ZERO BREEZE Mark 2 Review | 44 Data compared

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  • Avg. price in UK: ~£900
  • Avg. price in US: ~$900
  • Cooling capacity: 2,300 BTU/h
  • Maximum room size: 4
  • Maximum noise level: 52 dB
  • Heating function: no
  • Cooling Energy Efficiency Class: ?

ZERO BREEZE Mark 2 review. Compare 44 technical specifications and user reviews to see how this product ranks in the Portable Air Conditioners category and whether it is worth buying.

5.8

Overall score

What it is: An overall evaluation of products in the Portable Air Conditioners category, based on technical analysis and user reviews.

When it matters: When you need a quick reference for identifying the best products in the Portable Air Conditioners category.

Score components:

80.0%

5.6

Technical Score

20.0%

6.6

User score

Good
5.6

Technical Score

What it is: An assessment of technical performance for products in the Portable Air Conditioners category across these key areas: Performance, Features, Design.

When it matters: When you want to compare products in the Portable Air Conditioners category by technical performance, specifications, and available features.

Score components:

55.0%

4.8

Performance

30.0%

6.4

Features

15.0%

7.2

Design

Good
6.6

User score

What it is: A rating that combines user reviews with the total review volume for products in the Portable Air Conditioners category.

When it matters: When you want to know how products in the Portable Air Conditioners category perform in everyday use and how reliable owners find them over time.

Score components:

70.0%

6.5

User reviews

30.0%

6.9

Popularity

User score:
United Kingdom
amazon
2.6
(9)
amazon
2.2
(3)
United States
Amazon_logo.png
3.4
(70)
Amazon_logo.png
2.6
(14)
Amazon_logo.png
2.2
(3)

(Reviews last updated: August 2026)

Good
  • 8.8
    Bedroom use

    Score components:

    35.0%

    10

    Maximum noise level

    25.0%

    10

    Night mode

    20.0%

    4.0

    Timer

    20.0%

    10

    Remote control

  • 1.6
    Large rooms

    Score components:

    40.0%

    1.0

    Cooling capacity

    30.0%

    1.0

    Maximum room size

    20.0%

    1.0

    Airflow (high speed)

    10.0%

    7.0

    Airflow direction control

  • 6.0
    Year-round use

    Score components:

    40.0%

    4.0

    Heating function

    30.0%

    ?

    Dehumidification capacity

    20.0%

    ?

    Cooling energy efficiency class

    10.0%

    4.0

    Automatic fan speed

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Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The ZERO BREEZE Mark 2 is a compact, battery-powered portable air conditioner designed for off-grid environments like camping tents, RVs, and vans. It features a micro twin-cylinder inverter compressor that delivers 2,300 BTUs of cooling capacity while consuming a low 240 watts of power. Key advantages include its lightweight 16.5-pound frame, an integrated dual-hose exhaust system, and a detachable 24V lithium-ion battery that provides 3 to 5 hours of portable operation. However, notable drawbacks include its high retail price, its limitation to spot cooling spaces under 40 square feet rather than cooling entire vehicles, and the inability to simultaneously run the AC unit and charge the battery from the same single power adapter.

Technical Specifications of portable air conditioner ZERO BREEZE Mark 2

Technical Score

What it is: An assessment of technical performance for products in the Portable Air Conditioners category across these key areas: Performance, Features, Design.

When it matters: When you want to compare products in the Portable Air Conditioners category by technical performance, specifications, and available features.

Score components:

55.0%

4.8

Performance

30.0%

6.4

Features

15.0%

7.2

Design

5.6
ZERO BREEZE Mark 2 has a technical score of 5.65 points, which is lower than 86.8% of products in this category.
User score

What it is: A rating that combines user reviews with the total review volume for products in the Portable Air Conditioners category.

When it matters: When you want to know how products in the Portable Air Conditioners category perform in everyday use and how reliable owners find them over time.

Score components:

70.0%

6.5

User reviews

30.0%

6.9

Popularity

User score:
United Kingdom
amazon
2.6
(9)
amazon
2.2
(3)
United States
Amazon_logo.png
3.4
(70)
Amazon_logo.png
2.6
(14)
Amazon_logo.png
2.2
(3)

(Reviews last updated: August 2026)

6.6
ZERO BREEZE Mark 2 has a user score of 6.59 points, which is lower than 92.6% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by products in the Portable Air Conditioners category.
When it matters: When you prefer products in the Portable Air Conditioners category that have been chosen and reviewed by many other buyers.
6.9
ZERO BREEZE Mark 2 has a popularity of 6.9 points, which is higher than 57.9% of products in this category.
Ratio quality/price

What it is: An indicator that combines the overall score of products in the Portable Air Conditioners category with their prices.

When it matters: When you are comparing products in the Portable Air Conditioners category and want a good balance between quality and price.

Score components:

60.0%

5.8

Overall score

40.0%

2.0

Price

4.7
ZERO BREEZE Mark 2 has a quality-to-price ratio of 4.7 points, which is lower than 100% of products in this category.
Cooling capacity
What it is: Cooling capacity is the amount of heat the air conditioner can remove per hour, measured in BTU/h.
When it matters: Higher capacity cools larger or warmer rooms more effectively, provided the unit is sized correctly.

Importance: HIGH

Good value: At least 12,000 BTU/h

2,300 BTU/h
ZERO BREEZE Mark 2 delivers 2300 BTU/h cooling capacity, which is lower than that of 100% of portable air conditioners.
Rated input power
What it is: Rated input power is the electrical power the unit draws at its specified operating point, measured in watts.
When it matters: Lower rated input power reduces electrical demand, though cooling efficiency also depends on delivered capacity.

Importance: HIGH

Good value: Up to 1,200 W

240 W
ZERO BREEZE Mark 2 draws 240 W, which is lower than the power draw of 96.4% of portable air conditioners.
Cooling-mode power draw.
Cooling Energy Efficiency Class
What it is: Cooling energy efficiency class summarizes the efficiency of the unit while cooling, from higher to lower letter grades.
When it matters: A higher cooling efficiency class indicates more cooling output for the electricity consumed.

Importance: HIGH

Good value: A or better

?
Heating energy efficiency class
What it is: Heating energy efficiency class summarizes energy efficiency when the unit operates in heating mode.
When it matters: A higher heating efficiency class matters when the portable air conditioner will also provide regular space heating.

Importance: LOW

Good value: A or better

?
Number of speeds
What it is: The number of selectable fan speeds determines how finely airflow and noise can be adjusted.
When it matters: More speed settings make it easier to balance cooling intensity, sound, and comfort.

Importance: MEDIUM

Good value: At least 3 speeds

4
ZERO BREEZE Mark 2 offers 4 fan speeds, which is more than 98.4% of portable air conditioners and equal to 1.1% of portable air conditioners.
Manual discrete fan-speed levels counted; automatic and continuous modes were excluded.
Show more
Fan-only mode
What it is: Fan-only mode circulates room air without running the refrigeration cycle.
When it matters: This mode provides lower-power airflow when cooling is unnecessary.

Importance: MEDIUM

Good value: yes

yes
ZERO BREEZE Mark 2 includes a fan-only mode. 99.5% of portable air conditioners support this mode.
Airflow direction control
What it is: Airflow direction control describes whether outlet air can be aimed automatically, manually, or not at all.
When it matters: Better directional control spreads conditioned air more evenly without repositioning the unit.

Importance: MEDIUM

Good value: automatic

manual
ZERO BREEZE Mark 2 provides manual airflow direction control, which ranks lower than 53.2% of portable air conditioners and equal to 19.4% of portable air conditioners.
Night mode
What it is: Night mode adjusts operation for sleeping hours, typically reducing sound, light, or abrupt temperature changes.
When it matters: Night mode is useful when the unit runs in a bedroom or other light- and noise-sensitive space.

Importance: MEDIUM

Good value: yes

yes
ZERO BREEZE Mark 2 includes a dedicated night mode. 74.3% of portable air conditioners offer night mode.
Timer
What it is: A timer lets the unit start, stop, or change operation after a scheduled interval.
When it matters: Timer control helps cool a room before use and avoids running the unit longer than necessary.

Importance: MEDIUM

Good value: yes

no
ZERO BREEZE Mark 2 does not include a built-in timer. 99.5% of portable air conditioners feature a timer.
Maximum timer duration
What it is: Maximum timer duration is the longest interval that can be scheduled before automatic operation changes.
When it matters: A longer timer window offers more flexibility for overnight use and advance scheduling.

Importance: MEDIUM

Good value: At least 24 hours

?
Show more
Color
What it is: Color describes the main exterior finish of the portable air conditioner.
When it matters: Finish color matters when the unit will remain visible and should suit the room decor.

Importance: LOW

grey
Display
What it is: A display shows settings such as target temperature, operating mode, or timer status on the unit.
When it matters: A display makes current settings easier to check without opening an app or using the remote.

Importance: LOW

Good value: yes

yes
ZERO BREEZE Mark 2 includes an integrated display. 99.5% of portable air conditioners feature a display.
Control type
What it is: Control type identifies whether settings are entered through touch controls, physical buttons, or both.
When it matters: The interface style affects tactile feedback, cleaning, accessibility, and ease of use.

Importance: LOW

physical
Remote control
What it is: A remote control operates core functions from across the room without touching the unit.
When it matters: Remote access is convenient when the air conditioner is beside a window, across the room, or used from bed.

Importance: LOW

Good value: yes

yes
ZERO BREEZE Mark 2 comes with a remote control. 99% of portable air conditioners include a remote.
Handles
What it is: Integrated handles provide secure grip points for moving or repositioning the unit.
When it matters: Handles reduce awkward lifting when the air conditioner is moved between rooms or stored.

Importance: LOW

Good value: yes

yes
ZERO BREEZE Mark 2 includes built-in handles for easier carrying. 99.5% of portable air conditioners feature handles.
Show more

ZERO BREEZE Mark 2 vs the average portable air conditioner

  • Uses an inverter compressor
    ZERO BREEZE Mark 2 uses an inverter compressor, the average portable air conditioner does not.
    What it is: An inverter compressor can vary its operating speed instead of relying only on full-power on and off cycles.
    When it matters: Variable compressor output can improve temperature stability, efficiency, and part-load noise.

    Importance: HIGH

    Good value: yes

    ZERO BREEZE Mark 2 uses an inverter compressor, the average portable air conditioner does not.
  • 760 W lower rated power draw
    ZERO BREEZE Mark 2 draws less power than the average portable air conditioner (240 W vs 1000 W).
    Cooling-mode power draw.
    What it is: Rated input power is the electrical power the unit draws at its specified operating point, measured in watts.
    When it matters: Lower rated input power reduces electrical demand, though cooling efficiency also depends on delivered capacity.

    Importance: HIGH

    Good value: Up to 1,200 W

    ZERO BREEZE Mark 2 draws less power than the average portable air conditioner (240 W vs 1000 W).240 W vs 1000 W
  • 12 dB quieter at maximum output
    ZERO BREEZE Mark 2 is quieter at maximum output than the average portable air conditioner (52 dB vs 64 dB).
    Highest stated operating noise.
    What it is: Maximum noise level is the loudest stated sound output, usually produced at full cooling or fan speed.
    When it matters: Lower maximum noise makes intensive cooling less disruptive during work, conversation, or sleep.

    Importance: MEDIUM

    Good value: Up to 60 dB

    ZERO BREEZE Mark 2 is quieter at maximum output than the average portable air conditioner (52 dB vs 64 dB).52 dB vs 64 dB
  • 11 dB quieter minimum operation
    ZERO BREEZE Mark 2 is quieter at minimum output than the average portable air conditioner (40 dB vs 51 dB).
    Lowest stated operating noise.
    What it is: Minimum noise level is the quietest stated sound output, normally reached at a reduced fan setting.
    When it matters: Lower minimum noise is valuable in bedrooms, home offices, and other quiet spaces.

    Importance: MEDIUM

    Good value: Up to 50 dB

    ZERO BREEZE Mark 2 is quieter at minimum output than the average portable air conditioner (40 dB vs 51 dB).40 dB vs 51 dB
  • 70.6% lower weight
    ZERO BREEZE Mark 2 is lighter than the average portable air conditioner (7.5 kg vs 25.5 kg).
    What it is: Weight is the mass of the portable air conditioner before installation accessories are attached.
    When it matters: A lighter unit is easier to carry, reposition, and move between floors.

    Importance: MEDIUM

    Good value: Up to 25 kg

    ZERO BREEZE Mark 2 is lighter than the average portable air conditioner (7.5 kg vs 25.5 kg).7.5 kg vs 25.5 kg
  • 1 more fan speeds
    ZERO BREEZE Mark 2 offers more fan speeds than the average portable air conditioner (4 vs 3).
    Manual discrete fan-speed levels counted; automatic and continuous modes were excluded.
    What it is: The number of selectable fan speeds determines how finely airflow and noise can be adjusted.
    When it matters: More speed settings make it easier to balance cooling intensity, sound, and comfort.

    Importance: MEDIUM

    Good value: At least 3 speeds

    ZERO BREEZE Mark 2 offers more fan speeds than the average portable air conditioner (4 vs 3).4 vs 3
  • 12 cm narrower cabinet
    ZERO BREEZE Mark 2 is narrower than the average portable air conditioner (26 cm vs 38 cm).
    What it is: Width is the side-to-side cabinet dimension of the portable air conditioner.
    When it matters: A narrower unit occupies less wall and floor space beside a window.

    Importance: LOW

    Good value: Up to 35 cm

    ZERO BREEZE Mark 2 is narrower than the average portable air conditioner (26 cm vs 38 cm).26 cm vs 38 cm
  • 43 cm shorter cabinet
    ZERO BREEZE Mark 2 is shorter than the average portable air conditioner (28 cm vs 71 cm).
    What it is: Height is the vertical dimension of the portable air conditioner.
    When it matters: A shorter cabinet fits more easily below windows, shelves, and other height restrictions.

    Importance: LOW

    Good value: Up to 70 cm

    ZERO BREEZE Mark 2 is shorter than the average portable air conditioner (28 cm vs 71 cm).28 cm vs 71 cm
  • Uses an inverter compressor
    ZERO BREEZE Mark 2 uses an inverter compressor, the average portable air conditioner does not.
  • 760 W lower rated power draw
    ZERO BREEZE Mark 2 draws less power than the average portable air conditioner (240 W vs 1000 W).
  • 12 dB quieter at maximum output
    ZERO BREEZE Mark 2 is quieter at maximum output than the average portable air conditioner (52 dB vs 64 dB).
  • 11 dB quieter minimum operation
    ZERO BREEZE Mark 2 is quieter at minimum output than the average portable air conditioner (40 dB vs 51 dB).
  • 1 more fan speeds
    ZERO BREEZE Mark 2 offers more fan speeds than the average portable air conditioner (4 vs 3).
  • 70.6% lower weight
    ZERO BREEZE Mark 2 is lighter than the average portable air conditioner (7.5 kg vs 25.5 kg).
  • 12 cm narrower cabinet
    ZERO BREEZE Mark 2 is narrower than the average portable air conditioner (26 cm vs 38 cm).
  • 43 cm shorter cabinet
    ZERO BREEZE Mark 2 is shorter than the average portable air conditioner (28 cm vs 71 cm).
  • 6700 BTU/h lower cooling capacity
    ZERO BREEZE Mark 2 delivers lower cooling capacity than the average portable air conditioner (2300 BTU/h vs 9000 BTU/h).
  • 26 m² smaller room coverage
    ZERO BREEZE Mark 2 covers a smaller room area than the average portable air conditioner (4 m² vs 30 m²).
    Maximum recommended cooling area in m².
  • 90 m³/h lower high-speed airflow
    ZERO BREEZE Mark 2 delivers lower high-speed airflow than the average portable air conditioner (260 m³/h vs 350 m³/h).
  • No automatic fan-speed control
    ZERO BREEZE Mark 2 does not adjust fan speed automatically, while the average portable air conditioner does.
  • More limited airflow control
    ZERO BREEZE Mark 2 provides manual airflow direction control, while the average portable air conditioner offers automatic.
  • No timer
    ZERO BREEZE Mark 2 does not include a timer, while the average portable air conditioner does.
  • No installation kit
    ZERO BREEZE Mark 2 does not include a window installation kit, while the average portable air conditioner does.
    Window/installation kit is absent or sold separately.
  • 0.3 m shorter exhaust hose
    ZERO BREEZE Mark 2 has a shorter exhaust hose than the average portable air conditioner (1.2 m vs 1.5 m).
  • No wheels
    ZERO BREEZE Mark 2 does not include wheels, while the average portable air conditioner does.
  • 15.5 cm deeper cabinet
    ZERO BREEZE Mark 2 is deeper than the average portable air conditioner (51 cm vs 35.5 cm).
  • 63.8% larger external volume
    ZERO BREEZE Mark 2 has a larger external volume than the average portable air conditioner (37128 cm³ vs 102623.407656 cm³).
  • 6700 BTU/h lower cooling capacity
    ZERO BREEZE Mark 2 delivers lower cooling capacity than the average portable air conditioner (2300 BTU/h vs 9000 BTU/h).
    What it is: Cooling capacity is the amount of heat the air conditioner can remove per hour, measured in BTU/h.
    When it matters: Higher capacity cools larger or warmer rooms more effectively, provided the unit is sized correctly.

    Importance: HIGH

    Good value: At least 12,000 BTU/h

    ZERO BREEZE Mark 2 delivers lower cooling capacity than the average portable air conditioner (2300 BTU/h vs 9000 BTU/h).2300 BTU/h vs 9000 BTU/h
  • 26 m² smaller room coverage
    ZERO BREEZE Mark 2 covers a smaller room area than the average portable air conditioner (4 m² vs 30 m²).
    Maximum recommended cooling area in m².
    What it is: Maximum room size is the largest floor area the manufacturer recommends the unit should cool.
    When it matters: A larger rated area is important when cooling open-plan spaces or larger rooms.

    Importance: HIGH

    Good value: At least 30 m²

    ZERO BREEZE Mark 2 covers a smaller room area than the average portable air conditioner (4 m² vs 30 m²).4 m² vs 30 m²
  • 90 m³/h lower high-speed airflow
    ZERO BREEZE Mark 2 delivers lower high-speed airflow than the average portable air conditioner (260 m³/h vs 350 m³/h).
    What it is: High-speed airflow is the maximum volume of air the fan can move per hour.
    When it matters: Higher maximum airflow circulates cooled air through the room more quickly.

    Importance: HIGH

    Good value: At least 350 m³/h

    ZERO BREEZE Mark 2 delivers lower high-speed airflow than the average portable air conditioner (260 m³/h vs 350 m³/h).260 m³/h vs 350 m³/h
  • No automatic fan-speed control
    ZERO BREEZE Mark 2 does not adjust fan speed automatically, while the average portable air conditioner does.
    What it is: Automatic fan speed lets the unit adjust airflow without manual speed changes.
    When it matters: Automatic adjustment improves convenience and can maintain a steadier room temperature.

    Importance: LOW

    Good value: yes

    ZERO BREEZE Mark 2 does not adjust fan speed automatically, while the average portable air conditioner does.
  • More limited airflow control
    ZERO BREEZE Mark 2 provides manual airflow direction control, while the average portable air conditioner offers automatic.
    What it is: Airflow direction control describes whether outlet air can be aimed automatically, manually, or not at all.
    When it matters: Better directional control spreads conditioned air more evenly without repositioning the unit.

    Importance: MEDIUM

    Good value: automatic

    ZERO BREEZE Mark 2 provides manual airflow direction control, while the average portable air conditioner offers automatic.manual vs automatic
  • No installation kit
    ZERO BREEZE Mark 2 does not include a window installation kit, while the average portable air conditioner does.
    Window/installation kit is absent or sold separately.
    What it is: An installation kit supplies the window fittings and adapters needed to route hot exhaust air outdoors.
    When it matters: An included kit reduces extra purchases and makes the first installation faster.

    Importance: MEDIUM

    Good value: yes

    ZERO BREEZE Mark 2 does not include a window installation kit, while the average portable air conditioner does.
  • No timer
    ZERO BREEZE Mark 2 does not include a timer, while the average portable air conditioner does.
    What it is: A timer lets the unit start, stop, or change operation after a scheduled interval.
    When it matters: Timer control helps cool a room before use and avoids running the unit longer than necessary.

    Importance: MEDIUM

    Good value: yes

    ZERO BREEZE Mark 2 does not include a timer, while the average portable air conditioner does.
  • 0.3 m shorter exhaust hose
    ZERO BREEZE Mark 2 has a shorter exhaust hose than the average portable air conditioner (1.2 m vs 1.5 m).
    What it is: Exhaust hose length is the maximum usable distance between the unit and its window vent connection.
    When it matters: A longer hose provides more placement flexibility when the window is not directly beside the unit.

    Importance: LOW

    Good value: At least 1.5 m

    ZERO BREEZE Mark 2 has a shorter exhaust hose than the average portable air conditioner (1.2 m vs 1.5 m).1.2 m vs 1.5 m

Graphic comparison of ZERO BREEZE Mark 2 and other products in the Portable Air Conditioners category

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Third-party reviews

(Reviews last updated: August 2026)

What customers like about ZERO BREEZE Mark 2?

  • Extremely portable and lightweight (approx. 30 lbs with battery)
  • Effective cooling for small spaces like tents and campers
  • Fast cooling performance, lowering temperatures quickly
  • Low power consumption (200W-240W) compared to other brands
  • Versatile power options including dedicated battery, wall outlet, and solar
  • Simple setup and user-friendly design

What customers dislike about ZERO BREEZE Mark 2?

  • High cost
  • Short battery runtime (approx. 3-5 hours)
  • Battery and unit cannot be charged simultaneously without additional, separate purchase of a power extension dock
  • Proprietary battery connector rather than a more standard industry connection
  • Limited to very small, enclosed spaces for maximum effectiveness

Expert reviews

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Video reviews

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