How to size a Cabinet Enclosure Heater

Finding a cabinet enclosure heater does not have to be a game of “trial and error.” The importance of protecting your electronics isn’t something you should mess around with. An improperly sized cabinet enclosure heater can damage your electrical components and cost you in repairs. Depending on what’s in the cabinet, it can cause larger problems.

Cabinet Enclosure Heater Sizing

Start with the surface area – Measure the height, width, and depth of your enclosure. Find the Surface Area by: Surface Area = 2(length*width + length*height + width*height).

Find the temperature differential – By First figuring out the lowest temperature your cabinet will experience where it is located (ambient temp).

Then you need to figure out what the desired operating temperature is for your enclosure. With these two numbers, you can figure out the temperature differential by subtracting the ambient temperature from the desired temperature.

Determining Wattage Requirements for Enclosure Heaters

Why You Need to Get it Right

Many enclosures, especially those located outside, are prone to moisture and condensation. Moisture is the bane of all electronic components. Your enclosure heater needs to be sized correctly to keep your components dry without overheating. The proper wattage will ensure the proper heating occurs throughout the cabinet.

Speak to a Professional at Heatrex

All you need is the surface area of your cabinet and the heat differential. Add in a few of the other details about your cabinet, and a professional can tell you what kind of heater will work best for you. Of course, if you already know precisely the size and wattage of the heater you require, then go ahead and choose one of the high quality heater enclosures from Heatrex. Sizing your cabinet enclosure heater can become complex. If you are unsure, you can contact a professional.