The Mark 3 is ZERO BREEZE's latest portable air conditioner, boasting a cooling capacity of 5,280 BTU. Weighing just under 22 pounds, it features a multi-function climate control system that allows you to set and maintain temperatures between 61°F and 88°F, suitable for spaces ranging from 100 to 150 square feet. Whether camping or living on the move in a van, trailer, or tiny house, the Mark 3 offers unmatched convenience for all your climate control needs.
The Mark 3 is ZERO BREEZE's latest portable air conditioner, boasting a cooling capacity of 5,280 BTU. Weighing just under 22 pounds, it features a multi-function climate control system that allows you to set and maintain temperatures between 61°F and 88°F, suitable for spaces ranging from 100 to 150 square feet. Whether camping or living on the move in a van, trailer, or tiny house, the Mark 3 offers unmatched convenience for all your climate control needs.
ZERO BREEZE Mark 3. Innovation. Inside and Out.
Keep Cool Wherever You Go
Sleep cool without idling
Mark 3 keeps bunk at 72°F all night
Off‑grid AC for trailers
1 kWh battery runs Sleep Mode up to 6 hours
Portable cooling for RTT
22 lb, 46 dB keeps tent at 73°F
Flexible comfort at anchor
Quiet, compact, self-draining
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
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.
Ducts Installation
No matter if you're in a car or a room with windows, ZERO BREEZE offers purpose-built kits to fit your setup. Get efficient cooling without the hassle.
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!
*Actual runtime varies based on cooling mode, ambient temperature, and humidity.
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.
By Mark 3 Batteries
Enjoy 7 hours of sleep mode comfort.
By 500W MPPT Solar
Built-in 500W MPPT module allows charging via 12-60V solar panels.
By 12V Vehicle
Recharge using the cigarette socket. (Cable sold separately.)
Don't Just Take Our Word
What Our Customers Say
As seen on
