Solutions for
AHU cabinet PU foaming lines for HVAC equipment manufacturers
HVAC air-handler unit (AHU) cabinets require PU-foamed sandwich panels for thermal insulation and acoustic damping. We supply the PU foaming line, foaming moulds and insulation material system for AHU cabinet panel production — 30 – 150mm panel thickness, 50 – 500 cabinet sets per day.
In one line
2 HVAC cabinet OEM projects delivered — focused exclusively on the insulated-cabinet panel stage, the narrow slice of HVAC plant where PU foaming expertise matters most.
Scope: UREXCEED supplies only the PU foaming line and moulds for HVAC air-handler (AHU) cabinet production. We do NOT supply compressors, condensing units, refrigerant systems, or full HVAC plant turnkey solutions — contact a dedicated HVAC OEM integrator for those.
- HVAC cabinet OEMs
- Air handler unit manufacturers
Real pains we hear from buyers — and what we ship to solve each one
Four pains every HVAC AHU cabinet factory founder brings us. Our line clears each — staying inside scope (cabinet only, not the full AHU plant).
AHU cabinet panel thermal bridge — building HVAC engineer rejects spec on heat loss calculation
Thermal bridges form at panel-to-frame joints when PU foam doesn't reach edges evenly. Our cabinet mould design fills the full perimeter to ±0.3 mm thickness uniformity. Foam k-factor 0.022–0.024 W/m·K verified shot-by-shot. Joint thermal break gasket integrated into mould geometry. Field-measured U-value: 0.5–0.7 W/m²·K (well below 1.0 W/m²·K threshold).
AHU acoustic spec (LEED healthcare hospital projects) — STC 40 minimum, my current panels only hit STC 32
STC is foam density + panel thickness + panel-to-panel joint design. We tune PU formulation to density 45–50 kg/m³ (vs standard 38–42), panel thickness 50–80 mm, and ship the acoustic test chamber (USD 65K–140K) for ISO 717-1 STC measurement on every cabinet variant before shipping to LEED/healthcare buyers. Field STC: 42–48.
Project-based orders with different sizes per building — modular tooling not flexible enough
Our foaming moulds are reconfigurable ±20% from base mould dimensions (e.g., 1.2×2.4 m base mould covers 0.96×1.92 m to 1.44×2.88 m). Truly custom sizes outside ±20% range need new mould inserts (USD 60K–140K). Most AHU factories carry 3–5 base moulds covering 80% of project orders, plus inserts for major repeat sizes.
Cabinet supply scope vs full AHU plant — buyer keeps asking for fans, coils, motors which I don't supply
AHU plant = cabinet + coil + fan + filter + motor + controls. We supply ONLY the cabinet (foaming line). To keep buyer expectations clean: we ship a scope-boundary letter with every quote stating what's in scope (cabinet panels + foam + finish) and what's out (mechanical components). Most AHU brand customers source coils from Bohn/Bitzer, fans from Ziehl-Abegg/EBM-Papst, motors from ABB/WEG independently.
What You Need
yongjiapu.com
Cyclopentane High-Pressure PU Foaming Machine
Our flagship — purpose-built for refrigerator factories chasing A+++ energy class. Cyclopentane-ready out of the box with full ATEX Zone 1 safety package. Three sizes covering 500 to 8,000 cabinets a day.
View on yongjiapu.com
PU Raw Materials System
We make refrigerator-grade PU systems — polyol blend, MDI, blowing agent, all formulated in our own plant. k-factor down to 0.018, density customizable, tuned to your cabinet and your line.
Learn More
Hardware & Accessories
Hinges, seals, handles, LED lighting, evaporators & condensers
Learn MoreFrom inquiry to first commercial unit — the 6-step delivery flow
From inquiry to first AHU cabinet rolling off your line. ~7 months for a 200 units/day AHU cabinet line — faster than refrigerator lines because cabinet structure is simpler.
- 1
Inquiry & Scope Boundary Confirmation
Week 1–2Share target capacity, AHU segment (commercial / healthcare / data center / LEED), cabinet size range, target acoustic + thermal spec. We send 1-page proposal + scope boundary letter (cabinet only, mechanical components sourced by you) in 5 days.
- 2
Detailed Proposal & Acoustic / Thermal Spec
Week 2–3Engineering picks base mould platform sized for 80% of your project order range, PU formulation per acoustic + thermal target, acoustic test chamber if LEED/healthcare positioning. Quote with 16-line BOM in 10 days.
- 3
Contract & Panel Design Freeze
Week 3–530% down. Panel CAD + joint geometry + foam density target frozen. Acoustic / thermal targets signed off.
- 4
Mould + Acoustic Chamber Build
Month 2–4Cabinet moulds: 45–60 days. PU machine: 45 days. Acoustic test chamber (if optioned): 60 days. Pre-shipment FAT — we run trial cabinets and ship the acoustic + thermal validation report.
- 5
Sea Freight & On-Site Installation
Month 4–63–4 × 40' containers from Shanghai/Ningbo. On-site installation 2–3 weeks. Standard concrete floor, normal ceiling height — minimal building modifications.
- 6
Commissioning, Acoustic / Thermal Testing & Acceptance
Month 6–7First 30 trial AHU cabinets produced + tested through thermal U-value + STC acoustic protocols. Operator training. Acceptance signed when 20 consecutive cabinets pass thermal + acoustic spec. 60% payment due here.
Why this line works — backed by the real specifications
Single-purpose foaming line for AHU cabinet panels. Not full HVAC plant — see scope boundary below.
AHU panel thickness 30–150 mm on one line
PU foaming with cabinet panel thickness adjustable 30 mm (light commercial AHU) to 150 mm (industrial AHU with high acoustic damping requirement). Same line backbone, double-belt press gap adjusted per panel spec — no separate tooling.
PU density 38–58 kg/m³ for thermal + acoustic balance
AHU panels need to balance R-value (thermal insulation) with acoustic damping (sound transmission loss). Foaming density 38–45 kg/m³ for thermal-priority cabinets, 48–58 kg/m³ for acoustic-priority cabinets serving healthcare, data center, and labs.
50 to 500 cabinet sets per day modular capacity
Line layout starts at 50 cabinet sets per day for new HVAC OEM programs and scales to 500 sets per day. AHU OEM volumes are lower than refrigerator OEM (more SKU variation, smaller batches), so capacity headroom matters less than tooling flexibility.
Galvanized / stainless / aluminum skin compatibility
Foaming line tooling compatible with galvanized steel skin (standard commercial), stainless skin (food/pharma), and aluminum skin (data center / coastal installation). Skin material change requires only adhesive / surface-treatment adjustment, not tooling change.
Customization Options
Project-based AHU buyers need flexibility within ±20% of base mould. 4 axes per tender.
Panel size
Base mould 1.2 × 2.4 m covers ±20% (0.96–1.44 m × 1.92–2.88 m). Outside range: insert moulds (+USD 60K–140K per new size).
Insulation spec
PU foam 30 / 50 / 80 / 100 / 120 / 150 mm. Foam density 38–50 kg/m³ tuned for acoustic + thermal target.
Acoustic target
Standard (no chamber) / LEED healthcare STC 40+ / data-center STC 50+. ISO 717-1 test chamber optional (+USD 65K–140K).
Steel & finish
PPGI / PPGL / stainless skin. 0.5 / 0.6 / 0.8 mm gauge. Brand decal placement, RAL color match for project tenders.
Foam Quality Visualization — what closed-cell structure actually looks like
The single biggest predictor of refrigerator cabinet thermal performance is the foam cell structure. Closed-cell ratio, average cell diameter and density uniformity decide whether your cabinet holds -18°C in 35°C ambient — or fails the EU Ecodesign type-test. Here's what fine and coarse PU foam look like under a scanning electron microscope.
Industry-typical low-grade PU
- Avg cell diameter
- ~400 µm
- Closed-cell ratio
- 85–90%
- k-factor (W/m·K)
- 0.025–0.028
- Density uniformity
- ±5 kg/m³
Visible voids, broken cell walls, large irregular cells. Refrigerator cabinet pull-down test fails at 32°C+ ambient. EU Ecodesign type-test fails first submission.
Our cyclopentane PU system
- Avg cell diameter
- ~100 µm
- Closed-cell ratio
- ≥95%
- k-factor (W/m·K)
- 0.019–0.021
- Density uniformity
- ±0.5 kg/m³
Uniform fine cells, intact walls, high closed-cell ratio. Refrigerator cabinet pull-down test passes at 43°C tropical ambient. EU Ecodesign / WHO PQS / ENERGY STAR first-submission pass rate 90%+.
How we measure it: Every shipment of PU raw materials runs through pilot foaming + SEM cell-structure check at our lab. Every commissioned line gets a foam parameter card with these targets — if your operators tune to the card, the foam structure stays in this range. Sample reports available on request.
Illustration · Conceptual SEM micrographs representing typical industry coarse foam (left) vs UREXCEED cyclopentane PU foam quality target (right). Real SEM reports from your specific line available after commissioning.
Application Scenarios
AHU cabinets land in commercial, healthcare, and project tender markets.
- Commercial building HVAC AHU cabinet (office / retail)
- Healthcare AHU (hospital / clinic, LEED-compliant STC 40+)
- Data center AHU cabinet (acoustic STC 50+, high-load tropical)
- Industrial AHU (manufacturing plant air handling)
- Cleanroom AHU cabinet (pharmaceutical / electronics)
- Project-tender AHU (school / government building HVAC contract)
Questions factory owners ask us
What's the typical investment for an AHU panel foaming line?
Can you supply the full HVAC plant (compressors, condensing units)?
Do you support custom AHU sizes for project-specific orders?
What's the lead time for an AHU foaming line?
Can you provide acoustic testing equipment for AHU cabinets?
Optional Add-ons
Extend Your Production Line
Five proven add-ons our 1,800+ customers ask for after their first refrigerator factory line goes live. Discuss with our engineers which fit your spec.
Raw Material Supply
PU MDI / Polyol systems sourced direct from BASF / Covestro / Wanhua, calibrated to your foam specs and climate. Container-load discounts.
Spare Parts Package
2-year wear-parts package — seals, valves, heating elements, sensors. Pre-shipped with the line, no air-freight emergencies.
Robot Integration
ABB / KUKA 6-axis robot for de-molding, demoulding, palletizing or insertion of internal components — boost throughput +30%.
Automatic Demoulding System
Vacuum-assisted demoulding for thin-wall liners and complex geometries — eliminates worker injury, halves cycle time.
Quality Inspection System
Inline foam density, void, k-factor + dimensional QC stations. Auto-reject + traceability log — meets ISO 9001 + EU appliance regulation.
ROI · Cost Analysis
Investment Range & Payback
Indicative range based on 1,800+ delivered lines. Final pricing depends on automation level + add-ons + local labor cost. Request a quote for your spec.
Configuration note: Scope = cabinet panels only (we do NOT supply coils / fans / motors). Standard config USD 600K–1.2M. Add LEED/healthcare acoustic test chamber (STC 40+): +USD 65K–140K.
Service & Support
Warranty & Service
On-site intervention available in every region where we have delivered projects.
On-Site Installation
Our engineers fly to your factory to supervise installation, layout verification, and first-run production.
Commissioning + Tuning
Trial run + parameter tuning to your local raw material, climate, and target product spec — until throughput meets contract.
Operator Training
5-10 day on-site training for production team, QC, and maintenance — bilingual manuals + video tutorials provided.
3-Year Warranty + Spares
Core equipment 3-year warranty, electrical 2-year. Spare parts in stock with global express shipment 24h dispatch.
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Turnkey Production Lines for Refrigeration Equipment Factories
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