Commercial Twin Fan
Air Handling Units
Custom Built AHUs – Proudly Manufactured in the UK
What Is a Twin Fan?
Twin fan AHUs feature two high-efficiency, direct-drive EC plug fans within a single, compact unit, providing built-in redundancy for enhanced reliability. Their dual-fan design ensures uninterrupted airflow, even during maintenance or unexpected faults, minimising downtime and keeping commercial spaces fully ventilated at all times. Equipped with EC technology, these units offer precise airflow control, maximising energy efficiency and reducing operating costs.
Twin Fan Applications
Twin fan AHUs are ideal for applications where reliability and continuous operation are essential. Using two direct-drive EC plug fans, they provide built-in redundancy through run-and-standby or automatic changeover operation. Commonly used for toilet extract and commercial ventilation systems, twin fan configurations improve energy efficiency, reduce noise levels, and help maintain consistent performance while preventing air recirculation.
Twin Fan Applications
Twin fan AHUs are ideal for applications where reliability and continuous operation are essential. Using two direct-drive EC plug fans, they provide built-in redundancy through run-and-standby or automatic changeover operation. Commonly used for toilet extract and commercial ventilation systems, twin fan configurations improve energy efficiency, reduce noise levels, and help maintain consistent performance while preventing air recirculation.
Commercial Twin Fan Features & Benefits
High-efficiency EC technology, automatic changeover functionality, and intelligent control combine to deliver reliable, energy-efficient ventilation for commercial applications.
High Energy Efficiency
EC motor technology reduces energy consumption and operating costs while supporting modern energy compliance standards.
Auto Changeover
Twin fan configuration with automatic changeover ensures continuous operation by switching to the standby fan if a fault occurs or during scheduled rotation.
Demand-Based Speed Control
Integrated EC controls allow precise airflow adjustment and easy BMS integration for efficient, demand-led ventilation.
Compact & Space Efficient
Two fans within a single unit provide high performance in a reduced footprint, ideal for plantroom or ceiling void installations.
Low Maintenance Design
Direct-drive EC fans eliminate belts and reduce mechanical wear, lowering maintenance requirements and improving lifespan.
Related Case Studies
Warner Leisure, Gunton Hall – AHU Manufacturing
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AHU Manufacturing FAQs
What is an Air Handling Unit (AHU), and what does it do?
An Air Handling Unit (AHU) is a key component in HVAC systems, responsible for regulating and circulating air as part of a building’s heating, ventilation, and cooling strategy. Each unit typically contains fans, filters, coils, dampers, and controls — all working together to condition the air and deliver it efficiently throughout the building.
Can I customise an AHU for my specific project?
Absolutely. All of our AHUs are custom-built in the UK to suit your exact performance, layout, and environmental requirements. We offer full flexibility on size, coil type, fan selection (including EC fans), filtration class, controls integration, and access configuration. Even with bespoke design, we maintain some of the fastest lead times in the industry.
Are your AHUs compliant with energy and noise regulations?
Yes. Our AHUs are built to exceed performance standards for:
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Specific Fan Power (SFP) – for energy efficiency
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Part L2 of UK Building Regulations
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Low-noise operation – using acoustic insulation and EC fans
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EcoDesign and ErP Directives
Our systems are engineered to reduce operational costs while maintaining high comfort levels across all building types.
How do I know what size AHU I need?
We handle that for you. Our engineers assess your project’s airflow rates, static pressure requirements, temperature control needs, and spatial constraints to specify the right system. We also factor in:
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Filter face velocity
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Cooling/heating coil capacities
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Fan duty curves and energy consumption
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Access and maintenance considerations
Our goal is to deliver right-sized, efficient, and futureproof solutions — not just the biggest box that fits.
What is your lead time?
Our lead times vary depending on the specification and complexity of the AHU, but currently we’re offering UK manufacturing lead times of just 5–7 weeks — among the fastest in the industry for fully bespoke systems.
Building Ventilation Solutions Limited
Book a site survey today and receive bespoke AHU advise & recommendations from our AHU Experts.
Over 40 + Years Experience
With over 40 years of experience, our engineers have seen and resolved virtually every HVAC issue.
Trusted AHU Engineers
Rely on our seasoned AHU engineers for expert solutions and exceptional service.
Proudly Serving Nationwide
Providing top-tier HVAC solutions across the United Kingdom with unmatched expertise and dedication.
Customer Focused
Whether you’re a contractor, facilities manager, or asset manager, we are committed to delivering the best possible experience.
