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 since 1984, using the most updated technology in its domain. Sigma, is ISO 9001:2000 certified .

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. 

The Sigma collector family is characterized by aesthetic design and durability.   Top quality must be able to withstand the toughest testing. Sigma solar collectors have been certified with the highest certificate for solar collectors, the solar keymark sign , since 2005. 
All the quality assurance measures have the aim of ensuring that excellence is secured for customers in years to come.

Sigma offers high-tech solutions for water heating for household requirements and heat recovery that reflect today's demand for sustainable construction. 

Sigma solar systems are durable and reliable. 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 collective surface all over Greece have the Sigma sign. 

Sigma solar systems are secured 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 + 165°C 

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 us for the best prices and the best quality