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.