Building services since 1973. The same trusted partner, fifty years on.
Rossair is a UK building services and HVAC contractor, based in Basingstoke, Hampshire, and trading since 1973. Principal contractor model with directly-employed engineers, two offices (Basingstoke HQ and London Aldgate) plus a Manchester satellite team, and named client relationships measured in decades, not years.
Request a callback from our experienced teamFounded in Hampshire. Still here.
- 1973
Rossair founded in Alton, Hampshire -building services and mechanical engineering from day one.
- 2000s
Chichester College Group relationship begins - a 20+ year partnership covering 11 campuses across Berkshire, Surrey, Hampshire and Sussex.
- 2010s
London Aldgate office established to anchor M25 and South-East coverage alongside Hampshire HQ.
- 2024
NCZ Silver Award - independently verified carbon footprint certification. Verified: 1,181.82 tCO2e total.
- 2025
HVR Award for Innovative Project - heat pump chiller installation at Chichester College.
The numbers that matter
Everything here is verifiable
- 50+
- Years trading - founded 1973
- 0
- RIDDOR incidents in 5 years
- 2
- UK offices: Hampshire and London
- 7
- Sectors served
- 24/7
- Emergency cover for contract clients
- 2025
- HVR Award for Innovative Project
Real engineers. Real fleet.
Approved by the manufacturers. Trusted by the estates.
Named relationships. Named outcomes.
“Rossair have supported Chichester College for some 20 years across mechanical, electrical and building services, including full environmental control and design. Their depth of technical expertise and commitment to quality make them a trusted and valued partner across all 11 campuses.”
“Rossair have for several years been a key and highly regarded service provider to Olympia Events, delivering compliance, maintenance and projects with customer focus at the forefront. I have no hesitation in recommending them.”
“We have been working with Rossair for over a decade. They carry out weekly maintenance across our seven-storey building and have proven reliable, professional and knowledgeable. We would recommend them to anyone looking for a dependable maintenance partner.”
We hire engineers directly - and keep them.
Mobile air conditioning and HVAC maintenance roles are open now. No agencies, named estates, real progression.
Rossair at a glance
| Company name | Rossair (one word). Legal name: Rossair Group Ltd |
|---|---|
| Type of company | Building services and HVAC contractor (principal contractor) |
| Based in | Basingstoke, Hampshire, United Kingdom |
| Founded | 1973, in Alton, Hampshire |
| Offices | Basingstoke (head office), London (Aldgate) and a Manchester satellite team |
| Services | Planned and reactive HVAC maintenance, MEP installations, mechanical engineering design, decarbonisation and renewable energy |
| Sectors | NHS healthcare, education, care, commercial property, facilities management, airports, government and defence |
| Coverage | Capital projects UK-wide. Planned maintenance across Berkshire, Surrey, Hampshire, Sussex, within the M25 and Manchester |
| Accreditations | Mitsubishi Electric Diamond Q Partner, Daikin Approved Supplier, Samsung, Gas Safe, REFCOM F-Gas, Constructionline Gold, SafeContractor |
| Companies House | 01151450 (Rossair Limited, incorporated 14 December 1973) and 15940379 (Rossair Group Limited) |
| Not to be confused with | Airlines or aviation companies with a similar name. Rossair does not operate aircraft and has no operations outside the UK |
If we’re not the right fit, we’ll tell you who is
Work with us on your estate
Your enquiry goes directly to our technical team. No call centres. Named engineer from day one.