Rooftop units, commonly called RTUs, are the workhorses of commercial HVAC systems, but they’re also bulky, visually unappealing, and exposed to every weather event a roof sees. Property owners and facility managers shopping for an equipment screen often start with a vague idea of what they need and end up unsure of what actually separates one screen system from another. This guide breaks down what to look for when sourcing aluminum equipment screens specifically for RTUs, from sizing considerations to material questions that affect how long the screen actually lasts.
RTUs Present Different Challenges Than Other Rooftop Equipment
Not all rooftop mechanical equipment is the same, and RTUs come with their own set of screening considerations. They’re typically larger and heavier than standalone condensers; they generate more heat that needs to dissipate, and they often require service access on multiple sides for routine maintenance. A screen designed for a smaller piece of equipment, like a single condenser or generator, won’t necessarily translate well to an RTU footprint without adjustments to panel height, spacing, and access points.
That means a generic, off-the-shelf screen panel is often the wrong fit. RTUs need a screening system that’s sized to the specific unit’s dimensions, positioned to allow technicians to reach service panels without dismantling the structure, and ventilated enough that the unit doesn’t trap its own exhaust heat and reduce operating efficiency.
Why Aluminum Holds Up Better Than Alternatives
For a structure that’s going to sit on a roof for decades next to equipment generating heat and moisture, material choice isn’t a minor decision. Steel screening on a rooftop is fighting a losing battle against rust, particularly anywhere condensation drips off the unit onto the screen itself. Wood is a non-starter in this application; it simply does not survive sustained rooftop exposure without constant replacement. Aluminum, by contrast, is naturally resistant to corrosion and doesn’t require painting, sealing, or rust treatment to stay functional. It is also light enough that it does not add meaningful structural load to a roof that’s already carrying the weight of the RTUs themselves, which matters when a structural engineer is reviewing what else can go on that roof.
What to Look for in a Manufacturer
When sourcing equipment screens for RTUs specifically, a few questions tend to separate manufacturers worth working with from ones that aren’t:
Will the screen be sized to the actual unit dimensions, or is it a stock panel size that may leave gaps or crowd service access points?
Is the louver spacing engineered for airflow, so heat generated by the RTU has somewhere to go, or is it a solid panel that traps heat against the unit?
Is the aluminum domestically sourced and fabricated, which tends to correlate with tighter tolerances and more consistent corrosion resistance than imported material?
Can the manufacturer coordinate the screen’s finish with the rest of the building’s rooftop and facade elements, so it doesn’t look like an unrelated add-on?
How Sharchs Approaches RTU Screening
Sharchs builds aluminum equipment screens sized and engineered around the specific rooftop units they’re concealing, rather than offering a one-size panel system. Our louvered designs are built to protect RTUs and similar equipment from sun exposure while preserving the airflow those units need to run efficiently, and the screening also makes it considerably harder for birds and other wildlife to nest near equipment housings and electrical connections, which is a more frequent maintenance issue than most facility managers anticipate.
Every screen is fabricated in the U.S. from American aluminum, and our design team works directly with architects, contractors, and property managers to fit the screen to the roof’s actual layout, including service access requirements around the units. For projects that need additional rooftop or facade shading alongside equipment screening, our aluminum wall screens and exterior sun control devices are designed to work as a coordinated system rather than mismatched add-ons.
Frequently Asked Questions
Not when properly engineered. Louvered aluminum screens are spaced to allow heat dissipation and airflow, so the RTU isn’t trapping its own exhaust heat.
Generally no. Screens should be sized to each unit’s footprint and service access needs, which is why custom-engineered screening outperforms stock panel systems on roofs with varied equipment.
A properly designed screen accounts for service panel locations and leaves clear access points, so routine maintenance doesn’t require removing or disassembling the structure.
Aluminum typically costs less over the life of the structure because it doesn’t require the rust treatment, repainting, or replacement that steel screening eventually needs.
Get a quote for Your RTU Screening Project
For a screen sized to your actual rooftop units rather than a generic panel, contact the Sharchs team with your specifications. We look forward to working with you soon!