Ceiling Mount Evaporators for Commercial, Specialty, & Heavy-Duty Vehicles
Ceiling-mount automotive evaporators, often called “hang-down units,” attach directly to the vehicle’s ceiling and blow chilled air directly into the cabin. O2 Cool Manufacturing’s ceiling-mounted systems are usually found in larger vehicles that require more powerful, centralized cooling. We offer ceiling mount evaporators for commercial, specialty, and heavy-duty vehicles.
Ceiling-Mount Automotive HVAC Evaporators
The overhead location of ceiling-mount evaporators allows cooled air to flow freely downward and disperse evenly throughout the cabin space. It also allows placement of the air intake directly into the space needing cooling, keeping in mind that you don’t “make cool” you remove heat. This configuration is particularly beneficial for larger or longer vehicles where standard front-mounted HVAC systems might not reach all areas of the cabin.
For Commercial Vehicle Use
Ceiling-mount evaporators for commercial vehicles like buses, vans, and RVs typically deal with moderate cooling demands. They often have customizable zones so that both the driver and passengers can have their own temperature settings. Other considerations include:
- Energy efficiency and compact design
- Quiet operation
- Adjustable airflow distribution
- Utilization of overhead space where cabin space is limited
Commercial ceiling-mount evaporators need to be durable; however, they don’t require the same extra-sturdy construction used for industrial or specialty vehicles.
For Heavy-Duty Vehicle Use
Vehicles such as long-haul trucks or construction equipment operate in more challenging environments, so ceiling-mounted evaporators for heavy-duty vehicles can handle higher cooling loads for longer hours. They can also withstand harsher jobsite conditions, including:
- Dust
- Dirt
- Vibration
- Uneven terrain
Heavy-duty hang-down units often have features like self-cleaning filters to lower the maintenance requirements, and their location provides easy access for repairs.
For Specialty Vehicle Use
We design our ceiling-mounted evaporators for specialty vehicles to work well in high-stress situations. Many of these customized HVAC systems are mission-critical, so evaporators contain redundant features to keep working in case of partial failure. Of course, condensate drainage is a key factor since the evaporator may be directly above sensitive electronics.
These evaporators frequently contain specialized components for unique air handling needs, such as antimicrobial coatings, fire-resistant materials, or reinforced housings. Hang-down units are also more compact and reserve premium useable space for the vehicle’s primary function.

Why Choose O2 Cool?
Focus on Safety and Comfort
Innovative and Energy-Efficient Solutions
Reliable, Durable, High-Quality Products
Additional Benefits
- Partnerships with Local Universities for Innovative Technologies
- Mission to Exceed Customer Expectations
- Focus on Vehicle Types, Including Public Transit, School Buses, and Emergency Vehicles
- Commitment to Sustainability and Environmental Responsibility
- Customization Options for Individual Customers
- Exceptional Warranty and Customer Support Services