How to Use an All-in-One Washer Dryer
All-in-one washer-dryers combine washing and ventless condensation drying in a single drum. Getting the best results means using the right load size, HE detergent, and dry-level settings — and cleaning the lint filter before every drying cycle.
Loading and Prep
Check garment care labels
Before loading, check the care labels on each garment. Look for "do not tumble dry" or "lay flat to dry" symbols — items with these labels should go through the wash cycle only and then be removed to air-dry. Wool, silk, and some heat-sensitive synthetics can shrink or felt in a dryer. Running these items through the full wash-and-dry cycle will damage them.
Sort by fabric type and weight
Sort laundry as you would for a regular washer: separate darks from lights and whites; separate delicates and lightweight fabrics from heavy items like towels, jeans, and sweatshirts. Mixing heavy and light items in an all-in-one combo can result in uneven drying — heavy items retain moisture while lightweight fabrics over-dry.
Load to no more than ¾ capacity
All-in-one washer-dryers have a smaller drum than standalone washers, and the drying capacity is smaller still. For a combined wash-and-dry cycle, fill the drum to no more than ¾ capacity. Overfilling reduces the tumbling space that condensation drying needs to work — clothes at the center of an overfull drum will remain damp at the end of the cycle.
Add HE detergent only
Always use HE (High-Efficiency) detergent — the bottle or package is labeled "HE." Standard detergent produces far more suds than the machine's sensors expect, which can cause foam to overflow the drum, trigger error codes, or damage internal components. Use the minimum recommended amount — combo units are sensitive to detergent quantity.
Check the lint filter before drying
Locate the lint filter — in most models it is behind a small panel at the front bottom of the machine, but locations vary. Check your manual for the exact location before first use. Clean the lint filter before every drying cycle; a clogged filter is the most common reason laundry comes out damp after a full cycle.
Wash Cycle Guide
| Cycle | Best For | Water Temp | Notes |
|---|---|---|---|
| Delicate / Hand Wash | Lingerie, silk, wool, light synthetics | Cold | Gentle tumbling; minimum spin speed to reduce stretching |
| Normal / Cotton | Everyday items — shirts, jeans, bed linens | Warm | Standard agitation and spin for most household laundry |
| Heavy Duty | Towels, workwear, heavily soiled loads | Hot | Longer wash time and faster spin; highest extraction of moisture before drying |
| Eco / Energy Saver | Regular lightly soiled loads | Low-warm | Longer cycle at lower temperature — takes more time but uses less energy |
| Quick Wash | Lightly worn items that need freshening | Cold or warm | Shorter cycle — not suitable for heavily soiled items; not intended for drying |
Drying Tips
Do not add items after the wash cycle ends
The machine determines drying duration based on the load that was washed. Adding dry items for drying defeats this calculation and can overload the drum beyond its effective drying capacity.
Clean the lint filter before every drying cycle
This is the single most important maintenance step for consistent drying performance. A lint-clogged filter blocks the airflow that condensation drying depends on. Unlike standalone dryers, all-in-one combos cannot vent lint through an external duct — the filter must be cleaned manually and regularly.
Select the correct dry level
Most models offer: More Dry or Extra Dry for heavy items (towels, denim, cotton); Normal or Cotton Dry for everyday fabrics; Less Dry or Iron Dry for items that will be ironed or are prone to over-drying and wrinkling. If clothes come out slightly damp, select a higher dry level next time rather than re-running the full cycle.
Expect a longer total cycle time
A combined wash-and-dry cycle typically takes 2–4 hours for a standard load. Ventless condensation drying is inherently slower than a vented dryer because it relies on a heat exchanger to remove moisture rather than exhausting warm, moist air outside. Smaller or lighter loads complete faster; heavy cotton loads take longest.
Remove clothes promptly when the cycle ends
Leaving clothes in the drum after the cycle increases wrinkling. Most machines play an audible alert when the cycle finishes. If you cannot remove them immediately, run the machine's Wrinkle Prevent or Anti-Crease tumble feature if available — it tumbles without heat periodically to reduce creasing.
Important Notes
All-in-one combos use ventless condensation drying
No external vent is needed — the machine condenses moisture internally using a heat exchanger and drains it through the same drain line as the wash water. This is why combo units work in apartments and closets without external ductwork.
HE detergent is non-negotiable
Standard detergent creates suds that overwhelm the drum's sensors and can cause error codes or damage seals. The HE label on the detergent package confirms it is formulated for low-water, high-efficiency machines.
The lint filter location varies by model
Unlike standalone dryers, combo unit lint filters are not always in a visible top or front panel slot. Some are behind a bottom-front access door; others are in the drum or inside the machine's door seal area. Check your manual before first use.
Some fabrics cannot tolerate drying heat
Wool, silk, and heat-sensitive synthetics can shrink or felt in any dryer — standalone or combo. Remove these items after washing and air-dry them instead of running the drying cycle. The wash cycle is safe for most of these fabrics on the Delicate setting.
Frequently Asked Questions
How long does an all-in-one washer dryer take?
A full wash-and-dry cycle typically takes 2–4 hours for a standard household load. The exact time depends on load size, fabric weight, selected wash cycle, and dry level. Smaller loads of lightweight fabrics (shirts, underwear) may complete in under 2 hours. Large loads of heavy cotton (towels, jeans) take the longest. Ventless condensation drying is inherently slower than vented dryers — this is a design trade-off for the ventless, space-saving installation.
Can I just wash without drying in an all-in-one washer dryer?
Yes — select a wash-only cycle or simply open the door and remove clothes after the wash cycle completes. The machine will not automatically advance to drying unless you have selected a combined wash-and-dry program. Many users run wash-only cycles for delicates and items that should not be machine-dried, then air-dry those garments on a rack.
What detergent should I use in an all-in-one washer dryer?
Always use HE (High-Efficiency) detergent — the package will be labeled 'HE.' HE detergents are formulated to produce fewer suds in low-water machines. Standard detergent creates excess foam that can trigger error codes, overflow the drum, and damage internal sensors or door seals over time. Use the smallest recommended amount listed on the HE detergent packaging — combo units are particularly sensitive to over-sudsing.
Why are my clothes still damp after the all-in-one cycle?
Damp laundry after a full cycle is most often caused by one of three things: (1) overloading — condensation drying requires tumbling space to move moist air across the heat exchanger; too many clothes block this airflow; (2) a clogged lint filter — the lint filter must be cleaned before every drying cycle, not just occasionally; (3) the dry-level setting being too low for the fabric weight — select a higher dry level (More Dry or Extra Dry) for heavy cotton items.
Do I need a vent for an all-in-one washer dryer?
No external vent is required. All-in-one washer-dryers use ventless condensation drying, which removes moisture from clothes by cooling warm humid air over a heat exchanger inside the machine. The condensed water drains through the same drain line as the wash water. This ventless design is why combo units can be installed in apartments, closets, or any location with only a water supply and drain — no external ductwork needed.
Can I dry all fabrics in an all-in-one washer dryer?
Not all fabrics tolerate dryer heat. Check garment care labels before starting a drying cycle. Items labeled 'do not tumble dry,' 'lay flat to dry,' or 'air dry only' should be removed after the wash cycle and dried on a rack or flat surface. Wool and cashmere can felt and shrink; silk and some heat-sensitive synthetics can be damaged by heat. Most cotton, linen, and durable synthetics dry well in a combo unit on the appropriate cycle.