Cruise-n-Comfort VES Icebox | 12V Undermount AC for Sprinter

This is a comprehensive two-part installation: the Cruise-n-Comfort VES Icebox undermount AC system, plus the Sandy Vans custom overhead headliner shelf that houses the evaporator. Plan for 16 hours with two experienced installers — a helper is strongly recommended for running refrigerant lines and setting the headliner shelf into position.

System Layout

The evaporator unit mounts inside the overhead shelf and connects to the condenser outside the van via four refrigerant hoses. The condenser bracket mounts to the van exterior (drilling required). The Control Hub sits inside the van and ties everything together. Airflow routes through 4-inch flex ducting down through the headliner shelf.

Hose Routing

Four refrigerant hoses run between the condenser and evaporator. Route them cleanly through the van body, avoid sharp bends, and secure every 12 to 18 inches. Critical: Hose 4 (the condensation return line) must be wrapped in foam pipe insulation along its entire run. Skipping this causes the hose to sweat and drip inside the van — a common issue that is easy to prevent upfront.

Drain and Ducting

The condensation drain exits via a 3/8-inch line. Route it to drain outside the van, not into a cavity. The 4-inch flex duct connects from the evaporator outlet through the headliner shelf opening into the van interior. Test airflow before sealing the headliner shelf.

Condenser Bracket

The condenser bracket mounts to the van exterior and requires drilling through the body. Use the supplied bracket assembly and hardware. The dual-fan condenser weighs 11.7 lbs, so have a helper support it during positioning. The rock guard mounts over the condenser fins with the supplied hardware.

Headliner Shelf

The Sandy Vans overhead shelf is sized to accept the VES evaporator and integrates with the van's existing headliner. Position the evaporator inside the shelf, connect the duct, then secure the shelf to the van ceiling. Confirm all hose connections are tight before closing up.

First-Run Checklist

• Verify all four refrigerant hose connections are seated and leak-free
• Confirm Hose 4 is foam-insulated its full length
• Check drain line exits cleanly — no pooling inside the van
• Confirm 4-inch duct is seated and sealed at both ends
• Power on the system and verify the DT-05 thermostat communicates with the Control Hub
• Run a 15-minute cool-down cycle and check for unusual noise or vibration

Post-install product support is provided by Cruise-n-Comfort. Contact Chris at CnC for system questions after installation. Sandy Vans handles install questions at contact@sandyvans.com or (619) 812-1903.

Van air conditioning used to mean cutting a big hole in your roof, living with constant compressor noise, or parking near shore power. Undermount DC systems changed that. If you're comparing Sprinter AC options, here's how the real decisions break down, starting with what customers ask most.

1. Where Does the Condenser Live?

This is usually the first decision and it drives everything else. Rooftop units (Dometic RTX 2000, Velit 2000R) mount on the roof and duct air down through a ceiling panel. They're self-contained, simpler to install, and don't require body drilling for the condenser. The tradeoff: they add height (important for garage clearance) and the compressor noise sits right above your head.

Undermount units (Velit 2000U, Cruise-n-Comfort VES Icebox) mount the condenser outside the van body at the rear or side, and the evaporator goes inside a bench or overhead shelf. Quieter in-cabin, no height added to the van, but more involved install and refrigerant line routing.

Rule: If you use garages, ferries, or covered parking with height limits, or you already have a roof rack build, undermount is probably your answer. If you want a simpler install window, rooftop is easier.

2. How Much Power Do You Have?

All these systems run on 12V DC. The Dometic RTX 2000 draws 10 to 17A. The Velit 2000R is in a similar range. The Cruise-n-Comfort VES Icebox pulls 38 to 55A at full load, with a variable-speed compressor that runs lower in mild conditions.

Rule: If you're running solar with a solid lithium bank (200Ah+), most systems will work. The VES Icebox is built for serious electrical systems. It's a full 10,000 BTU unit with real cooling output to match.

3. Cooling Output vs. Van Size

The Dometic RTX 2000 and Velit 2000R are rated around 7,000 to 8,000 BTU, solid for a standard 144-inch or 170-inch High Roof build with good insulation. The VES Icebox runs 10,000 BTU, giving you more headroom for larger vans, poor insulation, or desert heat.

Rule: For a well-insulated 144-inch Sprinter in a temperate climate, 7,000 to 8,000 BTU is plenty. For 170-inch or 170 EXT builds, desert use, or poor insulation, 10,000 BTU gives you real margin.

4. Noise

The VES Icebox measures 45 dB on Low, 56 dB on Medium, 63 dB on High. The variable-speed compressor runs quietly in mild conditions and ramps up when needed. Because the condenser mounts outside the van body, compressor noise in the cabin is significantly lower than rooftop units, where the compressor sits directly above the ceiling.

Rule: If you're prioritizing sleep quality in hot locations, undermount puts the compressor noise outside instead of overhead.

5. Install Complexity

Rooftop units (Dometic RTX 2000, Velit 2000R) require a roof cutout, wiring, and control panel work. The VES Icebox system is more involved: refrigerant line routing through the body, condenser bracket drilling, Control Hub wiring, and overhead shelf integration. Both are DIY-able for an experienced builder, and Sandy Vans professional installation is available for either.

The reason most VES Icebox customers choose professional installation is the hose routing. Hose 4 (the condensation return) has to be foam-insulated along its full run or it will sweat and drip inside the van. That detail is easy to get right once and expensive to fix after the build is closed up.

How the Options Compare

Rooftop systems (simpler install, no height clearance buffer, compressor sound above the ceiling):

• Velit 2000R Rooftop — the rooftop unit we use on most standard Sprinter builds, available on our site
• Dometic RTX 2000 — one of the most recognized brands in van AC, available on our site with install kit

Undermount systems (quieter cabin, no height added, more involved install):

• Velit 2000U Under-Bench — a solid undermount option for bench-forward builds, available on our site
• Cruise-n-Comfort VES Icebox + Sandy Vans Shelf — this system, 10,000 BTU, designed for overhead shelf integration

Pre-Order Checklist

• Confirm your van is a 2007+ Mercedes-Benz Sprinter High Roof (NCV3 or VS30)
• Check your battery bank: 200Ah+ lithium recommended for the 38 to 55A AC draw
• Verify rear clearance for the condenser bracket location
• Decide: Sandy Vans pro install vs. DIY with refrigerant line experience
• Factor in the 4 to 5 week lead time on the CnC system when planning your build

Why This System

The Cruise-n-Comfort VES Icebox paired with the Sandy Vans headliner shelf is purpose-built for Sprinter builds that need serious cooling without the rooftop compromise. Cruise-n-Comfort handles the AC engineering and post-install product support. Sandy Vans built and refined the overhead shelf integration, and we handle every install ourselves.

Questions about fit for your specific build? Contact our team at contact@sandyvans.com or (619) 812-1903 before ordering.