Heat recycled, not made fresh: that is how the WQB245AXUC dries. Bosch’s top-tier heat pump dryer pairs a Pearl Steel finish, Home Connect and touch controls, and has a drum of 4.0 cubic feet in a cabinet 23 1/2 inches wide. With no vent it plugs into a regular outlet, since it reuses its heat.
The trade-off is time. Cycles run at a much lower temperature, so they take longer, and owners switching from a vented dryer often report that as a problem. It is simply the design at work, and the payoff is far lower energy use and gentler treatment of clothes.
What does deserve a service call is a cycle that has grown longer than it used to be, or one that stops partway. Lint gathers in the heat exchanger behind a bottom hatch, and it plays the role of a lint trap. The condensate reservoir or drain can also be left unemptied, which halts the cycle.
Heat is recycled at a much lower temperature. Longer cycles are expected, and the reward is lower energy use and less wear on your fabrics. Slow is normal; slower than before is not.
Probably lint has collected in the heat exchanger, which sits behind a small hatch low on the machine. Cleaning it periodically restores normal times. Think of it as the heat pump's version of a lint screen.
If the dryer is not plumbed to a drain, yes, because a full reservoir stops the cycle. Emptying it restarts the program. Plumbing the machine to drain removes that routine entirely.
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