What’s involved in getting air con installed in a UK home?

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A lot of UK homeowners love the idea of air conditioning… but assume it’s a big, messy job.

The truth? Modern air conditioning installation is quicker, cleaner, and more flexible than you might expect. Whether you live in a semi, flat, or period property, there’s almost always a solution — without tearing up walls or applying for planning permission.

Here’s what’s really involved in getting air conditioning installed in a UK home, step by step.

First: Can any home have air con?

In short: yes, nearly all UK homes can have air con.

You don’t need:

  • A new-build or large modern property
  • Loft space or ducting
  • Full-home coverage

Most homes simply use a split-system setup, with:

  • A small, discreet outdoor unit (usually at the back or side of the house)
  • One or more indoor units, wall, or floor-mounted, or recessed in ceilings in key rooms

Whether you live in a flat, terrace, bungalow, or detached house, your installer can design a system that works around your space, budget, and needs.

What happens during an installation?

Here’s a typical step-by-step air con installation journey:

1. Survey & quote

A qualified engineer visits your home to:

  • Assess the layout, room sizes, and access points
  • Discuss where you want units placed
  • Answer your questions and show product options
  • Provide a fixed-price quote and timeline

Time needed: 30–60 minutes

2. Booking your install date

Once you’re happy with the quote:

  • You pick a convenient date
  • Any necessary parts or units are ordered in advance
  • The job is scheduled (most installs take 1 day for single unit installations)

3. Installation day

The engineers will:

  • Mount the indoor unit in the chosen room(s)
  • Fit the outdoor unit securely and discreetly
  • Drill a small hole (about 60–70mm) through the wall for pipes and cables
  • Connect refrigerant pipes, drainage, and power cables
  • Vacuum test, pressurise, and charge the system
  • Test everything to ensure it runs quietly and efficiently

4. System handover

Once installed, the engineers will:

  • Show you how to use the system
  • Set up timers, modes, and Wi-Fi controls
  • Explain how to clean filters and maintain the unit
  • Answer any last questions

You’ll also receive a warranty certificate, user manual, and aftercare info.

What about mess, noise, or damage?

Here’s what to expect — and what not to worry about:

  • No major building work required
  • Only one small hole per unit through the wall
  • No dust or debris — engineers use protective sheets and tidy as they go
  • Outdoor units are quiet and compact
  • Indoor units are sleek and discreet — often mounted above eye level on a wall, or recessed in a ceiling.

Most systems are up and running within a single day, especially if you’re starting with one room (like a bedroom or office).

Do you need planning permission?

In most UK homes, no planning permission is required if:

  • The external unit is installed below 1m in height
  • It’s not on a listed building
  • You’re not in a conservation area

That said, it’s always worth checking with your freeholder if you live in a leasehold flat.

Do you need servicing or maintenance?

To keep your system running efficiently:

  • Clean the indoor filter every 2–3 months (easy DIY job)
  • Schedule a professional service once a year, especially if used for heating

Regular maintenance helps:

  • Improve air quality
  • Extend the system’s life
  • Maintain energy efficiency

A good installer may even offer an annual maintenance plan for peace of mind.

How long does it all take?

StepTime
Home survey30–60 mins
Booking & orderingVaries, depending on time of year
Installation1 day (more for multi-room)
Handover & training30 mins

From enquiry to installation, many homeowners have their system up and running within a week or two, especially outside peak summer months.

Installation cost range (typical)

Home TypeTypical Cost Range (1–2 rooms)
Flat or small house£1,800–£2,500
Larger home or multi-room£2,800–£5,000

Prices vary based on:

  • Number of units/rooms
  • Access and property layout
  • Type of unit (standard vs. premium models)

Summary: What you’ll get

  • Fast, tidy installation with minimal disruption
  • Year-round comfort and control
  • A clean, quiet, and energy-efficient system
  • Peace of mind with full warranty and aftercare

Want to see what it would look like in your home?

Book a quick quote with our team — no pressure, just practical advice.