex duct?

Flex ducts are better for existing trunk-and-branch heating and cooling systems. This is because they're more versatile and flexible. Metal ducts are more rigid due to the nature of steel, making them ideal to build an entire HVAC system.

How do you repair HVAC ductwork?

0:173:31Home Air Ducts - How to repair holes & gaps - YouTubeYouTubeStart of suggested clipEnd of suggested clipFirst I'll apply a layer of sealing. And then a patch of cloth. And more sealant on top. That's theMoreFirst I'll apply a layer of sealing. And then a patch of cloth. And more sealant on top. That's the whole repair. And you don't have to do much more than this it dries really. Quick.

How do you redo HVAC ductwork?

1:164:40How to Install Ductwork | This Old House - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou can see one on each side. And that's going to allow the male piece the straight piece from theMoreYou can see one on each side. And that's going to allow the male piece the straight piece from the next piece of duct work to key right in to that s clip.

How do I know if my ducts are leaking?

Turn your HVAC system on and return to the areas where ductwork is accessible. Check the connections between each section of duct, placing your hand over the metal. If you feel air against your hand, the connection is loose and there is an air leak. A common place for leaks is the duct joints.

How do I know if I have bad ductwork?

Rooms are difficult to heat or cool. Rooms seems stuffy and uncomfortable. Ductwork runs through basements, attics, crawlspaces, or garages. You notice tangled, loose, collapsed, or damaged ducts.

Is duct cleaning a waste of money?

Because we believe it's a waste of money for our customers. Here is what they concluded: "Duct cleaning has never been shown to actually prevent health problems. Neither do studies conclusively demonstrate that particle (e.g., dust) levels in homes increase because of dirty air ducts.

Why is ductwork so expensive?

Ductwork Cost Can Be Expensive in Larger Projects Quality of the Home – Another critical factor in the cost debate is the sturdiness of the home the unit is going into. If your home is older and has substandard flooring or walls, it could end up being a nightmare for all involved.

Does a new HVAC system include ductwork?

When you replace your AC Unit, you remove the old one – both indoor and out, and install the new one; simple as that. However, there is a whole circulatory system (often in your attic) known as the ducts. The ducts carry the cooled air from your unit to the different vents in the house.

What is the most efficient ductwork?

For instance, round duct is the more efficient shape in terms of material use, resistance to airflow, and air leakage. “The tradeoff is that round duct will not always fit in the space provided. In these cases the duct is converted to rectangular or flat-oval so that it can fit the available space.

Should I replace metal duct with flexible?

Flex ducts are better for existing trunk-and-branch heating and cooling systems. This is because they're more versatile and flexible. Metal ducts are more rigid due to the nature of steel, making them ideal to build an entire HVAC system.

Cost to replace ductwork

The average cost to replace ductwork is $1,400 to $5,600, depending on the home's size. Air duct replacement costs $25 to $55 per linear foot or $270 to $500 per duct for a crawl space, attic, or basement. New ductwork installation costs $2,400 to $6,600 for a house without HVAC ducts.

New ductwork installation cost

New ductwork installation costs $2,400 to $6,600 on average to retrofit an existing home without ducts. A new duct system includes the fittings, plenum, air distribution boxes, duct runs, dampers, and insulated register boots.

Air duct replacement cost

Residential ductwork installation costs $25 to $55 per linear foot on average to remove the existing ducts and install new ductwork. The average home has 100 linear feet of ductwork.

Cost factors to replace ductwork in a house

The total cost to replace ductwork depends on the house size, duct location, number of ducts, duct type, and insulation. Labor costs increase for rerouting ductwork, cutting into the floor or ceiling, or installing ducts in older homes.

HVAC ductwork installation cost

The average cost to install an HVAC system with ductwork is $6,800 to $12,400 for retrofits in existing homes. Installing a new heating or cooling unit with existing ducts costs $2,000 to $5,900 on average. New HVAC ductwork installation costs $2,400 to $6,600 on average.

Ductwork repair cost

Ductwork repair costs $200 to $700 on average for minor jobs, depending on the service, duct size, and accessibility. Basic repairs include fixing a leak, replacing a vent, or replacing small duct sections or insulation. Larger damages need a full sealant application or duct replacements.

Frequently asked questions

Ductwork is a large piping system that sends heated or cooled air from HVAC units throughout the home. Duct vents are long tubes or rectangular sheet-metal channels made of fiberglass, steel, PVC, or aluminum. These rigid or flexible ducts are in ceilings, attics, basements, and crawl spaces.

Why are ducts hidden in the basement?

It is common for homes to have at least some exposed ducts in the basement or utility room because they move from your HVAC system to the finished rooms of your home. From there, the ducts become concealed in floors, walls, ceilings, closets, and other spaces. In some homes, such as lofts, all the ducts may remain exposed. The cost of installing new ducts fluctuates depending on whether the ducts are exposed or hidden. Hidden ducts are harder to reach, increasing labor costs.

How much does fiberglass duct board cost?

The cost of fiberglass 1 duct board ranges from $6.50 to $13.50 a linear foot installed. This material can be installed in place of sheet metal ductwork. It is usually rectangular, but some oval exists. This material is used for the trunk of the ductwork system. The trunk is the area that connects directly to the HVAC and runs to all the branches, which then feed off to the vents. Fiberglass ducts are insulating and can be used to gain LEED credits in some areas.

How much does aluminum duct cost?

The cost of aluminum flexible ducts averages $6.50 to $11.50 a linear foot installed. There are many aluminum duct types, including uninsulated and insulated flexible ductwork. These can be used for branches, tight spaces, exposed ducts, and ducts in uninsulated areas.

What are the different types of ductwork?

It is very common for some installations to use more than one duct type. Two of these are flex ducts and metal ducts. Metal ducts make up the trunk of your ductwork. They are what attach to your HVAC system and begin the run to the many branches that will carry the air to the rest of your home. From there, the branches may be made of flexible materials, including aluminum and some types of insulated, recycled plastics. Flexible ducts are good for fitting into narrow areas, bending around corners and obstacles, and feeding through joists. Metal ducts are good for handling larger amounts of airflow at once. In most cases, you will find that your ducts need a combination of both to work efficiently.

How much does it cost to add a vent to a duct?

The cost of adding a vent to existing ductwork ranges from $150 to $250 a vent. Adding a vent is a great idea if you do not receive adequate heat or cooling to a room. Sometimes, this vent may need to be a return vent as well, meaning that it facilitates the air returning to your HVAC system.

How much does it cost to replace ductwork in the attic?

The cost to replace only the ductwork in the attic of a home is between $500 and $900 on average. Attic ductwork is a common method of getting air to the upper floors of a home. It is also a good choice for retrofitting homes or for smaller spaces where the air conditioner needs to be installed on the roof. This ductwork is usually fairly easy to access and is often exposed. It can be of many different duct types and forms. This depends on whether this is a branch or the main trunk of your line.

Why is it important to insulate ductwork?

Older ducts may not be insulated. This means that some of the energy in the heated or cooled air they carry may leak out through the duct. Therefore, your HVAC system needs to work harder to produce the desired air temperature.

How many square feet of ducts do I need?

There is a simpler way to understand this. Most homes need about 1 linear foot of ducts, for every 10 square feet of lining (conditioned) space. Sometimes you need more, and sometimes less. However, 1 ft per 10² ft average is a good place to start.

How much does it cost to clean air ducts?

Air duct cleaning costs. On average, homeowners across the US, report spending $300-500 to clean the air ducts in a 1,500 sq.ft. house. In a larger house, pricing can range from $450-700. Typically, companies charge $30-35 per vent, or a flat fee that depends on the square footage of the house.

What to do if ductwork is not working properly?

If your ductwork is not functioning properly, it is important to determine whether you should repair or replace it. A new system can be very costly, so you don’t need to jump on this option, if less expensive repairs can still do the trick.

What happens when you fix ductwork?

Once the ductwork is fixed, you will experience a dramatic difference in temperature comfort throughout your house, as well as better air quality. If someone in your home has allergies or other respiratory issues, make sure that your ducts and filters are working properly. Otherwise, neglecting this may exacerbate their health conditions.

What factors increase the cost of ductwork?

The price range for new ductwork installation is very wide spread. The following factors will increase your total cost: 1. Location of the ductwork: typically new ducts are installed either in the basement or the attic.

How often should I clean my HVAC system?

HVAC pros recommend to do this once every 3-4 years.

What is the key to indoor air quality?

The key to comfort and great indoor air quality in your home, is a clean, well-functioning HVAC ductwork. If you experience temperature fluctuations, dusty air, odors, loud noises in the vents, etc, it may be time to take a closer look at your air ducts. Sometimes, the solution is as simple as cleaning them.

How Do Air Conditioner Ducts Work?

Air conditioner ducts contain tubes that are connected to HVAC systems. First, the surrounding air is pulled in through the HVAC systems that is either cooled or heated.

Types of Ductwork Material & How Much Does It Cost

Aluminum is known to be one of the best materials used in air ducts. This is probably because of the excellent insulation properties it offers.

What Affects The Cost Of AC Duct Replacement?

The location of your home is a critical factor in determining the HVAC duct replacement cost. If you avail of the services of duct replacement professionals who are established quite far away from your residence, you will have to pay the delivery and travel fees as well.

How Much Is The Average Cost To Replace The AC Duct?

The price of replacing ductwork in a crawl space usually lies around $12 to $30 per linear foot. If the area is clean and easy to access, the price will be minimal.

Repair Vs. Replacement Cost

A comfortable HVAC system ensures consistent heating and cooling throughout the year. Homeowners often fail to realize how important every part of the HVAC system is. Issues inside the AC duct systems can lead to inefficient functions. A weak HVAC system can lead to a waste of energy and higher bills.

Does Professional HVAC Help Make Sense?

Hiring a professional to replace your duct systems can save you a lot of time, money, effort, and the possibility of doing an inadequate job.

Conclusion

The costs of replacement and repair may vary depending on several factors. While repairing your ductwork may seem budget-friendly, it will cost you fortunes in the longer run. Hence, you should make the correct decision right now and save yourself from hefty bills and maintenance costs in the future.

How much does it cost to install ductwork?

Cost of Installation Supplies 1 $1.10 – $5.25 per foot | Insulated flexible duct, 4” to 16” diameters used as branches or in radial duct attic systems 2 $2.30 – $13.00 per foot | Round and oval sheet metal duct, 3” to 8” diameters typically used for trunks in small homes and branches in larger homes 3 $6.50 – $12.00 per foot | Rectangular duct 6”x12” up to 12”x24” used as trunks 4 $3.00 – $12.50 per foot | Spiral, decorative duct used where visible such as along the ceiling of a loft apartment 5 $5.25 – $7.00 per foot | Duct stacks used in walls 6 $50 – $150 each | Plenum used to connect the furnace or air handler to supply ducts and Cold Air Drop for connecting the return ducts to the furnace/air handler 7 $225 – $575 | Fittings and accessories like boots, take-offs, joist pans and dampers 8 $50 – $125 | Duct sealant including tape, insulating wrap and mastic 9 $60 – $200 | Required tools depending on their quality

What is the least expensive duct system?

Type of Ductwork System – The least expensive duct system is a radial system of flexible ducts in an attic running to ceiling grates.

Why is my HVAC system rusting?

Old ducts leak as much as 35% of the treated air, leading to waste and higher-than-necessary energy costs. Some also rust due to condensation forming in them over many years. The old HVAC system was too large for the home.

Why do zoning equipment costs rise?

Zoning Equipment Inside Ducts – When dampers have to be removed and replaced, cost rises because of the additional materials and labor involved. Complexity of the Ducting – Some of the other factors enter into this – house size and layout, where the ductwork is located, age of the house and ducts, etc.

Do you need return ducts for HVAC?

Whether Return Ducts are Used – Most homes have return ducts. A few homes with open floor plans and a first-floor HVAC system don’t require them, as air is easily drawn back to the furnace or air handler. Number of Duct Runs – House size is a factor here, but so is the layout of your home.

Is an HVAC system too big?

The old HVAC system was too large for the home. There was a time when contractors thought bigger was better, but that’s no longer true. A system that is too big wastes energy, creates temperature fluctuations and won’t adequately dehumidify a home in summer.

Is it cheaper to replace ductwork in a basement?

Ductwork running along an open ceiling in the basement of a one-story home is also more affordable to replace. The costliest are sheet metal ducts running in enclosed walls and ceilings. Most projects require more than one type of ductwork.

What factors determine the cost of duct sealing?

Factors that determine the cost of a duct sealing project include the size and age of the ductwork, the size of your home, the accessibility of the ductwork, and how the ductwork is currently sealed and insulated. Here is a more detailed explanation of some of these factors.

Why do HVAC ducts need to be sealed?

As far as minimizing energy transfer, duct sealing helps prevent unconditioned air from the cavities where ducts are located from entering into the ducts. Since air of different temperatures seeks to mix ...

What is duct sealing?

Duct sealing is part art and part science, and it results in a system of well-insulated and sealed ducts that efficiently deliver air throughout your home. If this sounds like an upgrade your ducts could use, keep reading to learn more about the process involved.

Why are exposed ducts needed?

This is because, in addition to being easy to access, these exposed ducts are in desperate need of insulation to improve their efficiency . This idea of exposed ducts overlaps with the last factor determining duct sealing cost, and that is the current status of your ducts when it comes to sealing and insulation.

How does duct sealing work?

When it comes to uninterrupted airflow, duct sealing helps by filling in the gaps that are present at each joint in the ducts. As air flows through the ducts, these joints can allow air to escape, which can reduce the overall heating and cooling capacity of your HVAC system.

What happens if ducts are not sealed?

If your ducts are neither sealed nor insulated, the project cost will be higher than if the joints of your ducts are already sealed. Alternatively, if your ducts have been previously sealed and insulated, but those measures have become worn out, then it will cost more to remove the old insulation, clean the ducts, and install new materials.

How much does it cost to seal a duct?

For an average job, though, you can expect to pay anywhere from $1,000 to $2,500.

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