How to Replace a Dryer Duct Hose

A dryer duct hose, also called a dryer vent hose, is a flexible tube that connects your dryer to an exterior vent, allowing hot air, moisture, and lint to be expelled outside.

Dryer duct hoses are most commonly made from flexible aluminum and need to be replaced every 5 to 7 years—or sooner if they become damaged. They can become damaged prematurely if they are kinked, or torn, or if the dryer is pushed too close to the wall, crushing the hose.

If your dryer duct hose needs replacing, this article will show you how to do it step by step.

Steps for Replacing a Dryer Duct Hose

Follow these five simple steps to replace your dryer vent hose.

Step 1: Gather Your Materials

For this job, you will need a replacement dryer duct hose. There are a few options to consider:

• Flexible Foil Ducts: These are thin, lightweight, highly flexible, inexpensive, and easy to install. However, they are prone to being crushed and torn.
• Semi-Rigid Metal Ducts: These are more durable and crush-resistant than foil ducts, but they are not quite as flexible. They are still easier to work with than rigid metal ducts.
• Rigid Metal Ducts: These are highly durable and have a smooth interior that prevents lint buildup. However, they are not flexible, which makes them more challenging to install.

You will also likely need:

• Band clamps
• Foil tape
• Screwdriver
• Tape measure
• Vacuum cleaner

Step 2: Unplug and Move the Dryer

For your safety, it’s best to unplug the dryer from the outlet and, if you have a gas model, turn off the gas supply before working on it.

To access the dryer duct hose and provide ample working space, most people will also need to pull the dryer away from the wall.

Step 3: Remove the Old Duct Hose

Loosen the band clamps on both ends of the old hose using a screwdriver. If the old hose is secured with foil tape, carefully peel off the tape or cut it.

Disconnect the hose from the dryer and wall connections by pulling it off, and set the clamps aside in a safe place for reuse later. Once the old duct hose is removed, use a vacuum cleaner to clean up any lint or debris around both connections.

Step 4: Prepare the New Hose

If your new duct hose is too long, measure it against the old one and cut it to size using a utility knife, aviation shears, or scissors. Ensure there’s enough length for a secure connection without kinks.

Tip: If you’re using a flexible foil duct, you can reinforce both ends by wrapping metal foil tape around them.

Step 5: Install the New Dryer Duct Hose

Place a band clamp loosely over one end of the new duct hose, then slide that end onto the dryer’s exhaust port. Secure it tightly with the clamp and tighten the clamp with a screwdriver. Next, use metal foil tape to seal any gaps or seams at the connection point.

Repeat this process for the other end by attaching the dryer duct hose to the wall vent. Ensure the dryer duct hose is not kinked, and carefully push the dryer back into position, taking care not to crush the newly installed duct hose. Finally, plug in your dryer and, if applicable, turn on the gas supply.

Which Type of Dryer Duct Is Better: Flexible, Semi-Rigid, or Rigid?

Each type has its advantages and disadvantages, depending on your needs and the space available. Flexible ducts are the easiest to install and work well in tight spaces. However, they are less durable and prone to lint buildup, which can increase fire risk over time.

Semi-rigid ducts strike a good balance between flexibility and durability. They are more resistant to lint buildup than flexible ducts and still relatively easy to install. This balance makes them the most popular choice for most homeowners these days.

Rigid ducts are the most durable and efficient option, as they trap the least lint and offer the best airflow. However, they are more challenging to install because they require a straight path and precise measurements.

Can I Use Another Tape Instead of Foil Tape?

No, metal foil tape is designed to withstand the high temperatures your dryer emits. Other tapes, such as duct tape, are not recommended for dryer ducts as they can degrade over time due to heat and may not provide a reliable seal.

Foil tape is widely available at hardware and home improvement stores, as well as online retailers like Amazon and eBay.

Should I Hire a Professional to Replace My Dryer Duct Hose?

If you’re uncomfortable with DIY tasks or if your vent system is complex, hiring a professional can ensure the job is done safely and correctly.

However, many people can replace a dryer duct hose themselves, especially when the dryer is located close to the wall vent, saving the cost of hiring a professional. 

By following the five steps outlined above, you shouldn’t encounter many issues. The job should take around one hour to complete once you have all the necessary tools and materials gathered.

How Often Should I Clean My Dryer Vent?

It’s important to clean the dryer vent system at least once a year to prevent it from clogging, which can cause your dryer to perform less efficiently, overheat, and potentially result in damage or increase the risk of fire.

You can clean the dryer vent yourself using a vent cleaning kit that includes extension rods and a flexible brush that attaches to an electric drill, or you can hire a professional to do it for you.

It’s also important to remember to clean the lint trap after every cycle.