Indirectly fired Fast Boiler tank CAWT-400L Duplex 2205 400 liter with coil (Spiral) For heat pump

LMNT Fast Boiler Tank 400L – Indirectly fired stainless steel buffer tank with coil for heat pumps

Looking for a powerful, sustainable and future-proof boiler solution for your heat pump system? Meet the LMNT Fast Boilertank 400L , a horizontal, indirectly fired buffer tank of exceptional quality. This boiler has been specially developed for the efficient storage and rapid availability of hot water, and forms a perfect combination with sustainable heat sources such as heat pumps or solar boilers.

The tank is made of Duplex 2205 stainless steel , a high-quality alloy with excellent corrosion resistance and strength. This makes the tank resistant to high temperatures, pressure differences and condensation – which significantly extends its service life. The material is also suitable for drinking water and heating systems and offers excellent thermal and mechanical properties.

With a capacity of 400 litres and a powerful built-in spiral heat exchanger, this Fast Boiler ensures rapid transfer of thermal energy. The spiral is optimised for low-temperature heating, such as air/water heat pumps, and guarantees high efficiency even at limited supply temperatures.

The LMNT 400L is suitable for wall or floor mounting and has multiple connection options (top and side connections) for flexible integration into any installation concept. Thanks to the high insulation value of the PU foam layer, heat losses remain minimal and the system optimally efficient.

✅ Key benefits:

• 400 litre capacity – generous storage capacity for hot water

• Duplex 2205 stainless steel – durable, corrosion resistant and suitable for high loads

• Indirectly heated – ideal combination with heat pumps or solar energy systems

• Integrated heat exchanger – high transfer efficiency via spiral tube

• Fast Heating Technology – shorter heating time, immediate hot water availability

• High-quality PU insulation – low downtime losses and energy-efficient operation

• Compact and horizontal design – easy to install in technical rooms with limited height

⚙️ Applications:

• Air/water and ground/water heat pumps

• Solar boiler systems

• Hybrid heating systems

• Residential construction (detached, apartments), utility construction, sports complexes, agricultural applications

The LMNT Fast Boilertank 400L from Coolmark offers a reliable, powerful and efficient solution for every project where hot water comfort and energy efficiency are central. This boiler is designed for professionals who work with sustainable techniques and customers who place high demands on quality, performance and future-proofing.