ZERO BREEZE Mark 3. Innovation. Inside and Out.

Keep Cool Wherever You Go

Sleep cool without idling or an APU
Mark 3 keeps your bunk at 72°F all night with engine off and full compliance.

Off‑grid AC for compact trailers
A 1 kWh battery runs Sleep Mode for up to 6 hours. No hookups, no campground noise.

Portable cooling for rooftop tents
Just 22 lb and 46 dB in Sleep Mode keeps your tent at 73°F, even on 105°F desert nights.

Flexible Comfort at Anchor
Quiet, compact, and self-draining, Mark 3 runs on its detachable battery. No generator required.
5,280BTU
|22lb
|46dB

How Mark 3 Compares in the Real World
Mark 3 (Carry-Size Battery A/C) |
Big-Block Battery A/C 50-lb Class |
Traditional Portable A/C + Generator |
|
---|---|---|---|
Cooling Power | 5,280 BTU | ≈ 5,000 BTU | ≈ 5,000 BTU |
Main-Unit Weight | 22 lb / 10 kg | 33.7 lb / 15.3 kg 1.5× heavier | 58.2 lb / 26.3 kg 2.6× heavier |
Main-Unit Volume | 1,525 in³ (≈ 25 L) | 3,150 in³ (≈ 52 L) | 3,251 in³ (≈ 53 L) |
Power-Source Weight (≈ 1 kWh) | 14 lb / 6.4 kg | 21.4 lb / 9.7 kg | 28.7 lb / 13 kg |
Total to Lift Every Night | 36 lb / 16 kg | 55 lb / 25 kg | 86 lb / 39 kg |
Set-Up Time | Plug & cool in 60 s | Two-hand carry • manual drain | Unload gen • fuel • mount A/C |
Sleep Mode Noise | 46 dB | 55 dB+ | ≥ 65 dB |
Cabin Foot-Print | Like a 25 L travel duffel | Carry-on suitcase | Two bulky boxes + fuel can |
Price (unit + power) | $1,299 – 1,899 | $1,999+ | $700 – 1,000 |
*Weights & volumes from public specs. Generator combo = 1 kW inverter unit + 5k BTU portable A/C.
Thermostat Setting
We know everyone experiences heat differently so take advantage of the thermostat feature and let yourself forget that the temperature was ever an issue. Adjust the cooling, heating, and dehumidifying ranges freely according to your needs.

Innovation Made for Outdoor Cooling
"This is the most portable air conditioner we've ever seen, and is perfect for keeping the temperature down on camping trips and other outdoor adventures."
—T3, a leading technology media outlet

7 Modes Tailored for Your Outdoor Adventure
Whether you need rapid relief after a day in the sun or gentle airflow for a restful night, Mark 3 adapts to every outdoor moment. With versatile settings like Rocket, Cool, Sleep, Fan, Dry, Care, and Heating, it is built to handle heat, humidity, and changing conditions wherever your adventure takes you.

Reliable Power for Every Outdoor Moment
The Mark 3 battery supports a wide 12–60V DC input range and features a built-in 500W MPPT module for efficient solar charging. It reaches 80% charge in just 2 hours. With a 1022Wh capacity and built-in extendable cable, it also includes USB-C, USB-A, and Anderson outputs so you can charge your phones, laptops, and other mobile devices—anywhere you go.

Charging While Discharging
Connect multiple batteries to double, triple or even quadruple your battery life!

Upgraded Power Supply System
It's not just an air conditioner, it's a 48V cooling system.

By AC 500W Adapter
Power up your 1022Wh Mark 3 battery from 0% to 80% in just 2 hours. Compatible with RV and portable power station AC adapters.
By Mark 3 Batteries
Enjoy 7 hours of sleep mode comfort. 2 batteries in series with the built-in power cable ensure all-night running.
By 500W MPPT Solar
Mark 3 battery's built-in 500W MPPT module allows charging via 12-60V solar panels, reaching 80% charge in just 2 hours.
By 12V Vehicle
You can recharge your Mark 3 Battery on the go using the cigarette socket. (Car charging cable needs to be purchased separately.)
Don't Just Take Our Word
What Our Customers Say
As seen on

FAQs
For Mark 3 Basic (AC Only), the package includes the following:
- ZERO BREEZE Mark 3 Air Conditioner x 1
- 100V-240V AC Power Adapter for Wall Outlet x 1
- 2.4G Wireless Remote Controller x 1
- Drainage Pipe x 1
- Front Outlet Duct x 1
Φ4.33" (11 cm) - Front Inlet Duct / Rear Inlet Duct x 1
Φ5.12" (13 cm) - Rear Outlet Duct x 1
Φ5.91" (15 cm) - Front Inlet Adapter x 1
- Front Outlet Adapter x 1
- Rear Inlet Adapter x 1
- Rear Outlet Adapter x 1
- ZERO BREEZE Mark 3 User Manual x 1
Yes, it is included in the Mark 3 package.
The Mark 3 measures 22" x 10" x 12" and weighs 22 lbs. Its compact size and lightweight design make it easy to carry and store.
The Mark 3 delivers a cooling capacity of 5,280 BTU, specifically engineered for targeted cooling in outdoor and off-grid environments.
The power consumption of the Mark 3 varies depending on the operating mode:
- Rocket Mode: 350–500W
- Cool Mode: 200–350W
- Sleep Mode: 150–200W
- Fan Mode: 12–17W
- Dry Mode: 350–500W
- Care Mode: 150–350W
- Heating Mode: 200–500W
Yes, the Mark 3 has a heating mode. However, it is important to note that this function is designed as a supplementary feature, rather than a primary heating solution. Due to power limitations, the heating mode is only effective when the ambient temperature is above 50°F (10°C).
We recommend first using your primary heating system to raise the room temperature to your desired level, and then using the Mark 3's heating mode to help maintain that temperature.
As with most air conditioners, during cooling operations, the front of the unit releases cold air while the rear expels warm air.
The Mark 3 is designed for personal and small-area cooling (100–150 sq. ft.). Unlike traditional air conditioners that cool entire rooms, it focuses on spot cooling or flexible use in compact spaces—ideal for outdoor or portable setups.
The "Care Mode" uses a PI (Proportional-Integral) algorithm to quickly adjust the compressor speed, helping the outlet air temperature match your desired setting faster. In short, it provides rapid, targeted comfort by focusing on quickly reaching your preferred temperature.
Yes. The Mark 3 includes a 100V–240V AC adapter. When connected to a wall outlet, it can run continuously without a battery.
When plugged into a standard AC wall outlet (100V–240V), the Mark 3 can operate continuously, as long as it is properly maintained and in good working condition.
If running on Mark 3 battery power, the runtime depends on the selected mode and the number of batteries connected. Here's a breakdown of the expected working time:
- Rocket Mode (350–500W):
- With one battery (1022Wh): 2–3 hours
- With two batteries (2044Wh): 4–6 hours
- Cool Mode (200–350W):
- With one battery (1022Wh): 3–5 hours
- With two batteries (2044Wh): 6–10 hours
- Sleep Mode (150–200W):
- With one battery (1022Wh): 5–7 hours
- With two batteries (2044Wh): 10–14 hours
- Fan Mode (12–17W):
- With one battery (1022Wh): 60–85 hours
- With two batteries (2044Wh): 120–170 hours
- Dry Mode (350–500W):
- With one battery (1022Wh): 2–3 hours
- With two batteries (2044Wh): 4–6 hours
- Care Mode (150–350W):
- With one battery (1022Wh): 3–7 hours
- With two batteries (2044Wh): 6–14 hours
- Heating Mode (200–500W):
- With one battery (1022Wh): 2–5 hours
- With two batteries (2044Wh): 4–10 hours
Yes! The Mark 3 app (currently in beta) is available for both iOS and Android:
- iOS: Download from the Apple App Store.
- Android: Click on the link to download via Google Drive: https://drive.google.com/file/d/1UPrSLkOEGyyw-pNXhRpLVOrXU17J_kJ7/view?usp=sharing
Whether or not ducts are necessary depends on your environment and setup:
- In open spaces: Ducts are not required, and you can use the Mark 3 to cool the area effectively without them.
- In enclosed spaces (such as tents, vans, or boats): We recommend installing the rear dual ducts to enhance cooling efficiency and improve ventilation.
For targeted cooling, you can also install the front air outlet duct in either case to direct airflow more precisely to the desired area.
The battery runtime of the Mark 3 depends on the selected operating mode and how many batteries are connected. Here are the approximate runtimes:
- Rocket Mode (350–500W)
- One battery: 2–3 hours
- Two batteries: 4–6 hours
- Cool Mode (200–350W)
- One battery: 3–5 hours
- Two batteries: 6–10 hours
- Sleep Mode (150–200W)
- One battery: 5–7 hours
- Two batteries: 10–14 hours
- Fan Mode (12–17W)
- One battery: 60–85 hours
- Two batteries: 120–170 hours
- Dry Mode (350–500W)
- One battery: 2–3 hours
- Two batteries: 4–6 hours
- Care Mode (150–350W)
- One battery: 3–7 hours
- Two batteries: 6–14 hours
- Heat Mode (200–500W)
- One battery: 2–5 hours
- Two batteries: 4–10 hours
You can recharge the Mark 3 battery through several methods:
- Using the included 500W AC adapter (charges to 80% in about 2 hours).
- Using another Mark 3 battery (via the built-in charging cable).
- Using solar panels (12–60V input; solar charging cable sold separately).
- Using a 12V car cigarette lighter (cable sold separately).
The charging speed depends on the power output of your charging source.
With the standard 500W AC adapter, the battery charges to approximately 80% in about 2 hours.
Yes. You can connect the Mark 3 AC unit to the battery using the built-in cable, and then plug the battery into a power source.
This setup allows you to recharge the battery while simultaneously powering the air conditioner.
No. The Mark 3 can also run on third-party power supplies.It requires up to 500W of power and can operate from:
- 110–240V AC,
- 48V DC,
- 12–36V DC (when using a 48V booster).
No. When using multiple batteries chained together, the next battery will automatically take over when the first one is depleted. Therefore, you can sleep soundly without needing to swap batteries manually.
The Mark 3 battery is designed for over 1,000 full charge/discharge cycles at normal temperatures. After 1,000 cycles, it typically retains around 87% of its original capacity.
The Mark 3 is covered by a warranty as outlined in the ZERO BREEZE warranty policy. For full details, please refer to the policy here: Warranty Policy.