A 12,000 BTU reversible portable air conditioning unit built for cooling and heating site cabins, welfare units, and temporary site offices year-round.
- Reversible 12,000 BTU cooling and 10,000 BTU heating from one unit
- 4-in-1 modes: cooling, heating, dehumidifying and fan
- Suitable for rooms approximately 18–23m²
- 3-speed fan with 400m³/h airflow
- Auto swing function distributes air evenly across the room
- 24-hour programmable timer with sleep mode
- Touch controls with LED display
- WiFi control available as an optional feature
- R290 refrigerant with low GWP of 3kg CO2
- Dehumidifying capacity: 1.2L/h
- Cooling power consumption: 1,300W
- Heating power consumption: 1,120W
- Noise level: 54dB(A)
Due to exceptionally high demand, these air conditioning units are specially sourced to fulfil customer orders and are subject to increased supplier and transport costs. We strongly recommend reserving your unit by placing your order as soon as possible. As these products are specially procured, orders cannot be cancelled, amended or returned once placed, except where required by applicable consumer law.
Brittmade 240V 12,000 BTU Portable Air Conditioning Unit
A 12,000 BTU reversible portable air conditioning unit built for cooling and heating site cabins, welfare units, and temporary site offices year-round.
- Reversible 12,000 BTU cooling and 10,000 BTU heating from one unit
- 4-in-1 modes: cooling, heating, dehumidifying and fan
- Suitable for rooms approximately 18–23m²
- 3-speed fan with 400m³/h airflow
- Auto swing function distributes air evenly across the room
- 24-hour programmable timer with sleep mode
- Touch controls with LED display
- WiFi control available as an optional feature
- R290 refrigerant with low GWP of 3kg CO2
- Dehumidifying capacity: 1.2L/h
- Cooling power consumption: 1,300W
- Heating power consumption: 1,120W
- Noise level: 54dB(A)
Due to exceptionally high demand, these air conditioning units are specially sourced to fulfil customer orders and are subject to increased supplier and transport costs. We strongly recommend reserving your unit by placing your order as soon as possible. As these products are specially procured, orders cannot be cancelled, amended or returned once placed, except where required by applicable consumer law.
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Log in to access trade discountsBrittmade 240V 12,000 BTU Portable Air Conditioning Unit
Reversible portable air conditioning unit delivering 12,000 BTU of cooling and 10,000 BTU of heating from a single compact machine, built for site cabins, welfare units, and temporary site offices that need year-round climate control without fixed installation. Unlike cooling-only alternatives, this unit switches between cooling, heating, dehumidifying, and fan modes from the same touch control panel, giving site managers one machine to cover both summer heat and winter cold. Runs on R290 refrigerant with a GWP of 3kg CO2, supporting sites with sustainability reporting requirements.
How reversible heating and cooling solves year-round site comfort
A cooling-only portable unit becomes dead weight the moment a site cabin needs heating through February and winter cold snaps, forcing site managers to source and store a separate heater alongside it. That means double the equipment budget, double the storage space, and double the maintenance across a project that could run for months either side of summer. A reversible unit removes that duplication entirely, switching from 12,000 BTU cooling in summer to 10,000 BTU heating in winter from the same footprint, the same power connection, and the same control panel.
Key Features
- Reversible cooling and heating: Delivers 12,000 BTU cooling and 10,000 BTU heating from one unit, removing the need for separate summer and winter equipment on site.
- R290 refrigerant, GWP 3kg CO2: Low global warming potential refrigerant supports sites with carbon reporting or ESG procurement requirements.
- Built-in dehumidifier: Extracts up to 1.2 litres of moisture per hour, reducing condensation and damp inside cabins and welfare units.
- 3-speed fan with auto swing: Distributes air evenly across the room rather than concentrating airflow on one spot.
- 24-hour timer and sleep mode: Runs unattended overnight or on a set schedule without manual restarting each shift.
- Child lock and water full stop: Prevents accidental setting changes and automatically halts operation when the internal tank reaches capacity.
- Auto-defrost function: Maintains heating performance in cold conditions by automatically clearing ice build-up from the coil.
Who is this for
Trades and roles:
- Site managers
- Facilities managers
- Welfare unit operators
- Site office administrators
Industries:
- Construction
- Civil engineering
- Events and temporary site accommodation
- Facilities management
Specifications
| Specification | Detail |
| Product Name | Brittmade 240V 12,000 BTU Portable Air Conditioning Unit - Reversible Cooling and Heating |
| SKU | KCPAC-12K-3032 |
| Function Modes | Cooling, heating, dehumidifying, fan |
| Cooling Capacity | 12,000 BTU / 3,500W |
| Heating Capacity | 10,000 BTU / 2,700W |
| Cooling Power Input | 1,300W / 6.0A |
| Heating Power Input | 1,120W / 4.8A |
| Voltage / Frequency | 220-240V / 50Hz |
| Refrigerant | R290, 200g |
| GWP | 3kg CO2 |
| Dehumidification Rate | 1.2 litres per hour |
| Airflow | 400m³/h |
| Fan Speeds | 3-speed with auto swing |
| Temperature Control Range | 15-31°C |
| Working Ambient Temperature (Cooling) | 15-35°C |
| Working Ambient Temperature (Heating) | 5-35°C |
| Applicable Room Area | 18-23m² |
| Noise Level | 54dB(A) / 65dB(A) |
| Control Type | Touch control with LED display |
| WiFi Control | Optional |
| Timer | 24-hour |
| Sleep Mode | Yes |
| Child Lock | Yes |
| Water Full Stop | Yes |
| Automatic Defrosting | Yes |
| Protection Class | Class 1 |
| Fuse | 3.15A 250VAC |
| Effective Water Tank Volume | 0.6 litres |
| Standby Power | Under 0.5W |
| Certification | CE, EMC, LVD, RoHS, REACH |
| Net Weight | 30kg |
| Gross Weight | 32.5kg |
| Product Dimensions (WxDxH) | 440 x 335 x 710mm |
| Packaging Type | Cardboard, castor wheels fitted |
Compatibility
| Application or condition | Status |
| Site cabins and welfare units | ✓ Compatible |
| Portable site offices | ✓ Compatible |
| Areas up to approximately 23m² | ✓ Compatible |
| Standard 220-240V single-phase supply | ✓ Compatible |
| Year-round cooling and heating use | ✓ Compatible |
| Permanent fixed installation | ✗ Not recommended |
| Use without exhaust hose vented outside | ✗ Not recommended |
| Outdoor or unsheltered exposure | ✗ Not recommended |
Who is this for
This unit is specified for site managers and facilities teams responsible for temperature control in site cabins, welfare units, and portable site offices where fixed air conditioning cannot be installed. It suits projects running through both summer and winter, since the reversible function replaces the need for separate cooling and heating equipment across the life of a build. It's equally applicable to events and temporary site accommodation where a self-contained, plug-in unit needs to be moved between locations without ductwork or a qualified installer.
Typical applications
- Cooling site cabins and portable offices during summer months on active construction sites.
- Heating welfare units and site cabins through winter without sourcing a separate heater.
- Controlling humidity in site cabins prone to condensation from occupancy and equipment heat.
- Providing temporary climate control in marquees, site meeting rooms, and temporary event accommodation.
- Supplementing HVAC in server rooms or plant rooms on site where existing cooling is insufficient.
- Relocating between site cabins and offices across a project as occupancy needs change.
How to use
Step 1: Position the unit on a level, stable surface within reach of a suitable exhaust route, using the castor wheels to move it into place.
Step 2: Attach the exhaust hose and vent it through a window, wall vent, or door kit so warm air is expelled outside the cabin.
Step 3: Connect to a 220-240V supply and select the required mode: cooling, heating, dehumidifying, or fan.
Step 4: Set the target temperature between 15°C and 31°C and select a fan speed.
Step 5: Set the 24-hour timer or sleep mode if the unit needs to run unattended overnight.
Step 6: Check the water tank periodically and empty if the water full stop indicator activates.
Common mistakes
- Running the unit without venting the exhaust hose outside, which recirculates warm air back into the cabin and reduces cooling performance.
- Undersizing the unit for the cabin: this model suits rooms up to approximately 23m², larger cabins will need a higher-capacity unit or supplementary cooling.
- Ignoring the water full stop warning, which halts operation until the tank is emptied.
- Positioning the unit against a wall or in a corner that restricts airflow into the intake vents.
- Expecting heating performance below 5°C ambient, which is outside the unit's rated working range.
Safety
Operates on a standard 220-240V supply and must be connected to a properly earthed socket, in line with its Class 1 protection rating. The unit uses R290 refrigerant, which is mildly flammable in concentrated form: keep away from open flames and ensure the cabin has adequate ventilation. Not designed for permanent fixed installation or use in areas larger than approximately 23m².
Maintenance
Empty the water tank regularly, particularly in humid conditions or heavy dehumidification use. Clean or rinse the air filter periodically to maintain airflow and cooling efficiency. Check the exhaust hose connection before each relocation. Store indoors when not in use, away from direct sunlight and extreme temperatures.
Frequently Asked Questions
Q: What size room or cabin can this air conditioning unit cool?
A: This unit is rated for spaces of approximately 18 to 23m², which covers most standard site cabins and welfare units. Cooling performance drops in larger or poorly insulated spaces, so a cabin significantly above this size will need a higher-capacity unit or supplementary cooling. Room shape, ceiling height, and window area will also affect actual cooling performance.
Q: What do the compliance markings on this unit mean?
A: The unit carries CE, EMC, LVD, RoHS, and REACH markings. CE and LVD confirm it meets UK and EU electrical safety requirements for low-voltage equipment, whilst EMC confirms it won't cause or suffer from electromagnetic interference. RoHS and REACH confirm the unit is manufactured without restricted hazardous substances. Together these markings confirm the unit is legally compliant for sale and use in the UK.
Q: What is this unit NOT suitable for?
A: This unit is not designed for permanent fixed installation or for rooms substantially larger than its rated 18 to 23m² capacity. It requires the exhaust hose to be vented outside to function correctly and is not intended for outdoor or unsheltered use. Heating performance also falls outside its rated range below 5°C ambient temperature.
Q: Why choose a reversible unit over a cooling-only air conditioner?
A: A cooling-only unit becomes redundant the moment a site cabin needs heating through autumn and winter, forcing a separate heater to be sourced and stored alongside it. This unit delivers 12,000 BTU cooling and 10,000 BTU heating from the same machine, the same power connection, and the same control panel. That removes the cost and storage burden of running two separate pieces of equipment across a project.
Q: Does this unit need to be vented outside to work properly?
A: Yes. The exhaust hose must be connected and vented through a window, wall vent, or door kit so warm air is expelled from the cabin. Running the unit without proper venting recirculates warm air back into the room and significantly reduces cooling performance. This applies in both cooling and heating modes.
Q: How do I keep this unit running reliably over a long site project?
A: Empty the water tank regularly, particularly during heavy dehumidification use, and rinse the air filter periodically to maintain airflow. Check the exhaust hose connection whenever the unit is relocated between cabins. The automatic defrosting function maintains heating performance in colder conditions without manual intervention.
Q: How quickly can I get this air conditioning unit onto site?
A: Our EDGE portal lets procurement teams place orders with live stock visibility, agreed contract pricing, and full delivery tracking through to drop-off, which matters for site equipment that often needs to move between locations at short notice. CMT Group can typically despatch stocked lines for next-day delivery when ordered before 7pm.
Q: How do I know CMT Group is a reliable source for site air conditioning equipment?
A: We hold ISO 9001:2015, CHAS Elite, and Crown Commercial Service Supplier accreditations, alongside BSIF Registered Safety Supplier status, reflecting independently assessed quality and compliance standards. These accreditations matter for procurement teams who need to demonstrate supplier due diligence on public sector or larger commercial projects. CMT Group has supplied UK construction and site equipment since 2010.
