Air Conditioning Installations & Maintenance in Hampshire, London, Sussex and Surrey

At Rossair, we provide professional air conditioning installations and comprehensive heating and air conditioning maintenance services across Hampshire and the UK. With over 50 years of industry experience, we deliver energy-efficient and cost-effective climate control solutions tailored to your commercial, retail, and industrial spaces.

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01420 566822

Reliable Heating & Air Conditioning Solutions for Your Business

A well-installed air conditioning system is essential for maintaining comfort, productivity, and energy efficiency. Whether you need a new system for an office, retail space, or industrial facility, our expert engineers handle everything from system selection to final commissioning.

Professional Air Conditioning Installations

Our Air Conditioning Installation Services:

  • Tailored System Design – We assess your space to recommend the best system for optimal cooling and efficiency.
  • Expert Installation – Our certified engineers install air conditioning systems with minimal disruption to your business.
  • Energy-Efficient Solutions – We offer modern, eco-friendly systems that lower energy costs while ensuring optimal performance.
  • Smart Control Integration – Enhance efficiency with intelligent climate control and automation options.

Air Conditioning Services in Hampshire

If you’re looking for trusted air conditioning installations in Hampshire, Rossair is your go-to provider. We serve businesses across the region, ensuring they benefit from top-quality cooling solutions tailored to their specific needs. Whether you need a new system or an upgrade, our team ensures seamless service from start to finish.

Heating & Air Conditioning Maintenance

Regular heating and air conditioning maintenance is vital for extending the lifespan of your system, preventing breakdowns, and ensuring efficiency. Our planned preventative maintenance (PPM) services keep your system running smoothly, helping you avoid costly repairs and downtime.

Benefits of Our Maintenance Services:

  • Improved Energy Efficiency – Regular servicing keeps your system running optimally, reducing energy waste.
  • Extended System Lifespan – Preventative maintenance helps avoid premature replacements.
  • 24/7 Emergency Support – Our team is available round the clock for urgent repairs and breakdowns.
  • Regulatory Compliance – We ensure your HVAC system meets all industry safety and efficiency standards.

Why Choose Rossair?

  • 50+ Years of Expertise – Proven experience in air conditioning and HVAC services.
  • Certified Engineers – Our skilled team ensures high-quality installations and maintenance.
  • Customised Solutions – We tailor every service to your business needs.
  • Sustainable Practices – Energy-efficient systems to support your net-zero goals.

Get a Free Consultation Today

Ensure year-round comfort and efficiency with Rossair’s expert air conditioning and maintenance solutions.

Quick facts

Air conditioning installation - the facts

A structured summary of how Rossair delivers commercial air conditioning installation and maintenance across the UK.

Service
Air conditioning installation, service and maintenance
Founded
1973 (50+ years)
Coverage
Hampshire, London, Sussex, Surrey, UK-wide
Approved supplier
Daikin, Mitsubishi Electric, Samsung
Systems installed
Split, multi-split, VRF, VRV, chillers, AHUs, fan coil units
Standards
F-Gas, SFG20, CIBSE, Gas Safe, NICEIC
Sectors served
Commercial, retail, industrial, healthcare, education, FM, government
Emergency cover
24/7, 365 days
Offices
Alton (HQ), London (Aldgate)
Telephone
01420 566822
Frequently asked

Air conditioning installation - common questions

What is included in a commercial air conditioning installation?
A commercial air conditioning installation from Rossair covers site survey and load calculation, system selection, design, supply of the equipment, mechanical and electrical installation, refrigerant charging under F-Gas, commissioning, performance testing, and handover with a compliance pack. PPM cover can be folded into the contract from day one.
What types of air conditioning systems does Rossair install?
Rossair installs split systems, multi-split systems, VRF and VRV systems, chillers, air handling units (AHUs) and fan coil units across commercial, retail and industrial environments. As an approved supplier for Daikin, Mitsubishi and Samsung, we select the right system for the space, occupancy profile and energy targets.
How long does a commercial air conditioning installation take?
A small office split system can take 1-3 days. A typical retail or office VRF installation runs 2-6 weeks depending on size and access. Larger industrial or multi-floor installations are programmed against the build schedule. Rossair fits the installation programme around your operational hours - including out-of-hours and weekend work where the site cannot afford disruption.
Do I need F-Gas certification to have air conditioning installed?
You do not need certification yourself, but the company installing and servicing your equipment must hold F-Gas certification under EU 517/2014 (retained in UK law). Rossair holds F-Gas certification across all engineers handling refrigerant. Refrigerant handling, recovery, charging and disposal records are kept and supplied as part of the compliance pack.
What is the difference between split system, multi-split and VRF air conditioning?
A split system has one outdoor unit serving one indoor unit - simple, low cost, ideal for single rooms. A multi-split has one outdoor unit serving 2-5 indoor units - good for small offices. A VRF (variable refrigerant flow) system has one outdoor unit serving many indoor units with individual zone control, simultaneous heating and cooling, and the lowest energy cost per square metre - the standard for larger commercial fit-outs.
Do you offer maintenance contracts after installation?
Yes. Every Rossair installation can roll into a planned preventative maintenance (PPM) contract on day one. PPM cover includes SFG20-scheduled servicing, F-Gas leak checks, 24/7 reactive cover and named engineers. Same number, same engineers, year after year.
Which air conditioning brands does Rossair install?
Rossair is an approved supplier and installer for Daikin, Mitsubishi Electric and Samsung commercial air conditioning. We work with other manufacturers where specified by the design or by client preference, including LG, Toshiba and Panasonic.
Where does Rossair install air conditioning?
Rossair installs air conditioning across the UK with strongest presence in Hampshire, London, Sussex, Surrey and the South of England. We operate from two offices: Alton (Hampshire HQ, founded 1973) and London (Aldgate). Nationwide cover for multi-site clients.

If we’re not the right fit, we’ll tell you who is

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