Heating elements for water heaters

Electric back-up flow heater

Back-up electric heating element for water and space heating systems


Instantaneus water heating elements

Copper or Incoloy instantaneous water heater elements

Special Flange Heating Elements (RF serie)

Flange type heating elements designed for plug-in & quick assebly with Thermowatt Stem thermostats

Insulated Immersion Heater (RT-IH serie)

Immersion heater with bi-polar safety cut-out thermostat and level of protection IP65

Dry Stick Elements

Dry stick heating elements designed for dry heating water heater system, for an easy maintanence 

Immersion Heaters (RT-IH serie)

Domestic vented/ unvented cylinders immersion heater with bi-polar safety cut-out thermostat for maximum protection

Screw-In Heating Thread type Elements (RT serie)

Screw-in thread type heating elements designed for plug-in & quick assebly with Thermowatt Stem thermostats

Brass Flange Heating Elements (RF serie)

Brass flange heating elements designed for plug-in & quick assebly with Thermowatt Stem thermostats


Heating elements for water heaters

Heating elements transform electrical energy in heat and are widely used in most of electric appliances used for domestic as well as commercial purpuses to heat water, liquids and air.

Thermowatt produces mono-phase and three-phase heating elements in copper (99,9%), stainless steel, Incoloy, Titanium and special alloys of chrome and nickel steel. The structure of the selected components ensures high technical, electromechanical and anticorrosive qualities.


A  good knowledge of corrosive phenomena in hard and/or chloride water is essential to properly design immersion heaters.

Thermowatt has a long experience in the field and can chose the most suitable sheath material according to the type of water and requested performances. The related humidities, sometimes very high, that characterise the spaces where those elements work, require to use hermetic sealing systems to guarantee high isolation levels over the time.

The choice of suitable materials, the use of standardized manufacturing methods and rigorous products controls allow Thermowatt to ensure an excellent level of quality and reliability of its products using mass production processes as certified by the most prestigious international institutes as VDE, UL,IMQ.

four pillars, for constantly evolving ideas.

& Experience

After 50 years of developing high quality electric heating elements and thermostats we reached a unique know-how.

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Continuous investments and listening to the customer needs are key to a company policy aimed at constant innovation.

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360° Support

Our support starts during the product design and goes on, step by step, till the after-sale.

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Quality, Reliability and Safety

Our Full Reliability Approach guarantees best in class products certified by the major international institutes.

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