Since 1992, SunEarth has teamed with Edward’s Solar Hot Water (now part of Rheem Australia), a world leader in the manufacture of stainless steel storage tanks and boilers, to market a packaged thermosiphon system under the brand name ‘SunSiphon’ in North America and the Pacific Basin. The SunEarth/Edward’s collaboration offers the best of two continents – the world’s finest thermosiphon storage tank and rugged, high performance SunEarth flat plate solar collectors. SunSiphon systems are available both with and without integrated heat exchangers for hard freeze and non-freeze climates, respectively. Thermosiphon systems have no moving parts and use no parasitic energy in their normal operation. The simplicity and long-term reliability of the SunSiphon thermosiphon system remains its principal selling feature.