SINCE 1990
Residential Ventilation
One-Stop Fan Platform
Engineering ≤ 25 dB bedroom-grade silence + Matter 1.2 smart home + 92% Passivhaus heat recovery for the home — six product series covering HRV/ERV whole-house, apartment wall-mount, smart home, kitchen + bath exhaust, and air purifier. Quiet Air. Clean Air. Smart Air.
Why LONGWELL for Residential Ventilation
Residential ventilation fans operate inside bedrooms, living rooms, and nurseries — spaces where users spend long durations. They demand bedroom-grade silence, full multi-ecosystem smart home support, premium real estate mass-production capability, and integrated IAQ sensors and controllers. LONGWELL is one of the few Chinese fan manufacturers that delivers all four — at just 60-70% of European brand pricing.
Bedroom-Grade ≤ 25 dB Silent Engineering
CFD-optimized sickle blades + damped rubber-suspended motor + intelligent vibration-avoiding speed curves. Residential variant 22-28 dB — matching Japanese Sanyo Denki / German Ebmpapst silent versions at only 60-70% of their price.
Matter 1.2 + Smart Home Multi-Ecosystem
DC Centrifugal smart variant integrates Matter 1.2 (commercialized 2024) + Mijia pre-integrated. OEMs connect Apple Home + Google Home + Mijia simultaneously without development — compressing 6-9 months of certification.
Premium Real Estate 30,000-Unit Mass Production
Ningbo manufacturing base produces 80,000 residential fans/month; single-batch 30,000 units delivered 4-6 weeks vs Zehnder / Komfovent European imports 12-18 weeks. Top-5 (Vanke / Longfor / Greentown / Poly / China Resources) total 500,000+ units annually.
IAQ Sensor + Controller Integrated
PM2.5 / CO2 / VOC sensor interfaces on the DC Centrifugal smart variant + Temperature Controller co-supplied — OEM single-source smart ventilation creation, simplifying BOM by 35% and shortening time-to-market by 6 months.
Single-Supplier Whole-House Ventilation
6 product series cover HRV + apartment + smart home + kitchen+bath + air purifier. All EC platforms share Matter / Modbus register maps — customer main control integrates once, compatible across all whole-house devices.
Why Residential Ventilation is LONGWELL's Strategic Growth Engine
To residential ventilation OEMs, premium real estate developers, and smart home partners:
Modern people spend 90% of time indoors — and fans determine the air quality and sleep quietness of every home. The global residential ventilation market is €18B in 2024, projected to €34B by 2030 (CAGR 11.2%).
Three drivers push LONGWELL into this space: (1) EU ErP Lot 6 regulation upgrade + Passivhaus mandates 90%+ heat recovery for energy homes — by 2030 all new EU residential builds must include HRV/ERV; (2) North American California wildfires + US East Coast Canadian wildfire smoke drive 4× growth in air purifier + HEPA integration over 5 years, with Energy Star Most Efficient upgrades putting fan SFP at 30% of overall efficiency; (3) China premium real estate trend — Vanke / Longfor / Greentown / Poly raised pre-decoration rate from 50% to 85%, ventilation systems shifted from top-tier option to standard for 900,000+ sqm projects, with ¥60B domestic investment projected 2025-2028.
This Pack documents our solutions and engagement models. §1 covers the 5-application architecture and product mapping; §2-§3 map the 6 fan products to the 5 residential scenarios; §4 presents three anonymized flagship customer cases (EU Passivhaus / NA wildfire air purifier / China premium real estate); §5 and §6 cover engineering support and engagement paths.
5-Application Architecture & Product Mapping
Each of the 5 residential ventilation applications has distinct sound, smart home integration, IAQ, and aesthetic requirements. LONGWELL maps a purpose-engineered fan series to each application — from bedroom-quiet HRV cores to grease-resistant kitchen blowers.
Whole-House HRV/ERV
Whole-House HRV/ERV
Villa / large flat / passive house. Backward Curved EC + AHU integration, 92% heat recovery.
Apartment Ventilation
Apartment Ventilation
Urban apartment / high-rise renovation. EC Cross Flow + DC Centrifugal compact units.
Smart Home Ventilation
Smart Home Ventilation
Matter / Apple HomeKit / Google Home / Mijia. DC Centrifugal with built-in IAQ sensors.
Kitchen + Bath Exhaust
Kitchen + Bath Exhaust
Range hood + bath fan. Forward Curved Centrifugal + AC Axial for grease / humidity environments.
Air Purifier Integration
Tower / standing air purifier. HEPA H13/H14 + UV + PM2.5/VOC monitoring. DC Cooling Fan compact + ≤ 28 dB bedroom-quiet. CADR 400+ premium flagship.
6-Product Solutions · Application Mapping
Exact fan configuration for every residential ventilation application — matched to noise targets, smart home ecosystem, customer tier, and certification matrix.
5 Applications × LONGWELL Product Mapping
| App | Scenario | Env. Requirements | LONGWELL Products | Use |
|---|---|---|---|---|
| ① | HRV/ERV Whole-House | ≤ 28 dB bedroom-grade · 92% heat recovery · ErP A++ ducted | Backward Curved EC Fans + AHU | Central + large flat |
| ② | Apartment Ventilation | ≤ 30 dB · Ø 100-150 compact · ductless or short-duct | EC Cross Flow Fan + DC Centrifugal Fan | Wall + window |
| ③ | Smart Home Ventilation | Matter / HomeKit / Mijia · IAQ sensors · APP control | DC Centrifugal Fan (smart) + EC Cross Flow | Smart home |
| ④ | Kitchen + Bath Exhaust | Grease / humidity · ≥ 600 m³/h kitchen · IP44 bath | Forward Curved Centrifugal + AC Axial Fan | Hood + bath |
| ⑤ | Air Purifier | ≤ 28 dB · HEPA H13/H14 · CADR 400+ | DC Cooling Fan (compact) + EC Cross Flow | Tower + standing |
6-Product Engineering Roles
| Product | App | Engineering Role |
|---|---|---|
| Backward Curved EC Fans ★ Flagship | ①+② | HRV/ERV flagship · Ø 190-355 mm · 92% heat recovery · LWBE3G sub-series |
| DC Centrifugal Fan | ③ | Smart home · 12V/24V · Matter 1.2 + onboard IAQ sensors |
| EC Cross Flow Fan | ②+③ | Wall-mounted ventilator · ≤ 25 dB bedroom-grade · ultra-thin depth ≤ 150 mm |
| DC Cooling Fan | ④+⑤ | Air purifier + bath · antibacterial coating · HEPA H13 high-pressure |
| Forward Curved Centrifugal Fan | ④ | Kitchen range hood · +150°C tolerance · grease-resistant PA66+30%GF / 304 SS |
| AC Axial Fan | ④ | Economy bathroom · IP44 · 60-70% lower cost vs EC variant |
▸ BC EC Fans Residential Ventilation Performance Points (HRV Flagship)
| Model | Airflow | Pressure | Power | Application |
|---|---|---|---|---|
| Ø 190 (LWBE3G-190R) | 250 m³/h | 80 Pa | 40 W | Apt 50-80 m² |
| Ø 220 (LWBE3G-220R) ★ | 420 m³/h | 110 Pa | 75 W | Apt 80-120 m² |
| Ø 280 (LWBE3G-280R) | 680 m³/h | 140 Pa | 135 W | Villa 150-250 m² |
| Ø 355 (LWBE3G-355R) | 1,200 m³/h | 180 Pa | 280 W | Large flat + duplex |
★ Ø 220 is the European + Chinese mainstream apartment HRV size; LWBE3G-220R is LONGWELL's #1-selling residential ventilation model.
▸ Full Smart Home Ecosystem Compatibility (Matter 1.2 · Apple HomeKit · Google · Mijia · Tuya)
| Matter 1.2 | ✓ Onboard | Connectivity Standards Alliance cross-ecosystem unified protocol (commercialized Q4 2024) |
| Apple HomeKit | ✓ MFi passed | 30% high-income US households are iPhone + HomeKit users |
| Google Home | ✓ Nest compatible | NA + Europe mainstream |
| Amazon Alexa | ✓ Skills live | NA mass market |
| Xiaomi Mijia | ✓ Native | 80% of China's smart home users |
| Tuya | ✓ Native | SEA + Middle East mainstream brands |
HRV/ERV: 92% Heat Recovery + ErP A++ Energy Home Core
HRV (Heat Recovery Ventilator) and ERV (Energy Recovery Ventilator) are the backbone of modern energy-efficient homes — recovering 80-92% of heat / cooling energy from exhaust air to pre-condition incoming fresh air. EU Passivhaus mandates 90%+ heat recovery efficiency. North American R-2000 / NZE homes increasingly require ERV. The 2030 EU all-new-residential HRV mandate alone creates 50M+ unit demand.
HRV/ERV Engineering Key Challenges
| Challenge | Engineering Requirement |
|---|---|
| 92% heat recovery efficiency threshold | Passivhaus PHI mandates ≥ 90%; fan SFP ≤ 0.45 W/(m³/h). Standard AC platform SFP = 0.8 directly fails; EC IE4+ platform SFP = 0.35 is the A++ entry ticket. |
| ≤ 28 dB bedroom-grade silence | HRVs are typically installed in above-bedroom ceiling space / storage rooms. Complaint sensitivity is 10× higher than commercial fans. |
| Winter anti-freeze strategy | -20°C / -40°C Nordic + Canada cold regions. HRV core internal icing is common — fans must coordinate electric preheat + intermittent bypass / reverse-blow defrost. |
| Smart IAQ linkage | CO2 rise → increase fresh air; high PM2.5 → enter purifier mode; extreme outdoor cold → reduce airflow to protect core; energy-saving / vacation modes. |
| Matter / Mijia smart home | Premium HRVs must connect Apple Home / Google Home / Mijia full ecosystems; Matter 1.2 cross-ecosystem unification. |
LONGWELL HRV/ERV Recommended Configuration
| Subsystem | LONGWELL Product | Typical Scale |
|---|---|---|
| Supply fan (intake) | Backward Curved EC Fans Ø 220-280 | 150-250 m² home = 1 unit LWBE3G-220R main supply |
| Exhaust fan (stale air) | Backward Curved EC Fans Ø 220-280 | Paired with supply for balanced airflow |
| Smart control board | Temperature Controller (HVACR Components) | Matter 1.2 + IAQ sensors + anti-freeze program |
| Large home AHU integration | Air Handling Unit (HVAC Systems) | Luxury / villa 500+ m² whole-house AHU integration |
Apartment: Short-Duct + Compact + Renovation-Friendly
Apartment ventilation differs fundamentally from villa HRV: existing buildings without ductwork, smaller per-unit budget, 4-room floor plans requiring distributed control, and renovation rather than new-build. China's premium real estate (Vanke / Longfor / Greentown) has standardized on per-room wall-mounted EC Cross Flow units since 2022. EU apartment renovation programs (Germany KfW / France MaPrimeRénov) subsidize compact MEV (Mechanical Extract Ventilation) systems.
Apartment vs Villa HRV Key Differences
| Dimension | Villa HRV (ref) | Apartment Ventilation |
|---|---|---|
| Building state | New-build custom ducting | Delivered renovation, no ducting |
| System form | Centralized HRV + ducting | Distributed wall-mounted 1/room |
| Per-unit cost | €3,000-8,000 | €600-1,500 (4 units total) |
| Heat recovery form | Central core 90%+ | Wall mini-core 60-75% |
| User control | One central controller | Per-room independent APP / Mijia |
LONGWELL Apartment Ventilation Recommended Configuration
Wall-Mounted Single-Room
EC Cross Flow Fan Ø 80×900 + HEPA H13 filter + Matter smart variant. 1 unit per room. 4 rooms total €1,200.
Window-Mounted Compact
DC Centrifugal Fan Ø 150 + through-wall window-hole installation. Suits Nordic + Chinese old-house renovation.
Kitchen + Bath MEV
AC Axial Fan Ø 100-150 bath + Forward Curved Fan kitchen exhaust. EU MEV system standard.
China premium real estate ventilation is 90% wall-mounted (vs Europe 90% centralized HRV). Reasons: (1) buildings already delivered, retrofit ducting is difficult; (2) Chinese floor plans typically 2-3 bedroom + living = 4 rooms, per-room wall-mounted vs centralized has no advantage; (3) Chinese users accept per-room distributed control. LONGWELL EC Cross Flow Fan ≤ 25 dB + Ø 80×900 is the best match for this market — 300-500K unit annual demand.
Smart Home Ventilation: Matter 1.2 + IAQ Whole-House Linkage
Smart home ventilation goes beyond simple WiFi remote control — it integrates IAQ sensors, machine-learning user habits, multi-device automation (linking ventilation with AC + air purifier + curtains), and energy optimization. Matter 1.2 (released 2024) is the industry-standard cross-ecosystem protocol that finally enables a single product to work seamlessly with Apple Home / Google Home / Amazon Alexa / Samsung SmartThings simultaneously. Chinese OEMs add Mijia + Aliyun + Tuya. LONGWELL DC Centrifugal Fan smart variant is the first Chinese fan with native Matter 1.2 + Mijia dual-protocol.
Smart Home Ventilation Core Features
Onboard IAQ Multi-Sensor
PM2.5 + PM10 + CO2 + VOC + TVOC + temperature/humidity — 6 items, 1-second data refresh. OEM customers need no external sensors.
Matter 1.2 Cross-Ecosystem
Single product simultaneously listed on Apple Home / Google Home / Alexa / SmartThings, significantly simplifying customer certification + go-to-market process.
Mijia + Aliyun + Tuya
China + SEA ecosystem native support. Mijia covers 80% of Chinese smart home users; Tuya covers SEA + Middle East mainstream brands.
Scene Automation + OTA
Home → increase fresh air / Sleep ≤ 22 dB / Cooking scene coordinated. OTA continuously optimizes IAQ algorithms + Matter 2.0 upgrades — extending product lifecycle 2-3×.
Matter 1.2 Commercial Value
Matter 1.2 (commercialized October 2024) allows a single ventilation product to simultaneously achieve Apple / Google / Amazon / Samsung four-ecosystem certification. Previously this required 4 separate certification processes (6-9 months each + €50K-100K each). LONGWELL DC Centrifugal Fan smart variant ships with pre-integrated Matter 1.2 — OEM customers receive ready-made Apple HomeKit + Google Home dual certification, saving 12-18 months and €200K+ in certification fees. Bonus for Chinese OEMs: Mijia + Tuya are also pre-integrated — one fan = 6 ecosystems compatible.
Kitchen + Bathroom: Grease + Moisture + Silent Triple Constraints
Kitchen range hoods and bathroom exhaust fans represent the highest-volume residential fan applications globally — 100M+ units shipped annually. Kitchen fans face grease + high temperature; bathroom fans face moisture + frequent start/stop. China's kitchen hood market is ¥30B annually with Vatti / Robam / Fotile / Midea dominating. Global premium brands (Bosch / Siemens / Miele / Viking) source from Chinese OEMs. LONGWELL Forward Curved Centrifugal Fan is qualified across major Chinese premium kitchen hood OEMs.
4 Kitchen + Bath Sub-Scenarios
| Sub-Scenario | Engineering Requirement |
|---|---|
| Chinese high-grease kitchen | Chinese stir-fry grease temperature +120°C long-term / +150°C short-term, high airflow 1,000-1,500 m³/h + Forward Curved Fan dual-motor configuration |
| European low-grease kitchen | European pan-fry / bake-focused low grease. Silent priority ≤ 35 dB + 400-700 m³/h airflow + aesthetic design / cabinet-integrated |
| Smart bath-heater | 4-in-1 bath-heater (lighting + heating + ventilation + drying). DC Cooling Fan silent + Bluetooth / Mijia linkage + humidity auto start/stop |
| Apartment silent bath exhaust | AC Axial Fan IP44 moisture-proof + ≤ 30 dB silent + antibacterial coating — economy-grade mass production (affordable / economy apartments) |
LONGWELL Kitchen + Bath Recommended Configuration
| Application | Configuration | Customer Type |
|---|---|---|
| Premium Chinese range hood | Forward Curved Fan Ø 220 dual-motor + 304 SS scroll + +150°C high-temp | Vatti / Robam / Fotile flagship |
| Premium European range hood | Forward Curved Fan Ø 145-180 + PA66+30%GF scroll + ≤ 38 dB silent | Bosch / Siemens / Miele integrated machines |
| Smart bath-heater | DC Cooling Fan Ø 100-120 + Mijia / Tuya integration + long-lasting antibacterial coating + IP44 | Midea / Aopu / Vatti product category |
| Economy bath exhaust | AC Axial Fan Ø 100-150 + IP44 + unit price €5-12 economy-grade | Affordable housing / rental apartment bulk renovation |
Air Purifier: HEPA + UV + Wildfire Emergency
Residential air purifiers (tower / desktop / wall-mounted / ceiling-fan integrated) are the fastest-growing residential air management category. Drivers: (1) PM2.5 awareness in Asia driving 30-40% annual growth; (2) North American wildfire smoke (California / Oregon / Canadian) driving wildfire-grade purifier demand 4× in 5 years; (3) post-COVID indoor air quality awareness sustaining premium purifier sales. Global market reached $13B in 2024, with Dyson / Coway / Sharp / Xiaomi / Levoit dominating.
Air Purifier Fan Core Requirements
| Requirement | Engineering Threshold |
|---|---|
| ≤ 28 dB bedroom-grade | Purifiers typically run 24×7 in living rooms / bedrooms. Premium purifiers ≤ 28 dB is standard. |
| HEPA H13 high-pressure | HEPA H13/H14 filter layer resistance 100-150 Pa reduces airflow 30-40% vs no-HEPA. DC Cooling Fan high-pressure variant required. |
| CADR 400+ premium | Premium purifier CADR (Clean Air Delivery Rate) ≥ 400 m³/h is the entry ticket. Dyson / Coway flagship CADR 600+. |
| Battery-backup emergency | California wildfire season / US East Canadian wildfire / Chinese winter haze — power outage 4-8 hour battery backup is a lifesaving need. |
LONGWELL Air Purifier Recommended Configuration
| Type | LONGWELL Product | Customer Type |
|---|---|---|
| Premium tower purifier (CADR 400+) | DC Cooling Fan Ø 150 + HEPA H13 | Dyson / Coway / Sharp flagship fitment |
| Standing purifier (CADR 250-350) | DC Cooling Fan Ø 120 + HEPA H13 | Mijia / Zwilling / Haier mainstream |
| Smart purifier (with ventilation) | DC Centrifugal Fan + Matter 1.2 | Purifier + ventilation + humidifier 3-in-1 |
| Wildfire emergency purifier (NA) | DC Cooling battery-backup variant | California PG&E emergency lighting + purifier kit |
Residential Ventilation Certifications & Compliance
LONGWELL residential ventilation products ship with the regulatory framework required for global deployment across EU + NA + APAC + China. The matrix below covers all 6 fan products + Temperature Controller + smart home protocols. Gold-marked items are most heavily weighted in residential OEM and premium real estate customer audits.
| Certification | Standard | Applicable Products |
|---|---|---|
| CE / UKCA | EU Machinery / EMC / LVD + UK MCR | All 6 fans + Temperature Controller |
| ErP Lot 6 ★ | EU 1253/2014 + 1254/2014 residential HRV/ERV Ecodesign | BC EC Fans + DC Centrifugal + EC Cross Flow |
| Passivhaus PHI ★ | Passivhaus Institut energy housing ≥ 90% heat recovery + SFP ≤ 0.45 | BC EC Fans (LWBE3G HRV flagship) |
| Energy Star Most Efficient ★ | US EPA premium ventilation + purifier top label | BC EC + DC Cooling (NA market) |
| HVI 920 | NA Home Ventilating Institute certification | All fans (NA market required) |
| ASHRAE 62.2 | NA residential ventilation rate standard | All fans (NA + Energy Star linked) |
| ETL / UL 507 | NA electrical safety (fan / purifier) | All fans + Temperature Controller (NA) |
| GB/T 18801-2022 ★ | China air purifier national standard + Tier-1 efficiency | DC Cooling + BC EC (China market) |
| GB 50736 | China residential heating/ventilation + ventilation mandate | All fans (China premium real estate) |
| Matter 1.2 ★ | Connectivity Standards Alliance protocol | DC Centrifugal Fan smart variant |
| Apple HomeKit / Google Home | Apple MFi + Google Nest certification | Via Matter 1.2 single-cert multi-ecosystem |
| ISO 9001 / 14001 / 45001 | Quality / environment / occupational safety | ✓ Certified |
Residential Ventilation Test Report Library
T1 = PDF within 1 business day; T2 = scheduled at named lab with confirmed delivery date. T1-T2 reports are complimentary for project-intent customers (NDA signed or RFP issued).
| Test Type | Standard | Coverage | Status |
|---|---|---|---|
| ErP Lot 6 residential HRV/ERV | EU 1253/2014 + 1254/2014 | BC EC + DC Centrifugal | ✓ T1 Ready |
| Passivhaus PHI 92% heat recovery | PHI Component + EN 13141-7 | BC EC Fans LWBE3G HRV variant | ✓ T1 Ready |
| Energy Star Most Efficient | ENERGY STAR HRV/ERV standard | BC EC + DC Cooling (NA) | ✓ T1 Ready |
| HVI 920 full test suite | HVI 920 + ASHRAE 51 / AMCA 210 | All fans (NA market) | ✓ T1 Ready |
| ≤ 22 dB bedroom acoustic | ISO 3744 + EN ISO 13347 | BC EC + DC Centrifugal + Cross Flow | ✓ T1 Ready |
| GB/T 18801 China purifier std | GB/T 18801-2022 + Tier-1 efficiency | DC Cooling Fan purifier variant | ✓ T1 Ready |
| Matter 1.2 protocol interop | CSA Matter 1.2 + multi-ecosystem | DC Centrifugal Fan smart variant | ✓ T1 Ready |
| 100,000 start/stop cycle life | Internal accelerated aging + Weibull | DC Cooling + AC Axial (bath / heater) | ✓ T1 Ready |
| Range hood +150°C high-temp | Internal high-temp 8h continuous test | Forward Curved Fan range hood variant | ✓ T1 Ready |
| ASHRAE 62.2 residential ventilation | ASHRAE 62.2-2022 NA mandatory | All fans (NA market) | ◐ T2 Scheduled 2026 Q3 |
3 Cases Defining LONGWELL's Residential Ventilation Position
Three flagship deployments across EU Passivhaus, NA wildfire emergency, and China premium real estate — totaling 230,000+ units deployed in 18 months across 3 continents.
Case 1: EU Passivhaus HRV Program
German Tier-1 Passivhaus equipment OEM supplying HRV/ERV to certified Passivhaus developers across 7 countries (DE/AT/CH/NL/DK/SE/FI). Customer name disclosable under separate NDA. Project executed 2024-2025.
Project Context & Pressures
Following the 2024 EU ErP Lot 6 upgrade + Passivhaus PHI re-evaluation, 80% of the customer's existing product lineup was legacy SFP 0.6 W/(m³/h) and had to be redesigned to SFP ≤ 0.45 to retain Passivhaus certification. Ebmpapst / Ziehl-Abegg upgraded-fan pricing came in 45-60% higher with 12-18 month lead times — the customer couldn't absorb the cost and would miss the 2025 new-Passivhaus bid window.
LONGWELL Solution Core
BC EC Fans LWBE3G-220R Passivhaus variant (new design SFP 0.38 + silent blade profile + damped-suspended motor + -40°C Nordic lubrication) + 6-week joint acceptance at customer's Munich tech center + Passivhaus Institut on-site testing. The customer's 2025 new Passivhaus builds (DE 600 homes + AT 300 + other 5 countries 300) all use LONGWELL.
Technical & Commercial Outcomes
| Metric | Required | Achieved |
|---|---|---|
| SFP (Specific Fan Power) | ≤ 0.45 W/(m³/h) | 0.38 (16% over-target) |
| Heat recovery efficiency (fan + core) | ≥ 92% | 93.5% (PHI certified) |
| Bedroom-grade noise | ≤ 28 dB | 24.2 dB measured |
| -25°C winter validation | Reliable startup | -40°C test passed |
| Passivhaus PHI certification | Component cert | 'Highly Efficient' first-pass |
| First batch 800 unit delivery | 16 weeks | 12 weeks completed early |
| Unit price vs Ebmpapst | ≤ €85 | €82 (vs €145, -43%) |
| 2026-2028 rolling orders | — | +18,000 units + 5-year framework |
Case 2: North American Wildfire-Grade Air Purifier
US-based premium air purifier brand serving California / Oregon / Washington markets through Costco / Best Buy / Amazon / DTC. Customer name disclosable under separate NDA. Project executed 2024-2025.
Project Context
The 2024 California wildfire season (LA Palisades + Northern California fires) caused statewide AQI > 300 hazardous levels for 4 weeks. The customer's wildfire-grade purifier sales surged +480% YoY but stock was critically depleted. Honeywell / Dyson / Coway mainstream brands all use imported fans (Ebmpapst / Sanyo Denki) — upgraded emergency-variant lead times ran 9-12 months at $48-65/unit, well above the customer's gross-margin ceiling ($25-32 needed).
LONGWELL Solution + Outcomes
| Metric | Actual |
|---|---|
| Total units | 5,000 DC Cooling + 8,000 smart upgrades + Energy Star + HVI 920 certification |
| First-batch lead time | 3 weeks complete (customer asked for 4 weeks) — emergency stock mode |
| CADR measured | 455 m³/h (required ≥ 400) + noise 26 dB |
| Energy Star Most Efficient | First-pass certification + industry-first wildfire-grade Most Efficient product |
| Battery backup | 12V DC + 25 Ah lithium, 6-8 hour continuous operation during power outage |
| Unit price vs Ebmpapst | $28 (vs $58, -52%) |
| Costco channel entry | Energy Star label enabled 800-store entry + customer revenue +320% YoY |
| Follow-up cooperation | 2026 additional 25,000-unit annual order + 3-year strategic framework |
Case 3: China Premium Real Estate Wall-Mounted Ventilation
Top-3 Chinese real estate group (¥350B annual revenue) executing whole-house premium ventilation across 12 city-level high-end projects (¥40K-120K/m²) in Yangtze River Delta + Pearl River Delta + Beijing / Xi'an / Chengdu. Customer name disclosable under separate NDA.
Project Context
2024 MOHURD pre-decoration mandates + high-end project competition required ventilation systems as differentiation across 12 city-level projects. Customer pain points: (1) 12 projects distributed + diverse floor plans 90-280 m² needed flexible distributed wall-mounted vs centralized HRV; (2) 80% of the premium customer base were Mijia / Aqara smart home users, so ventilation had to be Mijia-integrated; (3) Soler & Palau / Zehnder imports ran ¥6,000-8,000 per unit while the customer needed a ¥2,000-3,500 plan; (4) annual order 30,000 units with 60-day delivery pressure.
LONGWELL Solution + Outcomes
| Metric | Actual |
|---|---|
| Total units | 210,600 fan units (90K Cross Flow + 600 BC EC + 90K Cooling + 30K Forward Curved) |
| Delivery duration | 12 months phased delivery (matching 12 city project handover schedules) |
| Per-home cost | ¥2,800 (target ¥2,000-3,500) vs Soler & Palau ¥7,200 — gross margin +18 pp |
| Mijia integration | 100% owner Mijia auto-pair upon move-in — zero connection complaints |
| GB/T 18801 Tier-1 efficiency | 100% pass + complete inspection reports |
| Owner satisfaction | 96% owner satisfaction in customer internal survey |
| Follow-up cooperation | 2026 locked 50,000-home additional order + 3-year strategic framework |
LONGWELL's residential ventilation position is defined by three consistent patterns: (1) solving customer regulatory upgrade pain points (EU ErP Lot 6 / NA Energy Star Most Efficient / China premium real estate GB/T 18801) — all developer hard-compliance requirements; (2) smart home ecosystem integration capability (Matter 1.2 / Apple HomeKit / Mijia) — LONGWELL is one of few Chinese fan manufacturers offering multi-ecosystem pre-integration; (3) dual cost + lead-time pressure — 43-61% lower than EU / US / Japan Tier-1 with 6-12 month shorter lead time.
Residential Ventilation Engineering Support
LONGWELL backs residential ventilation customers with engineering tools and a structured 90-day NPI cycle — covering ErP / Passivhaus / Energy Star certification, Matter 1.2 smart home integration, ≤ 25 dB acoustic engineering, and IAQ algorithm support.
| Tool | Purpose | Access |
|---|---|---|
| ErP Lot 6 SFP calculator | Residential HRV/ERV SFP ≤ 0.45 W/(m³/h) entry threshold + A to A++ rating one-click calculation + ErP database | Free download |
| Passivhaus PHI certification support | German PHI lab certification proxy + 92% heat recovery testing + 'Highly Efficient' label acquisition | Free for project-intent |
| Energy Star Most Efficient | US EPA Most Efficient top-label certification + Intertek / TÜV NA third-party test support | Project-intent support |
| HVI 920 certification support | NA HVI 920 standard full test suite + LONGWELL fan companion data package | Project-intent support |
| Matter 1.2 smart home integration | Matter 1.2 over Wi-Fi / Thread dual-protocol + Apple HomeKit MFi + Google Home + Mijia + Tuya interoperability test | Available after NDA |
| IAQ algorithm SDK | PM2.5 + CO2 + VOC + TVOC 6 items onboard + customer custom IAQ algorithm + OTA remote upgrade | Available after NDA |
| 3D CAD model library | STEP / IGES / Solidworks / Inventor all formats + NDA-signed customer 24h access | Available after NDA |
| Acoustic CFD optimization service | Residential ≤ 22 dB bedroom-grade acoustic engineering + CFD-optimized blade profile + damped suspension design | Free for project-intent |
| Real estate BIM integration | China premium project Revit / BIM whole-house integration + Vanke / Longfor / Greentown standardization | Project-intent support |
90-Day NPI New Product Introduction (Residential Ventilation)
| Stage | Engineering Actions | Deliverable |
|---|---|---|
| S1 · Day 1-14 Discovery | Residential market research (Passivhaus / Energy Star / premium real estate) + smart home ecosystem selection (Matter / Mijia / HomeKit) + noise / IAQ / energy targets | Baseline selection parameters + customer PDR |
| S2 · Day 15-45 Design | CFD + acoustic optimization design (≤ 22 dB bedroom-grade) + SFP calculation + Matter protocol firmware development + IAQ algorithm customization | 3D structure + protocol interface + customer design review |
| S3 · Day 46-70 Validation | Sample production + DV (Passivhaus / Energy Star / HVI 920 pre-test) + customer lab joint acoustic testing | 3-12 samples + 24h bedroom-grade acoustic validation |
| S4 · Day 71-90 Pilot | PV production validation + Passivhaus PHI / Energy Star Most Efficient / HVI 920 / GB/T 18801 Tier-1 full certification first-pass | First batch 100-500 unit pilot order delivery |
Warranty Policy (Residential Ventilation)
| Commitment | Terms |
|---|---|
| Standard warranty period | 36 months (3 years, residential consumer products standard) |
| Tier-1 OEM extended warranty | 60-84 months (5-7 years, framework agreement customers) + smart home OTA 5-year support |
| MTBF target | 60,000 hours (DC Cooling / AC Axial) → 80,000 hours (BC EC / DC Centrifugal) |
| Smart home OTA upgrade | Matter / Mijia / HomeKit firmware remote upgrade 5-year support, including Matter 2.0 and new-protocol compatibility upgrades |
| ≤ 22 dB bedroom-grade per-unit verification | Residential ventilation exclusive — every fan individually measured in semi-anechoic chamber, data recorded to SN code traceable |
| Field response | 24h 8D investigation response + 48h spare parts dispatch + on-site technical support if necessary |
| Premium real estate owner aftercare | Vanke / Longfor / Greentown owner aftercare support: project-level centralized maintenance + 3-business-day on-site |
"LONGWELL doesn't just supply fans — they engineered our entire smart ventilation product line: Matter 1.2 integration, ≤ 22 dB acoustic validation, Passivhaus PHI cert, and a 36-60 month warranty. We outsource what's hard, they own the execution."
— VP Engineering, German Tier-1 Passivhaus OEM (disclosable after NDA)
Four Engagement Paths
Four ways to move from this Industry Pack to a working partnership — choose the one that fits your company type and starting point.
Tier-1 HRV / Purifier OEM Joint R&D
Sign NDA → provide HRV / purifier / smart home specs + regional market + cert targets → LONGWELL completes Passivhaus / Energy Star / Matter 1.2 full-stack validation + CFD + fan customization → joint R&D kickoff + framework agreement.
Mid-Size OEM Regulatory Upgrade
HRV / purifier / bath-heater OEM facing EU ErP Lot 6 / Passivhaus / Energy Star upgrade → sign NDA → existing product spec evaluation → LONGWELL upgrade fan solution + re-certification support.
Premium Real Estate Ventilation EPC
Vanke / Longfor / Greentown / Poly / China Resources premium project EPC → sign NDA → project floor plans + standardization + BIM integration → wall-mounted distributed fans + HRV + bathroom + kitchen total BOM + Mijia integration.
Smart Home Ecosystem OEM
Smart home brands (Mijia / Aqara / Tuya / Levoit / Coway) → sign NDA → Matter 1.2 + Mijia + HomeKit full protocol pre-integration → LONGWELL smart variant fan solution + IAQ algorithm SDK.
Residential Ventilation Sales Contacts
Built for the home you live in. Engineered by LONGWELL.
Fans + Temperature Controller. Matter 1.2 + Passivhaus + Energy Star ready. Backward Curved EC · DC Centrifugal · EC Cross Flow · DC Cooling · Forward Curved · AC Axial. Where homes need quiet air, LONGWELL keeps it silent, efficient, and smart.