Calix Engine Heater PH1500H 1500w 230v (60-80c) 18331501833150 Calix Engine Heater PH1500H 230v (60 80 C) Calix range of PH heaters are manufactured for longevity, quality and ease of installation. They can be installed passively using the thermosiphon principle, or if an optimum position isn't available then an additional transformer & pump kit can be purchased to circulate coolant through the system. An industry leading 3 year warranty is offered on all Calix products. The PH is available in two
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