Which air conditioning brand is best? 10 brands compared

Air conditioning brands are closer together than most buyers expect. The big names all make quiet, efficient units that will last, so the choice usually comes down to how the indoor unit looks, how quiet it needs to be, how you want to control it, and how well the brand is supported if anything goes wrong.

Most of the systems we fit are Daikin or Mitsubishi Electric, with Samsung close behind, so those three get the most detail here. We service and repair all of the brands below.

What makes one air conditioning brand better than another?

Six things, roughly in order of how much they matter day to day:

• Parts and support in the UK. A brand with parts in stock and engineers trained on it gets a broken unit running in days rather than weeks.
• Noise. Look for the indoor unit's lowest sound pressure level in dB(A). Below about 22 dB(A) is very quiet; the best now reach around 19.
• Efficiency. The energy label gives a SEER figure for cooling and a SCOP figure for heating. Higher means cheaper to run.
• Controls. All the main brands now offer an app, a remote and simple wall controllers. Some also work with Alexa or Google Home.
• Warranty. The length depends on the brand and on registration, which is covered further down.
• Looks. The indoor unit is on your wall for years, so it is fair for this to decide between two otherwise similar options.

Daikin

Daikin is a Japanese manufacturer and one of the best known names in air conditioning. Its UK home range runs from the entry level Sensira, through Comfora and Perfera, to the design led Stylish and Emura. The Emura and Stylish are the ones people choose when the unit is on show in a living room.

The Perfera, Stylish, Emura and Comfora all reach around 19 dB(A) on their lowest fan speed, which makes them good bedroom choices. Control is through Daikin's Onecta app, with Wi-Fi built in on most current models. Daikin also makes multi split outdoor units, so one condenser can serve several rooms.

Best for: the widest choice of designs, and rooms where the look matters.

Mitsubishi Electric

Mitsubishi Electric is also Japanese, and has a strong reputation in the UK for reliability. Its wall units run from the MSZ-HR at the entry end, through the MSZ-AP and the MSZ-EF Zen, which comes in several colours, to the top of the range MSZ-LN.

The MSZ-LN is a long standing choice for bedrooms, at around 19 dB(A) on its quietest setting. Control is through the MELCloud app, which also works with Alexa and Google Home. As with Daikin, multi split outdoor units let one condenser serve several rooms.

Best for: bedrooms, and people who want a proven name with a long track record in UK homes.

Samsung

Samsung's standout range is WindFree, in Comfort, Avant and Elite versions. Once the room reaches temperature, a WindFree unit stops blowing air at you and spreads it gently through around 23,000 tiny holes in the front panel instead. It feels still rather than draughty, which suits bedrooms, home offices and anyone who dislikes air conditioning blowing on them.

The Elite reaches around 19 dB(A) on its lowest setting. Control is through Samsung's SmartThings app, which many people already use for other Samsung appliances.

Best for: people who dislike a draught, and homes already using SmartThings.

How do Daikin, Mitsubishi Electric and Samsung compare?

Seven other brands worth knowing

• Fujitsu. A Japanese brand with a solid range of wall units and multi splits, often competitively priced.
• Toshiba. Another Japanese name, known among other things for the Haori, a wall unit with a replaceable fabric cover.
• Panasonic. A Japanese brand whose units feature nanoe X, Panasonic's own air purification technology.
• LG. A Korean manufacturer whose ArtCool units are designed to look more like a picture or mirror than a machine, with control through the ThinQ app.
• Mitsubishi Heavy Industries. A respected Japanese maker, and a separate company from Mitsubishi Electric, as explained below.
• Hitachi. A long established name in air conditioning, more often seen in commercial buildings than homes in the UK.
• Midea. A Chinese manufacturer and one of the largest in the world, which also makes units sold under other brand names.

Any of these can be a good choice. The things to check are that parts are easy to get in the UK and that the installer knows the brand well.

Is Mitsubishi Electric the same as Mitsubishi Heavy Industries?

No. They share a name and a history, but they are separate companies with separate product ranges, parts and support. Both make good air conditioning. It matters when comparing quotes, because a quote that just says "Mitsubishi" could mean either.

How long is an air conditioning warranty?

It depends on three things:

• The brand and the product. Manufacturers set different terms for different ranges.
• Registration. Most extended warranties only apply once the system is registered with the manufacturer, usually within a set time of installation.
• The installer. Several manufacturers offer longer warranties when the system is fitted by an installer they have trained or approved.

Across the main brands, the result can be anything from one year to seven. Whatever the length, an annual service is usually a condition of keeping it, and missing one can void the cover. The quote should say exactly which warranty applies to your system, and our servicing plans keep it valid.

Does the brand matter more than the installer?

No. A top of the range unit that is too small for the room will run flat out and still not cope. One fitted with a poor pipe joint will slowly lose refrigerant. A careful installation of a mid range unit will outperform a careless installation of the best one on the market.

The things that decide how well a system performs are the size, worked out for the room rather than guessed, where the indoor and outdoor units go, and the quality of the pipework and commissioning. The size calculator gives you a starting figure for any room.

Which brand should you choose?

• For a bedroom: a unit that is very quiet on its lowest setting, such as the Mitsubishi Electric MSZ-LN, Daikin Perfera or Samsung WindFree.
• Where the unit is on show: a design range such as the Daikin Emura or Stylish.
• If you dislike a draught: Samsung WindFree.
• On a tighter budget: an entry range from an established brand, such as the Daikin Sensira or Mitsubishi Electric MSZ-HR, rather than an unknown name.
• For several rooms: a multi split from any of the three main brands, with one outdoor unit serving every room.

A single room starts at £1,650 fitted, with no VAT to add until 31 March 2027. Design ranges cost more for the equipment, and the quote shows the exact model. The domestic price list has the rest.

Noise figures are the manufacturers' published sound pressure levels for the indoor unit on its lowest fan speed, checked in October 2026.