Technology & results
Better airflow at the condenser. Better conditions for cooling.
The VairTEX™ Air Director is a passive retrofit for suitable commercial HVAC and refrigeration equipment. It directs condenser discharge airflow upward and away from the unit, supporting heat rejection and helping reduce hot-air recirculation.
No added power. No moving parts.
How it works
Improve discharge airflow where heat leaves the system.
Air-cooled condensers transfer heat into the surrounding air. How that air moves through and away from the equipment affects heat rejection and cooling performance.
Mounted above a suitable condenser fan, the VairTEX Air Director guides discharge airflow in an upward, axial direction. It helps hot air clear the unit and reduces the opportunity for discharged air to return to the condenser intake.
Improving those airflow conditions can reduce energy use and support cooling capacity.
Evidence, with context
Understand the result behind each number.
Browse the full research & report library →Measured power, recorded compressor load and normalized annual energy describe different aspects of performance. Each case identifies the metric and scope.
Average measured RTU
power reduction
Testing at Roche Bros. recorded a 16.94% average reduction in rooftop-unit power. The highest measured reduction was 21.05%.
The case also reported increased cooling in the 80–90°F ambient range when the equipment was short of cooling capacity.
Read the Roche Bros. report →Lower average recorded
compressor load
Condenser C recorded 22.1% lower average compressor load in June–July 2023 compared with June–July 2022.
Reported installation experience: five Air Directors were installed at the store without disruption to operations.
Read the July 2022, 2023 & 2025 comparative validation report →The comparative report estimates 2025 compressor horsepower from ReqPower(%); direct HP/kW telemetry was not available.
Normalized annual RTU
energy savings
The Dilfo measurement and verification case reported 16.7% normalized annual rooftop-unit energy savings at one installation.
Read the measurement and verification report →Results relate to the equipment and conditions studied; project performance varies. The Save-On-Foods result is a recorded compressor-load comparison; the Roche Bros. result measures RTU power; the Dilfo result uses normalized annual RTU energy.
Review installation reports ↓Research & reports
Technical research for engineers and project teams.
Review the airflow research and installation reports to understand the test conditions, equipment and measurement methods behind the results.
Carleton University research reported a 48.7% increase in axial discharge airflow and approximately 5% improvement in coefficient of performance under the study’s conditions. The airflow increase is a distinct metric from energy savings.
01 / LABORATORY RESEARCH
Carleton University
Read the Carleton research → Read the 2020 journal article →02 / INSTALLATION REPORTS
Field evaluations
Roche Bros. Supermarket → Dilfo: 1481 Cyrville Road → Tallwood: City of Ottawa Archives — final report, October 10, 2018 → Save-On-Foods Store 2213: July comparative validation → Browse the full research & report library →Equipment fit comes first
A retrofit assessed for your equipment.
VairTEX adds no powered components or moving parts. Equipment compatibility, mounting and installation requirements are reviewed for each application.
For multiple units or sites, start by identifying suitable equipment and defining the installation scope.
Ready to assess your equipment?
Tell us what equipment you operate and where it is located to discuss suitability and an installation quote.