# Upgrading your heating system for active cooling

URL: https://www.vheatc.site/upgrading-your-heating-system-for-cooling
Canonical-URL: https://www.vheatc.site/upgrading-your-heating-system-for-cooling
Updated: 2026-05-22
Language: en-GB

Why a standard heating system must be adapted for cooling — fan-coil circuits, condensate handling and controls — not just authorised with a resistor.

Active cooling on a Vaillant heat pump is a system upgrade, not a single part.
The coding resistor authorises cooling; the system has to deliver it.

- Radiators cannot cool well — too little surface area, condensation risk.
- Add a dedicated fan-coil cooling branch; keep radiators heating-only.
- Every indoor cooling unit needs a condensate tray and trapped drain.
- Vaillant sensoCOMFORT controls add dew-point monitoring to prevent condensation.
- A two-circuit hydronic layout is the robust professional arrangement.
- Resistor price: GBP 47.50. The wider upgrade is a separate installation cost.

Shop: https://www.vheatc.site/