How to calculate your cabinet heat load

How to calculate your cabinet heat load

February 2, 2026


Noren Heat Load Calculator
On our website, you can find the Heat Exchanger Selection Tool, which asks for relevant information about your specific application, such as the type of heat exchanger, mounting location, cabinet dimensions, ambient temperature, heat load, and internal temperature, to help you find the correct Heat Exchanger. The recommended unit will fit perfectly and keep your electrical panel cool.

Heat Generation
The electronics inside the electrical panel generate heat; each component contributes to the system's overall heat. Between these elements can be found variable frequency drivers VFD, motor control, circuit breakers, transformers, contactors, and more. The heat load can be estimated by the current operational temperature, as determined by the engineer who assembled the panel, or by calculating the heat added by each element.

Ambient conditions
The ambient environment can contribute heat to the system; if the electrical panel is operating in a hot climate and exposed to direct sunlight, this can also increase the temperature. The Noren calculator helps you add this information; alternatively, you can ask one of our experts to guide you in providing the requested information to receive a more accurate recommendation.

Noren Support
At Noren, we have a team of specialists dedicated to understanding your requirements and helping you choose the best cooling option. Our sales team will ask you the relevant questions and recommend the best-performing unit at the best price.

Contact us
We provide customized solutions to meet your specific needs. Contact Noren Thermal Solutions in Troy, TX, by calling 512-595-5700 to learn more about Noren heat exchangers and how our team can assist you in selecting the right solution.
Calculator, Heat Exchangers, Heat Load