Tesy a fost infiintata initial in 1990 sub numele de Ficosota. In 991 a aparut si compania TErmoSYstem si marca TESY. Incepand cu 1997 a inceput expansiunea extrerna a Tesy in afara Bulgariei.

Boiler electric BelliSlimo Lite 50
1.556,52 RON 1.659,90 RON
Boiler electric BelliSlimo Lite 80
1.677,90 RON 1.789,90 RON
Boiler cu serpentina EV12S 300
3.381,98 RON 3.607,49 RON