The Clothes Dryer Was Eating 200 a Year and I Didn

I was at a friend’s house last year and noticed she had her dryer running almost constantly. Two kids, lots of sports uniforms, she was doing laundry every single day. Her electric bill was about $220 in the winter, which seemed high for a house with gas heat. I asked her when she had last cleaned the lint filter. She said she cleaned it every load. Then I asked about the vent hose. She looked confused. We pulled the dryer away from the wall and found the vent hose crushed against the drywall. The exhaust had almost nowhere to go. The dryer was running for 90 minutes to dry a single load. A normal load takes 45 minutes. She was using twice the electricity she needed, plus wearing out her clothes faster from the extra tumbling.

We replaced the vent hose with a rigid metal duct and a proper wall cap. Cost about $30. Her drying time dropped to 45 minutes. Her electric bill dropped $18 the next month. That’s $216 a year. For a $30 fix and ten minutes of work. She called me a week later and said, “I can’t believe I’ve been wasting that much money for years.” I told her she wasn’t alone.

The clothes dryer is one of the biggest energy users in most homes. A typical electric dryer uses about 3‑5 kilowatt‑hours per load. If you do 8 loads a week, that’s 24‑40 kWh per week, 1,200‑2,000 kWh per year. At $0.14 per kWh, that’s $170‑$280 per year. And that’s just for running the dryer. That doesn’t count the extra heat in the summer, which makes your AC work harder. If your dryer is venting into your house instead of outside, you’re paying twice.

I see vent problems all the time. Crushed hoses, clogged lint traps, birds’ nests in the exterior vent, hoses that are too long and sagging. Each of these problems makes your dryer work longer and harder. A clogged vent can double your drying time. That’s like doubling your cost per load.

Here’s what you should do. Once a year, pull your dryer away from the wall and check the vent hose. If it’s the flexible foil type, replace it with semi‑rigid metal or rigid metal. Foil hoses have ridges that catch lint and restrict airflow. Metal is smoother and safer. Also check the exterior vent cap. When the dryer is running, you should feel strong airflow. If you don’t, something is blocked.

I had a client named Paul whose dryer was taking two hours to dry jeans. I found a bird’s nest in the exterior vent. The vent cap had broken off, and a sparrow had moved in. We cleaned it out, replaced the cap, and his drying time dropped to 45 minutes. He saved about $150 a year. He also stopped having to run the dryer twice for every load.

Another thing people don’t realize is that drying clothes on a rack or line costs zero electricity. A basic drying rack is $20. It pays for itself in two months if you dry half your loads on it. I’m not saying you have to go full‑off grid. But even one load a week on a rack saves you about $20‑$30 a year. That’s not nothing.

I also tell people about moisture sensors. Most dryers have an automatic cycle that senses when the clothes are dry. That cycle uses less energy than timed dry because it stops exactly when the clothes are ready. Use it. If your dryer has an “energy saver” or “eco” mode, use that too. It runs at a slightly lower temperature and takes a little longer, but uses less total energy.

One more tip: clean the lint filter after every single load. A dirty filter can increase energy use by 30%. And it’s a fire hazard. The U.S. Fire Administration says clogged dryer vents cause about 2,900 fires a year. So it’s not just about saving money. It’s about safety.

My friend with the crushed vent hose now does a yearly vent check. She also switched to drying her jeans on a rack. She said they last longer and don’t shrink. She’s happy. Her electric bill is down about $25 a month. That’s $300 a year. She used some of that money to buy a new washing machine that spins faster, so the clothes come out with less water. That cuts drying time even more. The faster spin cycle cost her an extra $100 on the washer, but it saves her about $30 a year in drying energy. It’s a small win.

I have a tool that helps you calculate your dryer cost.