Aircon · UK

Aircon Installation

Aircon installation for UK homes and businesses — quiet inverter splits, multi-split systems, ducted whole-home cooling and commercial VRF. F-Gas certified engineers, fixed-price quotes, manufacturer warranty registered on the day of commissioning.

Request a quote See pricing

From: £1,500 per indoor unit
Timeline: 1 day single split — 6 weeks commercial VRF
Warranty: 5 years parts & labour

Why choose this

F-Gas company certificate held since 2009
Same-week surveys inside the M25, 7–14 days nationally
Fixed-price quotes with no on-site supplements
5-year parts & labour manufacturer warranty on tier-1 brands
Tidy first-fix pipework where accessible, trunking elsewhere

What's included

Free survey and heat-load calculation
Wall, ceiling, floor or ducted indoor unit selection
Outdoor condenser on brackets or ground feet
Dedicated fused spur from consumer unit (Part P notified)
Nitrogen pressure test, vacuum and F-Gas commissioning
Warranty registration and handover on the day

Who this aircon installation service is for

We deliver aircon installation for UK homeowners, landlords, tenants, small businesses, retail units and commercial estates searching for aircon installation. Typical projects sit in the 2.0 kW single-room to 500 kW+ VRF band, and every scheme is designed by an F-Gas certified engineer against a full CIBSE Guide A heat-load calculation — never a rule-of-thumb watts-per-square-metre guess.

We cover the whole UK from London-based engineering hubs, with same-week surveys inside the M25 and 7–14 day lead times nationally. All work is delivered by directly-employed engineers rather than subcontractors, so the person who quotes your job is accountable for how it is installed and commissioned.

System types we recommend

"Aircon" is the common shorthand for air conditioning and covers the same equipment classes: single-split wall units for one room, multi-split systems that share one condenser between multiple rooms, ducted units that hide the indoor equipment in the ceiling or loft, and commercial cassette or VRF platforms for offices and larger buildings. We install and commission every class — the design drives the equipment choice, not the other way around.

Every specification is written against your actual building fabric, occupancy pattern and electrical capacity. We do not resell a single manufacturer — the design drives the equipment choice, not the other way around. If your incoming supply is constrained, we flag it at survey and offer a phased approach or a load-shedding controller rather than pretending the problem does not exist.

The survey, design and installation programme

A senior engineer attends site within 3–5 working days of enquiry. The survey covers heat gains (fabric, solar, occupancy, equipment), electrical capacity, condenser positioning, structural loading, acoustic constraints to neighbours, drainage routes and any planning/landlord constraints. Photos, measurements and load calculations feed into a written fixed-price proposal within 48 hours.

Once awarded, we produce a full drawing pack — pipe routes, electrical schedule, condenser structural loading, refrigerant volume and BS EN 378 risk assessment. Installation runs to a published programme with daily photo updates. Commissioning follows BSRIA BG 49 with a full test-and-balance report, an F-Gas record and manufacturer warranty registration on the day of handover.

Costs, timeline and running expenses

Aircon Installation typically starts at £1,500 per indoor unit for a compact single-zone scheme. Multi-zone and specialist projects scale with equipment tonnage, condenser positioning complexity and any out-of-hours working requirement. Programme duration is 1 day single split — 6 weeks commercial VRF. We quote fixed prices — nothing is added on site without written change control.

A 2.5 kW aircon unit running 8 hours a day uses roughly 2.5 kWh (75p at 30 p/kWh) on cooling duty. Used as a heat pump it delivers 3.5–4.5 kW of heat per 1 kW of electricity — cheaper than gas heating in mild weather and dramatically cheaper than direct electric or oil. Modern R-32 inverter equipment routinely delivers seasonal efficiency ratings (SEER) between 6.5 and 8.5, which is 30–50% better than the R-410A systems installed a decade ago. On heat-pump duty, coefficients of performance (COP) sit between 3.5 and 4.5 in UK conditions — comfortably ahead of gas heating on marginal-cost pence-per-kWh once carbon pricing is factored in.

Compliance, warranties and aftercare

Every installation is notified under Building Regulations Part P (electrical) and Part L (energy) where applicable, and lodged with the appropriate competent-person scheme. Systems containing 5 tCO₂e or more of F-Gas refrigerant require statutory annual leak checks under Regulation EC 517/2014 — we hold the F-Gas company certificate and can act as your Responsible Person, keeping records for HMRC and Environment Agency inspection.

Equipment carries a 5-year manufacturer parts warranty (compressor included) when installed by an accredited engineer. We register the warranty on the commissioning day so there is nothing for you to file. Our installation workmanship carries a 12-month cover-all warranty, and PPM service plans start at £110 per outdoor unit per year — sufficient to preserve manufacturer cover and catch drift before it becomes downtime.

Brands we install and why

Full accredited range across Mitsubishi Electric, Daikin, Panasonic, Toshiba, Fujitsu, LG, Samsung, Mitsubishi Heavy Industries, Midea and Gree. Domestic installs default to Mitsubishi MSZ-AP or Daikin Perfera for value, MSZ-LN Designer or Daikin Emura for premium. Commercial defaults to Daikin VRV 5 or Mitsubishi City Multi for VRF; Toshiba SMMSe where value engineering is a hard constraint.

All refrigerant work uses R-32 (GWP 675) as standard, with R-454B (GWP 466) available on request for future-proofing against the F-Gas phase-down schedule. We steer clients away from R-410A (GWP 2088) for any new install — the refrigerant is being progressively withdrawn from supply and top-up costs will rise sharply between 2026 and 2030.

Working around your operation

Downtime is the hidden cost of any air conditioning project. We routinely deliver work in evening slots (18:00–02:00), Sunday shutdowns and staged week-by-week phasing so your day-to-day operation continues unaffected. Overnight and weekend working commands a modest 10–20% uplift which we itemise transparently at quotation.

Dust management, negative-pressure containment and daily photo close-out reports are standard for any works in occupied premises. Where a phased approach is chosen, we deliver temporary cooling (portable spot coolers or hire chillers) to bridge critical zones during the transition — priced separately so you can choose whether the resilience is worth the line item.

Is "aircon" different from "air conditioning"?

No — "aircon" is Australian and South-East Asian shorthand for air conditioning that has crossed into UK usage over the last 15 years. The equipment is identical: an outdoor condenser containing a compressor and heat-exchanger coil, an indoor unit containing an evaporator coil and fan, and copper refrigerant pipework and control wiring between them. Everything we call "aircon installation" is exactly the same as what a specification engineer or M&E consultant would call "comfort cooling installation" or "HVAC installation" for the same duty.

What matters more than the label is the design approach. Aircon installations that are sized on rule-of-thumb (100 watts per m², or picking a unit off a hardware-store shelf) short-cycle, waste electricity and disappoint on comfort. Aircon installations that are sized on a CIBSE Guide A heat-load calculation — accounting for fabric U-values, glazing area and orientation, occupancy, equipment gains and infiltration — deliver stable comfort at the lowest possible running cost. Every aircon installation we quote is designed to CIBSE, not to a guess.

The steps from aircon quote to commissioned system

Step one is a free site survey — a senior engineer visits within 3–5 working days of enquiry, takes room measurements, checks the electrical supply capacity, walks the condenser location and photographs the pipe route options. Step two is the written proposal within 48 hours — a fixed price broken down by equipment, labour, electrical works and consumables, with a proposed programme.

Step three, once you appoint us, is the drawing pack — pipe routes, electrical schedule, condenser structural loading and refrigerant volume calculation. Step four is installation, which for a single-room domestic system is one day for two engineers. Step five is commissioning — nitrogen pressure test to 30 bar for 60 minutes, evacuation to below 500 microns, refrigerant weight-charge and full performance verification. Step six is handover — warranty registered on the day, Part P certificate emailed within 48 hours, controller demonstration and a written O&M pack.

Why choose us for this work

We are F-Gas certified installers with directly-employed engineers, fully insured to £10m public liability and £5m professional indemnity. Every project comes with a fixed price, a written programme, a photo record and a 5-year warranty on equipment plus 12 months on workmanship. We publish real client references on request — not gated behind a form.

Request a quote online and we will book a site survey. Same-week surveys inside the M25, 7–14 day lead times nationally, and a qualified engineer attending the survey rather than a scripted call-centre operator.

Frequently asked questions

How much does aircon installation cost?＋

Fully-fitted prices start at £1,500 per indoor unit. Multi-zone and specialist projects scale with equipment tonnage and installation complexity. All quotes are fixed price — no on-site supplements.

How long does the installation take?＋

1 day single split — 6 weeks commercial VRF

Do you handle Building Regulations sign-off?＋

Yes. Part P electrical work is notified via our NAPIT/NICEIC scheme and Part L energy compliance is documented in the commissioning pack. You receive certificates on the day of handover.

What refrigerant do you use?＋

R-32 as standard (GWP 675). R-454B (GWP 466) is available on request for maximum future-proofing against F-Gas phase-down. We do not install R-410A for new schemes.

Do you offer service and maintenance plans?＋

Yes — PPM plans start at £110 per outdoor unit per year and include filter cleans, coil disinfection, drain-line flush, refrigerant pressure check and electrical inspection. Statutory F-Gas leak checks are included on qualifying systems.

What warranty applies?＋

5-year manufacturer parts warranty on equipment (compressor included) plus 12 months workmanship warranty on our installation. Annual servicing preserves manufacturer cover.

Do you install aircon in flats and apartments?＋

Yes — with freeholder or landlord written consent. We prepare the method statement and risk assessment your freeholder needs, and where the lease prohibits external condensers we offer internal water-cooled alternatives.

How quickly can you install aircon?＋

Same-week surveys inside the M25. Typical installation date is 2–3 weeks from appointment for domestic, 4–6 weeks for commercial — driven by drawing pack sign-off and equipment lead time.