Sigma, offers high-tech solutions for heating, ventilation, cooling and heat recovery that reflect today's demand for sustainable construction, manufacturing solar thermal collectors , storage tanks and solar hot water systems since1984, using the most updated technology in its domain.

The company owns a private, modern factory, in the Volos Industrial Area, in central Greece. Friendly to the environment, saving energy and no polluting the environment. Solar energy is clean and lessens our dependence on fossil resources.

Sigma solar systems have been installed in many private residences, hotels, stadiums, factories etc., either on tilled roof or level terrace, in remote as well urban areas.

Sigma solar systems are durable and reliable. So our company has gained the respect of our clients because of the high quality of our products, on time delivery, quality control through the manufacturing procedure and the low prices. Our clients themselves are vivid advertisement. More than 1.000.000 m2 of selective surface all over Greece have the Sigma sign.

Sigma offers high-tech solutions for heating, ventilation, cooling and heat recovery that reflect today's demand for sustainable construction.

Sigma, environmentally sensitive , choosing geothermal energy for heat and cooling, using the soil or groundwater as energy source, became the exclusive representative in Greece.

Sigma solar systems SI-120, SI-150, SI-200 and SI-260 obtain all the technology standards because they are manufactured according all the international specifications: EN 60335, EN 60335-2-21.

Sigma solar systems supply security against overheat, protection against freeze and longer duration of life, because of the special thermal liquid SI-P90 that makes the solar system work in temperatures between -20°C to + 160°C.

Sigma supplies full guarantee in all of its solar systems, full accessories support and last but not least: specially trained technical staff in order to supply its services all over Greece.

Sigma products are ISO 9002 identified since 2000 and Sigma solar collectors have been certified with the highest certificate for solar collectors, with the solar keymark sign , since 2005 .

Sigma solar systems are constantly checked for the best quality and results, proofs to the overall performance of our products, for which we offer long term guarantees.

Anywhere you are, either in Greece or abroad, do not hesitate to contact with us for the best prices and the best quality.