Dehumidifier Sizing Calculator for Blast Areas

Moisture is one of the biggest challenges when preparing and blasting surfaces inside an enclosed area. Too much humidity can cause flash rust, media clumping, coating failures, and costly delays. To keep conditions under control, contractors often rely on portable industrial dehumidifiers — but choosing the right size can be tricky.

This calculator helps you quickly estimate the airflow capacity (CFM) of dehumidification required for your specific project. Simply enter the dimensions of your blast enclosure and the number of air changes per hour (ACH) you want to maintain. The tool will calculate the enclosure volume, determine the required CFM, and suggest the size of dehumidifier you’ll need to rent.

By planning ahead with the right dehumidifier capacity, you can maintain proper conditions inside your blast area, protect surfaces from moisture-related problems, and keep your project on schedule.