Cabinet AHUs
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PXA Cabinet AHU: Vertical & Side
Choose a cabinet air handling unit that fits your plantroom. Our PXA Cabinet AHU is available in Vertical and Side formats to suit real-world constraints—reduced footprint or low overall height—without compromising healthcare suitability, heat recovery efficiency, or maintainability. Download our brochures for full technical data: Vertical Cabinet AHU and Side Cabinet AHU.
Vertical and Side Cabinets share the same core design — arranged vertically for footprint savings or horizontally for headroom efficiency.
Why two cabinet formats?
- Vertical Cabinet AHU – best where floor area is tight but you can go taller. Top duct connections align with high-level runs to minimise bends and save space.
- Side Cabinet AHU – ideal where ceiling height is limited. A horizontal airflow path with side/top/bottom connections keeps overall height down and simplifies retrofits.
Make an enquiry for your air handling unit
Contact out team today and discuss your fresh air needs with our team. Call 01634 729 690, send an email to sales@eceuk.com, or make an enquiry through our form.
Vertical Cabinet AHU for Reduced Footprint
The Vertical Cabinet AHU delivers high performance in a compact footprint. It’s designed for plantrooms with small floor area, while keeping access safe and serviceable.
Key points
- Top-mounted take-offs to suit high-level ductwork and reduce lateral space.
- Front/side access with clear withdrawal zones; service corridor options for safe maintenance.
- Healthcare-ready filtration: ePM10 pre-filters with ePM1 rigid bag filters.
- Optional run/standby or duty-share fan configurations with external fan access rails to minimise downtime.
Easyshift fan rail allows fan removal externally for safe, fast maintenance.
Horizontal airflow path supports correct bag filter orientation and easy coil access.
Built for height-constrained spaces — same performance, smaller vertical impact.
Side Cabinet AHU for Low Height
The Side Cabinet AHU is built for height-constrained plantrooms. Its horizontal airflow protects upstream components and provides flexible duct connection positions.
Key points
- Low overall height with side/top/bottom duct options for tight ceiling zones.
- Horizontal component layout supports correct bag filter orientation and easy service access.
- Designed to support 4-metre separation of fresh-air intake and exhaust routing on healthcare projects (see HTM 03-01 principle below).
Healthcare: 4-Metre Separation
For healthcare schemes, we design for HTM 03-01 principles, including ensuring the fresh-air intake and exhaust discharge have a minimum 4-metre separation to prevent re-entrainment, with the discharge at a higher level than the intake. We also ensure removable condensate drain trays to maintain correct service requirement. Both Vertical and Side Cabinet AHUs can be configured to meet these requirements.
Designed to meet HTM 03-01: 4 m separation between intake and exhaust prevents
re-entrainment of vitiated air.
Both Vertical and Side Cabinets achieve healthcare-ready performance with proper condensate drainage.
Vertical vs Side Cabinet AHUs on Roofs
For roof-mounted AHUs, format choice matters.
Vertical cabinets use top duct connections, adding height and making it harder to maintain the HTM 03-01 4 m separation between intake and exhaust. This can increase roof penetrations and planning visibility.
Side cabinets use a low horizontal layout with side or end connections, keeping the unit below parapet level and providing built-in 4 m separation. The result: easier compliance, simpler installation, and cleaner rooflines.
In summary:
- Vertical = small footprint but taller and harder to conceal on roofs.
- Side = low profile, easier installation, and inherently compliant with HTM 03-01 4 m separation.
Benefits of the Cabinet AHU
- Right format for your space: Vertical for reduced footprint and top connections; Side for low height and flexible take-offs.
- Healthcare application ready: cleanable internals, correct filter orientation/sealing, drainage and service corridor layouts.
- Energy & carbon: efficient fans and high heat-recovery lower operating energy and support net-zero policies.
- Maintainability: external fan rail access, clear withdrawal zones, and intuitive component layout shorten planned maintenance.
- Integration: packaged or BMS-integrated control strategies (CAV, VAV, DCV-ready) with remote access options.
Five pillars of AHU performance: Efficiency • Compliance • Maintainability • Controls • Lifecycle+
Case Studies
Leicester Diabetes Centre
Get in touch
Find out more. Talk to our professional team on 01634 729 690 or email sales@eceuk.com.