Can You Replace Ductwork Yourself?

HVAC Ductwork.

Can you replace ductwork yourself?

From damage caused by pests to age and wear, there may come a time when your HVAC ductwork will need to be replaced. While you might consider installing ductwork yourself, it’s not recommended. Your ducts manage your HVAC system’s airflow and energy efficiency. If it’s improperly installed it’s possible you can harm your system’s efficiency. This is true for replacing both residential and commercial ductwork. 

When it comes time to replace your ductwork, you not only want to hire professionals you want to make sure they are using the best materials to install them. Haltom Industries recommends using KwikFlange vacuum flanges to connect round ducts. These flanges are easy to install, reusable, and handle high vacuum environments and resist pressure in the range of 1×10-8 Torr. Find out more about KwikFlange and our other services in , TX by calling 817-770-0811.

Should ductwork be replaced after 20 years?

As with anything, your HVAC ductwork will eventually wear out and need to be replaced. Even metal ductwork after about 15 to 20 years can get worn. Metal ductwork can rust if it isn’t properly insulated. Flexible ductwork is susceptible to tears or leaks or even damage caused by pests. When you have your HVAC system inspected as part of regular maintenance, you may want to have your ducts checked for broken seals and leaks as well. Get repairs made as soon as possible as leaks will affect your system’s efficiency.

Is flexible ductwork good?

Flexible ductwork is often installed in homes, especially, because it’s cheaper than metal ductwork. This type of HVAC ductwork has its advantages and disadvantages. It’s easier to install, so labor and materials costs will be lower than metal ductwork. It’s also useful to install in tight spaces where metal ducts won’t fit, so it’s a good option where there are sharp corners and angles. At the same time, flexible ductwork can easily get pinched or twisted, which restricts airflow. It’s also susceptible to getting punctured, and can become brittle and break. Although initially cheaper to install, you may have to replace it more often than metal ducts.  

How do you connect ductwork together?

For professionals connecting metal HVAC ductwork is generally an easy task. Even skilled DIY-ers can replace sections with some ease, though we don’t recommend replacing all your ductwork yourself with some professional guidance. Here is a guide to install round metal ductwork.

How to connect HVAC ductwork

  • Install HVAC duct damper: You’ll first install the dampers in the register. The dampers regulate airflow.
  • Assemble metal ducting: The duct pipes can be assembled almost like a zipper. The edges of the metal are held together and then apply downward pressure to press the seam like a zipper.
  • Use a hole cutter in tight spots: When replacing ductwork in a tight spot, open holes using a sheet metal hole cutter.
  • Use draw band connectors to connect replacement pieces to fitted parts: These connectors are especially useful when installing pipe between fixed parts. You just need to overlap one side and create a butt joint on the other and complete the butt joint with the connector. 
  • Caulk take offs: Use caulk rather than tape on the connections between trunk lines and take-offs or elbows.
  • Use support brackets to reduce movement and noise: Support brackets will hold pipes in place. You also want to use three screws to screw the pipes into the joist hanger to keep them from rattling.

How to install HVAC duct boot

Duct boots are used in HVAC ductwork to convert the duct to a vent. They are commonly used for floor ducts and registers. To install the boot, you’ll attach the boot to the end of the duct piping and press it against the subfloor where you plan to install the register. You’ll mark a rectangular space around the boot and cut a hole in the subfloor where it is marked. The boot is centered under hole and make sure the tabs are flush with the subfloor. Screw the boot into place and then secure the floor duct to the floor.

How much does it cost to install new ductwork?

Costs will vary to install new HVAC ductwork. Much of this will depend on the amount of ductwork installed. Ductwork runs between $35 to $55 per linear foot, so to put in new ducts in a single-family home will run between $1,000 to $5,000. Really challenging jobs may run higher, up to $15,000 or more. To install HVAC and ductwork together will cost more. A new HVAC system may cost anywhere $4,000 to $12,000 to install. 

An HVAC Ductwork System.

Call for Services Today

If you are installing HVAC ductwork in , TX, you’ll want to have the highest quality materials available for the system. Haltom Industries produces some of the best ductwork and fasteners and related materials available. Find out how we can help by calling 817-770-0811.