Tumble dryers come as vented, condenser and heat-pump machines, and the type shapes both the fault and the best fix. Drying that slows over a few months usually points to blocked airflow or a lint build-up, with a fading heater or sensor often behind it.
A condenser dryer needing two or three cycles for one wash is usually a failing heater or sensor, or airflow fouled inside. A vented unit in a garage that has grown slower often has a congested vent path or duct.
Spin dryers are covered too. One that hums without turning, or spins but leaves the clothes wet, usually has a worn belt, brake or motor, or a lid switch that no longer makes contact.
The engineer first checks the lint filter, the airflow and the vent. A heater working against restricted airflow can fail early, so clearing the block sometimes restores the dryer with no part needed.
Dryers often live in a garage, basement or outbuilding rather than the kitchen. Knowing where it stands and how the vent runs lets the engineer reach it quickly and prepare the right tools.
The labour for diagnosis and repair sits in a fixed quote. Belts, motors, heaters and drum rollers are priced separately and fitted only after you approve each one. On a heat-pump machine the refrigerant gas may also be involved, a separate point the engineer flags clearly.
Where the motor or heater on an older dryer has worn out, the repair can outrun the value of the machine. The total is compared honestly with the price of a new dryer, and replacement is recommended where it clearly makes more sense.