# Vaillant aroTHERM Plus Model Numbers: VWL 35/6 to 125/6

URL: https://www.vheatc.site/vaillant-arotherm-plus-model-numbers-explained
Canonical-URL: https://www.vheatc.site/vaillant-arotherm-plus-model-numbers-explained
Updated: 2026-10-20
Language: en-GB

What the Vaillant aroTHERM Plus model codes mean — VWL 35/6, 55/6, 75/6, 105/6 and 125/6 — the output of each, and which take the cooling plug.

Vaillant aroTHERM Plus model codes decoded:

- VWL 35/6 = 3.5 kW; VWL 55/6 = 5 kW; VWL 75/6 = 7 kW.
- VWL 105/6 = 10 kW; VWL 125/6 = 12 kW.
- VWL marks a Vaillant air-source heat pump; note any suffix (e.g. S2) too.
- The same cooling plug (0020269259 / 0020266328) is listed for all five.

Buy on eBay (seller boarder895) — the same plug in two packs:
- 0020266328 (Vaillant small-parts bag, labelled with the part number): https://www.vheatc.site/go/ebay/0020266328
- 0020269259 (Original Vaillant box, labelled “Coding plug, cooling function”): https://www.vheatc.site/go/ebay/0020269259