Residential

Domestic Air Conditioning Installation

Professional domestic air conditioning installation for UK houses, flats and apartments — sized to your rooms, wired to your consumer unit and commissioned to BS EN 378 by F-Gas certified engineers.

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From: £1,500 per room
Timeline: 1 day for single room, 2–4 days multi-room
Warranty: 5 years parts & labour

Why choose this

Ultra-quiet 19 dB indoor units ideal for bedrooms and nurseries
Reverse-cycle heating with COP 4.0+ for year-round comfort
Neat pipework in white trunking or hidden first-fix where possible
5-year parts & labour warranty on Mitsubishi, Daikin, LG and Panasonic

What's included

Free in-home survey & heat-load calculation
Wall or floor-mounted indoor units
Outdoor condenser on brackets or ground feet
Dedicated fused spur from consumer unit
Nitrogen pressure test + vacuum + F-Gas commissioning
Building Regulations Part P & Part L notification

Who this domestic air conditioning installation service is for

We deliver domestic air conditioning installation for homeowners, landlords and tenants in houses, flats, apartments and HMOs across the UK. Typical projects sit in the 2.0–7.0 kW per room 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

Domestic installations typically use high-efficiency inverter wall-mounted splits for bedrooms and living rooms, multi-split systems for whole-house coverage, and discreet ducted units for properties where visible indoor equipment is undesirable. For flats with no external wall access we specify internal water-cooled condenser units or approved through-wall solutions that comply with leasehold restrictions.

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

Domestic Air Conditioning Installation typically starts at £1,500 per room 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 for single room, 2–4 days multi-room. We quote fixed prices — nothing is added on site without written change control.

A 2.5 kW inverter split cooling a bedroom for eight hours uses roughly 3.6 kWh (about £1.10 at 30 p/kWh). In heating mode the same unit delivers 3–4 kWh of heat per 1 kWh of electricity, making it cheaper than gas heating in mild weather and competitive with oil or direct electric. 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

Our domestic range includes Mitsubishi Electric (MSZ-LN and MSZ-AP series), Daikin (Emura, Stylish and Perfera), Panasonic (Etherea) and LG (Artcool Gallery). Each is selected for low noise, high efficiency and strong heat-pump performance in UK winter conditions.

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.

Flats, apartments and leasehold properties

Installing air conditioning in a flat requires careful attention to leasehold restrictions, freeholder consent and structural considerations. For leasehold flats we prepare a full method statement and risk assessment for the freeholder or managing agent before work begins, covering core-drill locations, refrigerant volumes, fire-stopping and external bracket loading.

Where the lease prohibits external condensers on balconies or walls, we offer internal water-cooled condenser systems that vent warm air through the kitchen extractor route or a dedicated louvre. These systems are slightly less efficient (SEER around 5.5 versus 7.0+ for standard splits) but they keep the installation fully internal and freeholder-compliant. For permitted external mounting we use low-vibration brackets with acoustic pads and ensure condensers sit below any neighbour's window line where possible.

Planning permission and permitted development

Most domestic air conditioning installations are permitted development and do not require planning permission, provided the outdoor unit is under 0.6 m³, more than 1 m from any boundary and not on a principal elevation facing a highway. Listed buildings and conservation areas always require listed building consent — we prepare the heritage statement and M&E drawings for your conservation officer.

Flats and maisonettes do not benefit from permitted development rights for air conditioning — every installation needs either prior approval or full planning depending on the borough. We handle the pre-application enquiry, drawing pack and planning submission as a standard part of our flat-installation service. Typical planning turnaround is 8–12 weeks; prior approval is faster at 4–6 weeks but requires neighbour consultation.

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 domestic air conditioning installation cost?＋

Fully-fitted prices start at £1,500 per room. 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 for single room, 2–4 days multi-room

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 I need my landlord's permission?＋

Yes — for leasehold flats and rented properties you need written consent from the freeholder or landlord before we drill walls or mount external equipment. We provide the full method statement and risk assessment they need.

Can I install air conditioning in a flat with no outside wall?＋

Yes — internal water-cooled condenser systems are designed exactly for this scenario. They are slightly less efficient than standard splits but keep the installation fully internal and landlord-compliant.