A monobloc air conditioner provides permanently fitted cooling without a separate outdoor condenser unit. It can suit bedrooms and other rooms where a suitable outside-facing wall is available. The system sits inside the room and releases heat outdoors through two discreet wall openings, giving you a permanent alternative to portable air conditioning.
Is a Monobloc Air Conditioner Right for You?
A monobloc air conditioner may suit you if you want permanently fitted cooling without a separate outdoor condenser unit. It can offer a neater and often quieter alternative to portable air conditioning, but it requires a suitable outside-facing wall, two wall openings and professional installation. It will also normally cost more than a portable unit.
A monobloc air conditioner could be a good choice if:
- You want permanently fitted cooling without a separate outdoor condenser unit.
- You have a suitable outside wall for the two ventilation openings.
- You want a quieter and neater solution than a portable air conditioner.
- You have permission to make permanent alterations to the property.
- You are prepared to invest more upfront for a permanent, professionally installed alternative to a portable unit.
What to Consider Before Buying
Wall Position and Installation Requirements
A standard monobloc unit is fitted indoors against a suitable outside-facing wall. Most models require two core-drilled openings for airflow, along with secure mounting, the correct clearances and a suitable electrical supply. The installer should also check the wall construction, external grille positions and any condensate drainage requirements for the chosen model.
Noise Levels
Because the compressor remains inside the room, a monobloc air conditioner is not silent. Modern inverter models can run quietly on their lowest or night settings, but noise levels may increase when the unit is working harder. Check the manufacturer’s sound ratings and consider whether you plan to run it while sleeping or need quieter operation while the room is occupied.
Room Size and Cooling Power
Choose a monobloc unit with enough cooling capacity for the room’s actual heat load, not just its floor area. Larger rooms, loft or top-floor rooms, high ceilings, large windows, strong afternoon sun and poor insulation may require a higher-capacity model. The installer or supplier should check the room dimensions and conditions before recommending a unit.
Running Costs and Energy Use
Monobloc air conditioners use electricity whenever they are cooling, and consumption will vary by model, room conditions and temperature setting. Compare the unit’s rated power consumption and energy-efficiency information, and avoid choosing more capacity than the room requires. Inverter operation, timers and sensible temperature settings can help reduce unnecessary energy use.
Drainage and Condensation
Monobloc air conditioners remove moisture from the air while cooling. How this condensation is handled varies by model: some require a permanent drain, while others only require drainage during heating or under particular operating conditions. The installer should check the chosen model’s instructions and agree a suitable drainage route before installation.
Unit Size and Wall Space
Monobloc air conditioners are permanently fitted and can take up a noticeable amount of wall space. Check the unit’s full dimensions and required clearances before choosing a model, including its position around furniture, curtains, radiators and electrical sockets. Compact, vertical and low-wall designs are available, so the most suitable format will depend on the room layout and the usable outside-facing wall.
Advantages and Limitations
Advantages
- No separate outdoor condenser unit is required.
- Provides permanent room cooling without an exhaust hose through a window or door.
- Usually looks neater and runs more quietly than a portable air conditioner.
- Only two discreet external grilles are normally visible from outside.
- Can be a practical option where a conventional split air-conditioning system is unsuitable.
Limitations
- Requires two core-drilled wall openings and permanent alterations to the property.
- Must be mounted on a suitable outside-facing wall, which can restrict where it is positioned.
- The compressor remains indoors, so it will normally be more noticeable at night than a split system.
- Usually costs more upfront than a portable air conditioner and requires professional installation.
- The choice of models, cooling capacities and experienced installers may be more limited than with conventional split systems.
How to Get the Best Results
A few simple steps can make a noticeable difference to cooling performance and help the unit use less energy.
- Keep the unit’s air inlet and outlet clear of furniture, curtains and other obstructions.
- Close the room’s windows and doors while the unit is cooling.
- Close curtains or blinds before strong sunlight begins heating the room.
- Start cooling before the room becomes extremely hot, using the timer or app where available.
- Use a sensible temperature setting and select Silent, Sleep or Eco mode where available.
- Clean the filters regularly and follow the manufacturer’s maintenance instructions.
Monobloc or Split Air Conditioning?
A monobloc system keeps the complete cooling system inside the room and normally requires only two wall openings, while a split system uses a separate outdoor condenser connected to the indoor unit. Split air conditioning will usually be quieter inside and may offer greater efficiency and cooling capacity, but it requires suitable outdoor space and a more involved installation. A monobloc can be the better option where an outdoor condenser is impractical, restricted or simply not wanted.
Ready to Explore Monobloc Air Conditioning?
If monobloc air conditioning appears suitable for your room, tell us about your property and requirements. Cool Bedroom will review your details and postcode before checking whether a suitable supply-and-install business is available in your area.