Calefacción Eléctrica S.A. de C.V., also known by its Brand Name CALELEC Heating, has more than 30 years of experience designing and manufacturing electric and gas air and water heaters for several applications in the HVAC industry, home appliances, industrial processes, etc. We specialize in: Air Heating Water Heating Humidity Control Customized Designs We work under the following standards: NEMA NOM-1 1 223 99 ANCE UL 795 ANSI Z21.20 WW-F-2743 A ISO 9001 (in process) CAN/CSA-C22.2 No. 110-94 CAN/CSA-C191 ANSI/UL-499 CSA/C22.2 No. 46-M1988 ASME