Cleaning your dryer vent yourself or hiring a pro: when DIY is enough

What you can do yourself, and should

Some dryer vent care doesn't need anyone but you, and doing it regularly is the best thing you can do for your dryer:

• Clean the lint trap every load. It takes seconds, and a full screen slows every load that follows.
• Rinse the lint screen now and then. Dryer sheets can leave a film on the mesh. Rinse it with warm, soapy water and let it dry before it goes back in.
• Keep the space behind the dryer clear. Lint and dust collect around the machine. Vacuum behind and under it every few months.
• Check the outside flap. With the dryer running, the flap should open and you should feel warm air. Clear any lint, leaves or grass you can reach from outside.
• Look at the duct behind the dryer. The short connector between the dryer and the wall should be attached at both ends and not crushed when you push the dryer back.

None of this replaces a full vent cleaning, but it keeps the vent from filling as fast and lets you spot trouble early.

Where DIY kits fall short

Hardware stores sell brush kits: a round brush on flexible rods that screw together, sometimes turned by a drill. On a short, straight vent they can do a decent job. On many homes they run into a few problems.

Bends and long runs

A brush loses force at every bend. On a long run, through an attic or across the house to an outside wall, it often stops short of the far end, and lint it loosens but can't push out packs into the next bend.

Rods that come apart

If a rod unscrews or breaks inside the vent, it stays there. The vent now has the original lint plus an obstruction that needs professional removal.

No way to see the result

When you finish, you can't see inside the vent or measure how much airflow you got back. A vent can look clean at the opening and still be restricted further in. That's why we measure airflow before and after every cleaning: it's how you know it worked.

Vacuums and leaf blowers

A shop vacuum at the opening only reaches the first foot or two. Blowing air through from the dryer end can help on a short vent, but on a longer one it tends to move lint along rather than out.

What a professional cleaning adds

Here's how doing it yourself compares with our two cleanings:

Basic is the right choice for most homes. Premium makes sense when the inside of the dryer has never been cleaned, or when you suspect something you can't see: a nest, a disconnected joint behind a wall, or a vent that has never been looked at.

Both prices are flat. You see the cost when you book, and it doesn't change if the job takes longer than expected. Condo and high-rise units add $100.

When DIY is the right call

Doing it yourself is enough when all of these are true:

• The vent run is short and straight, with the outside opening close to the dryer.
• You can reach both ends without a ladder.
• The dryer dries a normal load in one cycle.
• The outside flap opens fully and the airflow feels strong.

Many homes don't meet all four. Laundry rooms often sit in the middle of the house or on an upper floor, so the vent has to travel a long way, with bends, before it reaches an outside wall or the roof.

If yours does meet all four, keep up the lint trap and flap checks, brush the vent yourself once a year if you like, and save your money. A cleaning is worth booking when one of those stops being true.

When to call a pro

• A load takes two or three cycles to dry.
• The vent runs through the roof, an attic or across the house.
• You see signs of birds or rodents at the outside opening.
• A rod or brush is stuck in the vent.
• You smell burning lint, or the top of the dryer is hot to the touch.
• The duct behind the dryer is flexible plastic or foil, or it is crushed.

For that last one, we can replace a flexible plastic duct with semi-rigid aluminum UL-listed duct during the visit. The Transition Duct is $50.

For how often to book a cleaning, see how often Florida homeowners should clean their dryer vents.

Common questions