WATERHEATER of ISTO company is a water storage device with electric heating (electric + liquid heat-transfer) with cpecial coating made of high-temperature glass-titan enamel 350 micron thickness, which is deposited by liquid method with 850 degrees roasting.

nternal tank of electric ISTO waterheaters is made of Austrian special low-alloyed steel, thickness 1.8 mm.

To provide heat insulation internal tank is insulated with layer made of homogenous polyurethane foam without chlorofluocarbons, thickness 30-35mm (depending on model), and it conforms new regulations of EU of 01.01.2016 about energy saving. Thickness of insulation guarantees minimal heat losses of water heated in boiler.

Reliable electric part, Thermowatt - Italy, which conforms European requirements of quality.

Heating elements, designed by Vogel flug company, are produced on Austrian and Serbian factories (depending on model of heating element).

Integrated magnesium anode (minimal service period of anode is 2 years).

Operation modes control is realized by of internal thermoregulator.
Remote thermal indicator. Operation mode indication.

Operating pressure is 0,6MPa (testing - 1,6).

Moisture protection class IP24.

All components of waterheater are produced in European Union.
Assemblage of tank is realized in accordance with all existing regulations of European Union. It is confirmed by EURO 1 certificate and conformance certificate.

Full warranty for all parts of ISTO waterheater is 1 year.
Warranty for internal tank of ISTO waterheater is 7 yeaars!