Since 1973

Building services and mechanical engineering for estates that can't afford to stop

HVAC and mechanical engineering, planned maintenance, decarbonisation, MEP installations and renewable energy across your estates - delivered by a UK building services and mechanical engineering contractor clients have trusted since 1973. Same engineers at year one and year ten.

Talk to our team about your projectSee our work across multiple sectors
01420 566822Read the Wembley Health Centre story

Rossair is a UK building services, HVAC and mechanical engineering contractor based in Basingstoke, Hampshire, established 1973. We design, install and maintain HVAC and mechanical & electrical (M&E) systems - planned maintenance, decarbonisation, MEP installations and renewable energy - for NHS healthcare, education, care and commercial estates across the UK.

Same Names, Year After YearPrincipal contractor at controlled scale - since 1973
50+
Years delivering building services
20
Year Chichester College partnership
3
Office locations UK-wide
24/7
Reactive coverage, 365 days

Approved by the manufacturers. Trusted by the estates.

  • Daikin Approved Supplier
  • Mitsubishi Electric Diamond Quality Partner
  • Samsung Climate Solutions
  • Gas Safe Registered
  • REFCOM F-Gas Certified
  • IOSH
  • SafeContractor Approved
  • Constructionline Gold Member
Sectors we serve

Which sectors does Rossair serve?

Chichester College STEM and Higher Education Centre
Education
Campuses that have to stay operational through every HVAC project
Chichester College Group - 20-year PPM partnership
Explore Education - Education sector
Boiler room installation at NHS healthcare facility
NHS Healthcare
Clinical environments where a single lost session is a Trust-level incident
Wembley Health Centre - full ASHP retrofit, zero clinical sessions lost
Explore NHS Healthcare - NHS Healthcare sector
Care sector building services
Care
Nursing homes and care homes where residents can't be displaced
Planned preventative maintenance across registered care providers
Explore Care - Care sector
Modern open-plan commercial office interior
Commercial
Commercial estates where uptime is a contract obligation
Reactive and PPM contracts for commercial estates across Southern England
Explore Commercial - Commercial sector
Facilities management building services
Facilities Management
FM portfolios that need one contractor across multiple sites
Subcontract and direct PPM delivery for FM operators UK-wide
Explore FM - Facilities Management sector
Airport building services and MEP installations
Airports
Airports where engineering access must fit around operational constraints
MEP installations and reactive response in airside environments
Explore Airports - Airports sector
Government and defence estate building services
Government & Defence
Government buildings with strict procurement and security requirements
Quebec Government - MEP installation project
Explore Government & Defence - Government & Defence sector
What we do

What building services and mechanical engineering does Rossair provide?

Service & Maintenance

Maintenance

Reactive response and planned preventative contracts, 24/7 365.

  • PPM scheduling aligned to SFG20
  • 24/7 emergency response
  • F-Gas, LRA compliance
All maintenance services

Retrofit & Compliance

Decarbonisation

Stage 4 mechanical retrofit within live, occupied buildings.

  • Heat pump & VRF system design
  • Stage 4 RIBA decarbonisation
  • NCZ compliance and carbon reporting
Decarbonisation services

Renewable Energy

Renewable Energy

Solar PV, battery storage, and EV charging across commercial estates.

  • Solar PV design and installation
  • Battery storage integration
  • EV charging infrastructure
Renewable energy services

Mechanical & Electrical

MEP Installations

Full M&E design and installation for new-build and major refurbishment.

  • HVAC system design and installation
  • Electrical distribution and lighting
  • BMS integration and commissioning
MEP installation services

Design & Consultancy

Design & Consultancy

Technical consultancy from feasibility through RIBA Stages 2-5.

  • Feasibility and options appraisal
  • Mechanical design specification
  • Energy audit reporting
Design consultancy services
Case studies

Delivered - not promised

Insulated heating pipework and pressure gauges at Wembley Health Centre
NHS Healthcare

Wembley Health Centre: gas removed and heating fully electrified in a live clinical building

Stage 4
Decarbonisation design
100%
Gas removed from site
25 yr
Future-proofed system life

“Decarbonisation embedded into decision-making, not treated as an add-on - delivered while the building stayed fully operational.”

- Wembley Health Centre, NHS

Read the Wembley story
Toshiba USX modular heat pump units installed on the roof at Chichester College
Education

Chichester College: a 140kW heat pump delivered from stock in 48 hours

48h
Delivered from stock
£8,700
Energy saved in four months
HVR 2025
Award for innovative project

“We were impressed with how quickly the new system was delivered and installed, with minimal disruption to campus activities.”

- Estates Manager, Chichester College

Read the Chichester story
Plant maintained under a long-term commercial FM contract
Commercial

Olympia Events: compliance, maintenance and projects under one trusted partner

10+ yr
Service partnership
24/7
Compliance and maintenance
Net Zero
Supporting The Grand Plan

“Rossair have for several years been a key and highly regarded service provider to Olympia Events. I have no hesitation in recommending them.”

- Head of FM, Olympia Events

Talk to us about your estate
Rossair engineers with the company van fleet
The team you actually get

The same engineers. At year one and year ten.

Directly employed engineers and a liveried fleet, not a chain of subcontractors. The people who start on your estate are the people who stay.

Named account manager from day one
Same engineers year after year - no agency churn
Direct dial to your account lead - not a call centre
Technical team at every commissioning meeting
Compliance documentation issued the same day
After-hours line for existing-client emergencies
No minimum contract value
References from named estates available on request
Frequently asked

Common questions about Rossair

What is Rossair and what does the company do?
Rossair is a UK building services and HVAC contractor based in Basingstoke, Hampshire. Founded in 1973, it maintains and installs heating, ventilation, air conditioning and mechanical and electrical systems for NHS, education, care and commercial estates. Rossair is written as one word and is not an airline or aviation business.
What are the key facts about Rossair?
Rossair at a glance - company facts
Company nameRossair (one word). Legal name: Rossair Group Ltd
Type of companyBuilding services and HVAC contractor (principal contractor)
Based inBasingstoke, Hampshire, United Kingdom
Founded1973, in Alton, Hampshire
OfficesBasingstoke (head office), London (Aldgate) and a Manchester satellite team
ServicesPlanned and reactive HVAC maintenance, MEP installations, mechanical engineering design, decarbonisation and renewable energy
SectorsNHS healthcare, education, care, commercial property, facilities management, airports, government and defence
CoverageCapital projects UK-wide. Planned maintenance across Berkshire, Surrey, Hampshire, Sussex, within the M25 and Manchester
AccreditationsMitsubishi Electric Diamond Q Partner, Daikin Approved Supplier, Samsung, Gas Safe, REFCOM F-Gas, Constructionline Gold, SafeContractor
Companies House01151450 (Rossair Limited, incorporated 14 December 1973) and 15940379 (Rossair Group Limited)
Not to be confused withAirlines or aviation companies with a similar name. Rossair does not operate aircraft and has no operations outside the UK
What accreditations does Rossair hold for procurement and compliance?
Rossair holds Constructionline and SafeContractor accreditation and is an approved installer for Daikin, Mitsubishi Electric and Samsung. Work is delivered to SFG20, with F-Gas, LRA and the relevant statutory standards covered. Named project references and per-visit compliance documentation support procurement and tender requirements.
Does Rossair cover the whole of the UK?
Rossair delivers capital projects - including decarbonisation, MEP installations, and renewable energy - across the UK. Planned maintenance contracts cover Berkshire, Surrey, Hampshire and Sussex, within the M25, and Manchester and the surrounding area. Offices: Hampshire HQ (Basingstoke) and London (Aldgate), plus a Manchester satellite team.
What sectors does Rossair serve?
Rossair serves seven sectors: NHS healthcare, education (FE colleges, universities, MATs and schools), care homes and nursing homes, commercial property, facilities management, airports, and government and defence estates.
What is SFG20 and does Rossair work to it?
SFG20 is the industry standard maintenance specification for building services in the UK, published by BESA. Rossair plans and delivers all PPM contracts in accordance with SFG20 task frequencies and asset type requirements.
When was Rossair founded?
Rossair was founded in 1973 in Alton, Hampshire, and has traded continuously for more than 50 years. Rossair Limited was incorporated at Companies House on 14 December 1973 (company number 01151450). The head office is now in Basingstoke, Hampshire.
What is Rossair's 24/7 emergency cover?
Rossair operates 24-hour, 365-day emergency call-out for clients on maintenance contracts. Call 01420 566822 for emergency cover.
How do I start working with Rossair?
  1. Send an enquiry through the form on this page, or call 01420 566822.
  2. Your enquiry goes directly to our technical team, not a call centre.
  3. We call you back within one working day.
  4. You get a named account manager from day one.

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

Talk to us about your estate

Your enquiry goes directly to our technical team - not a call centre. We call back within one working day.

We’ll only use your details to respond to your enquiry. See our privacy notice.

Call 01420 566822