2111-00481 | Coleman-Mach Everest VS-18 Variable Speed Rooftop Air Conditioner | 18,000 BTU | Black
The Coleman-Mach Everest VS-18 Variable Speed RV Air Conditioner delivers premium cooling performance with quieter operation, lower power consumption, and smoother startup than traditional rooftop RV AC units. Its advanced inverter-driven compressor automatically adjusts output in real time for faster cooling, improved efficiency, and more consistent comfort in any environment.
Designed for modern RV travel, the VS-18 is generator and inverter friendly, making it ideal for shore power, off-grid setups, and limited-amperage camping. With 270 CFM airflow, a compact rooftop footprint, and compatibility with both ducted and non-ducted systems, the Everest VS-18 combines powerful performance with long-term Coleman-Mach reliability.
Please Note: The rooftop unit, ceiling assembly, and thermostat are sold separately and are all required for installation.
Everest VS-18 Air Conditioner
360° Airflow Ceiling Assembly / ADB (2111-0044)
Wall Thermostat (2111-0043)
Coleman-Mach Everest VS-18 Variable Speed RV Air Conditioner
The Coleman-Mach Everest VS-18 was engineered for RV owners who want more than just cold air. Built with advanced variable-speed inverter technology, the VS-18 delivers faster cooling, quieter operation, and dramatically smoother power usage compared to traditional rooftop RV air conditioners.
Unlike conventional single-speed RV air conditioners that constantly cycle on and off at full power, the Everest VS-18 continuously adjusts compressor speed in real time to maintain a more stable interior temperature. This inverter-driven design reduces startup strain, lowers power consumption, and eliminates the loud startup blasts common with traditional rooftop units.
The result is a quieter, more comfortable RV experience whether you're plugged into shore power, running a generator, or operating from an inverter and battery system.
The Everest VS-18 features a built-in soft-start inverter compressor that dramatically reduces startup surge compared to traditional RV air conditioners. This makes it an excellent choice for generators, inverter setups, solar systems, and campgrounds with limited amperage availability.
Why RV Owners Are Upgrading to the VS-18
- Variable-Speed Cooling Technology – Automatically adjusts output based on cooling demand for improved comfort and efficiency
- Quiet Operation – Avoids the loud full-speed compressor cycling common with traditional rooftop RV air conditioners
- Soft-Start Compressor Design – Lower startup power demand makes it significantly more generator and inverter friendly
- 270 CFM Airflow – Moves air quickly and evenly throughout the RV for faster cooldown times
- 360° Airflow Ceiling Assembly Compatibility – Helps distribute conditioned air evenly while reducing hot and cold spots
- Compact Rooftop Footprint – Smaller 800 sq. in. footprint helps maximize roof space without sacrificing performance
- Ducted or Non-Ducted Compatibility – Flexible installation options for a wide range of RV layouts
Built for Real RV Conditions
The Everest VS-18 was designed specifically for demanding RV environments and long-term reliability.
- Powder-coated steel base pan for increased durability
- Hydrophobic-coated coils help shed water and reduce freeze-up potential
- Improved coil protection against road debris and hail
- Engineered for high-heat environments and extreme summer travel conditions
- Compatible with standard 14.25" x 14.25" RV roof openings
Ideal For
- Solar + inverter systems
- Quiet nighttime operation
- Boondocking and generator-powered setups
- Travel trailers, fifth wheels, and motorhomes
- Campgrounds with limited amperage
- RVers sensitive to startup power spikes
- Customers looking for premium comfort and efficiency
Popular upgrade choice for owners replacing...
The Everest VS-18 is a popular upgrade choice for RV owners replacing older or louder rooftop air conditioners.
- Coleman-Mach 15
- Coleman-Mach 3
- Coleman-Mach 10
- Coleman-Mach Power Saver Series
- Various Dometic units including Brisk Air, FreshJet, Penguin, and more
- Various Furrion units including Chill Cube, Chill HE, and more
Traditional RV air conditioners typically operate at either full power or completely off. The Everest VS-18 continuously adjusts compressor speed to match real-time cooling demand, resulting in quieter operation, more stable temperatures, lower energy consumption, and reduced startup surge compared to conventional rooftop RV AC systems.
Documentation | |
| Limited 2 Year AC Warranty | DOWNLOAD |
| Installation, Operation & Maintenance | DOWNLOAD |
Specifications | |
| Warranty | 2 Year |
| Ducting Type | Either Ducted or Non-Ducted |
| Weight (lbs) | 68 |
| BTUs | 18,000 |
| Electrical Rating | 115 VAC, 60Hz, 1 Phase |
| Air Delivery CFM | 270 |
| Color | Black |
| Heat Pump | No |
| Power Saver | Yes |
| Condensate Pump | No |
| Soft Start | Yes |
| Mfg Part # | 2111-00481 |
