One of the biggest home fire hazards is a dirty dryer vent. And even if clogged dyer ducts don't lead to household damage right away, it'll waste your time, energy, and money.
A dryer connected to vents filled with lint, dust, and dirt won't work well either. If your dryer once polished off wet loads in one cycle or less but now needs two or even three, check your ductwork. Chances are it's not your dryer that's faulty -- just grimy venting that's the issue.
Step 1: Locate your duct
In order to properly clean your dryer's ventilation system, you have to first know where it is and where it ends. In the back of most dryer units is a short 4-inch diameter exhaust. This exhaust connects to dedicated ductwork inside the wall through an aluminum elbow or other pipe. Hot air travels along these metal pipes to eventually emerge through an opening on an outside wall of your house.
Step 2: Safely disconnect the dryer
Now that you know the start and end points of your duct, it's time to disconnect the dryer. It's a simple task if you own an electric dryer. First, unplug the machine's power cord from the wall outlet. Next, remove any metal tape or clamps keeping the dryer vent pipe fixed to its exhaust. If it's easier you might only want to remove the material attaching the vent to the duct inside the wall.
Step 3: Clean, clean, clean
At this point, you should have clear access to the dryer duct opening at the laundry room wall. You can also easily get to the exit point outside the house by removing its duct flap or duct cover. Next, you need to buy a specialized dryer vent cleaning kit. I picked this one up at my local Home Depot for $19. It consists of a lint brush and six 2-foot-long flexible segments. You join these parts together to form a rod that spans a full 12 feet.
In my case, I purchased an additional unit that both doubles its reach and provides a backup brush head for safekeeping. The end of the nifty contraption also fits inside standard power drill chucks. So armed, you'll be able to spin the brush with a good amount of speed and power. Insert the brush end of the rod into your duct. I decided to enter from the outside of the house since that's its highest point. The idea was to use gravity as an aid to clear lodged debris. It's easier to collect lint on my laundry room floor too than it is from inside my mulch-covered flower garden.
While spinning the rod (counterclockwise to avoid unscrewing its segments), push the brush as far as you can down the duct. Hopefully, you'll have enough length to reach the duct's other end. Keep in mind the process might take a few tries depending on how many twists and turns your ductwork may have.
Step 4: Tidy up, reconnect everything
If your dryer vent is anything like mine, expect a lot of lint to come flooding out of the wall. The amount of junk that littered the laundry room floor brought my upright vacuum to its knees. In the end, I had to clean out the vacuum twice to return it to working order. In hindsight, I suggest using a simple broom and dustpan.
After everything is tidy, put everything back the way it was -- with one exception. If your dryer used a soft foil-style vent to link to the wall duct, get rid of it. These hoses are a known fire risk. I personally replaced the original semi-rigid venting with a pair of 90-degree aluminum elbows. Adjustable yet hard, they're durable and provide the best airflow period.
Step 5: Do a trial run and smile
No doubt about it. Giving your dryer duct a thorough cleaning is sweaty, messy work. Two years of duct neglect was all it took to effectively cripple my old dryer. A quick trial run post-cleaning, however, confirmed the appliance had regained all its power. Not only would I not have to buy an expensive new unit, but I'd also put the kibosh on the risk of a scary dryer fire. Now that's a worthwhile chore.
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