The short answer
Choose around how you will actually use it.
A portable unit is the lower-cost, flexible route to immediate cooling. An installed system is quieter, more efficient and better suited to regular year-round temperature control.
You rent, need seasonal cooling, want to move the unit or cannot make permanent changes.
You want quiet operation, stronger efficiency, heating and cooling, and no floor-standing unit or exhaust hose.
Large glazing, conservatories, loft rooms, high ceilings and equipment heat loads need closer assessment.
Portable air conditioning
Lower initial cost and no permanent installation.
A compressor-driven portable unit plugs into a standard socket and exhausts heat through a window. It can be moved, stored away and used without refrigerant installation work.
Compare Nomad portable unitsInitial cost Nomad portable units are priced from £399 including VAT.
Flexibility Move the unit between suitable rooms and store it outside the warmer months.
Setup No refrigerant installation, but the exhaust hose must vent outside.
Trade-offs More indoor noise, occupied floor space and lower efficiency than a well-specified split system.
Installed air conditioning
Quiet, efficient and built for regular use.
A wall-mounted split system places the compressor outside. The indoor unit is quieter, uses no floor space and can normally provide both heating and cooling.
Explore installed systemsInitial cost Typical single-room installations start from £2,499.
Everyday comfort Quiet indoor operation and stable temperature control.
Year-round use Efficient cooling in summer and air-to-air heating in cooler months.
Requirements Permanent equipment positions, a suitable pipe route and F-Gas certified installation.
Comparison FAQs
Useful answers before choosing.
Is installed air conditioning cheaper to run than a portable unit?
A correctly sized wall-mounted inverter system is generally more efficient and quieter for regular use. Actual running cost depends on capacity, efficiency, thermostat setting, room heat load and electricity price.
Can a portable air conditioner cool more than one room?
A portable unit can be moved between rooms, but it is designed to cool the room in which it is operating. It still needs a suitable window or opening for the exhaust hose each time it is used.
Does installed air conditioning provide heating?
Yes. The wall-mounted inverter systems we specify provide both cooling and efficient air-to-air heating, making them useful throughout the year.
Which option is better for a rented property?
A portable unit is usually easier because it does not require a permanent installation. Tenants should still check their tenancy terms, and landlords should consider whether a professionally installed system could improve long-term comfort and appeal.
Still unsure?
Tell us about the room, property and expected use. We will explain the sensible route without pushing the more expensive option.