Copyright © 2011 LED Lighting and Solar Warehouse, Mark Walsh Tel. 061 302 516 / 0811223076 email: contact us   Clean Heat Solar Water Heating The heat collectors are made of the latest solar technology Heat collectors comprise of evacuated glass tubes which have higher heat collecting efficiency than flat panels. Heat collectors are vacuum sealed which renders it resistant to climate changes and extreme tempera-tures. This enables the system to heat the water directly without any anti-freeze chemicals which results in higher efficiency. The systems are manufactured in South Africa and are SABS approved. Low pressure systems are available with a capacity of 80L, 150L and 200L. High pressure systems are available with a capacity of 100L and 200L.