Variable Speed Booth Exhaust for Wisconsin Finishing Shops
A constant-speed exhaust fan moves more air when filters are clean and less as they load, and it runs at full speed even when nobody is spraying. Every cubic foot it moves is heated make-up air leaving the building. Wisconsin finishing shops can cut that waste with variable speed exhaust that holds steady airflow and drops back when idle. Double D installs variable speed exhaust upgrades and their controls.
Discuss your installationHolding airflow as filters load
With a pressure or airflow sensor, a variable speed drive raises fan speed as filters load. Booth airflow stays steady between filter changes.
Lower airflow at idle
When spraying stops, airflow can drop to a lower level, reducing the heated make-up air the building has to provide.
- Spray mode at full design airflow
- Idle mode at reduced airflow
- Make-up air tracking exhaust speed
- Interlocks that keep safety in place
Matching make-up air
When exhaust speed changes, make-up air should follow to keep booth pressure right. Controls link the two.
Retrofit considerations
Many existing fans can take a drive, but motor suitability, wiring and controls need checking.
Planning a booth or oven project in Wisconsin
Crews mobilize from Houston; Wisconsin is roughly 1,000 miles away, so equipment, panels and tooling are staged and shipped ahead of the install crew.
Manufacturing in Wisconsin is concentrated around Milwaukee, Madison, Green Bay, and Appleton. The sectors most likely to be specifying spray booths, blast rooms, powder systems and cure ovens there include heavy machinery and engines, paper products, food processing equipment, and metal fabrication.
Cold winters mean make-up air heaters are sized for sub-freezing intake, and booth or oven placement has to account for frost lines, snow loads on roof penetrations and winter slab work.
Frequently asked questions
Can a variable speed drive save energy?
Yes, especially by reducing idle airflow and heated make-up air.
Will airflow stay steady as filters load?
With a sensor and drive, fan speed rises to hold airflow.
Can our existing fan use a drive?
Often. Motor and wiring need to be checked.
Does make-up air need to change with exhaust?
Yes. Controls link the two to keep booth pressure right.
What is idle mode?
A reduced airflow setting when no spraying is happening.