Engineer installing a ceiling cassette commercial air conditioning unit in a modern UK office
Commercial air conditioning installation

Commercial Air Conditioning Installation

BritOne Air designs, supplies and installs commercial air conditioning for offices, retail units, restaurants, salons, gyms, surgeries and server rooms across the UK. Fixed written quotes from £1650 + VAT, fitted by our own F-Gas certified engineers — never subcontracted out of our control.

  • Fixed written quotes from £1650 + VAT
  • Cassette, ducted, multi-split and VRF systems
  • Out-of-hours and phased installation available
  • 3-year parts & labour warranty

Cooling that keeps your business trading

Commercial spaces gain heat from people, lighting, kitchen equipment and IT loads long before the weather is considered. We carry out a proper heat-load calculation for each zone, then specify the system that holds temperature at peak occupancy — not just on a mild afternoon. That means comfortable staff, protected stock and equipment, and lower running costs than an undersized system pushed permanently to maximum output.

One contractor, one guarantee

Electrical supply, isolators, containment, core drilling, roof and wall mounting, condensate routing, commissioning and handover documentation are all delivered by our in-house teams. You get a single point of contact, a single fixed price and a single 3-year parts and labour warranty — no arguments between trades if something needs revisiting.

Compliant, certified and documented

Every installation is completed by F-Gas certified engineers in line with EU F-Gas Regulation 517/2014 as retained in UK law. You receive commissioning records and refrigerant documentation for your building file, plus a maintenance schedule so your warranty and statutory records stay valid.

Installed around your opening hours

We phase larger fit-outs floor by floor and regularly work evenings and weekends so shops, restaurants and offices keep trading. Access, RAMS, parking and landlord permissions are agreed at survey, so installation day runs to plan.

Systems we install

Specified for the building, not the brochure.

Ceiling cassettes

Four-way discharge units recessed into suspended ceilings — even coverage for open-plan offices and retail floors.

Ducted systems

Concealed indoor units feeding grilles across multiple rooms where a visible unit isn't acceptable.

Multi-split systems

Two to five indoor units on one outdoor condenser — ideal where roof or yard space is limited.

VRF / VRV

Scalable heat pump systems for whole buildings with simultaneous heating and cooling zones.

How it works

Survey, fixed price, installation.

  1. 01

    Free site survey

    We assess heat loads, zoning, electrical capacity, pipe routes and outdoor unit positions on site.

  2. 02

    Fixed written quote

    A fully itemised proposal covering units, labour, materials, electrics and making good — no hidden extras.

  3. 03

    Scheduled installation

    Works phased around your trading hours by our own engineers, with RAMS and site paperwork in place.

  4. 04

    Commission & handover

    System tested, controls demonstrated, documentation issued and your 3-year warranty registered.

Commercial units we install

Cassette and multi split systems, supplied and fitted.

Every system below is supplied by BritOne Air and installed by our own F-Gas certified engineers, with a 3-year parts and labour warranty.

View all units →
Mitsubishi Electric M 4-way Blow Ceiling Cassette System 3.5kW (12,000 BTU) R32
In stock · 4 available
Mitsubishi Electric Ceiling Cassette
SKU ME-M12-B

Mitsubishi Electric M 4-way Blow Ceiling Cassette System 3.5kW (12,000 BTU) R32

  • Heating & cooling
  • R32 refrigerant
Size options
  • 3.5kW / Single Phase / Black
  • 5.0kW / Single Phase / Black
  • 6.0kW / Single Phase / Black
  • 7.1kW / Single Phase / Black
  • 10.0kW / Single Phase / Black
  • +15
From
£2,115.93
EX. VAT · INC £2,539.12
CHOOSE SIZE
Mitsubishi Electric ZM 4-way Blow Ceiling Cassette System 3.5kW (12,000 BTU) R32
In stock · 4 available
Mitsubishi Electric Ceiling Cassette
SKU ME-ZM12-B

Mitsubishi Electric ZM 4-way Blow Ceiling Cassette System 3.5kW (12,000 BTU) R32

  • Heating & cooling
  • R32 refrigerant
Size options
  • 3.5kW / Single Phase / Black
  • 5.0kW / Single Phase / Black
  • 6.0kW / Single Phase / Black
  • 7.1kW / Single Phase / Black
  • 10.0kW / Single Phase / Black
  • +15
From
£2,099.99
EX. VAT · INC £2,519.99
CHOOSE SIZE
LG Ceiling Cassette System 2.5kW (8,500 BTU) R32
In stock · 4 available
LG Ceiling Cassette
SKU LGE-CT09A

LG Ceiling Cassette System 2.5kW (8,500 BTU) R32

  • Heating & cooling
  • R32 refrigerant
Size options
  • 2.5kW
  • 3.5kW
  • 5.0kW
  • 7.0kW
  • 8.0kW
  • +3
From
£1,325.62
EX. VAT · INC £1,590.74
CHOOSE SIZE
LG Round Cassette System 10.0kW (34,000 BTU) R32
In stock · 4 available
LG Ceiling Cassette
SKU LGE-UT36F-D1

LG Round Cassette System 10.0kW (34,000 BTU) R32

  • Heating & cooling
  • R32 refrigerant
Power options
  • Single Phase / 10.0kW
  • Single Phase / 14.0kW
  • Three Phase / 10.0kW
  • Three Phase / 14.0kW
From
£2,812.49
EX. VAT · INC £3,374.99
CHOOSE SIZE
LG Multi F 2-Way Multi Split Outdoor Unit 4.1kW (14,000 BTU) R32
Back-order · 3 weeks
LG Multi Split Outdoor
SKU MU2R15.U18A0

LG Multi F 2-Way Multi Split Outdoor Unit 4.1kW (14,000 BTU) R32

  • Heating & cooling
  • R32 refrigerant
£1,218.74
EX. VAT · INC £1,462.49
PRE-ORDER
LG Multi F 2-Way Multi Split Outdoor Unit 4.7kW (16,000 BTU) R32
Back-order · 3 weeks
LG Multi Split Outdoor
SKU MU2R17.U18A0

LG Multi F 2-Way Multi Split Outdoor Unit 4.7kW (16,000 BTU) R32

  • Heating & cooling
  • R32 refrigerant
£1,284.37
EX. VAT · INC £1,541.24
PRE-ORDER
LG Multi F 3-Way Multi Split Outdoor Unit 5.3kW (18,000 BTU) R32
Back-order · 3 weeks
LG Multi Split Outdoor
SKU MU3R19.U24A0

LG Multi F 3-Way Multi Split Outdoor Unit 5.3kW (18,000 BTU) R32

  • Heating & cooling
  • R32 refrigerant
£1,340.62
EX. VAT · INC £1,608.74
PRE-ORDER
LG Multi F 3-Way Multi Split Outdoor Unit 6.2kW (21,000 BTU) R32
Back-order · 3 weeks
LG Multi Split Outdoor
SKU MU3R21.U24A0

LG Multi F 3-Way Multi Split Outdoor Unit 6.2kW (21,000 BTU) R32

  • Heating & cooling
  • R32 refrigerant
£1,462.49
EX. VAT · INC £1,754.99
PRE-ORDER
Top brands

All top brands, supplied and installed

Mitsubishi Electric, Daikin, LG, Samsung, Toshiba and more — specified against your heat load, not a catalogue page.

Air conditioning installation from £1650 + VAT

Air conditioning installation across the UK from £1650 + VAT

BritOne Air installs air conditioning across the UK from £1650 + VAT for a standard single split wall-mounted system. That fixed starting price covers the air conditioning unit itself, labour by our own F-Gas certified engineers and every standard installation material — copper pipework and insulation, trunking, drain hose, isolator, cable, brackets and sealant — with no additional materials cost. Multi-split systems, long pipe runs, roof-level outdoor positions and new electrical circuits are priced transparently at survey, so the quote you accept is the price you pay.

Supply-only units, installation materials, copper pipe, trunking and professional HVAC tools are also stocked at our Chertsey trade counter, open Monday to Saturday, 8am – 5pm.

Get your fixed price — from £1650 + VAT F-Gas certified No hidden materials cost

Frequently asked questions

How much does commercial air conditioning installation cost?

Commercial air conditioning installation starts from £1650 + VAT for a single wall-mounted system, including the unit, labour and all standard materials. Ceiling cassette, ducted and VRF projects are priced from a free site survey, with a fixed written quote before any work begins.

Can you install out of hours to avoid disrupting our business?

Yes. Our in-house teams regularly work evenings, weekends and phased shifts in offices, retail units, restaurants and server rooms so trading and staff are not disrupted.

Do you handle the electrical and building works too?

We do. Isolators, dedicated circuits, containment, core drilling, roof and wall mounting, condensate routing and making good are all covered by one contractor and one guarantee.

Are you F-Gas certified for commercial refrigerant work?

Yes — every engineer is F-Gas certified and we are a registered refrigerant handling contractor. Certificate details are verified on request rather than published online.

Do you offer servicing and maintenance contracts?

Yes. Commercial systems require periodic servicing to keep warranty and F-Gas records valid. We offer planned maintenance visits and reactive callouts across the UK.

Get a fixed price for your commercial installation

Tell us about the space and we'll arrange a free site survey, then issue a fixed written quote — usually within 48 hours.

F-Gas certified engineers In-house installation teams