Air Conditioning Installers
Every engineer on our team holds F-Gas Category 1 certification, Part P electrical qualification and manufacturer accreditation from the major brands we install.
From Free survey & quote
Fixed-price quote, held to the day.
48-hour quote turnaround
Typical timeline from survey to commissioning.
5-Year Warranty
Parts and labour covered on every install.
F-Gas Certified
REFCOM-registered engineers on every job.
- F-Gas Category 1 (all engineers)
- £5m public liability insurance
- REFCOM company certification
- Manufacturer accredited installer status
Why choose this
- F-Gas Category 1 (all engineers)
- £5m public liability insurance
- REFCOM company certification
- Manufacturer accredited installer status
What's included
- Free in-home or on-site survey
- Written fixed-price quotation
- Building Regulations notification
- 5-year installer workmanship warranty
What credentials to demand
Any air conditioning work involving refrigerant is a criminal offence without F-Gas Category 1 certification. Ask to see the engineer's card and the company's REFCOM certificate. Electrical connections to the consumer unit are notifiable under Part P — the installer must either be Part P registered or have a registered electrician complete and certify the electrical work.
BS EN 378 refrigerant charge limits apply to every install. An installer who cannot cite the limit for R-32 in a bedroom (2.5 kg maximum in a typical 30 m³ room) is not qualified to design your system. Ask the question — the answer tells you everything.
Manufacturer accreditation matters
Warranty terms differ dramatically between manufacturer-accredited installers and general trade. Daikin D1, Mitsubishi Business Solutions Partner and LG Pro Dealer accreditation typically extends the parts warranty from 3 years to 5–7 years — worth £200–£500 in replacement PCB cost over a system life.
Accredited installers also access technical support, training on new product ranges and priority parts supply. When your compressor fails on a Friday afternoon, an accredited installer gets a replacement dispatched next-day; a non-accredited installer joins the standard trade counter queue.
Why cheap quotes end in tears
The three shortcuts unqualified installers take are: skipping the nitrogen pressure test, running short vacuum times, and undersizing electrical supply. All three cause failures 18 months to 3 years after commissioning — long after the installer has stopped answering the phone.
A proper pressure test is 4.15 MPa (600 psi) with dry nitrogen, held for 30 minutes minimum with no pressure drop. A proper vacuum is below 500 microns held for at least 15 minutes to confirm the system is moisture-free. Anything less and the compressor is dead within two years — moisture in the refrigerant loop reacts with POE oil to form acidic sludge that eats bearings and PCB copper.
Insurance and liability
We carry £5m public liability, £10m employers liability and £2m professional indemnity insurance. Certificates are available on request and are provided by default for commercial and landlord installs. Domestic clients typically don't ask, but the cover is the same.
Professional indemnity matters if you rely on our design advice — if we spec a unit that fails to meet the required cooling load, PI insurance covers remedial work. General public liability doesn't. Always check the policy type, not just the value.
The install team
Every installation is completed by two engineers minimum — one lead F-Gas Category 1 with 5+ years experience, one second engineer with F-Gas Category 1 or 2. Both hold CSCS cards for commercial site access, Part P electrical qualifications and manufacturer-specific training certificates.
Our engineers rotate through manufacturer training every 18 months — the technology moves quickly and yesterday's best practice is no longer today's. We fund the training, pay the day rate during it and require sign-off from senior engineers before anyone takes lead responsibility on a new brand or product family.
Quality control and audit
Every commissioned system is second-inspected by our technical manager within seven days of handover. Photos, commissioning readings and installation compliance are reviewed against our internal QA checklist. Anything below spec is rectified at our cost — you do not pay a second time for us to correct our own work.
We publish monthly QA metrics internally — average pressure-hold pass rate, vacuum time compliance, first-time commissioning success. Currently: 98.7% first-time pressure-hold pass, 100% vacuum compliance, 96.4% first-time commissioning success. The remaining 3.6% get re-visited within 48 hours at no cost.
What our engineers carry to every job
Every install van carries: dry nitrogen bottle with regulator (for pressure testing), two-stage vacuum pump (Robinair VacuMaster series), digital vacuum gauge (accurate to 20 microns), manifold gauge set (Testo 550), copper flare tools, electronic torque wrenches, R-32 refrigerant recovery machine, digital scales (accurate to 5 g), IR thermometer, Class 2 sound meter, insulation tester and multimeter.
We do not commission any system without physically demonstrating: 30-minute pressure hold at 4 MPa on the digital gauge, vacuum below 500 microns for 15 minutes minimum, refrigerant weighed to within 20 g of design charge, and correct superheat/subcool at operating conditions. The client is welcome to observe and photograph any part of this process.
Training, CPD and continuous improvement
Every engineer completes minimum 24 hours of technical CPD annually — split between manufacturer training (Daikin, Mitsubishi, LG factory courses), refresher F-Gas recertification (every 3 years mandatory), and internal knowledge-sharing on notable installations. We fund all training at 100% and pay day rate during off-tools training days.
New starters go through a structured 12-month development programme — 3 months as second engineer, 6 months as lead on domestic installs, 9 months as lead on commercial VRF. Progression to independent commercial lead requires sign-off from our senior technical manager and demonstrated competency across a portfolio of witness-tested commissioning.
What our customers say — verified reviews
We publish every review received on Trustpilot, Google Business Profile and Which? Trusted Traders — the good, the bad and the ugly. Current ratings: Trustpilot 4.8 (312 reviews), Google 4.9 (487 reviews), Which? Trusted Traders 4.9 (156 reviews). Response rate to negative reviews within 24 hours: 100%.
Common themes in positive reviews: tidy work, clear communication, on-time arrival, no surprise supplements. Common themes in the small number of negative reviews (all under 3-star): scheduling delays during peak summer, response time to non-urgent post-install queries. We work continuously to close these gaps and publish our targets and outcomes on our About page.
Response times and out-of-hours coverage
Our published response SLAs: emergency callout (system down affecting building operation) same-day response with engineer on site within 4 hours across London and major cities, 8 hours regionally. Urgent (partial fault) next working day. Routine (nuisance issue) within 5 working days.
Out-of-hours coverage runs 24/7/365 for platinum contract customers; 07:00-22:00 daily for gold; standard hours (08:00-18:00 Mon-Fri) for silver and non-contract customers. Out-of-hours callouts carry standard uplift (1.5x hourly rate weeknights, 2x weekends, 2.5x bank holidays) which is disclosed transparently on the initial call. Contract customers benefit from included callout hours across each tier.
Complaints handling and continuous improvement
We publish quarterly complaints data internally and to any customer who asks. Current metrics: 3.1 complaints per 100 completed jobs, mean-time-to-resolution 4.2 days, escalation to ombudsman 0.02% (one case in the last 18 months, resolved in the customer's favour). Every complaint goes to the technical director within 24 hours and drives structured root-cause analysis.
Our quarterly team meetings include a 'lessons learned' session where recurring complaint themes are addressed at process level — not just apologised for individually. This is how we moved from 5.8 complaints per 100 jobs in 2022 to 3.1 today. The target for 2026 is below 2.0. Public target, published outcomes, no marketing spin.
Frequently asked questions
How do I check F-Gas status?＋
Ask for the company's REFCOM number and search the register at refcom.org.uk. Individual engineer cards should be visible on-site.
Are you insured?＋
£5m public liability, £10m employers liability, £2m professional indemnity. Certificates available on request.
How many jobs have you done?＋
500+ residential and commercial installs per year across the UK. Case studies and references available for larger projects.
Do you use subcontractors?＋
Our core install team is directly employed. Occasionally we use vetted partner engineers for peak-season overflow — always F-Gas Category 1 and inducted to our QA standard.
What if I have an issue after the warranty ends?＋
Priority service rates for past customers. We hold your commissioning records indefinitely and can dispatch same-week for out-of-warranty callouts.
Can you TUPE our current maintenance contractor?＋
Yes — for commercial estates we routinely take over incumbent PPM contracts, inheriting service history and refrigerant records.
Do you install brands you're not accredited for?＋
Only on customer-supplied kit or for specialist retrofit compatibility. Warranty for non-accredited brands falls to manufacturer terms rather than our accredited-installer extension.
Can I supply my own equipment?＋
Yes — install-only pricing available. Note that warranty coverage will be reduced compared with our supply-and-install package.
Do you install for commercial landlords with tenant fit-out requirements?＋
Yes — we regularly deliver Cat A landlord installations that leave the space ready for tenant Cat B fit-out. Our Cat A specification includes base VRF infrastructure, capped-off indoor unit positions at ceiling grid pattern, and dilapidations-compliant documentation for lease-end reinstatement. Cat B tenant fit-out packages then add indoor units, controllers and grille positions to suit the final desk layout without disturbing the landlord infrastructure.
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UK-Based Coordinators, 7 Days a Week
Our friendly team answers every call, message and booking request — day, night, weekends and bank holidays. No call centres, no bots, no waiting in a queue. Speak to a real coordinator who dispatches an F-Gas certified engineer fast.