Specialist AHU refurbishment across critical environments
From hospitals and retail stores to secure government estates, AHS Specialist Services delivers air handling unit refurbishment and upgrade solutions that improve performance, reduce energy consumption, and extend asset life with minimal disruption.
Our Sectors
Healthcare
Specialist AHU refurbishment in live healthcare environments
We deliver refurbishment and upgrade solutions for AHUs within hospitals and clinical environments, working in live areas where system downtime, access and compliance are critical. Our approach focuses on improving performance, compliancy and supporting decarbonisation, while maintaining continuity of service.
We deliver refurbishment and upgrade solutions for AHUs within hospitals and clinical environments, working in live areas where system downtime, access and compliance are critical. Our approach focuses on improving performance, compliancy and supporting decarbonisation, while maintaining continuity of service.
Key Challenges We Address
- HTM compliance improvement within existing AHU casework
- Minimising disruption to critical services and wards where possible
- Limited access and complex plantroom constraints
Typical Scope of Works
- AHU condition and performance surveys
- HTM compliance improvement upgrades
- EC fan upgrades with energy validation
- Heating and frost coil replacement or upgrade to lower temperatures
- Small works, repairs and ongoing maintenance support
Keep Critical Healthcare Environments Running
Specialist AHU upgrades delivered safely within live hospitals, with minimal disruption to patient care.
Retail
Specialist AHU refurbishment for occupied retail environments
We deliver refurbishment, upgrade, and decarbonisation solutions for AHUs serving retail environments, helping clients reduce operational costs, improve energy efficiency, and extend equipment life expectancy while minimising disruption to trading hours and customers.
We deliver refurbishment, upgrade, and decarbonisation solutions for AHUs serving retail environments, helping clients reduce operational costs, improve energy efficiency, and extend equipment life expectancy while minimising disruption to trading hours and customers.
Key Challenges We Address
- Minimising disruption within live trading environments
- Improving energy efficiency and supporting decarbonisation targets
- Extending the life of existing AHUs and reducing capital replacement costs
Typical Scope of Works
- AHU condition and performance surveys
- EC fan upgrades with energy validation
- Heating and cooling coil upgrades including heat pump conversions
- Damper, filter, and casework refurbishment works
- Estate-wide refurbishment and lifecycle upgrade projects
Keep Retail Environments Running
Specialist AHU upgrades delivered safely within live retail environments.
Commercial Offices
Specialist AHU refurbishment for occupied commercial buildings
We deliver refurbishment, upgrade, and decarbonisation solutions for AHUs serving commercial office environments, helping clients improve ventilation performance, occupant comfort, and system reliability while minimising disruption to tenants and day-to-day building operations.
We deliver refurbishment, upgrade, and decarbonisation solutions for AHUs serving commercial office environments, helping clients improve ventilation performance, occupant comfort, and system reliability while minimising disruption to tenants and day-to-day building operations.
Key Challenges We Address
- Completing works within restricted shutdown periods
- Maintaining occupant comfort and operational continuity
- Improving resilience, reliability, and ventilation performance
Typical Scope of Works
- AHU condition and performance surveys
- EC fan upgrades and fan wall conversions
- Heating and cooling coil upgrades including heat pump conversions
- Resilience and redundancy improvements for critical systems
Keep Commercial Office Environments Running
Specialist AHU upgrades delivered safely within occupied commercial buildings.
Education
Specialist AHU refurbishment and support for education environments
We deliver maintenance, reactive repairs, refurbishment, and decarbonisation solutions for AHUs serving schools, colleges, and universities, helping clients improve system reliability, energy efficiency, and ventilation performance while planning works around academic schedules and holiday shutdowns.
We deliver maintenance, reactive repairs, refurbishment, and decarbonisation solutions for AHUs serving schools, colleges, and universities, helping clients improve system reliability, energy efficiency, and ventilation performance while planning works around academic schedules and holiday shutdowns.
Key Challenges We Address
- Completing projects during school and university holiday periods
- Maintaining reliable ventilation within occupied teaching environments
- Improving energy efficiency and supporting decarbonisation objectives
Typical Scope of Works
- Planned AHU maintenance and condition surveys
- Reactive repair and emergency breakdown support
- EC fan upgrades and energy-efficiency improvements
- Heating and cooling coil replacements and refurbishment works
- Decarbonisation and lifecycle upgrade projects during holiday shutdowns
Keep Critical Education Environments Running
Specialist AHU upgrades delivered safely within occupied education environments.
Net Zero and Decarbonisation Projects
Specialist AHU decarbonisation and energy-efficiency upgrades
We deliver practical decarbonisation solutions for existing AHUs, helping clients reduce carbon emissions, improve energy efficiency, and extend equipment life expectancy without the cost and disruption of full plant replacement.
We deliver practical decarbonisation solutions for existing AHUs, helping clients reduce carbon emissions, improve energy efficiency, and extend equipment life expectancy without the cost and disruption of full plant replacement.
Key Challenges We Address
- Removing reliance on gas-fired heating systems
- Improving energy efficiency and reducing operational carbon
- Delivering decarbonisation upgrades within existing AHU constraints
Typical Scope of Works
- Removal of gas burners and associated heating systems
- Heating coil replacements designed for lower-temperature systems
- EC fan upgrades with energy validation and reduced power consumption
- Refurbishment works to extend AHU operational life expectancy
Keep Net Zero Environments Running
Specialist AHU upgrades supporting net zero and decarbonisation projects.
Working in Live Environments
Many of the buildings we work within operate continuously and cannot tolerate disruption. Our engineers specialise in carrying out refurbishment and upgrade works within live environments, coordinating closely with estates teams and contractors to ensure works are completed safely and efficiently.
- Live environment installation
- Minimal shutdown requirements
- Compliance-focused upgrades
- Energy reduction strategies
Trusted by leading organisations
Our Featured Case Studies
Shetland Isles Leisure Centre
EC fans were fitted to reduce energy and maintenance cost as well as new dampers, bare tube frost coil, panel & bag filter frames and main heating coil.
Our Featured Case Studies
Canary Wharf –
EC Fan Wall Upgrade
The existing unit was fitted with two large backward curved fans and two 37kw motor’s that had been nearing the end of their lifespan.
Our Featured Case Studies