SINCE 1990
Electrification-Era
Air Source Heat Pump Fans + Complete Unit Platform
A complete A+++ ErP fan solution for heat pump OEMs — EC Axial for outdoor condensers + Backward Curved EC for AHU/FCU + EC Cross Flow for indoor units + Anti-corrosion for coastal + AHU Plug Fan for commercial, plus Air Source Heat Pump complete-unit ODM. Residential · Commercial · Coastal · Complete Unit — a single supplier.
Why heat pump OEMs choose LONGWELL
Heat pumps are the core heating technology of the electrification era — and fans are the silent ruler of efficiency and noise. The hidden customer pain point is not the compressor; it is the condenser fan + indoor end fan + coastal corrosion protection. LONGWELL's entry point is not just supplying fans — it is delivering an integrated fan solution that lets the complete unit pass A+++ certification, plus full Air Source Heat Pump complete-unit ODM capability.
Fans + complete unit in one supplier
One of the few Chinese companies combining fan manufacturing with a complete Air Source Heat Pump product line (HVAC Systems category). Customers freely choose OEM fans, ODM complete units, or Hybrid. Competitors like Ebmpapst and Ziehl-Abegg only supply fans.
4 applications, unified Modbus
Residential + Commercial + Coastal + Complete Unit — all four applications from a single supplier. EC platforms share Modbus register maps, so the customer's main control board integrates once and is compatible across all four. Anti-corrosion interfaces are 100% interchangeable with the standard version.
90-day custom NPI
European suppliers' 12-24 month NPI cycle frequently blocks customer ErP upgrade windows and new-model launches. LONGWELL's 90-day custom NPI has been validated with multiple Tier-1 customers, and China-local certification labs cut certification cycles by 60-70%.
A+++ ErP system-level support
EU Ecodesign 2024 reweighted scoring: fan energy accounts for 15-20% of overall SCOP — the wrong fan can drop a unit from A+++ to A+. LONGWELL combines IE4+ + intelligent control + low noise to deliver A+++ directly, plus system-level ErP / SCOP calculation services.
To Our Heat Pump OEM and EPC Partners
To heat pump OEM engineering, procurement, and product leaders:
The electrification revolution has made heat pumps the core of heating — and fans are now what decides whether a complete unit can pass A+++ ErP, stay quiet after 22:00, and start reliably at -25°C in Nordic winters. The EU REPowerEU plan targets 60 million heat pumps by 2030, the US IRA provides a $2,000 rebate per unit, and China's coal-to-electricity policy adds 3 million units annually — but the hidden customer pain point was never the compressor. It is the condenser fan + indoor end + coastal corrosion — the non-compressor subsystems.
LONGWELL's position is as a provider of the integrated fan solution, not just a fan supplier. EC Axial Fan serves outdoor condensers (5 kW residential through 150 kW commercial); Backward Curved EC Fans serve commercial AHU + FCU; EC Cross Flow Fan serves wall-mount indoor units at bedroom-grade ≤ 28 dB; Anti-corrosion Centrifugal Fan serves coastal and island installations (ISO 9227 720h NSS); AHU Plug Fan serves large commercial AHUs. Add the Air Source Heat Pump complete-unit ODM capability — and customers can flexibly choose OEM fans, ODM complete unit, or Hybrid engagement.
This Pack documents what we offer and how we engage. §1-§2 cover the product system, §3 maps applications, §4 presents three flagship cases (EU residential / NA cold-climate / China industrial high-temp), §5-§6 cover engineering support and commercial paths.
Four core application dimensions, each with purpose-engineered products
Each of the four heat pump applications has distinct pressure, environment, noise, and certification requirements. LONGWELL maps a purpose-engineered fan series to each — all named under the official longwellfans.com product categories.
Residential ASHP
Residential Air Source Heat Pump
DHW + heating + cooling, 5-30 kW. EC Axial Fan outdoor + EC Cross Flow Fan indoor. A+++ ErP + ≤ 45 dB.
Commercial VRF + Large
Commercial VRF / Large Heat Pump
30-150 kW per unit. EC Axial + Backward Curved EC + AHU Plug Fan integrated. BACnet integration.
Coastal / High-Humidity
Coastal / Anti-corrosion
Anti-corrosion Centrifugal Fan + 304/316L SS impellers + PCB conformal coating. ISO 9227 720h salt-spray validated.
Air Source Heat Pump Complete Unit
Complete Unit Integration
HVAC Systems category — compressor + heat exchanger + fans + control fully integrated. Customer ODM private-label, 6-9 months faster to market.
All EC platforms share the same Modbus register map — the customer's main control integrates once and is compatible across all four applications. Anti-corrosion variants are 100% interface-interchangeable with the standard version — coastal and standard share the same structure. EC Axial Fan and EC Cross Flow Fan ship from the same plant — unified visual identity for the complete unit. Customers can source OEM components or ODM complete units, both from a single supplier.
5 products + complete-unit architecture overview
All names match the official longwellfans.com product categories. EC Axial Fan serves outdoor condensers; Backward Curved EC Fans serve commercial AHU + FCU; EC Cross Flow Fan serves wall-mount indoor units; Anti-corrosion Centrifugal Fan serves coastal; AHU Plug Fan serves large commercial; Air Source Heat Pump is the complete-unit product line.
| Product | Application | Engineering Role |
|---|---|---|
| EC Axial Fan ★ Flagship | ①+②+③ | Outdoor condenser flagship · Ø 350-910 mm · -25/-30°C cold-climate · LWAE3G sub-series |
| Backward Curved EC Fans | ② | Commercial AHU + FCU · EC Plug Fan format · LWBE3G sub-series · ≤ 32 dB FCU silent |
| EC Cross Flow Fan | ① | Wall-mount indoor + FCU indoor side · ≤ 28 dB bedroom-grade · Ø 60-120 × 600-1500 mm |
| Anti-corrosion Centrifugal Fan | ③ | Coastal / island / chemical heat pump · ISO 9227 720h NSS · 304/316L SS · PCB 3-layer protection |
| AHU Plug Fan | ② | Large commercial AHU integration · FanGrid N+1 array · BACnet + Modbus · Central AC category |
| Air Source Heat Pump (complete unit) | ④ | HVAC Systems category · OEM/ODM/Hybrid 3 engagement modes · Private-label complete unit delivery |
★ EC Axial Fan — Outdoor Condenser Flagship
From 5 kW residential to 150 kW commercial — the outdoor condenser workhorse for every heat pump. Ø 350-910 mm full size range, IE4+ EC efficiency, integrated 0-10V / PWM / Modbus control, -25°C cold-climate start. The LWAE3G sub-series is the engineered platform deployed across European OEMs.
| Size | Airflow | Pressure | Power | Application |
|---|---|---|---|---|
| Ø 400 (LWAE3G-400) | 4,500 m³/h | 120 Pa | 0.35 kW | Residential 5-8 kW |
| Ø 500 (LWAE3G-500) ★ Mainstream | 7,800 m³/h | 150 Pa | 0.65 kW | Residential 10-15 kW |
| Ø 630 (LWAE3G-630) | 14,500 m³/h | 200 Pa | 1.6 kW | Commercial 20-40 kW |
| Ø 800 (LWAE3G-800) | 22,000 m³/h | 250 Pa | 2.8 kW | Commercial 60-100 kW |
★ Ø 500 is the mainstream European residential heat pump size (10-15 kW standard configuration). Noise Lp ≤ 45 dB(A) @1m · night silent mode ≤ 38 dB(A) · IEC 61800-9 part-load tested.
Backward Curved EC Fans — Commercial Heat Pump AHU + FCU Core
LWBE3G sub-series — a high-pressure, low-noise centrifugal platform with dual roles: commercial AHU (Ø 310/355/400 mm, 500-900 Pa) + FCU (Ø 190/220/250 mm, ≤ 32 dB). The EC Plug Fan format (housingless direct-drive) shrinks AHU footprint by 20-30% and lifts efficiency by 8-12%.
▸ Backward Curved EC Fans — dual-role comparison
| Dimension | Commercial AHU Config | Fan Coil Unit (FCU) |
|---|---|---|
| Typical Size | Ø 310 / 355 / 400 mm | Ø 190 / 220 / 250 mm |
| Airflow | 3,500 - 9,500 m³/h | 400 - 1,800 m³/h |
| Pressure | 500 - 900 Pa | 80 - 300 Pa |
| EC Plug Fan Format | ✓ Standard (housingless direct-drive) | EC Plug Fan compact variant optional |
| Noise Lp | ≤ 60 dB(A) @1m | ≤ 32 dB(A) @1m (FCU primary demand) |
| Control Interface | Modbus RTU + BACnet MS/TP | Modbus RTU + 0-10V + PWM |
EC Cross Flow Fan — Wall-Mount Indoor Unit + FCU Indoor Side
Tangential impeller — bedroom-grade ultra-low noise ≤ 28 dB, only achievable with cross flow; centrifugal or axial indoor units sit at ≥ 35 dB and trigger sleep-disturbance complaints. Ø 60×600 / 80×900 / 100×1200 / 120×1500 mm full sizes, with Ø 80×900 the mainstream wall-mount choice.
| EC Cross Flow Fan Engineering Spec | Specification |
|---|---|
| Impeller Type | Tangential cross flow, helical angled blades, engineering plastic PA + GF30 reinforced |
| Airflow | 250 - 1,200 m³/h |
| Noise Lp | ≤ 28 dB(A) silent mode (bedroom-grade) · ≤ 42 dB(A) max |
| Discharge Pattern | Wide flat discharge (covers 4-5 m bedroom width), ΔT ≤ 2°C across discharge plane |
| Motor | EC integrated, 0-10V / PWM speed control + multi-step presets, Modbus integration |
| Typical Application | Wall-mount split indoor / FCU bedroom side / concealed fan coil / compact indoor end |
Anti-corrosion Centrifugal Fan — Coastal / High-Humidity Protection
Standard fans installed within 5 km of the coast suffer 50-70% premature failure in 3-5 years. LONGWELL's 3-level corrosion protection: (1) coatings (epoxy 100 μm + polyurethane 50 μm + PCB conformal coating); (2) materials (304 / 316L SS impellers); (3) motor enclosure (IP67 + potted terminal box + double-layer labyrinth-sealed bearings + integrated desiccant chamber). 100% interface-interchangeable with the standard version — existing production lines upgrade without mechanical retrofit.
| 3-Level Protection Architecture | Specification |
|---|---|
| Level 1 — Coating | Epoxy powder coat 100 μm + polyurethane topcoat 50 μm + PCB Conformal Coating |
| Level 2 — Material | Impeller: 304 SS (standard) / 316L SS (marine-grade) · Housing: 304 SS or PP corrosion-resistant plastic |
| Level 3 — Motor | IP67 fully-sealed + potted terminal box + double-layer labyrinth-sealed bearings + integrated desiccant chamber |
| ISO 9227 Validation | NSS 720h zero corrosion (standard) · 1,200h (marine-grade) · ASTM B117 + IEC 60068-2-52 |
| Typical Lifetime | Marine-grade ≥ 10 years (3 km coast) · Standard coastal-grade ≥ 15 years (5-20 km coast) |
AHU Plug Fan — Large Commercial AHU System Integration
LONGWELL's official Central Air Conditioning category product. The natural choice for centralized commercial heat pump systems serving 5,000-50,000 m² in offices, hospitals, and schools. FanGrid N+1 arrays deliver fault tolerance — a single fan failure does not stop the unit.
| AHU Plug Fan Engineering Spec | Specification |
|---|---|
| Airflow | 8,000 - 60,000 m³/h (Ø 450 - Ø 1,000 mm) |
| Max Pressure | ≤ 1,800 Pa (commercial heat pump AHU typical 800-1,200 Pa) |
| FanGrid Array | ✓ 2x2 / 2x3 / 3x3 redundant arrays (N+1 fault-tolerant) |
| BMS Integration | Modbus RTU + BACnet MS/TP + IEC 61131-3 PLC compatible |
Beyond fan components, LONGWELL offers complete Air Source Heat Pump units through the HVAC Systems category at longwellfans.com. Mode A (OEM Fans): customer uses own compressor system, sources LONGWELL EC fans only. Mode B (ODM Complete Unit): LONGWELL ships complete units with customer private-label, customer enters market 6-9 months faster. Mode C (Hybrid): customer compressor + LONGWELL complete airflow path + control system.
Application scenarios · Residential / Commercial / Coastal / Complete Unit
Exact fan configuration for each heat pump application, matched to certification targets (A+++ / AHRI 1230 / EHPA) and regional markets (EU / NA / China).
① Residential Air Source Heat Pump — DHW + Heating + Cooling Triple-Mode
Residential heat pumps (5-30 kW) are the highest-growth heating segment — EU REPowerEU mandates 60M units by 2030, the US IRA provides a $2,000-per-unit rebate, and China subsidizes coal-to-electricity conversion. The bottleneck is no longer the compressor (mature technology) but the A+++ ErP-compliant fan + low noise + cold-climate start.
| Subsystem | LONGWELL Product | Quantity & Configuration |
|---|---|---|
| Outdoor condenser fan | EC Axial Fan Ø 400-500 | 1 unit (5-15 kW) / 2 units (15-30 kW), Modbus + 0-10V |
| Wall-mount indoor fan | EC Cross Flow Fan Ø 80×900 | 1 unit per indoor head, night silent ≤ 28 dB |
| DHW tank ventilation | (integrated in outdoor) | DHW mode uses outdoor EC Axial Fan in dual-duty role |
| (Complete Unit Optional) | Air Source Heat Pump complete unit | ODM private-label (Mode B), 6-9 months faster to market |
Key engineering challenges: A+++ ErP system-level requirement · ≤ 45 dB residential compliance · -25/-30°C cold start · intelligent defrost coordination · R32 / R290 low-GWP refrigerant compatibility.
② Commercial VRF + Large Air Source Heat Pump
Commercial VRF and large heat pumps (30-150 kW per unit) serve offices, hospitals, schools, and hotels. The market is dominated by Daikin / Mitsubishi / Hitachi / Gree / Midea / Carrier — but all of them are sourcing EC fans from Chinese suppliers like LONGWELL to meet the 2025+ A+++ ErP commercial mandate.
| Subsystem | LONGWELL Product | Configuration |
|---|---|---|
| Outdoor condenser | EC Axial Fan Ø 630-910 | 2-6 units per module, master Modbus synchronized |
| Indoor AHU | AHU Plug Fan / Backward Curved EC | Single AHU or FanGrid N+1 array, BACnet integration |
| Indoor FCU | Backward Curved EC Fans Ø 220-250 | FCU integrated, ≤ 32 dB, guest room / office grade silent |
| Ducted unit | Backward Curved EC Fans Ø 280-310 | Ducted unit with EC Plug Fan integrated |
③ Coastal / High-Humidity Heat Pump (Anti-corrosion)
Coastal installations (within 5 km of sea) face a dual challenge: (1) salt spray accelerates galvanic corrosion; (2) high humidity (85-100% RH) accelerates condensation on motor electronics. Standard heat pump fans show 50-70% premature failure within 3-5 years. Three hidden failure modes: impeller pitting → vibration → bearing failure; PCB corrosion → control board failure; housing corrosion → air leak → performance decay.
④ Complete Unit Integration: Air Source Heat Pump · 6-9 Months Faster to Market
LONGWELL is one of the few Chinese suppliers offering both fan components AND complete Air Source Heat Pump units. For new heat pump brands or HVAC OEMs entering heat pump for the first time, ODM (complete unit private-label) saves 6-9 months vs building production capability in-house.
| Dimension | Mode A: OEM Fans | Mode B: ODM Complete Unit | Mode C: Hybrid |
|---|---|---|---|
| Delivery content | EC fan components only | Complete heat pump units + LONGWELL fans + customer nameplate | Customer compressor + LONGWELL airflow path + control |
| Time to market | Self-build line: 12-18 months | 3-6 months to first shipment | 6-9 months to first shipment |
| MOQ | 100 units / SKU | 200 units / model | 100 units / configuration |
| Target customer | Existing heat pump OEM | New entrants — HVAC / heating brands going into heat pump | Has compressor capability, needs airflow + control |
ODM service covers: full capacity range 5-150 kW · R32 / R290 / R454B refrigerant options · A+++ ErP default configuration · CE / UKCA / AHRI / GB certifications complete · global service network alignment.
Tier-1 OEM Strategic Customers (Daikin / Mitsubishi / Vaillant / Bosch class)
Tier-1 customers order 10,000-100,000 units per year and have 4 core demands: unified cross-regional ErP/AHRI/EHPA compliance · single-source complete fan BOM · framework agreement + rolling forecast · joint R&D + long-term roadmap.
| Tier-1 OEM Commercial Terms | Terms |
|---|---|
| Delivery model | Monthly rolling forecast + 30-day PO + customer regional VMI spare parts |
| Pricing | Annual volume tiered pricing; 50,000+ unit customers receive additional 10-15% discount |
| Joint R&D | Tier-1 customer dedicated 2-3 application engineers, joint R&D roadmap 3-year rolling |
| Warranty | 36-60 month extended warranty (matches heat pump 7-10 year warranty policy) |
Industrial high-temp heat pump · the new 80-120°C output market
Industrial high-temp heat pumps (output 80-120°C) are an emerging market driven by EU industrial decarbonization and China's dual-carbon policy. Applications include chemical steam, food (dairy / brewery), pulp & paper, and district heating. Unit capacity 150 kW to 5 MW. 2025-2030 CAGR is 22% — 1.4× faster than residential.
| Subsystem | Fan Configuration |
|---|---|
| Outdoor evaporator | EC Axial Fan Ø 800-910 mm, multi-unit array, -25°C to +60°C wide-temp, Anti-corrosion variant for chemical plants |
| Indoor condenser exhaust | Backward Curved EC Fans (LWBE3G), high-temp +80°C operating, stainless-steel bearings + F-class insulation |
| Process workshop ventilation | AHU Plug Fan FanGrid array, +80°C continuous / +120°C short-term temp tolerance |
| Chemical plant special scenarios | ATEX Zone 2 explosion-proof (shared platform with I-06 BESS Pack's REM ATEX EC), HF/HCl vapor environments with 316L SS + PCB 3-layer coating |
EU Innovation Fund 2024-2030 invests €40B in industrial decarbonization with heat pumps as a key supported technology. China's 2030 dual-carbon goals drive industrial heat pump replacement of steam boilers across 4 sectors (steel / cement / chemicals / food), market estimated at ¥30B/yr. LONGWELL's existing industrial-grade fan capabilities (ATEX, 316L, FanGrid) developed for I-05 Industrial Dust + I-06 BESS naturally fit high-temp industrial heat pumps.
Heat pump certification matrix · for global deployment
All certificates are held by LONGWELL; original PDFs available on request. Coverage across EU + NA + APAC. Gold-marked items carry the highest weight in heat pump customer audits.
| Certification | Standard | Applicable Products |
|---|---|---|
| CE / UKCA | EU Machinery / EMC / LVD + UK MCR | All 5 fans + ASHP complete unit |
| ErP / Ecodesign ★ | EU 2024/1781 (Ecodesign 2024) + Lot 6 / Lot 11 | All 5 fans · ASHP complete unit A+++ support |
| EN 14511 | Heat pump COP / SCOP efficiency | Air Source Heat Pump complete unit |
| EN 12102 | Heat pump sound power Lw test | All 5 fans + ASHP |
| EHPA Quality Label ★ | European Heat Pump Association quality cert | ASHP complete unit (EU market admission) |
| AHRI 550/590 + 1230 ★ | North America water-cooled / air-cooled heat pump performance | EC Axial Fan + ASHP (NA market) |
| ETL / UL 1995 | North America electrical safety (heat pump / AC) | All 5 fans + ASHP (NA market) |
| GB 21455 / GB 29541 | China heat pump mandatory energy + performance standards | All 5 fans + ASHP (China market) |
| NRCan Cold-Climate | Canada cold-climate heat pump specification | EC Axial Fan -25/-30°C cold variant |
| ISO 9227 NSS | Neutral salt spray test (coastal corrosion validation) | Anti-corrosion Centrifugal Fan |
| ISO 9001 / 14001 / 45001 | Quality + Environment + Occupational Safety | ✓ Certified LONGWELL manufacturing system |
Test Report Library
T1 = PDF delivered within 1 business day; T2 = scheduled at a named lab with confirmed delivery date. T1-T2 services complimentary for project-intent customers (NDA-signed or RFP-issued). The Case 1 (EU Top-5 OEM, 28,000 EC Axial Fan units) complete ErP + EN 14511 + EHPA + EN 12102 test report package is available as the flagship reference package.
| Test Type | Standard | Coverage | Status |
|---|---|---|---|
| ErP / SCOP System Test | EU 2024/1781 Ecodesign 2024 | EC Axial + ASHP complete unit | ✓ T1 Ready |
| EN 14511 COP / SCOP | EN 14511-2 + EN 14825 | Air Source Heat Pump | ✓ T1 Ready |
| EN 12102 Noise Lw | EN ISO 3744 + 12102 | All 5 fans + ASHP | ✓ T1 Ready |
| AHRI 550/590 + 1230 | AHRI 550/590-2023 + 1230-2024 | EC Axial Fan + ASHP (NA) | ✓ T1 Ready |
| -30°C Cold-Start Validation | IEC 60068-2-1 + NRCan | EC Axial Fan cold-climate variant | ✓ T1 Ready |
| ISO 9227 Salt Spray 720h | ISO 9227 NSS + ASTM B117 | Anti-corrosion Centrifugal Fan | ✓ T1 Ready |
| ISO 9227 Salt Spray 1,200h (marine) | ISO 9227 NSS 1,200h | Anti-corrosion 316L marine-grade | ✓ T1 Ready |
| R290 (Propane) EMC + ATEX | EN 60335-2-40 + ATEX 2014/34/EU | EC Axial Fan R290 variant + ASHP | ◐ T2 Scheduled 2026 Q3 |
| Modbus + BACnet Interoperability | Modbus RTU + BACnet MS/TP | All EC fans + ASHP | ✓ T1 Ready |
| EHPA Quality Label Validation | EHPA HP KEYMARK + Quality Label | Air Source Heat Pump (EU) | ✓ T1 Ready |
3 flagship cases · 40,000+ units, 18 months, 3 continents
Three flagship deployments — EU residential OEM / NA cold-climate / China industrial high-temp — totaling 40,000+ units delivered in 18 months, defining LONGWELL's position in the heat pump market.
EU Top-5 Residential Heat Pump OEM
Tier-1 European heat pump manufacturer, €4B+ annual revenue, selling ~400,000 units in DE/FR/IT/ES in 2024. Customer name disclosable under separate NDA. Data verified by LONGWELL PMO and confirmed by customer procurement.
Project Context & Hard Requirements · Q3 2024
- Mandatory ErP upgrade — new 8/12/16 kW residential models must reach A+++ (SCOP ≥ 5.0); the existing Ebmpapst Ø500 EC solution caps at A++ (SCOP 4.6).
- Noise + R290 compatibility — outdoor unit night silent Lw ≤ 48 dB (current 52 dB) · R290 EN 60335-2-40 intrinsically safe · -25°C cold start 100% pass.
- Tight schedule — first 5,000 units in 12 weeks, remaining 23,000 units across 6 months (REPowerEU capacity expansion window).
Project Outcomes · Technical + Commercial
| Metric | Required | Achieved |
|---|---|---|
| Overall SCOP upgrade | ≥ 5.0 (A+++) | 5.18 |
| Fan SFP reduction | ≥ 15% | 21.4% |
| Outdoor noise Lw night mode | ≤ 48 dB | 46.2 dB |
| R290 EN 60335-2-40 certification | Pass | All 28,000 units passed |
| -25°C cold-start success rate | 100% | 100% (12 months zero field failures) |
| First 5,000-unit delivery | 12 weeks | 10 weeks (ahead of schedule) |
| Frame agreement | — | 2025-2028 four-year, 50,000 min/yr |
| Ebmpapst share displacement | — | 100% Ebmpapst → 65% LONGWELL + 35% Ebmpapst dual-source |
North American Cold-Climate Heat Pump OEM
US Midwest-based heat pump manufacturer (MN/WI/IL/ND markets). 2024 IRA $2,000-per-unit rebate + state carbon-neutral mandates drove a 3× order surge. Project executed 2024-2025.
LONGWELL Solution + Project Outcomes
- Outdoor condenser — EC Axial Fan LWAE3G-560 cold-climate variant × 1 unit/system, driver pre-heat + 130% starting torque.
- Indoor end — EC Cross Flow Fan Ø 80×1,200 × 1 unit per indoor head, ≤ 30 dB bedroom-grade silent.
- AHRI 1230 + ETL certification — Ningbo SGS pre-testing + US Intertek formal AHRI submission, first-pass certification.
| Total units | 12,000 sets (outdoor + indoor complete) = 24,000 fan pieces |
| Delivery duration | 5 months (customer required 7 months) — 2 months ahead |
| -25°C cold-start field validation | 12 months × 12,000 units → zero cold-start failures |
| AHRI 1230 cold-climate certification | First-pass certification (originally planned 2 rounds) |
| Cost vs Carrier OEM components | 42% cost reduction + 13-month lead time advantage |
| Follow-on | 2026 additional 25,000-unit framework agreement |
China Huadong Industrial High-Temp Heat Pump EPC
Jiangsu fine chemical plant, ¥5B annual revenue, launching a 2024 steam boiler replacement project under China's dual-carbon mandate — industrial high-temp heat pumps (80°C output) replace natural gas steam boilers. Unit capacity 150 kW × 8 units (1.2 MW total); some workshops are ATEX Zone 2.
LONGWELL Solution + Project Outcomes
- Outdoor evaporator — EC Axial Fan Ø 800 × 4 units/system, 32 units total, high-temp +60°C standard variant.
- Indoor condenser — Backward Curved EC Fans (LWBE3G) Ø 355 × 8 units (high-temp +80°C variant), SS bearings + F-class insulation.
- Zone 2 workshop ventilation — ATEX explosion-proof variant × 12 units, II 3G + 316L SS impellers.
- Partial complete unit integration — 2 of 8 systems delivered as LONGWELL ODM Air Source Heat Pump (customer nameplate); 6 systems use customer compressor + LONGWELL complete airflow path.
| Total fan units | 52 pieces (32 outdoor + 8 indoor + 12 workshop) + 2 ODM complete units |
| Delivery duration | 6 months (customer required 8 months) — 2 months ahead |
| Output temperature measured | 82°C steady state (required 80°C) |
| Overall COP measured | 3.4 (required ≥ 3.0) |
| Steam boiler natural gas annual savings | ¥12M / year + 4,800 tons CO₂ emission reduction |
| Follow-on | EPC phase 2/3 locked |
3-Case Pattern
LONGWELL's heat pump position is defined by three consistent patterns: (1) solving customer hidden pain points (ErP upgrade / cold-climate / industrial high-temp) — pain points that price competition alone cannot solve; (2) 90-day NPI vs 9 months — customer ErP upgrade windows, IRA Act windows, and dual-carbon mandate windows are all time-limited, so delivering 1-2 months ahead is irreplaceable value; (3) dual fans + complete unit capability — customers can flexibly choose OEM fans or ODM complete units to adapt to different strategic phases.
Heat pump-specific engineering support tools
Unified engineering tools across the 5 fans + ASHP complete unit — shared Modbus register maps, shared CAD interfaces, ErP / SCOP system-level calculation services.
| Tool | Purpose | Access |
|---|---|---|
| ErP / SCOP System Calculator | Input heat pump capacity + operating conditions + customer compressor COP → returns fan configuration + overall SCOP prediction + ErP rating (A+ / A++ / A+++) | Free |
| Heat Pump Outdoor CFD Service | Customer provides outdoor 3D model → LONGWELL delivers full-operating-condition CFD + fan layout + noise prediction + defrost cycle simulation | Free for project-intent |
| AHRI 1230 Cold-Climate Cert Support | NA customers entering AHRI 1230 cold-climate cert: LONGWELL provides -25°C startup data + Ningbo SGS pre-testing + Intertek collaboration | Free for NA customers |
| EHPA Quality Label Support | EU customers entering EHPA cert: LONGWELL provides complete EN 14511 + EN 12102 test package + TÜV Rheinland collaboration | Free for EU customers |
| 3D CAD Library + Interface Templates | 5-product STEP / IGES / Parasolid full sizes + coastal version + cold-climate version interface dimensions + outdoor enclosure mounting drawings | Available post-NDA |
| Modbus + BACnet Protocol Manual | LONGWELLBUS register tables + mainstream master controller (Carel / Danfoss / Siemens) validation checklist | Available post-NDA |
On-site Field Application Engineering
Tier-1 customers receive on-site Field Application Engineering: European engineers deploy 2-4 weeks at the customer factory for EHPA acceptance + Modbus commissioning + customer product engineer training. NA engineers serve US / Canada cold-climate customers. China + APAC are covered by Shanghai + Ningbo teams. ODM complete unit projects receive additional first-batch 100-unit pilot production guidance.
90-day custom NPI + reliability
If standard configurations don't fully match your heat pump application, LONGWELL offers a structured 90-day custom NPI cycle. Advantage vs European competitors: Ebmpapst / Ziehl-Abegg standard NPI for heat pump fan customization is 9-15 months; LONGWELL is 90 days. ASHP complete unit ODM cycle: 120-150 days.
| Stage | Engineering Actions | Customer Involvement |
|---|---|---|
| S1 · Day 1-14 Requirements | Heat pump capacity + application + ErP / AHRI targets + regional market + main control vendor | Provide unit capacity / application / regional market / target certifications / main control vendor · 1-2 meetings |
| S2 · Day 15-45 CFD + SCOP | Overall CFD + ErP / SCOP system-level calculation + 3D models | LONGWELL leads; customer receives CFD simulation + overall SCOP prediction + fan spec + ErP rating |
| S3 · Day 46-70 Samples + DV | Engineering samples + integration + DV | 3-5 samples + customer factory integration + joint cold-start validation + noise measurement |
| S4 · Day 71-90 PV + Production | DV/PV completion + third-party certification + first order delivery | EHPA / AHRI / EN 14511 / EN 12102 third-party testing + production process documentation + first batch order |
Pre-Shipment Reliability (Heat Pump-Specific)
100% In-Line Performance Test
Every unit: airflow / pressure / RPM / current / vibration / noise / starting torque; data stored in MES linked to serial number.
EC Cold-Start Validation
Cold-climate variant: every unit 100% -25°C cold-start tested; data included in shipping documentation.
ErP Rating 100% Individual Cert
EU shipments include an individual ErP performance data card per unit; TÜV Rheinland / SGS 1% sample audit.
R290 EMC 100% Validation
R290 intrinsically safe variant: every unit EN 60335-2-40 EMC scan + ESD test.
Warranty Policy (Heat Pump-Specific)
| Commitment | Terms |
|---|---|
| Standard warranty | Heat pump applications start at 36 months (matches EU consumer protection 24+12 months) |
| Tier-1 OEM extended warranty | 60-84 months (matches heat pump 7-10 year warranty) |
| MTBF commitment | 80,000 hours @ 40°C (heat pump 8-10 year project cycle at 8,000 h/yr operation) |
| L10 accelerated aging (batch) | Per batch: 5 units × 2,000 h + 60°C accelerated aging, L10 = 80,000h @ 40°C |
| Regional VMI | Tier-1 OEM projects ≥ 5% project volume + 36-month critical parts 100% backward compatibility |
| 8D field response | 24h acknowledgment → 5-business-day root cause → 15-business-day corrective + emergency 48h engineer on-site |
4 engagement paths
Four ways to move from this Industry Pack to a working partnership, mapped to customer type: Tier-1 OEM / mid-tier OEM complete unit ODM / EPC integrator / industrial heat pump operator.
Tier-1 OEM Fan Joint R&D
Sign NDA → provide heat pump spec + regional market + certification targets → LONGWELL delivers SCOP / ErP calculation + CFD + custom fan spec → joint R&D launch + framework agreement.
Mid-tier OEM Complete Unit ODM
New entrants — HVAC / heating / cross-industry brands entering heat pump → sign NDA → select Air Source Heat Pump model → customer nameplate + packaging + main control customization → first shipment in 3-6 months.
Commercial Project EPC
EPC contractor / owner → sign NDA → project operating-condition review + design support → outdoor + AHU + FCU complete fan BOM + partial complete unit ODM + on-site project engineering.
Industrial High-Temp Heat Pump
Chemical / food / pulp / steel EPC project parties → sign NDA → process review + ATEX / high-temp evaluation → industrial-grade fans + ATEX explosion-proof + 316L SS + partial complete unit ODM.
Heat Pump Sales Contacts
Quiet Outdoors. Warm Indoors.
Engineered for the Electrification Era.
Fans + complete units. OEM + ODM + Hybrid modes. Where electrification scales, LONGWELL keeps it efficient, quiet, and reliable.