The new hybrid combination by ROTEX is called “ROTEX HPU hybrid“, and is especially efficient, comfortable and reliable. The new ROTEX HPU hybrid combines a regenerative air-/water heat pump with energy-efficient gas-fuel value technology. The inner unit of gas-condensing boiler and heat pump interior unit normally don’t need more room than a conventional gas boiler. With flow temperatures between 25 °C to 80 °C the ROTEX HPU hybrid is suitable for any type of building. The ROTEX Hybrid Logic Control always chooses the cheapest mode depending on the current price for electricity and gas.