Unicell NT-S hot water tank

Storage volume 200 – 500 litres

Tank systems

Unicell NT-S hot water tank

Much energy can be saved not only during heating but also during hot water preparation. In this respect Froling and the Unicell are forging new paths. The vacuum enamelling and magnesium protection anode protect against corrosion and ensure resistance to high temperatures and a long life cycle. Whether it’s an optimal hot water preparation system for every heat boiler or an efficient solar tank, the Froling Unicell is fully versatile and guarantees efficient, hygienic hot water preparation.

The Froling Unicell NT-S permits efficient use of solar energy to heat domestic water. The lower element is connected directly to the solar panel system. The upper heating surface provides extra heat, meaning that the solar energy can be used all year round. It is also possible to provide extra heating using an electric heating cartridge, available separately.


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Communicating layered tanks

Thanks to their intelligent measurements, Froling layered tanks can be easily installed in the boiler room. And in rooms with low ceilings, Froling offers even more.

Up to four short slim tanks can be joined together with exact temperature layering in all tanks. Another advantage is the fast and easy assembly with the tanks just 80 mm apart.


The layered tanks can either be set up in a row or at an angle: In this case the connection couplings are fitted to the layered tank in the middle at an angle of 90°.

Brochure / EU Label

Technical documentation

For you personally

Information & advice

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Fröling Heizkessel- und Behälterbau Ges.m.b.H.
Industriestraße 12 | A – 4710 Grieskirchen


Froling is a pioneer in modern wood heating systems. The Froling signature is on many products from the groundbreaking invention of the firewood boiler with high-temperature combustion, from the wood chip burner with Lambda technology to the development of the internationally acclaimed pellet boiler.

A wide variety of well-known international quality awards underscores the ongoing success of the Austrian family company.

Heating with biomass

Heating with wood is convenient, saves on heating costs, is a secure renewable raw material and is also carbon-neutral