
Commercial Air Handling Solutions
Get the air-handling configuration your application requires without the fully custom price. Gradian combines space-conscious layouts, flexible component selection, and responsive engineering to address challenging capacity, footprint, efficiency, and design requirements.
Space-Optimized Equipment Layouts
Flexible, Application-Specific Designs
Air Handling & Energy Recovery Configurations
Engineering-Led Support
Your First Call For Complex Commercial Cooling
Small Footprint
Maximize available capacity within project footprint. Gradian configures air handling layouts around real-world space constraints instead of forcing you into standard catalog designs
Flexible Designs
Adapt air handling and energy recovery configurations to meet application-specific design requirements without automatically moving to a fully custom solution.
Precise Component Selection
Integrate proven fan, motor, coil, and energy recovery technologies from established vendors to balance performance, efficiency, and sound requirements for the application.
Bring Us Your Air-Side Challenge
Not every application fits a standard catalog configuration. Gradian combines flexible equipment architectures with responsive engineering to address challenging capacity, footprint, airflow, and energy-recovery requirements.

Air Handling Units
Condition and move a single airstream with AHU configurations designed around your application, available footprint, and performance requirements.

Energy Recovery Units
Transfer energy between exhaust and incoming air streams with ERV configurations designed around your ventilation requirements and available space.

When "That Doesn't Exist" Isn't an Answer
If a standard fan array, heater configuration, or component combination isn't in a catalog, we engineer one that is — instead of telling you to redesign around what's available.
How a Project Comes Together
From the first conversation to your modified unit arriving on-site, the process stays straightforward — your equipment comes to our facility, we configure it to your application, and we ship it directly where it needs to go.
Inquiry
Get in touch and start the conversation with our team.
Qualification
We confirm that the application and requirements fit.
Design
We carefully configure the unit to your specific needs.
Price & Submittal
We finalize pricing and documentation.
Ship to Our Facility
Your equipment arrives at our facility for modification.
Ship to Site
We ship the completed, modified unit directly to your job site.
Decades of Air Handling Expertise
We've been in commercial air-handling modifications for a long time. Whenever cooling requirements get complex, Gradian provides air-handling and energy recovery solutions built for the most challenging commercial applications.
K-12 & Higher Education
Hospitals
Casinos & Hotels
Battery Storage
Semiconductor Facilities and More

“We're the company you want to call when you need a problem solved on the air side.”

Questions, answered
Air handling modifications refers to customizing air handling unit or energy recovery ventilator configurations — components, layout, capacity, or footprint — to fit application requirements that a standard catalog unit can’t meet.
No Hassle. Just Answers.
When something's not adding up on your unit, the last thing you need is a ticket number and a callback promise. Call us, and you're talking to the engineers and production team who actually know your equipment. No queue. No script. No chatbot standing between you and an answer.
Direct Line to Engineering - Skip the tiered support funnel and get straight to the people who designed your unit, so problems get solved in one call instead of three.
Production Floor Insight - Need to know what's happening with your order right now? Reach the team building it, not just a status update generated from a database.
No Chatbots, No Scripts - Every conversation is with a person who actually understands your application.
