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Zero Breeze Mark 2 2300 BTU Portable Air Conditioner Review

Each year, millions of individuals across the United States eagerly prepare for the great outdoors through camping adventures, with many even owning private cabins or recreational vehicles (RVs). However, as the world grapples with the escalating impacts of climate change, one significant challenge emerges: the intensifying heatwaves that pose a threat to the comfort and safety of outdoor enthusiasts. Indoor Breathing has a solution to this heatwave problem.

The gradual rise in temperatures has become unbearable, with heatwaves becoming more frequent and severe. This trend has prompted individuals to confront the harsh realities of climate change, particularly those who own rustic cabins tucked away in remote areas or those who cherish the simplicity and serenity of camping without modern amenities.

For those who have been active on social media platforms over the past year, chances are they have encountered advertisements showcasing the innovative features of the Zero Breeze Mark II. This Zero Breeze Mark II portable air conditioner has garnered attention for its ability to provide instant cooling wherever you go.

So, what sets the Zero Breeze Mark II apart from conventional cooling devices? Here are some key features that make it a must-have companion for outdoor enthusiasts:

Portability: Unlike bulky window or central air conditioning units, the Zero Breeze Mark II is designed with portability in mind. Weighing just a few kilograms and equipped with a convenient carrying handle, it can easily be transported to campsites, picnics, beach outings, or any outdoor location where relief from the heat is needed.

Versatility: Whether you’re camping in a tent, relaxing in a cabin, or lounging in your backyard, the Zero Breeze Mark II adapts to various environments with ease. Its compact size allows for placement in confined spaces, while its adjustable settings cater to individual preferences for cooling intensity.

Battery-Powered Operation: One of the most impressive features of the Zero Breeze Mark II is its ability to operate on battery power. This makes the Zero Breeze Mark II ideal for remote camping trips or outdoor events where power sources may be scarce, ensuring uninterrupted cooling when you need it most.

Multiple Functions: In addition to cooling, the Zero Breeze Mark II offers versatile functionality, serving as a portable fan, air purifier, and even a Bluetooth speaker. This multifaceted design enhances the overall outdoor experience, providing comfort, convenience, and entertainment in one compact machine.

Energy Efficiency: The Zero Breeze Mark II is designed with energy efficiency in mind. Advanced technology ensures optimal performance while minimizing power consumption, allowing users to enjoy extended cooling without draining battery life unnecessarily.

As summer approaches and outdoor activities beckon, the Zero Breeze Mark II emerges as a practical solution for individuals seeking relief from the sweltering heat. Whether you’re embarking on a weekend camping trip, hosting a backyard barbecue, or simply enjoying a day at the beach, the innovative Zero Breeze Mark II portable air conditioner offers a refreshing escape from the oppressive temperatures, allowing you to stay cool, comfortable, and fully immersed in the joys of outdoor adventure.

The Zero Breeze Mark II  was developed as a cooling device that operates solely on battery power, that is lightweight yet capable of delivering effective cooling. After years of innovation and experimentation, the solution has finally emerged in the form of a compact and weightless device, revolutionizing the way we stay cool during travels and adventures.

Traditional portable air conditioners have often been criticized for their bulkiness and reliance on electrical outlets, limiting their practicality for outdoor use or situations where power sources are scarce. However, the latest advancements in cooling technology have yielded a game-changing solution: battery-powered portable air conditioners.

These innovative devices represent a significant leap forward in portable cooling technology, offering a range of benefits that address the shortcomings of their predecessors.

Zero Breeze Mark 2 2300 BTU Portable Air Conditioner Review


  • No worries about light rain or moisture accumulating overnight with IPX4 protection.
  • Four different modes of operation to help you deal with any issue that may arise.
  • A relatively quiet system for the amount of cooling it provides.
  • Ability to completely cool a room in 10 minutes.
  • The AC’s ergonomic design makes it easy to place it in the most convenient places for you.


  • The hot air emitted through exhaust exchange mixes with colder air from the unit, causing a less favorable impact over time.

Zero Breeze Mark II 2300 BTU Portable AC Design, Size & Portability

Crafted by designers Song Ming and Denni, this Zero Breeze Mark II portable AC unit boasts a sleek and efficient design, making it a stylish addition to any home or office space. Thanks to its ergonomic grip, the Mark II is effortlessly portable, while the strategically positioned controls ensure easy access and operation.

Despite its emphasis on simplicity with a single-button interface, the Mark II features distinct buttons for speed, mode, and power, cleverly arranged around the handle for intuitive use. Users have commended the design and size of the Zero Breeze Mark II, acknowledging its relatively lightweight construction compared to other portable systems, tipping the scales at a modest 17 pounds.

Measuring a compact 11 inches in height and 10 inches in width, with a length of 20 inches, the Zero Breeze Mark II offers a space-saving solution without compromising on performance. Additionally, its IPX4 protection ensures splash resistance, providing peace of mind even when used in less-than-ideal conditions.

However, despite its appealing design, some have raised concerns about the Mark II’s portability and style. With dimensions of 20 x 13 x 8 inches, it may not be as petite as expected for a portable air conditioner. Furthermore, the inclusion of a bulky battery and adapter adds to the overall weight, resulting in a package exceeding 23 pounds.

Despite these considerations, the Mark II’s performance is undeniable, with a powerful fan ensuring effective cooling, reminiscent of a supercar’s rear end. While opinions on its design may vary, promotional materials showcasing individuals effortlessly carrying the hefty AC suggest that its portability is indeed manageable.

How Does Zero Breeze Mark II Work?

The Zero Breeze Mark II operates as a compressor-based air conditioner, functioning similarly to wall-mounted AC units, mini-split systems, or central air conditioning systems.

Its operation revolves around the principle of heat transfer. Within the A/C unit, a specific cooling substance known as ‘refrigerant’ is contained within a sealed system. This refrigerant plays a crucial role in absorbing heat from the surrounding environment and then transporting it elsewhere.

Here’s how it works: The refrigerant absorbs heat from the room, causing it to transform into a gas. It then travels through the system to the compressor, where it undergoes a process of compression and heating. Subsequently, the heated refrigerant passes through the condenser coil, where it releases the absorbed heat. To facilitate further heat absorption, the refrigerant must cool down before transitioning back into a liquid state, ready to repeat the cycle.

Ultimately, this process effectively removes heat from the space while also dehumidifying the air, resulting in a cooler and more comfortable environment. This compressor-based cooling method stands out for its efficiency in effectively regulating temperatures.

Zero Breeze Mark 2 2300 BTU Portable AC Battery Life And Charging Times

For the Mark II, Zero Breeze estimates a 5-hour battery life. Based on verified user reviews, you can expect roughly 3 hours of battery life at full power.

Their figures should hold up even at the lowest settings for a portable device of this size. With a detachable 24-volt Lithium-Ion Polymer battery, the Zero Breeze Mark II provides double the power of its predecessor.

However, the battery must be connected by a short connection to fit into the AC unit. It is possible to purchase additional batteries for this battery-powered air conditioner, but the price may make you pause.

Although the Mark II’s three to five-hour battery life is one of its most significant selling points, all battery-powered devices eventually need to be recharged.

Apart from how the system can be charged, the firm doesn’t discuss much of this function in its literature. Because the Mark II can’t be charged while in use, the battery must be detached when the power runs low.

You’ll need an additional power adapter to recharge a battery while your Zero Breeze operates (through AC or another battery).

The converter you choose should be compatible with how you plan to recharge the battery: AC, 12V/Car, or DIY Adapter cord for 24V recharge sources. For continuous cooling, the machine can be powered by an AC adaptor.

However, most people will utilize the approved adaptor, which takes between 5 and 6 hours to fully charge their phone in the car.

Zero Breeze Mark 2 2300 BTU Portable AC Key Features

There’s a micro-compressor tucked away in the system’s core. In terms of size and weight, it’s about the size of a drink can. Yet, despite its compact size, it can lower the temperature by 30 degrees in 10 minutes while in power mode.

The Mark 2’s built-in dump protection mechanism will turn off the device in the event of a complex outdoor environment, preventing any damage to the system.

It also comes with an extension pipe that can be used to blow cold air towards you quickly. This is ideal for small spaces because the unit’s placement is not restricted.

The Zero Breeze mark II’s ducting is also unique. As a result of combining their dual-pipe cooling system with a variable frequency centrifugal fan, they can create up to 120 CFM.

They may expand up to 47 inches, yet they are just 11 inches long when compressed. If the cold air duct is fully inflated, it measures 31 inches, the same as the drain hose.

Additional features of this system include Sleep Mode, Power Mode, and USB Charging, among many others.

In the Sleep mode, the air conditioner runs quietly, so you may sleep with it on, while in the Power mode, the air conditioner cools quickly when it’s hot outside.

In addition, the battery has a remote control and 12V DC and USB charging connectors on the bottom.

Zero Breeze Mark 2 2300 BTU Portable AC Noise Level

The noise level of an air conditioner is one of the most important factors to consider.

Because you want to sleep peacefully while it’s on, it’s understandable. That’s not the case with Mark 2.

The noise level is 52dB, about the same as a fridge. Theoretically, that’s manageable.

On the other hand, the noise would be significantly louder if you were in a tent with the device set to the highest level.

There is a Sleep Mode on Mark 2, making the phone more peaceful at night and during sleeping.

Zero Breeze Mark 2 2300 BTU Portable AC Cooling Capacity

The cooling effect of an air conditioner is the essential function of this device. A portable or battery-powered device that cannot reduce the temperature will be of little use.

Fortunately, the Mark 2 has a working version of it. No water or ice is required to cool the air. Just remember that the Mark 2 isn’t a standard air conditioner that’s meant to cool your entire house.

It is possible to struggle to chill in a cabin with its 2,300 BTU rating, especially during hot summer days. Smaller and more tightly sealed spaces (20-40 sq. ft. It can lower the temperature by up to 30°F in just ten minutes).

If the insulation is good or if it’s nighttime, the Zero Breeze 2 can be an excellent cooling solution for a cabin in other circumstances.

Zero Breeze Mark 2 2300 BTU Portable AC Energy Efficiency Ratio (EER)

When it comes to electricity, the Mark 2 intelligent battery needs a lot of it.

240 Watts, to be precise. The 24V voltage makes the 240W possible; the maximum amperage of the Mark 2 is 10 amps.

Energy economy is the most crucial element when choosing the best portable air conditioner. Mark 2 has an EER rating of 9.6.

Even for portable air conditioners, that’s very high energy efficiency. For Zero Breeze and all battery-powered air conditioners, it’s a huge plus point.

Using battery-powered technologies, you may save much money on your electricity bill. All battery-operated AC systems have certain physical limits, and that’s just the way it is.

Large portable ACs with high EER ratings are Whynter ARC-14S (14,000 BTU) and LG LP1417GSR (14,000 BTU).

Zero Breeze Mark 2 2300 BTU Portable AC Maintenance and Usage

We are happy to report that the Zero Breeze does what it says on the box!

It’s as simple as pressing a few buttons to change a few parameters (mainly the fan speed), and the unit starts blowing chilly air.

It comes with a manual guide where it is explained how to use this device and maintain it. The device requires charging for at least five hours and needs to be cleaned now and then.

Frequently Asked Questions 

  • Does Zero Breeze Mark 2 work?

Yes, the Zero Breeze Mark 2 works. It works without the need for water or ice and can lower the temperature in minutes.

This combines to make the Zero Breeze Mark 2 a truly working portable air conditioner.

  • How long does the Zero Breeze Mark 2 battery last?

This battery has a theoretical life of 3.5 hours in vigorous working mode and 5-6 in sleeping mode when fully charged (according to user feedback).

  • How many watts is the Zero Breeze Mark 2?

The Mark 2 has a 650 Watts / 2,300 BTU cooling capacity, four fan speeds, and three cooling modes.

  • Does zero breeze Mark 2 use freon?

Yes. Zero Breeze Mark 2 AC uses R134A refrigerant.

  • How do you charge a zero breeze Mark 2 battery?

This battery can be recharged via the wall with the Zero Breeze AC Power Adapter, using the 12V/Car Adapter, or via the DIY Adapter, which connects a 24V source.


Prices pulled from the Amazon Product Advertising API on:

Final Thoughts

Zero Breeze Mark 2 2300 BTU Portable Air Conditioner Best Review

For outdoor enthusiasts, the Zero Breeze Mark II offers a the best solution from sweltering temperatures during camping trips or outdoor adventures. Its portability and battery-powered operation ensure that you can enjoy refreshing cool air wherever your explorations take you.

Similarly, the Zero Breeze Mark 2 provides an efficient solution for maintaining a comfortable environment. Its compact size and lightweight design make it easy to transport and set up, while its powerful cooling capabilities ensure rapid relief from heat and humidity.

In essence, the Zero Breeze Mark 2 emerges as a superior solution for portable cooling, offering a winning combination of functionality, affordability, and versatility. Whether you’re seeking relief from the heat while camping, traveling, or residing in compact spaces, this innovative device delivers on its promise of providing cooling comfort wherever you need it most.

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