Ideal for new build
Compact appliance offering the following functions: ventilation, central heating, DHW heating and cooling
Energy-efficient inverter technology
Ventilation with up to 90% heat recovery
Well insulated 235 l cylinder for high DHW convenience
May be combined with a solar thermal system
Sturdy, sound-optimised casing design
Integral high efficiency heating circuit pump
The compact LWZ 504 integral ventilation system with passive house certification offers every comfort and convenience worthy of an energy efficient house. The system draws its energy for hot water and cosy room temperatures from the outdoor air. The advanced ventilation management system ensures that heat remains in the building. It recovers up to 90 % of the heat from the extract air. A pleasant, healthy atmosphere and high efficiency can therefore be perfectly combined. Output-regulating inverter technology also ensures high efficiency. It generates precisely the amount of heat that is currently required. In this way, high output levels can be achieved even at low temperatures.
The advanced, high efficiency heating circuit pump and excellent DHW cylinder insulation ensure economical energy use. Those who want to make themselves even more independent of rising energy prices can fit the appropriate accessories (ISG plus) and operate the LWZ 504 with photovoltaic power generated on site. The large, user friendly matrix display ensures straightforward operation of the award-winning advanced technology.