Custom Solutions for Your Heating Needs HDI application and design engineers can create customized solutions to your heater elements needs to help save you time and money. Please contact us to discuss the specific needs and requirements of your application. Design Considerations - Total Wattage Consider the total wattage needed to sufficiently heat your part - heat losses through convection and radiation may impact the total wattage needed. - Heater Area What is the best shape to fit your application? Larger heaters cost more than smaller ones, but the lower watt density of larger heaters leads to longer heater life. - Heater Size and Weight Are there any limitations to the size and weight of the necessary heater? - Useful Conversions 1 Watt = 3.412 BTU/hr = 14.3 cal/min 1 BTU = 1054 Watt sec = 252 cal ºF = (1.8 x ºC) + 32 ºC = (ºF - 32)/1.8