A Bosch dryer has no vent hose
Most dryers blow hot, wet air out through a duct. The compact Bosch dryers sold today do not. Bosch says they use a ventless design that needs no ducting. The wet air stays inside and the water is pulled out of it.
That water goes one of two ways. It drains through a small hose, or it fills a container you empty by hand. Bosch has also sold vented dryers, and we fix those as well. For the full brand story, see our Bosch repair page.
Condensation models and heat pump models
Bosch makes two kinds of ventless dryer. A condensation dryer heats air with an element. The damp air then passes a condenser, where the water drops out.
The 500 Series and 800 Series heat pump dryers work another way. Bosch says they have no heating element. A closed loop warms the air, pulls out the moisture, then warms that same air again. They dry at lower heat, so loads take longer than in a vented dryer. That is normal and not a fault.
Bosch heat pump models also have a condenser that rinses itself during each cycle. On a condensation model, a clogged condenser is a common cause of long dry times.
Clothes still damp after a full cycle
Damp loads are our most common dryer call. The causes are usually simple.
- The lint filter is coated. Bosch says to pull it, clear it and rinse it under running water.
- The moisture sensor has a film on it. Detergent and hard water leave a crust.
- The water container is full, so the dryer stops early.
- The drain hose is kinked and water backs up.
- The condenser is packed with lint on an older condensation unit.
When those check out, we look at parts. On a condensation dryer, that means the heating element and its thermostats. On a heat pump dryer, it means the compressor circuit and the fans. A weak drum motor or worn drum rollers will also slow things down.
Noise, leaks and a drum that sits still
A thump or squeal on each turn points to drum rollers or the belt. A snapped belt lets the motor hum while the drum sits still. Water under the machine often comes from the condensate pump. That small pump lifts water to the container or the drain. When it fails, the water has nowhere to go.
A dryer that will not start at all may have a bad door latch. Bosch notes the dryer can stop if the door is not shut tight. We test the latch switch before we look at the control board.
Quick checks that cost you nothing
- Wash the lint filter with water, not just your hand. Let it dry before it goes back.
- Wipe the moisture sensor near the lint filter. Bosch suggests a damp cloth with a bit of white vinegar.
- Empty the water container and push it all the way in.
- Pick the right program. Towels need a longer one than shirts.
- Look at the plug. These dryers often pair with a Bosch washer, so check both cords.
Booking, price and what happens at your door
Call or book online any day, 6 AM through 9 PM. Most Bosch dryer calls get a same-day slot. Your tech arrives licensed, insured and background checked.
His fee to trace the fault in a home is $79. A stacked or double unit is $119. Once you OK the fix, that charge drops to zero. The quote is fixed, labor and parts rolled into one number, and you get it before work starts. Belts, rollers and pumps are often on the truck. Our repairs come with a 30-day repair warranty.
When a Bosch dryer is worth the repair
A belt, a pump, a latch or a sensor is a small job. We say fix it nearly every time. A failed heat pump circuit is a bigger bill. On an older dryer, that cost can come close to a new one. You get both numbers from us, and the choice is yours.
Bosch dryer repair is offered in the Houston area, which our Texas service page covers. Chicago, Northern Virginia, Los Angeles and Washington D.C. get the same service. If the washer next to it is acting up too, read our Bosch washer repair page. General dryer help is on our dryer repair page. One last tip for stacked pairs. Keep the space around the dryer open, since a ventless unit needs room air to cool its condenser.