# How to check if your Vaillant heat pump can cool

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Updated: 2026-05-22
Language: en-GB

How to confirm whether your Vaillant heat pump supports active cooling, using the model number and installer manual.

To check if a Vaillant heat pump can cool, use four practical checks.

- Check 1: the model designation (VWL air-source, VWF ground-source).
- Check 2: the installer manual cooling and accessories sections.
- Check 3: whether a coding resistor is already fitted (installer task).
- Check 4: ask a Vaillant-approved installer to confirm for your serial number.
- Cooling is a model-dependent option, not standard on every unit.
- A cooling-capable unit still needs suitable emitters to cool usefully.

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