Hitco Electricals Pvt. Ltd. Manufactures Commercial Water Immersion Heaters. Hitco Electricals Pvt. Ltd. Is an ISO 9001:2008 accredited company. The company manufactures Commercial and Domestic Heating machines. The Commercial Water Immersion Heaters are manufactured from Copper or SS tubing brazed with Brass flange and duly nickel plated. The Commercial Water Immersion Heaters must be fully immersed in water before putting in operation.