Air conditioning is becoming more popular in UK homes as summers get hotter.

Whether you’re looking for whole-house cooling or just need to keep a single room comfortable, installing air conditioning can be a worthwhile investment.

However, air conditioning installation costs in the UK vary widely based on factors like system type, home size, and labour costs. In this guide, we will look the following:

• How much does it cost to install air conditioning in the UK.
• The types of AC systems available and their installation costs.
• Labour fees, running costs, and planning permissions.
• How to save money on installation & maintenance.

By the end, you will know exactly what to budget for and how to choose the right air conditioning system for your home.

How Much Does It Cost to Install Air Conditioning in the UK?

The cost of installing air conditioning primarily depends on:

• Type of AC system (split, ducted, portable, or window unit).
• Labour costs (varies by installer and complexity).
• Property size and layout (larger homes require bigger systems).
• Electrical and pipework modifications.

Average Air Conditioning Installation Costs in the UK (2025 Estimates)

AC Type	Installation Cost (£)	Best For
Portable AC (No installation)	200 – 600	Small rooms, rental properties
Split System AC	1,000 – 2,500	Single rooms or small homes
Ducted Air Conditioning	3,000 – 7,000	Whole-house cooling
Window AC Unit	800 – 1,500	Apartments, small spaces

Split systems are the most common choice for UK homes due to their balance of efficiency and cost.

How Much Does It Cost to Install Air Conditioning in a UK House?

Cost Breakdown by Home Size

Home Size	Recommended AC Type	Estimated Cost (£)
1-Bedroom Flat	Split system or window AC	1,000 – 2,000
2-Bedroom House	Split system (multi-room)	2,000 – 4,000
3-Bedroom House	Ducted or multi-split	3,000 – 7,000
4+ Bedroom House	Full ducted system	5,000 – 10,000

For small flats and single rooms, window or portable AC units are cost-effective as we can cool the room without air conditioning.

Larger homes benefit from multi-split or ducted systems for even cooling.

How Much Does It Cost to Install Air Conditioning in a 3-Bedroom House?

For a three-bedroom home, you have two main options:

• Multi-split system (three indoor units, one outdoor unit): £3,000 – £5,500
• Ducted system (whole-house cooling): £5,000 – £7,000+

Split systems are cheaper upfront, while ducted AC offers seamless cooling but at a higher installation cost.

Though renovating bedroom in UK will also includes installing air conditioning.

How Much Does It Cost to Install Air Conditioning in One Room?

For single-room cooling, you can choose:

• Portable AC (no installation) – £200 – £600
• Wall-mounted split system – £1,000 – £2,500 (installed)
• Window AC unit – £800 – £1,500 (including installation)

Split systems cost more initially but are quieter and more energy-efficient than portable units.

What Are the Different Types of Air Conditioning Systems and Their Installation Costs?

Split System Air Conditioning Cost

• Most common for UK homes.
• Cost: £1,000 – £2,500 (including installation).
• Best for cooling individual rooms or small homes.

Ducted Air Conditioning (Central AC) Cost

• Provides whole-house cooling via ducts in the ceiling or walls.
• Cost: £3,000 – £7,000+.
• Best for large homes needing even temperature control.

Portable Air Conditioner Cost (No Installation Required)

• Cheapest option but less efficient.
• Cost: £200 – £600.
• Best for small rooms and rental properties.

Window Air Conditioner Cost

• Requires window or wall mounting.
• Cost: £800 – £1,500.
• Best for apartments or rooms without external walls.

How Much Do Air Conditioning Installers Charge in the UK?

Labour Cost Breakdown

Service	Estimated Cost (£)
Single split unit installation	300 – 800
Multi-split system (3-4 units)	1,000 – 2,000
Ducted AC installation	2,000 – 5,000+

Additional costs apply if electrical upgrades or pipework modifications are needed.

Do I Need Planning Permission to Install Air Conditioning in the UK?

Most homes do not need planning permission for air conditioning. However, there are exceptions:

• Flats, listed buildings, and conservation areas.
• Outdoor condenser units creating excessive noise.

Always check with your local council if you live in a restricted area.

What Are the Running Costs After Installing Air Conditioning?

AC Type	Average Running Cost per Hour (£)
Portable AC (8,000 BTU)	0.20 – 0.30
Split System (12,000 BTU)	0.30 – 0.50
Ducted System (24,000 BTU)	0.60 – 1.10

Energy-efficient models save up to 30% on running costs over time.

How to Save Money on Air Conditioning Installation?

• Compare at least three quotes from different installers.
• Choose an energy-efficient model to reduce long-term costs.
• Install in winter when demand is lower (some companies offer discounts).
• Check for government incentives for energy-efficient ACs.

Conclusion

• Installation costs range from £1,000 to £7,000+, depending on AC type.
• Split systems are ideal for most UK homes, while ducted systems suit larger properties.
• Running costs vary, but energy-efficient models help save money.
• Always compare quotes, check installer credentials, and choose the right system for your needs.

By following the guide on how much does it cost to install air conditioning in the UK and by making the right choice, you can enjoy cool, comfortable summers without overspending.

Related Article: How to Cool a Room Without Air Conditioning?

FAQs About How Much Does It Cost to Install Air Conditioning in the UK

1. Is It Cheaper to Install Air Conditioning in Winter?

Yes. Some AC companies offer off-season discounts.

2. Can I Install Air Conditioning Myself?

DIY installation is not recommended as handling refrigerants requires an F-Gas licence.

3. How Long Does It Take to Install Air Conditioning?

• Portable AC – Immediate use.
• Split system – 4–8 hours per unit.
• Ducted system – 3–7 days.