Fan Systems Custom Built Fans
Axial Flow Fans
Centrifugal Fans
ATEX Fans
Seismic Fans
Nuclear Fans
Tunnel and Jet Fans
Our
Capabilities
Bespoke Engineering Solutions
When standard solutions fall short, WITT UK Group’s custom engineering division delivers. With over 70 years of innovative problem-solving, we’ve created bespoke ventilation solutions for the world’s most challenging applications—from Antarctic research stations to nuclear submarines, from Formula 1 wind tunnels to pharmaceutical containment systems. Our Halifax facility combines traditional British engineering excellence with cutting-edge design technology, enabling us to transform unique requirements into reliable, certified air movement solutions. Whether you need a fan to operate at -60°C, handle radioactive particles, or fit within impossible space constraints, our engineering team thrives on challenges others deem impossible.
Complete Design-to-Delivery Service
Our bespoke capability extends far beyond simple modifications. We offer complete turnkey solutions including initial feasibility studies, CFD modelling, prototype development, testing, manufacture, and lifetime support. Our 50,000 square foot facility houses comprehensive manufacturing capabilities—from 5-axis CNC machining to robotic welding, from dynamic balancing to acoustic testing. This vertical integration means we control every aspect of production, ensuring quality whilst maintaining flexibility for design iterations. With in-house pattern making, casting capabilities through trusted partners, and exotic material expertise, we can manufacture fans in any conceivable configuration, material, or size—from 100mm miniature units to 5-metre diameter giants.
- Reverse engineering of obsolete equipment with modern performance improvements
- Multi-physics simulation including CFD, FEA, and acoustic modelling
- Prototype development and testing in our AMCA-certified facility
- Exotic materials including titanium, Hastelloy, Inconel, and specialist composites
- Combined fan systems integrating heating, cooling, filtration, or chemical dosing
- Compliance with unique standards including military, nuclear, pharmaceutical, and aerospace specifications
Why Choose
Custom Built Fans
UNLIMITED POSSIBILITIES
From miniature to massive, from cryogenic to extreme heat—if you can specify it, we can build it.
RAPID DEVELOPMENT
In-house design and manufacturing enables prototypes in weeks, not months, with seamless production scaling.
LIFETIME PARTNERSHIP
Complete support from concept through decades of operation, including upgrades and obsolescence management.
Frequently
Asked Questions
What types of custom fans can WITT UK Group manufacture?
Our bespoke capabilities are virtually limitless. We’ve manufactured fans for wind tunnels requiring precise flow characteristics, submarine ventilation with extreme shock resistance, cryogenic applications at -196°C, radioactive containment with remote maintenance features, food processing with FDA-compliant materials, and architectural features doubling as functional ventilation. If air needs moving in challenging circumstances, we can engineer a solution.
How long does custom fan development typically take?
Development timescales vary with complexity. Simple modifications to existing designs can be delivered in 4-6 weeks. Complex bespoke projects typically require 8-12 weeks for design and prototype, followed by 6-10 weeks for production. Urgent requirements can be fast-tracked using our rapid prototyping capabilities. We provide detailed project timelines during initial consultation, with regular updates throughout development.
Can you replicate obsolete or discontinued fans?
Yes, reverse engineering obsolete equipment is one of our specialities. Using 3D scanning, we capture existing geometry, then apply modern engineering to improve performance, efficiency, and reliability. We often achieve 20-30% efficiency improvements whilst maintaining dimensional compatibility with existing systems. This service is particularly valuable for heritage sites, vintage vessels, and legacy industrial plants where system modification isn’t feasible.
What's the minimum order quantity for custom fans?
We manufacture bespoke fans from single units to production runs. One-off prototypes are welcome—many of our successful product lines started as custom solutions for individual clients. Our flexible manufacturing setup enables economic production whether you need one specialised unit for a research facility or hundreds for a major infrastructure project.
How do you ensure custom fans meet required specifications?
Every bespoke project follows our rigorous development process: detailed requirements capture, design review with 3D models and calculations, CFD/FEA analysis for performance validation, prototype manufacture and testing, witnessed testing in our AMCA-certified facility, and comprehensive documentation including certificates and operation manuals. We maintain ISO 9001:2015 quality standards throughout, with full material traceability and stage-gate reviews.
What about certification for custom designs?
We manage all necessary certifications for bespoke fans including CE marking, ATEX certification for hazardous areas, marine classification (Lloyd’s, DNV-GL, ABS), nuclear standards (RCC-M, ASME), and military specifications. Our technical team navigates complex regulatory requirements, ensuring your custom solution meets all applicable standards. We provide complete technical files and declarations of conformity for audit purposes.