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Portable split air conditioner UK: what to check before you pay

Updated: 21 October 2026

A portable split air conditioner on amazon.co.uk is supposed to be two boxes and a short line, with the heat rejected outside. In this scrape that means a Midea PortaSplit at £1,099.99 and seven thinner titles from £365.99 to £454.48. Before you pay, see which class the page is, and whether you have a place for the outdoor unit. The ranked table is the [portable split air conditioner comparison](/hub/cooling/portable-split-air-conditioner). Peter F. updated it on 19 October 2026, not from a lab test. A qualifying purchase can earn a commission at no extra cost to you.

A portable split air conditioner on amazon.co.uk is supposed to be two boxes and a short line, with the heat rejected outside.

Our top picks

Midea Midea PortaSplit 12000 BTU

Best overall

Midea Midea PortaSplit 12000 BTU
8.2/10about £1,099.99
View offer
Generic Generic 5000 BTU 2 m tube

Rank 2

Generic Generic 5000 BTU 2 m tube
3.8/10about £403.99
View offer
Generic Generic 5000 BTU UK plug

Rank 3

Generic Generic 5000 BTU UK plug
2.3/10about £454.48
View offer
On this page
  1. 1.Two kinds of listing
  2. 2.Seven checks before you pay
  3. 3.Figures you should not trust
  4. 4.When to walk away

Two kinds of listing

The PortaSplit, B0GYPN1724, is the named heat pump: £1,099.99, 4.3 from 23 reviews. Midea’s UK page states 3.5 kW, a pipe of about 2 m, 39 dB(A) indoors in silent mode, and 56 dB(A) outdoors. The fiche states SEER 6.1 and R32. The other seven claim about 3,000 or 5,000 BTU and do not state a refrigerant. Treat that group as unverified, not as a smaller PortaSplit. A single conditional pick is on best portable split air conditioner.

Seven checks before you pay

You need a place for the outdoor unit first, a ground floor or a balcony in the PortaSplit reviews. The Midea line is about 2 m and fixed. If your gap is longer, the listing cannot grow to fit. “No window kit” does not name the gas. 39 dB(A) is indoor silent mode, and that mode cuts cooling. Neighbours hear 56 dB(A) on the maker’s page. The manual states 220–240 V and 10 A, with a 1.8 m lead. The plug shape is not stated on the listing we used. Only B0HGM44ZW2 states a fitted UK three-pin plug. The 5,000 BTU rows do not state heating.
Midea Midea PortaSplit 12000 BTU

Testsieger

Midea Midea PortaSplit 12000 BTU
8.2/10about £1,099.99
View offer

Figures you should not trust

Several generic rows print 1 kV, 1 kWh a year, and 1 dB. Those cannot describe a room cooler on UK mains. Do not average them with a bullet that says 40 dB. The PortaSplit specification row says an outdoor unit is not required. The reviews describe a separate outdoor unit. Follow the reviews. The same product image sits on the 1 m, 1.5 m, and 2 m generic pages, so the photo is not the tube length.

When to walk away

Walk away when the outdoor box has nowhere safe to stand, or the line is shorter than the gap you measured. The UK manual wants a sill at least 30 cm deep, and it says not to hang the unit from the steel rope. Do not extend a sealed pipe after delivery. Opening or disposing of the circuit needs an F-gas qualified person. If you suspect a leak, unplug, ventilate, keep flames away, leave, and call service.

Common questions

How do I know it is a real split and not a water cooler?
A refrigerant split has an indoor coil and an outdoor coil joined by a line that rejects heat outside. The PortaSplit states R32 and a heat pump, and reviews describe a separate outdoor unit. A water cooler wets a pad and blows air. It has no outdoor condenser. If the page never names a refrigerant and never shows a second box, the word split in the title has not settled it.
Is 5,000 BTU enough for a bedroom?
On these cheap listings it is only a claim. None states a test next to 5,000 BTU, and “up to 14 m²” or “up to 20 m²” is not verified in the file. The capacity you can source here is the PortaSplit’s 3.5 kW. One owner cooled an 18 m² lounge. Another did not get a studio below 25°C. A bedroom can be easier, and it can still fail if the line is 1 m and the outdoor unit sits in the sun.
How long a line do I need?
You need the length the listing states, measured from a safe outdoor spot to the indoor unit. On the PortaSplit that is about 2 m, and the pipe is fixed. The cheap titles state 1 m, 1.5 m, or 2 m. A deeper room does not create a longer pipe. Do not cut or join a sealed refrigerant line to gain a metre.
Does it come with a UK plug?
Only B0HGM44ZW2 states a fitted UK three-pin plug, and that page has no star line. The PortaSplit manual states 220–240 V and 10 A, with a 1.8 m lead on the maker’s page. The plug shape is not stated on the listing we used. Rows that say 1 kV do not state a BS 1363 plug. Check the pins on the live page before you count on a 13 A socket.
Can it heat, and which noise number counts?
The PortaSplit heats. Reviewers who tried it said so. The fiche’s heating figure is 770 kWh a year, separate from 201 kWh for cooling. The other listings here do not state heating. For noise, use both ends. Indoor silent mode is 39 dB(A) and it limits cooling. Outdoor sound pressure on the maker’s page is 56 dB(A). A page that says 1 dB in the table and 40 dB in the bullets has not given you a figure you can quote.
When is the £1,100 unit the wrong buy?
When you have nowhere for the outdoor box, when you need to carry it between rooms, or when the fixed pipes are shorter than the opening you measured. It is also the wrong buy if you need whisper-quiet full cooling, because 39 dB(A) is silent mode. In that case look at the hose comparison, not at an unreviewed 5,000 BTU title.

Related pages

Portable split versus a monoblock

Portable split air conditioner

Best portable split air conditioner: the UK top pick

Portable air conditioner rental flat with no drilling

How to set up a portable split air conditioner safely

Sources

Public UK sources, the Midea PortaSplit manual and the product fiche. amazon.co.uk prices and stars on these listings were read on 19 October 2026. Page updated 20 October 2026.

  1. Midea UK: PortaSplit (retrieved 19 October 2026)
  2. Midea UK: PortaSplit user manual (retrieved 19 October 2026)
  3. PortaSplit product fiche (retrieved 19 October 2026)
  4. legislation.gov.uk: F-gas Regulation Annex III (retrieved 19 October 2026)
  5. GOV.UK: bans on F-gas in new products and equipment (retrieved 19 October 2026)
  6. Planning Portal: air conditioning in the home (retrieved 19 October 2026)
  7. legislation.gov.uk: Environmental Protection Act 1990, section 79 (retrieved 19 October 2026)
  8. amazon.co.uk listings in this comparison, including B0GYPN1724 (retrieved 19 October 2026)