Home Storage DHW Tanks
DHW Storage · Hot Water

DHW Tanks

Hygienically safe hot water at all times. Our domestic hot water tanks in SUS316L stainless steel store and maintain drinking water at safe temperatures — with legionella prevention and optional smart control integration.

Flow Wärme DHW Tank SUS316L
40–500 LCapacity range
SUS316LStainless steel grade
Stronger welds
INCOLOYHeater material
15+ YearsManufacturing experience

Product Advantages

German quality design meets proven manufacturing excellence — for decades of reliable service.

German Quality Design

Designed in Germany with a minimalist, modern aesthetic. The housing design complements any heating system and allows an aesthetically pleasing installation in plant rooms.

Built to Last

Double-sided formed welding technology makes our welds three times stronger than industry standard. SUS316L material — corrosion resistant for decades of hygienic, trouble-free operation.

INCOLOY Immersion Heater

High-grade INCOLOY immersion heater for optimal heat transfer and long service life. Heats water from 5°C to 55°C in approximately 60 minutes — with integrated legionella prevention programme.

Optimal Thermal Insulation

High-quality polyurethane foam at optimal density ensures minimal heat loss. Each unit is tested with high-pressure foam injection and infrared inspection procedures.

Wide Size Range

From 40 litres (compact single-person solutions) to 500 litres (large multi-family or commercial applications). Available in SUS304, SUS316, A0444, SUS2205 and SUS2304.

Solar Compatible

Ready to connect to solar thermal collectors for free hot water. Compatible with all Flow Wärme heat pumps as well as other common heating systems.

Product Photos

SUS316L stainless steel with minimalist German design — at home in any plant room.

DHW Tank front view
Front view
DHW Tank perspective view
Perspective view
Flow Wärme DHW Tank with heat pump and solar panels
Solar & heat pump — fully integrated Our hot water tank connects seamlessly with all Flow Wärme heat pumps and solar thermal collectors for maximum energy use and minimum running costs.
Flow Wärme DHW Tank indoor installation
Compact indoor installation Space-saving upright design for any plant room or utility space. No structural changes needed — the tank adapts to your space.

Technical Data

Capacity Range40 litres – 500 litres
Primary MaterialSUS316L stainless steel (standard)
Additional Material OptionsSUS304, SUS316, A0444, SUS2205, SUS2304
Heating ElementINCOLOY (high-grade immersion heater)
Welding TechnologyDouble-sided formed welding — 3× stronger than industry standard
Thermal InsulationPolyurethane high-pressure foam, fully insulated
Legionella PreventionIntegrated disinfection programme (57°C to 55°C)
DesignGerman design — minimalist and timeless
Manufacturing ExperienceOver 15 years
Solar ConnectionCompatible (optional solar heat exchanger)
Heat Pump CompatibilityAll Flow Wärme heat pumps and other brands
CustomisationCustom sizes, materials, cladding available on request
Quality ControlAutomated production, pressure testing, infrared inspection

Interested in our DHW Tanks?

Contact us for advice on sizing, specification and an individual quotation.