Green Electric Green Electric Plus 18000 BTU
(2 reviews)
The most powerful fixed air conditioner in our selection, designed for large rooms up to 45-50 m², with heat pump and WiFi control.
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Key features
- Power: 5 kW (18,000 BTU/h)
- Type: Fixed mono-split (indoor + outdoor unit), inverter heat pump
- Noise level: Not precisely stated by the manufacturer
- The highest cooling power in our fixed air conditioner selection, for large rooms
In detail: Green Electric Plus, connected fixed air conditioner 18000 BTU for large rooms
Most mono-split fixed air conditioners sold to the general public are limited to 9,000 or 12,000 BTU, enough for a bedroom or a medium-sized living room, but often falling short for a large through room or a spacious studio. The Green Electric Plus 18000 BTU fills this segment, with 5 kW of cooling power covering up to 45-50 m² depending on the room's insulation and exposure, without needing to move to a more complex and costly multi-split installation.
The Green Electric brand, less well known to the general public than the sector's historic references, is built according to available information on the same technical, electrical and mechanical foundations as Gree, one of the world's largest air conditioner manufacturers, via the Argo group. This positioning allows an 18,000 BTU unit to be offered at a price noticeably lower than major brands on this same power segment.
The unit includes a reversible inverter heat pump, rated A++ for cooling and A+ for heating, along with R32 refrigerant. WiFi control via app rounds off the equipment, for remote adjustment of temperature and operating modes, though the manufacturer does not state a precise noise level figure, a point worth clarifying with the seller before buying for bedroom use.
Like any fixed split air conditioner, installation must be carried out by a certified professional to handle the refrigerant gas, a step generally costing more on this type of high-capacity unit than on a standard 9,000 BTU model, due to the size of the units and refrigerant line sections involved.
Technical data
Detailed characteristics
Performance
| Type?General technical category the unit belongs to (portable, split, evaporative...). | Fixed mono-split (indoor + outdoor unit), inverter heat pump |
|---|---|
| Cooling capacity?The unit's cooling power, expressed in kW or BTU/h (British Thermal Unit per hour). | 5 kW (18,000 BTU/h) |
| Energy class?European energy efficiency class (from A+++ to G), showing how the unit's consumption compares with similar models. | A++ (cooling) / A+ (heating) |
| Refrigerant?Gas used in the cooling circuit. R290 and R32 are now favoured for their lower environmental impact. | R32 |
| Recommended room size?Room size or volume the unit is designed for, according to the manufacturer. | Up to 45-50 m² depending on insulation and exposure |
Features and connectivity
| Functions?Operating modes offered by the unit (cooling, fan, dehumidifying, heating...). | Cooling, heating (reversible heat pump) |
|---|---|
| Connectivity?Ways to control the unit remotely (mobile app, WiFi, voice assistants...). | WiFi, app control |
Dimensions and power supply
| Power supply?Electrical voltage and frequency required to run the unit. | 220-240V~, 50Hz |
|---|
Additional information
| Manufacturer warranty?Period during which the manufacturer commits to repairing or replacing the unit in case of failure, excluding damage or misuse. | Manufacturer warranty, terms apply (check with seller) |
|---|
Comparison
On the rarer high-capacity fixed air conditioner segment, the Green Electric Plus 18000 BTU compares to the Hisense CA35YR01G, already featured in our selection at a lower power rating, in searches like "what air conditioner power for a large living room". Here is how the two compare, based on the public specifications of both manufacturers.
| Criterion | Green Electric Plus 18000 BTU | Hisense CA35YR01G |
|---|---|---|
| Cooling capacity | 5 kW (18,000 BTU/h) | 3.5 kW (12,000 BTU/h) |
| Recommended room size | Up to 45-50 m² | Not specified (standard use) |
| Brand recognition | Little known (Argo/Gree group) | Established mainstream brand |
| Price observed | ≈£801 | ≈£899 |
In short, the Green Electric Plus targets specifically large rooms where a 12,000 BTU unit would fall short, at a similar price despite much higher power. The Hisense CA35YR01G benefits from a more established brand reputation, but remains sized for standard room dimensions.
Our tester's verdict: Christophe Delpuech
This Green Electric Plus 18000 BTU fills a fairly clear gap in the mainstream fixed air conditioning market, which is heavily concentrated on 9,000 and 12,000 BTU units: beyond that, buyers usually have to turn to multi-split systems or less mainstream brands like this one. The few reviews available (7 to date) are fairly positive on the unit's real cooling capacity for a large room, but their small number does not yet allow for a solid, lasting conclusion. The Green Electric brand, built on the same technical foundations as Gree via the Argo group according to available information, remains noticeably less recognised than the sector's historic references (Daikin, Mitsubishi Electric, Panasonic), which partly explains its more accessible pricing at this power level. WiFi control and the reversible heat pump function match the standards expected of this type of unit. For a large room or a through living room where standard 9,000-12,000 BTU models would fall short on power, this model remains worth considering, bearing in mind the still-limited amount of user feedback available.
Frequently asked questions: Green Electric Plus, connected fixed air conditioner 18000 BTU for large rooms
The manufacturer lists it for rooms up to 45-50 m² depending on insulation and exposure, noticeably higher power than standard 9,000-12,000 BTU fixed air conditioners limited to bedrooms and small living rooms.
According to available information, the Green Electric brand is developed by the Argo group on the same technical, electrical and mechanical foundations as Gree, one of the world's largest air conditioner manufacturers, which explains a more accessible price than an equivalent mainstream brand.
Yes, thanks to its reversible inverter heat pump rated A+ for heating, alongside its A++ rating for cooling, making it a year-round appliance.
The manufacturer does not provide a detailed figure on this point at present. For bedroom use where quiet is a priority, it is recommended to ask the seller for this information rather than rely on an estimate.
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Page published on 31 July 2026