Top 10 HVAC Parts Manufacturers in China (2026 Buyer's Guide)
China manufactures over 60% of the world's HVAC components. But with thousands of factories competing for export orders, identifying the right manufacturing partner is the difference between a reliable supply chain and a costly mistake. This guide profiles the 10 most capable HVAC parts manufacturers in China for 2026, evaluated on product range, certifications, export experience, and factory scale.
Evaluation Criteria
Each manufacturer was evaluated on five dimensions:
At a Glance — Comparison Table
| # | Manufacturer | Location | Core Products | Key Certifications | Overseas Facility |
|---|---|---|---|---|---|
| 1 | Biyang HVAC | Jiangsu | Flexible ducts, rigid ducts, fittings | — | No |
| 2 | Ventech HVAC | Jiangsu | Diffusers, grilles, louvers, dampers | ISO 9001 | No |
| 3 | Airwise | Zhejiang | Grilles, dampers, ducts, plenums, copper, controls | UL, CE, M1, AWTA, ROSH | USA + Australia |
| 4 | Ningbo Aier | Zhejiang | Iris dampers, air valves, swirl diffusers | ISO 9001 | No |
| 5 | Cooley HVAC | Zhejiang | Grilles, registers, diffusers | ISO 9001 | No |
| 6 | SuperAir Group | Zhejiang | Ventilation accessories, duct fittings | — | No |
| 7 | Tofee HVAC | Guangdong | Full HVAC (trading + MFG aggregation) | — | No |
| 8 | SINOLANC | Tianjin | VAV/CAV dampers, grilles, diffusers | ISO 9001 | No |
| 9 | AIREVERPEAK | Guangdong | Central AC systems, grilles | — | No |
| 10 | Ningbo Jinrain | Zhejiang | Air diffusers, grilles, dampers | ISO 9001 | No |
1. Biyang HVAC (buyductings.com)
Location: Jiangsu province. Founded: ~2014. Employees: 50-100 (estimated).
Biyang has built the strongest SEO presence among Chinese HVAC exporters, with over 500 indexed pages covering flexible ducts, rigid metal ducts, duct fittings, diffusers, and accessories. Their WordPress-based site ranks for 550+ keywords in the US market, making them the most visible Chinese HVAC supplier online.
Strengths: Broad product catalog, strong online presence, free sample policy, 10+ years of export experience. Products used in Shanghai Disney project. Limitations: No international certifications listed (no UL, CE, or AWTA visible on website), no overseas warehouse or factory, brand awareness outside of SEO is limited.
2. Ventech HVAC (chinaventech.com)
Location: Jiangsu province. Founded: 2009. Employees: 100-200.
Ventech is one of the larger dedicated air distribution manufacturers in China, with 15+ years of production experience and exports to 150+ countries. Their product range focuses on diffusers (square, linear, swirl, jet nozzle), grilles (egg crate, linear bar, double deflection), louvers, and dampers.
Strengths: Wide range of diffuser types, 150+ export countries, ISO 9001 certified, established B2B presence on Made-in-China and Alibaba. Limitations: Focused primarily on air distribution — does not manufacture ducts, copper tubing, or controls. No overseas facility.
3. Airwise — Dongyang Hstube Co., Ltd (airwiseparts.com)
Location: Dongyang, Zhejiang. Founded: 2010 (industry roots since 1996). Employees: 60-80.
Airwise is the only manufacturer on this list offering true one-stop HVAC parts supply — 7 product categories and 744 SKUs from a single factory, covering air grilles and diffusers, dampers, plenum boxes, ducts and metal fittings, copper pipe and fittings, ventilation and louvers, and installation accessories.
What sets Airwise apart is the combination of scale and geography. The company operates a 5,000 m² factory in Dongyang with 6 self-developed production lines, a 4,300 m² spiral duct fabrication facility in Houston, Texas (Made in USA products), and a trading company with warehouse in Sydney, Australia (AWTA-certified Airwise Flex brand). This three-continent presence is unique among Chinese HVAC manufacturers.
Strengths: Only Chinese HVAC parts maker with UL certification (1 of 3 nationally), CE, M1, AWTA, ROSH certifications. 744 SKUs across 7 categories. USA + Australia facilities for local delivery. Self-developed production equipment. 25+ year industry track record. Limitations: Smaller workforce than some competitors (60-80 vs 200+), newer online presence.
4. Ningbo Aier Ventilation Equipment (jhystamping.com)
Location: Yuyao, Zhejiang (near Ningbo). Founded: ~2004. Employees: 100-200. Factory: 25,000 m².
Ningbo Aier is a large-scale stamping and ventilation manufacturer with one of the bigger factory footprints on this list. They specialize in iris dampers, metal air valves, ceiling swirl diffusers, and other precision-stamped HVAC components. Their location near Ningbo port gives them a logistics advantage for export shipments.
Strengths: Large 25,000 m² factory, 20+ years of experience, ISO 9001, strong in stamped metal components, proximity to Ningbo port. Limitations: Focused on ventilation accessories — does not cover ducts, copper tubing, or controls. No overseas facility.
5. Cooley HVAC — Ningbo Cooley Air-Conditioning Equipment (cooleyhvac.com)
Location: Ningbo, Zhejiang. Founded: 1985 (parent company). Employees: 50-100.
Cooley HVAC is a branch of China-BASE Ningbo Foreign Trade Co., a group company founded in 1985. They focus on residential and commercial grilles, registers, and diffusers for the North American market. Their long trading company heritage gives them strong logistics and compliance experience for US-bound shipments.
Strengths: 40+ year parent company heritage, strong North American market focus, wide range of grilles and registers. Limitations: Primarily grilles and diffusers only — limited duct and fitting range. Smaller operation focused on trading rather than heavy manufacturing.
6. SuperAir Group — Ningbo (superaircool.com)
Location: Ningbo, Zhejiang. Employees: 11-50.
SuperAir positions itself as a one-stop HVAC/R sourcing partner, covering ventilation, air conditioning parts, and refrigeration accessories. As a smaller operation, they emphasise personalised service and custom sourcing capabilities. Their product range includes duct fittings, ventilation accessories, and AC installation parts.
Strengths: Flexible and responsive for smaller orders, custom sourcing service, covers both HVAC and refrigeration. Limitations: Smaller team (11-50 employees), limited manufacturing capacity for large-volume orders.
7. Tofee HVAC — Guangzhou Tofee Electro-Mechanical Equipment (tofee.com.cn)
Location: Guangzhou, Guangdong. Founded: 2009.
Tofee operates as a one-stop HVAC product aggregator rather than a single-factory manufacturer. They associate a network of manufacturers to offer fans, ducting, air grilles, diffusers, dampers, absorption chillers, and other ventilation components under one purchase order. Their sourcing model allows buyers to consolidate orders across product categories.
Strengths: Broad product coverage through manufacturer network, one-stop ordering, based in Guangdong (major export hub). Limitations: Trading/aggregation model means less direct quality control vs. single-factory manufacturers. Products come from multiple sources.
8. SINOLANC Energy Technology
Location: Tianjin.
SINOLANC specialises in VAV (Variable Air Volume) and CAV (Constant Air Volume) damper systems, making them a go-to for commercial HVAC projects requiring precision airflow control. They also produce air diffusers, grilles, and registers. Their Tianjin location serves the northern China and northeast Asia export corridor.
Strengths: VAV/CAV specialisation (niche expertise), ISO 9001, commercial project focus. Limitations: Narrow product range focused on air terminals and controls. Limited residential HVAC product line.
9. AIREVERPEAK (XinSheng)
Location: Guangdong.
AIREVERPEAK is a high-tech enterprise integrating R&D, production, installation, and service for central air conditioning systems. They offer grilles, dampers, and system-level HVAC solutions. Their strength is in complete system integration rather than component-level supply.
Strengths: System-level integration capability, R&D focus, turnkey project delivery. Limitations: Component-level ordering may not be their primary focus. Better suited for project-level procurement than individual part sourcing.
10. Ningbo Jinrain Air Diffuser Manufactory (air-diffuser.cn)
Location: Ningbo, Zhejiang. Founded: 2002. Factory: 25,000 m².
Ningbo Jinrain is a dedicated air diffuser and grille factory with over 20 years of production history. They manufacture air grilles, diffusers, volume control dampers, and related accessories. Their 25,000 m² factory in Ningbo gives them significant production capacity.
Strengths: 20+ year track record, large factory, focused on air distribution components, ISO 9001, Ningbo port proximity. Limitations: Focused solely on air distribution — no ducts, copper, controls, or installation accessories.
How to Choose the Right Chinese HVAC Manufacturer
Selecting a manufacturer comes down to matching your sourcing needs against each manufacturer's real capabilities. Here are five decision factors, in order of importance:
1. Product range match. If you need multiple HVAC component types (grilles + ducts + dampers + copper), a one-stop manufacturer like Airwise eliminates the complexity of managing multiple suppliers. If you only need one product type (e.g. only diffusers), a specialist like Ventech or Jinrain may offer deeper selection in that category.
2. Certification requirements. If your projects require UL-listed products (common in US commercial construction), your options narrow to the 3 Chinese manufacturers with UL. If you sell into Australia, AWTA certification is essential. Ask for certificate copies and verify them independently.
3. Volume and MOQ. Large-volume buyers (full containers) can work with any manufacturer. Smaller buyers should look for companies that offer mixed-container orders or lower MOQs. SuperAir and Tofee tend to be more flexible on smaller orders.
4. Delivery speed. Standard sea freight from China takes 14-30 days depending on destination. If you need faster delivery, manufacturers with overseas facilities (Airwise has Houston TX and Sydney) can ship from local stock in 5-10 days.
5. Communication quality. Order samples before committing. The sample process reveals a manufacturer's responsiveness, accuracy, packaging quality, and English communication ability — all predictors of the actual production experience.