VAILLANT FLEXOTHERM 8KW (230V) GSHP

The Vaillant flexoTHERM 8 kW (230 V) is a high-efficiency ground source heat pump designed for reliable, low-carbon space heating and hot water production when paired with an indirect cylinder. It uses energy from the ground via a closed-loop ground array or can be configured for water-to-water applications with suitable accessories. Installed indoors, it delivers steady, quiet performance and is well suited to underfloor heating and low-temperature radiator systems.

Built for flexibility and integration, this unit connects to Vaillant eBUS controls for weather-compensated operation and smart scheduling. Its modulating operation helps match output to demand, improving comfort and seasonal efficiency. It’s a robust choice for new builds and deep retrofits targeting lower running costs and reduced emissions.

• Ground source heat pump (brine/water), 8 kW nominal output
• Single-phase 230 V power supply
• Indoor unit for closed-loop ground arrays; compatible with water-to-water setups with accessories
• Provides space heating and domestic hot water when used with an indirect cylinder
• Quiet, efficient operation suitable for residential applications
• Optimized for underfloor heating and low-temperature radiators
• Weather-compensated and smart control via Vaillant eBUS
• Designed and supplied by Vaillant Group UK Limited