Clothes DryersWasher-Dryer Combo
LG WC6907H*A Clothes Dryer Manual
Setup, everyday use, maintenance and troubleshooting for the 5.5 cu. ft. all-in-one washer-dryer, with verified specifications.
- Capacity5.5 cu. ft.
- TypeElectric
- CEF3.94 lb/kWh
- Est. yearly cost$103
About the LG WC6907H*A
This guide covers the LG WC6907H*A, a 5.5 cu. ft. all-in-one washer-dryer listed as ENERGY STAR certified. It measures 27 in. wide.
As an all-in-one washer-dryer, it dries laundry in the same drum it washes in.
Its combined energy factor (CEF) is 3.94 lb of clothes per kWh, for an estimated 607 kWh per year. That beats 40% of the 16 clothes dryers in our database.
Specifications
| Brand | LG |
|---|---|
| Model number | WC6907H*A |
| Dryer type | Washer-Dryer Combo |
| Fuel | Electric |
| Drum capacity | 5.5 cu. ft. |
| Width | 27.0 in. |
| Combined energy factor (CEF) | 3.94 lb/kWh |
| Estimated annual energy use | 607 kWh/yr |
| Energy test cycle settings | Dry Only, Normal |
| Smart / connected features | No |
| ENERGY STAR Most Efficient | Yes |
Safety information
- Clean the lint filter before or after every load. Lint buildup restricts airflow, lengthens drying time and is a leading cause of dryer fires.
- Never dry items soiled with gasoline, solvents, cooking or massage oils, or other flammable substances — even after washing, residual oil can ignite. Do not dry foam rubber or rubber-backed items.
- Check inside the drum before every cycle; children and pets can climb in. Do not let children play on or in the dryer.
- Keep the area around the dryer free of lint, dust, paper and flammable products.
- Connect the unit to the electrical supply shown on its rating plate — some models of this type run on 120 V and others need a dedicated 240 V circuit. Do not use an extension cord or adapter.
- Follow the installation instructions for how the drying system removes moisture. If an exhaust duct is required, use only rigid or semi-rigid metal duct and never vent indoors or into an attic or crawlspace.
Installation and first-time setup
This model is 27 in. wide according to the certification data. Add room behind it for the water hoses, drain hose and power cord, and in front for the door to open fully.
- Choose the location
Pick a solid, level floor within reach of hot and cold water valves, a drain standpipe and a suitable outlet, in a room that stays above freezing.
- Connect the power
Connect the unit to the electrical supply shown on its rating plate — some models of this type run on 120 V and others need a dedicated 240 V circuit. Do not use an extension cord or adapter.
- Connect water and drain
Connect the hot and cold fill hoses with new washers and route the drain hose to a standpipe with an air gap, exactly as for a washing machine. Remove all shipping bolts before the first run.
- Set up moisture removal
The certification data does not state whether this unit is vented. Follow the installation instructions: ventless units route condensate down the drain, while vented units need a 4 in. metal exhaust duct to the outdoors.
- Level the dryer
Adjust the legs until the dryer is level side to side and front to back; a level drum tumbles evenly and runs quietly.
- Test run
Run a timed cycle with a few damp towels. Confirm that it heats and the drum turns smoothly.
Using your dryer
Loading
The 5.5 cu. ft. drum handles typical family loads. Fill it loosely — clothes need room to tumble — and dry similar fabrics together so everything finishes at the same time. Clean the lint filter first.
Choosing a cycle
- Use automatic (sensor) cycles rather than timed drying whenever possible; they stop when clothes are dry instead of running a fixed time.
- Choose a lower heat setting for synthetics, activewear and delicates. Overdrying shrinks fabrics, sets wrinkles and wastes energy.
- Dry loads back to back so the dryer starts warm.
- The certified efficiency was measured on these settings: Dry Only, Normal. Using the same settings gives you results closest to the rating.
Using the combination unit
For wash-and-dry cycles, keep loads smaller than the maximum wash load so clothes can tumble dry evenly, and clean the lint filter as directed. Drying in an all-in-one takes longer than in a separate dryer.
Care and maintenance
| When | What to do |
|---|---|
| Every load | Clean the lint filter. |
| Every month | Check whether water pools on the lint screen when you run tap water over it. If it does, wash the screen in warm, soapy water with a soft brush — dryer-sheet residue clogs the mesh. |
| Every 3 months | Wipe the moisture-sensor strips inside the drum (usually near the lint filter) with a soft cloth; residue makes the dryer stop too early or run too long. |
| Every year | Disconnect and clean the exhaust duct and outdoor hood, or have them professionally cleaned. Check that the damper flap opens when the dryer runs. Vacuum lint from the filter housing and behind the dryer. |
| As needed | Remove ink, crayon or gum residue from the drum with a damp cloth and mild cleaner, then tumble a load of old rags to pick up anything left. |
Troubleshooting
Most dryer problems come back to airflow. Work through the checks below before calling for service; if the display shows a code, look it up in the code table in your manufacturer's manual.
| Problem | Possible cause | What to try |
|---|---|---|
| Takes too long to dry | Clogged lint filter; load too large for drying; low spin speed. | Clean the lint filter, dry a smaller load and use a higher spin speed. |
| No heat | Tripped breaker (on 240 V models, possibly one leg of a double breaker); heat cut out by a safety device after restricted airflow. | Reset the breaker fully off and on. If the drum turns but never heats, clean the lint path and call a technician. |
| Will not start | Door not fully closed; Start not held long enough; control lock on; tripped breaker or unplugged. | Close the door firmly, press and hold Start, turn off the lock and check the power supply. |
| Clothes too hot or shrinking | Heat setting too high; timed cycle too long; restricted airflow. | Use sensor cycles and a lower heat setting; clean the lint path. |
| Thumping, rattling or squealing | Coins, zippers or shoes in the drum; worn drum rollers, belt or glides. | Check pockets and the drum. Persistent squealing or thumping from an empty drum needs service. |
| Burning smell | Normal for the first uses of a new dryer; lint buildup near the heat source. | A faint smell during the first few loads is normal. Otherwise stop the dryer, clean the lint filter and housing, and call a technician if the smell continues. |
| Clothes wrinkled | Overloading; clothes left in the drum after the cycle. | Dry smaller loads, remove clothes promptly. |
| Clothes still damp after wash-and-dry | Load too large to dry in the same drum; lint filter clogged. | Reduce the load to the drying limit in the manual and clean the filter. |
Energy use and running costs
The LG WC6907H*A is estimated to use 607 kWh per year under the U.S. Department of Energy test procedure, which assumes 283 drying cycles a year. At $0.17 per kWh, that is about $103 per year, or $0.36 per load.
CEF (combined energy factor) is the number of pounds of clothes dried per kWh of energy, including standby power; higher is better. This model's CEF of 3.94 lb/kWh is the figure behind the annual estimate.
To lower costs further: use sensor-dry cycles, spin clothes at the washer's highest safe speed, keep the lint filter and vent clean, and dry full (but not overstuffed) loads back to back.
Frequently asked questions
What is the drum capacity of the LG WC6907H*A?
The LG WC6907H*A has a 5.5 cubic-foot drum in a cabinet 27 in. wide.
Does the LG WC6907H*A need an outside vent?
The certification record does not say. Many all-in-one washer-dryers are ventless, but check the installation instructions for your model before planning the installation.
Is the LG WC6907H*A gas or electric?
It is electric. Check the rating plate for the voltage — some models of this type run on 120 V, others need a dedicated 240 V circuit.
How much does it cost to run the LG WC6907H*A?
It is rated at 607 kWh per year, about $103 a year at $0.17/kWh over 283 loads.
What is the CEF rating of the LG WC6907H*A?
Its combined energy factor is 3.94 lb/kWh — the pounds of clothes it dries per kWh of energy. Higher numbers mean a more efficient dryer.
Is there a matching ENERGY STAR washer for the LG WC6907H*A?
The certification record does not list a paired ENERGY STAR washer for this dryer.
Is the LG WC6907H*A ENERGY STAR certified?
Yes. It appears on the ENERGY STAR certified clothes dryers list, with a certification date of September 2026, and it also qualifies as ENERGY STAR Most Efficient.
Sources and disclaimer
Specifications on this page come from the ENERGY STAR certified clothes dryers dataset published by the U.S. Environmental Protection Agency (record certified September 8, 2026), retrieved October 7, 2026.
The setup, operating, maintenance and troubleshooting guidance is written by ManualHarbor's editors for this specific product type and configuration. It is an independent guide — not a reproduction of the manufacturer's manual — and ManualHarbor is not affiliated with LG. Always follow the safety instructions, installation requirements and warranty terms supplied with your unit, and contact LG or an authorized service provider for warranty repairs and replacement parts.
Running-cost figures use assumed U.S. average utility prices and are estimates for comparison only. See our editorial methodology for details.
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