OEM Equipment Spec
HVAC AHU Panel Spec Library
The ratio-controlled foaming line, panel moulds and closed-cell raw materials behind a double-skin AHU casing panel — engineered for the void-free, low-k, dimensionally flat bonded sandwich that an EN 1886-class casing lives on, not the deep cold a fridge chases.
Spec rev. July 2026
An air-handling-unit casing panel rolls off the same two-skin, one-PU-shot logic as a refrigerator wall — but the duty is different. A fridge wall fights to hold a low temperature. An AHU wall has to do four things at once across a large, rigid sheet-metal sandwich: insulate (low thermal transmittance), block heat paths through the frame (low thermal bridging), stay air-tight under fan pressure (casing leakage), and carry its own mechanical load without bowing. All four are graded together by the EN 1886 standard that AHU buyers read. This page is the production-line spec library for HVAC cabinet OEMs who build those panels — what the panel has to do, the panel classes the line serves, and the UREXCEED equipment that delivers it. One scope note up front: we supplies the production-line equipment and moulds. The finished air handler, its fans, coils, filters and refrigerant systems, and any EN 1886 / Eurovent certification stay with you.
Production-line spec at a glance
Why an AHU panel line is built differently from a refrigerator line
Five requirements separate an HVAC AHU casing panel line from a refrigerator-cabinet line. Each points back at the foaming system, the press fixtures and the moulds — because an EN 1886-class casing earns its rating at the panel, where a uniform, void-free, well-bonded sandwich does the work, not at a single component.
| AHU panel requirement | What it demands | How the UREXCEED line delivers it |
|---|---|---|
| Low thermal transmittance | An even, low k-factor core that fully fills the panel with no thin or starved sections | Ratio-controlled high-pressure metering and corner-to-corner fill so the whole panel meets one conductivity, not an average |
| Low thermal bridging | No continuous metal-to-metal path between the inner and outer skin at frames and edges | Mould and fixture design that carries full-thickness foam to the panel edges, isolating the two skins |
| Casing air-tightness | A void-free, fully bonded sandwich that will not flex or leak under positive and negative fan pressure | Consistent density and skin adhesion across the panel so the casing holds its EN 1886 leakage class |
| Mechanical rigidity | Enough core density and skin bonding for the sandwich to act structurally and resist deflection | Controlled fill density plus clamp pressure and cure-dwell so both skins work as one stiff panel |
| Dimensional flatness | Panels that stay flat and true so panel-to-panel gaskets seal and the casing squares up | Press fixtures and disciplined demould timing so panels do not bow, shrink or creep after cure |
AHU panel classes the line serves
One foaming line and a mould set build the full panel family an air handler needs. Thickness, density and fixture change with the panel role; the engineering target — a void-free, low-k, flat bonded sandwich — does not.
Double-skin wall panels
25–50 mmThe standard AHU casing wall — two sheet-metal skins bonded to a PU/PIR core in one shot, sized for the bulk of the cabinet area.
Thick high-efficiency panels
60–150 mmLow-energy and cold-climate AHUs that need a deeper core for a lower U-value and a stronger thermal-bridging class.
Door & access panels
Hinged / removableService doors and removable access panels with gasket frames — the same sandwich, with fixtures that keep the panel flat so the seal closes.
Roof & base-frame panels
Load-bearingTop and floor panels that carry structural and walk-on load and manage condensate drainage — higher density, same void-free fill discipline.
What the line delivers — and what stays with you
UREXCEED scope is deliberately narrow and honest. The line delivers a consistent panel; the certification, the air-side machinery and the finished unit stay with the AHU manufacturer. Read this before you brief the project.
Delivered — the foaming line & moulds
Ratio-controlled high-pressure PU foaming system, panel press / jig fixtures and moulds, cure-dwell and handling line, and the matched closed-cell PU raw-material system — installed, commissioned and run to your panel sizes.
Delivered — a consistent, void-free panel
The engineering outcome the line is built for: an even low-k core, full corner-to-corner fill, strong skin bonding and dimensional flatness — the bonded sandwich every EN 1886 thermal and leakage class depends on.
Stays with you — EN 1886 / Eurovent certification
The thermal-transmittance, thermal-bridging, casing-leakage and mechanical-strength classes are tested and certified on your finished casing, by you or your test house. The line gives you a panel that can hit them; the rating is yours to earn and hold.
Stays with you — air-side machinery & full HVAC plant
Fans, coils, filters, dampers, drives and controls, and any refrigerant or condensing systems, plus full HVAC-plant turnkey integration — all outside UREXCEED scope. Source those from your air-handler component suppliers and a dedicated HVAC integrator.
The UREXCEED AHU panel line — equipment set
Four equipment groups make the panel. Each exists to protect one thing: a uniform, void-free, flat bonded sandwich at the panel sizes you build.
High-pressure PU metering & mixing machine
Ratio-controlled metering for an even, low-k fill across large panels — the difference between one conductivity number and a patchy average. Sized to the panel volume and shot times you run.
Panel press & jig fixtures + moulds
Fixtures hold the two sheet-metal skins flat and parallel while the foam rises and bonds, and the moulds carry foam to the edges to break the thermal bridge. This is where flatness and bridging class are won.
Cure-dwell & handling line
Controlled dwell and demould timing so panels reach full cure before handling — the discipline that stops panels bowing, shrinking or creeping after they leave the press.
Closed-cell PU raw-material system
A PU or PIR system matched to your target density, k-factor and any fire-behaviour need — supplied and tuned with the line so the chemistry and the machine agree.
See the HVAC AHU foaming-line solution
This spec library sits behind our HVAC AHU foaming-line solution page, which sets out the line scope, typical scale and target buyers for air-handler cabinet OEMs. Start there for the commercial overview, then come back here for the panel detail.
Open the HVAC AHU foaming-line solutionHVAC AHU panel line — frequently asked questions
Does UREXCEED build finished air-handling units?
No. We supplies the PU foaming line, the panel moulds and the closed-cell raw materials that build double-skin AHU casing panels. Fans, coils, filters, dampers, refrigerant and condensing systems, full HVAC-plant integration and EN 1886 / Eurovent certification all stay with you, the air-handler manufacturer.
What panel thicknesses can the line foam?
The moulds and line cover roughly a 30–150 mm PU core — from standard double-skin wall panels (around 25–50 mm) through to thick high-efficiency panels (60–150 mm) for low-energy or cold-climate air handlers. Exact thickness is set by the mould.
Can the line meet EN 1886 thermal and leakage classes?
The EN 1886 thermal-transmittance, thermal-bridging, casing-leakage and mechanical-strength classes are tested and certified on your finished casing, not on the line. What the line gives you is the void-free, low-k, well-bonded panel those classes depend on — a consistent panel is a precondition for a good rating, but the rating is yours to certify.
PU or PIR foam — which does the line run?
Both. PIR is often chosen where better fire behaviour is needed; PU where thermal and cost balance differently. We supplies high-pressure metering suited to either and tunes the raw-material system with you to your target density, k-factor and any fire-behaviour requirement.
How does the line control thermal bridging?
Through mould and fixture design. The moulds carry full-thickness foam to the panel edges and frames so there is no continuous metal-to-metal path between the inner and outer skin. Even fill at the edges, not just the centre, is what protects the EN 1886 thermal-bridging class.
What throughput should we plan for?
Roughly 50–500 AHU panel sets per day, depending on panel size and thickness, the number of moulds and how much of the handling line is automated. We size the metering machine, fixtures and cure-dwell to the daily target you give us.
Building an AHU panel line?
Send us your panel sizes, core thickness, target density and daily volume. We will come back with the foaming line, mould set and raw-material system scoped to the EN 1886-class panel you need to build — and a clear line on where our scope ends and yours begins.
Request a line spec