Installation

Sized, fitted and tuned to 21°.

21Aircon measures the heat load of your actual rooms and fits the unit that matches it. Not the biggest, not the cheapest to supply: the right one.

from £1,150fitted, itemised to the pound
1 dayfor most single-room installs
24 hrfrom survey to quote
A bright open-plan living room with a wall-mounted air conditioning unit

What your quote includes.

Every line itemised. Unit, pipework, labour, all of it. If the invoice ever differs from the quote, the quote wins.

Heat-load surveyRoom by room, measured not guessed.
Unit, brackets & pipeworkEach part priced on its own line.
Tidy pipe runDressed and boxed, the route you'd choose.
Vacuum test & exact chargeRefrigerant to the manufacturer's spec.
App pairing & walkthroughSchedules set before we leave.
Clean finishPackaging and waste leave with us.

From survey to switch-on.

Step 1

Survey

Photos and room sizes over the phone, or a 20-minute visit. We measure heat load, not guesswork.

Step 2

Quote

Itemised to the pound within 24 hours. Unit, pipework, labour. No "supply and fit" lump sums.

Step 3

Install

Usually one day, 8:00 start. Floors protected, packaging taken away, dust hoovered before we leave.

Step 4

Handover

We set your setpoint together, pair the app and leave a one-page manual you'll actually read.

What homes like yours pay.

Typical figures. Your quote is itemised to the pound.

One room

£1,150 to £1,450

Bedroom or living room split unit, fitted in a day. Range depends on pipe run and mounting.

Two to three rooms

£2,400 to £3,600

One outdoor unit, multiple rooms. Two days on site, one setpoint per room.

Whole home

from £4,800

Multi-zone system, two to three days. Surveyed room by room before we quote.
Instant estimate

Price your install in 30 seconds.

Pick your home and the rooms you'd like cooled. You'll get an indicative range now, itemised to the pound after a free survey.

Your home
Rooms to cool
Small room
Bedroom, office or nursery · 2.5kW
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Medium room
Large bedroom or small living room · 3.5kW
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Large room
Living room, kitchen-diner or open-plan · 5kW
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Indicative install
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{{ mediumCount }} × medium room3.5kW
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Add a room to see your estimate.

Includes the unit(s), a tidy pipe run, fitting, testing and a 5-year warranty. Final price is itemised after a free survey.

Get this itemised, free survey

Tested to your setpoint before we leave.

Every 21Aircon install is commissioned and measured against your setpoint before we sign it off, then covered by a 5-year parts and labour warranty. A right-sized system reaches a comfortable temperature quickly; if it underperforms against the design, we return and put it right.

Get an installation quote