Dial In Your
Comfort System.

No two rigs are the same. Let's configure the optimal placement, venting, and power for your build.

Find Your Optimal Placement

Inside or outside? It depends on your space and preference. Check out these real-world setups to get inspired.

Tent Corner · Foot Area

The best choice for max efficiency and security. It eliminates duct heat loss for faster cooling, while keeping your unit safe from theft and weather.

Platform Rack · Cab Roof

The best choice for saving interior space. It keeps your sleeping area clear for comfort, while the short duct path ensures maximum cooling efficiency.

Spare Tire Basket · Side Window Shelf

The best choice for utilizing exterior gear. It secures the unit to side or rear mounts to save cabin space, ideal for compact 4x4s or rigs with full roofs.

(Note: Ensure mount size is min 24"x12" / 60x30cm and rated for 55lbs / 25kg.)

Gear Case · Camp Table

The best choice for ultimate flexibility. It requires no mounting hardware and isolates vibration for quieter sleep. Simply run the ducts up to your RTT, or even an annex.

In-Tent
Rooftop
Side Mounts
Basecamp

Route Your Airflow

To maximize cooling efficiency, follow the golden rule: create a closed loop. Connecting two ducts is critical as it ensures the unit vents heat fully outside or recirculates pre-cooled air, rather than constantly battling hot ambient air.

Unit Outside?
Connect the FRONT ducts to
cycle cold air in.
Unit Inside?
Connect the REAR ducts to
vent heat out.

Option 1: Existing HVAC Port

Some hard-shell tents come with pre-cut HVAC ports. This offers the cleanest look. But first check your port size:

  • Too Small: STOP. Do not squeeze the duct to fit, as restriction causes overheating and efficiency loss. Use Option 2 instead.
  • Too Large: If the port is wider than the duct, the connection will be loose. We recommend purchasing an adapter to bridge the gap and ensure an airtight seal.

Option 2: ZERO BREEZE Tent Adapter

No ports? Don't cut your canvas. Our custom foam board adapter allows you to route ducts through any window or door.

  • The Sandwich Method: It sandwiches your tent fabric between two panels. Simply zip up to the adapter and tighten the cord locks to clamp it securely.
  • Bug Proof & Splash Resistant: Creates a tight seal to block mosquitoes and withstands light splashes.

Note: Curious how it works? Scroll down to watch the step-by-step video guide.

Manage the Condensate.

Cooling creates water. To avoid unexpected wet spots, install the drain tube before turning on the Mark 3.

Unit Outside

This is the simplest setup. Just let the drain tube hang vertically down the side of your vehicle or rack.

Tip: Ensure the tube end is not blocked or submerged in mud.

Unit Inside

You have two options to keep your floor dry:

  • Route It Out: Run the tube through the dedicated drain hole in the custom Tent Adapter.
  • Catch It: Simply place the tube into an open container inside your tent. 

Note: Back pressure or airlocks will cause pump failure. Please ensure no submerging, no kinks, and no sealed containers.

Power Your Cool.

The Mark 3 operates on a high-efficiency 48V system. Choose the power method that fits your journey.

Dedicated Battery

The most convenient option is the ZERO BREEZE Mark 3 Battery, which connects directly via its attached cable.

AC Power

Alternatively, plug into any wall outlet or portable power station using the included AC Adapter.

12V Battery Bank

If you plan to use a 12V battery bank, a specialized 12V to 48V Booster and compatible adapter cabling are strictly required.

Warning: Never connect the Mark 3 directly to a standard 12V port. Voltage mismatch will prevent operation.
Note: Need a detailed power guide? Read our full Power Supply Solutions Blog here.
Dedicated Battery AC Power 12V Battery Bank

Stay Charged.

Plan your power usage. The Mark 3 Battery is designed to last the night and recharge on the go.

Sleep Runtime (5-7 Hours)

On Sleep Mode, the battery provides enough cooling for a full night's rest. For extended trips, we recommend carrying a spare.

Charge While Driving

Don't waste the drive. Plug the battery into your car's 12V cigarette lighter to recharge while moving between campsites.

(Note: Requires the dedicated 12V Cigarette Lighter Cable.)

Solar Charging

Go off-grid. Connect solar panels directly to the battery to harvest energy during the day, even while the AC is running.

(Note: Requires the dedicated Solar Charging Cable.)
Sleep Runtime Charge While Driving Solar Charging

Mark 3 Runtime Calculator

See how long Mark 3 can run on your battery / power station / DC system.
One Mark 3 Battery = 1022 Wh capacity.
Power Source
AC Mode
Result
Estimates only. Real-world runtime varies with ambient temperature, compressor cycling, wiring losses and battery aging.

The Truth About RTT Cooling

Unlike a house, your roof top tent is built from thin fabric with limited insulation. Under direct sunlight, heat penetrates rapidly and creates a greenhouse effect.

The Mark 3 is designed to create a comfortable, dry sleeping climate, typically lowering the temperature by 15–25°F below ambient. For maximum cooling on hot days, we recommend adding an insulation liner or parking in the shade. This simple step blocks solar heat and locks the cold air inside where it belongs.

Pro Tip: Turn on the Mark 3 to pre-cool your sleeping area 15–20 minutes before bed.