Tesy 
BiLight series
A wide range of elegant electric water heaters providing hot household water to several points of use at a time.
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Elegant solutions for hot water at home
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BiLight
The water heaters of the BiLight series have been developed in conformity with the highest European safety standards and quality requirements.
BiLight Slim
With their diameter of 35 or 38 cm, the vertical models of the Bilight Slim series are suitable for installation in narrow spaces.
BiLight with a high-efficient heat exchanger
The electric water heaters of the BiLight Vertical series with inbuilt high-efficiency heat exchanger /extra power serpentine/ are a smart solution for connecting the appliance to a central heating or other similar system. It allows the utilization of alternative sources of heat energy such as solar systems, wood pellet or gas burners, etc.
BiLight with a classic heat exchanger
The electric water heaters of the BiLight range with inbuilt heat exchanger /serpentine/ are a product solution for utilization of alternative sources of heat energy such as solar thermal collectors, gas-burning and solid fuel boilers.
BiLight with two heat exchangers
The electric water heaters of the BiLight Vertical series with two integrated serpentines are a solution allowing the appliance to connect simultaneously to two separate alternative energy sources such as solar systems, wood pellet or gas burners, in addition to using electric power.
BiLight Horizontal
BiLight horizontal models* are equipped with the NEW PISTON inlet nozzle: REVOLUTIONARY SOLUTION FOR MORE HOT WATER
It provides up to 40%** more hot water for TESY BiLight horizontal models, compared to TESY BiLight horizontal models with previous PISTON nozzle.
With the NEW PISTON inlet nozzle a horizontal TESY water heater delivers a comparable quantity of hot water as a vertical one.
*BiLight horizontal 50 l is not with the NEW PISTON
BiLight Floor
Specially designed for floor assembly, the electric water heaters of the Bilight Floor series were developed to meet special architectural requirements.
BiLight Horizontal with heat exchangers
The electric water heaters of the BiLight range with inbuilt high-efficiency heat exchanger /extra power serpentine/ are a smart solution for connecting the appliance to a central heating or other similar system. It allows the utilization of alternative sources of heat energy such as solar systems, wood pellet or gas burners, etc. The range offers electric water heaters with storage capacity of 80 to 120 litres.