Portable 12000 BTU inverter air conditioning built to cool, dehumidify, and ventilate larger site offices, meeting rooms, and welfare cabins up to 46 m².
-
Inverter technology reduces energy use compared to standard units
-
R290 natural refrigerant, A+ energy rated
-
3-in-1 cooling dehumidifying and fan functions
-
Three automatic modes, auto, silent, and sleep
-
Integrated exhaust hose stores neatly inside the unit
-
Covers rooms up to 46 m² (115 m³)
-
Fitted with a European plug, supplied with a Europe-to-UK adapter
Bosch 12000 BTU Portable Air Conditioner - 3-in-1 Inverter Technology
Portable 12000 BTU inverter air conditioning built to cool, dehumidify, and ventilate larger site offices, meeting rooms, and welfare cabins up to 46 m².
-
Inverter technology reduces energy use compared to standard units
-
R290 natural refrigerant, A+ energy rated
-
3-in-1 cooling dehumidifying and fan functions
-
Three automatic modes, auto, silent, and sleep
-
Integrated exhaust hose stores neatly inside the unit
-
Covers rooms up to 46 m² (115 m³)
-
Fitted with a European plug, supplied with a Europe-to-UK adapter
Order 1x to earn 895 FASTPoints
Order to earn 895 FASTPoints
Log in to access trade discountsBosch 12000 BTU Portable Air Conditioner - 3-in-1 Inverter Technology
Portable air conditioning built for larger site offices, meeting rooms, and welfare cabins that need reliable cooling without a fixed installation. The Bosch 12000 BTU Portable Air Conditioner combines cooling, dehumidifying, and fan functions in a single wheeled unit, using inverter technology to modulate compressor speed rather than running on full power or not at all. It runs on R290 natural refrigerant with an A+ energy efficiency rating and covers rooms up to 46 m² (115 m³), suiting larger single-room spaces than a standard portable unit.
How inverter technology cuts running costs on longer site deployments
A standard portable air conditioner runs its compressor at full power or switches off entirely, wasting energy overshooting the target temperature and creating constant on-off cycling that shortens compressor life. Left running across a full working day or a multi-week site deployment, that inefficiency adds up in both electricity cost and noise. Inverter technology modulates compressor speed continuously to match the room's actual cooling demand, holding a steady temperature with less energy and less noise than a standard on-off unit.
 |
 |
 |
Key Features
- Inverter technology: Continuously modulates compressor speed to match cooling demand, reducing energy consumption and noise compared to standard on-off compressors.
- R290 natural refrigerant: A low global warming potential refrigerant that supports environmentally conscious procurement without compromising cooling performance.
- A+ energy efficiency rating: Delivers 3.4 kW of cooling capacity at an EER of 3.1, keeping running costs down over extended site use.
- Integrated exhaust hose: Stores inside the unit and extends from 300 mm to 1,500 mm as needed, avoiding a loose hose to store or lose between deployments.
- Three automatic modes: Auto mode adjusts cooling output to the set and ambient temperature, silent mode reduces noise for occupied offices, and sleep mode gradually raises the set temperature overnight for uninterrupted comfort.
- Auto swing function: The louvre swings automatically to distribute cooled air evenly across the room rather than in one fixed direction.
- Magnetic remote storage: The remote control clips securely to the back of the unit via an integrated magnet, reducing the chance of it going missing between site moves.
Who is this for
Trades and roles:
- Site managers
- Site administrators
- Facilities managers
- Meeting and induction room coordinators
Industries:
- Construction
- Civil engineering
- Temporary site accommodation
- Facilities management
| Specification | Detail |
| Product Name | Bosch 12000 BTU Portable Air Conditioner - 3-in-1 Inverter Technology |
| SKU | EL070004 |
| Brand | Bosch |
| Product Type | Portable Air Conditioner |
| Function | Cooling, Dehumidifying, and Fan (3-in-1) |
| Cooling Capacity | 12,000 BTU/h (3.4 kW) |
| Room Coverage | Up to 46 m² (115 m³) |
| Minimum Room Size | Over 12 m² |
| Energy Efficiency Class | A+ |
| EER Rating | 3.1 |
| Energy Consumption | 1.1 kWh per 60 minutes |
| Inverter Technology | Yes |
| Hose Storage | Integrated; extends from 300 mm to 1,500 mm |
| Fan Speeds | 3 |
| Operating Modes | Auto, Silent, Sleep |
| Auto Restart | Yes; resumes previous settings after power loss |
| Operating Ambient Temperature | 16°C to 35°C |
| Minimum Clearance | 60 cm from walls and obstacles |
| Refrigerant | R290 (natural, low GWP, A3 flammability class) |
| Max Sound Power Level | 64 dB(A) |
| Sound Pressure Level | 43 to 50 dB(A) |
| Control Type | Touch display and remote control |
| Power Supply | 220–240V / 1Ph / 50Hz |
| Compliance Markings | CE and UKCA |
| Dimensions (H × W × D) | 800 mm × 460 mm × 400 mm |
| Net Weight | 30.6 kg |
| Colour | White |
| Warranty | 2 years |
Compatibility
| Suited To | Status |
|---|---|
| Site offices, meeting rooms, and welfare cabins over 12 m² and up to 46 m² | ✓ Compatible |
| Temporary offices and portable buildings | ✓ Compatible |
| Rooms with a window or external vent point available | ✓ Compatible |
| Standard 220–240V single-phase power supply | ✓ Compatible |
| Ambient temperatures between 16°C and 35°C | ✓ Compatible |
| Rooms smaller than 12 m² or larger than 46 m² | ✗ Not recommended |
| Use alongside gas, oil, or wood heating in the same enclosed room | ✗ Not recommended |
| Bathrooms, laundries, or other high-humidity rooms | ✗ Not recommended |
| Permanent fixed installation or ducted use | ✗ Not recommended |
Who is this for
Site managers, facilities teams, and site administrators responsible for keeping larger site offices, meeting rooms, and welfare cabins comfortable during warmer months without commissioning fixed air conditioning. It suits multi-desk site offices, induction and meeting rooms, and larger welfare cabins on active construction sites and civil engineering projects, where the 46 m² coverage and quieter inverter operation make it a better fit than a smaller cooling-only unit.
Typical applications
- Cooling a multi-desk site office or project management cabin during summer working hours.
- Maintaining a comfortable temperature in meeting or induction rooms used for site visits and client walkthroughs.
- Reducing humidity in larger welfare cabins where condensation builds up from occupancy.
- Providing quieter cooling in occupied offices where standard on-off units would be disruptive.
- Cooling larger facilities plant rooms or control rooms during extended shifts.
- Moving between larger cabins on multi-phase projects as different areas become occupied.
How to use
Step 1: Position the unit on a flat, level surface with at least 60cm clearance from walls and obstacles, within reach of a window or external vent point.
Step 2: Extend the integrated exhaust hose to the required length and route it through the window venting kit, keeping it as short and straight as possible.
Step 3: Connect to a 220-240V single-phase supply and select the required mode using the touch display or remote control.
Step 4: Set the target temperature and fan speed, or select auto mode to let inverter technology adjust output automatically.
Step 5: Check the internal tank indicator periodically; empty via the lower drain outlet if the display shows "FL".
Common mistakes
- Running the unit without venting the exhaust hose outside, which recirculates warm air and reduces cooling effectiveness.
- Positioning the unit closer than 60cm to a wall or obstacle, restricting airflow and reducing performance.
- Using the unit in a room smaller than 12 m² or larger than 46 m², both of which fall outside its designed operating range.
- Running the unit alongside gas, oil, or wood-fired heating in the same enclosed room, which risks a build-up of combustion gases.
- Ignoring the "FL" display warning, which indicates the internal tank needs emptying before the unit will continue cooling normally.
Safety
The unit contains R290 refrigerant, a natural gas classed as highly flammable and non-toxic (A3), so it must be used and stored in a well-ventilated space away from ignition sources. It must not operate in an enclosed room at the same time as gas, oil, or wood-fired heating appliances, due to the risk of negative pressure and combustion gas build-up. It's not designed for use in bathrooms, laundries, or other high-humidity rooms. The unit is CE and UKCA marked for UK use on a standard 220-240V single-phase supply.
Maintenance
Clean the top and bottom air filters every 2 weeks under regular use to maintain cooling efficiency; wash below 40°C if heavily soiled and dry fully before refitting. Wipe the exterior with a dry or lightly damp cloth, never with solvents, petrol, or polish. Empty the internal tank via the lower drain outlet when the display shows "FL". Store the unit and hose in a dry location when not in use, and check hose and window kit seals before each redeployment between cabins.
Frequently Asked Questions
Q: Does this unit provide heating as well as cooling?
A: No. This is a 3-in-1 unit providing cooling, dehumidifying, and fan functions only, with no heat pump or heating mode. For a unit with reversible heating, the Brittmade 240V 12,000 BTU Portable Air Conditioning Unit is the better fit.
Q: What does inverter technology actually change compared to a standard portable air conditioner?
A: A standard portable unit runs its compressor at full power or switches off entirely, overshooting the target temperature and cycling on and off repeatedly. Inverter technology modulates compressor speed continuously to match the room's actual cooling demand, holding a steadier temperature with less energy use and less noise over a full working day.
Q: What is this air conditioner not suitable for?
A: It's not designed for rooms smaller than 12 m² or larger than 46 m², and it must not run in an enclosed room at the same time as gas, oil, or wood-fired heating due to combustion gas risk. It's not suitable for bathrooms, laundries, or other high-humidity rooms, and it doesn't provide heating.
Q: Why choose this over the smaller Bosch 9000 BTU unit?
A: This unit covers up to 46 m² against the smaller model's 35 m², and adds inverter technology and an integrated exhaust hose that the 9000 BTU unit doesn't have. It suits larger multi-desk offices, meeting rooms, or bigger welfare cabins where the smaller unit would run continuously without reaching temperature.
Q: Does it need a window to vent, and how far can the hose extend?
A: Yes, the integrated exhaust hose must vent to the outside through a window kit or equivalent vent point. It extends from 300mm to 1,500mm, and Bosch recommends keeping it as short and straight as possible for the best cooling efficiency.
Q: What happens if the unit loses power during use?
A: The unit restarts automatically on its previous settings once power returns, with the compressor resuming after a 4-minute safety delay. This is a built-in protection feature and doesn't require any manual reset beyond waiting for the delay to pass.
Q: How often does the filter need cleaning, and what maintenance does the unit need?
A: Clean the top and bottom filters every 2 weeks under regular use to maintain cooling performance. Wash below 40°C if heavily soiled, dry fully before refitting, and check the internal tank periodically, emptying it via the lower drain outlet if the display shows "FL".
Q: How quickly can I get this air conditioner delivered to site during a heatwave?
A: Order by 7pm for next-day delivery nationwide on stocked lines. CMT Group operates its own fleet covering over 95% of the UK mainland, with live order tracking and What3Words integration for delivery to a specific cabin, gate, or compound entrance without needing a postcode.
Q: Can CMT Group support multiple site offices needing this unit across one project?
A: The EDGE portal lets procurement teams manage bulk orders and track deliveries across multiple site offices and cabins from one account, with live stock visibility and contract pricing for repeat equipment needs. This is backed by ISO 9001, CHAS Elite, and Crown Commercial Service Supplier accreditation for procurement teams needing documented supplier due diligence.
