Air Conditioning
High Path Air Conditioning — over 40 years of expert installation, servicing and repairs across Surrey, Hampshire & London.
How Does Air Conditioning Work?
Every system has two parts — an indoor unit and an outdoor unit — interconnected by refrigerant pipes and a power supply, neatly run through trunking for a clean, discreet finish.
Two parts — an indoor unit and outdoor unit — connected by pipes and trunking.
The Indoor Unit
Mounted on your wall, ceiling or hidden in the loft, the indoor unit quietly distributes conditioned air into your room. It contains the evaporator coil and fan — blowing cool air in summer or warm air in winter.
Wall, ceiling or loft-mounted — quietly blows cool or warm air into your room.
The Outdoor Unit
Positioned outside on a wall bracket, flat roof or ground, the outdoor unit expels heat in cooling mode or absorbs it in heating mode. Modern inverter compressors adjust speed to save energy — all systems are heat pumps, heating in winter too.
Sits outside on a bracket, roof or ground. Expels heat in summer, absorbs it in winter — all systems heat and cool.
Pros of Air Conditioning
Modern air conditioning does more than cool — it saves energy, runs silently, and blends in with the building.
Energy Efficient
Today's inverter-driven systems use up to 60% less energy than older models. Variable-speed compressors adjust output to match demand, so you only pay for the cooling or heating you actually need. Many units achieve an A+++ energy rating — keeping bills low and carbon footprint smaller.
Up to 60% less energy than older models. A+++ rated units keep bills low.
Year Round Comfort
Every system we install provides both cooling and heating. In summer your rooms stay cool and dehumidified; in winter the same unit delivers efficient warmth at a fraction of the cost of conventional heating. One system, every season.
Cooling in summer, heating in winter — one system, every season.
Aesthetic Solutions
Ducted and concealed systems hide completely behind walls and ceilings — no visible units, just discreet grilles that blend into your interior.
Ultra Low Noise
Low noise units and bespoke systems designed to operate completely noise and draft free.
Why Choose Us
Marco Pasquariello
Excellent service from Rob and his team. We run a professional recording studio which relies on efficient air con around the clock. We've had issues with our original installation (from another company) which have been fixed promptly by Rob and his team. Fair pricing and great service!
Beau Thomas
Working with Rob and his boys was absolutely painless and the results were so much more than I hoped for. My studio needed a very awkward and demanding installation which he delivered and some. His regular servicing and maintenance has kept my studio in tip top shape...
Nici Leonard
We have used High Path Airconditioning (owner Rob Halligan) for approximately 15 years to service our air conditioning at our offices. Over the years we have found them to be very professional in both dealing with the servicing of works...
Chad Murray
Tried several different HVAC companies before finally meeting Rob Halligan and his team at High Path Air Conditioning. Great work for a fair price and a really lovely crew. Always a pleasure to have them working on a job for us...
Chris Burgess
Thanks to Rob and his team who were a pleasure to deal with from start to finish and we're very pleased with the end result. We had an air conditioning unit installed at home and they quickly came up with a plan...
Ant Vander West
Always an unbelievable service from Rob and the team. I have used them across 4 sites and would recommend them for all air conditioning needs. Always incredibly trustworthy and great value for a high quality job.
Angelo Asole
Amazing service start to finish, clear pricing great work.
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Family Business, 40+ Years
Installation, servicing & repairs across Surrey, Hampshire & London.
About Us
7 Year Warranty – Official dealer, one of only a handful in the UK.
Our Services
Air Conditioning Installation
We start with a free site survey, recommend the right system and provide a fixed-price quote. Our F-Gas certified engineers handle everything — positioning, pipework, electrics and commissioning.
Most single-room installations are completed in one day. We install all major brands to manufacturer specs.
Free survey, fixed-price quote. F-Gas certified engineers — most installs done in one day.
Learn more about installation →
Air Conditioning Maintenance
Regular servicing keeps your system efficient and extends its lifespan. We deep-clean filters and coils, check refrigerant levels, inspect electrics and test performance.
Annual servicing is recommended for homes. Commercial clients can take advantage of scheduled maintenance contracts with priority callout.
Annual servicing keeps your system efficient. We clean filters, check refrigerant and test performance.
View maintenance & service plans →
Air Conditioning Repairs
Whether it's stopped cooling, leaking water or flashing error codes — we diagnose and fix faults fast. We carry common parts and refrigerant, so most repairs are done on the first visit.
We repair all brands and types. If another company installed it, we can still fix it.
Fast fault diagnosis. We carry parts and fix most issues on the first visit — all brands.
Book a repair or emergency callout →
Silent Air Conditioning
Our systems achieve NR20 — a noise level so low it's imperceptible to the human ear. We specialise in bespoke-designed silent installations for bedrooms, studios, therapy rooms and noise-sensitive spaces.
Using premium Mitsubishi Heavy Industries units and vibration-dampened techniques, every system is individually designed to be completely noise and draft free.
Our systems achieve NR20 — imperceptible noise. Specialist bespoke-designed systems for bedrooms, studios and quiet spaces.
Explore silent systems →Ready to Get Started?
Get a free, no-obligation quote for your air conditioning project.
Get a Free QuoteAir Conditioning FAQ
Answers to the most common questions about air conditioning systems, installation and running costs.
A single-room wall mounted air conditioning system typically costs from £1,800 fully installed, depending on the unit size and complexity of the installation. Multi-room systems cost more but are cheaper per room. We provide fixed-price quotes after a free survey — no hidden costs.
Modern air conditioning is surprisingly affordable to run. A typical 3.5kW wall unit costs around 10–15p per hour in cooling mode. In heating mode, air conditioning is 3–4 times more efficient than electric heaters because it moves heat rather than generating it. Annual running costs for a bedroom unit used regularly are typically £50–£150.
Most single-room air conditioning installations are completed in one day. The process includes mounting the indoor unit, positioning the outdoor unit, running refrigerant pipework, connecting electrics and commissioning the system. Multi-room and commercial installations typically take 2–3 days.
In most cases, residential air conditioning doesn't need planning permission under permitted development rules. However, listed buildings, conservation areas and some leasehold properties may have restrictions. For commercial properties, planning may be needed for external units. We advise on requirements during your survey.
We recommend servicing your air conditioning system at least once a year. Regular maintenance keeps efficiency high, prevents breakdowns, maintains healthy air quality and extends the life of the equipment. Commercial systems and those used heavily may benefit from twice-yearly servicing. F-Gas regulations also require regular leak checks on systems containing refrigerant.
Modern air conditioning systems are very quiet. Premium wall units operate at 19–22dB on their lowest setting — quieter than a whisper and virtually inaudible. Even on higher settings, most indoor units stay below 40dB. We specialise in silent air conditioning installations for bedrooms, studios and noise-sensitive environments.
Yes, almost any room can have air conditioning installed. The indoor unit goes on an internal wall, and refrigerant pipework is routed through the wall to the outdoor unit. Even rooms without an external wall can be served — we route pipework through lofts, voids or along discrete external trunking. We'll show you the best options during a free survey.