Ningguo Kingcool Import and Export Co., Ltd is a China-based Air Curtain manufacturer and supplier of HVAC and refrigeration components. Our range covers commercial indoor air curtains, PVC air curtains, and the supporting parts that keep air doors, cold rooms, and retail entrances working as specified.
Air Curtains Within Our Refrigeration Parts Range
As a Refrigeration Parts-Air Curtain Manufacturers, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.
Air curtains sit at the boundary between conditioned and unconditioned space. In refrigeration and HVAC projects they reduce infiltration at open doorways, protect cold-chain rooms, and help maintain temperature stability where doors must stay open for traffic. We supply air curtains as part of a broader Refrigeration Parts portfolio, so a single order can include the air curtain, the controls, and the installation accessories that go with it.
Our air curtain range is built around two main formats: commercial indoor units for doorways and PVC air curtains for lighter or more flexible installations. Both are configured to match the opening width, mounting height, and the separation duty required by the site.
Product Range and Application Fit
We keep the range focused on the formats that appear most often in refrigeration, food retail, and commercial entrance projects. Each format has a distinct role, and we match it to the door type, traffic pattern, and the environment on both sides of the opening.
| Product Type | Typical Application | Key Selection Variables | Mounting Position |
|---|---|---|---|
| Commercial Indoor Air Curtain | Retail entrances, restaurant doors, office lobbies, cold-room doorways | Door width, mounting height, air velocity, noise level, power supply | Overhead, horizontal discharge |
| PVC Air Curtain | Light commercial doors, temporary separations, service entrances | Strip overlap, material thickness, door height, chemical or moisture exposure | Overhead rail or frame-mounted |
| Supporting Refrigeration Parts | Cold rooms, condensing units, control panels, installation kits | System voltage, refrigerant, control signal, pipe and fitting sizes | Varies by component |
How We Configure an Air Curtain for Your Project
Air curtain performance depends on matching the unit to the opening, not simply choosing the largest available model. We work from the door dimensions, the pressure difference across the opening, and the temperature or contamination control target. For cold-room and refrigerated display applications, the air curtain must also work with the refrigeration load rather than against it.
- Door width and height: determines unit length, number of fan sections, and discharge velocity needed to reach the floor with a coherent air barrier.
- Mounting height: affects nozzle selection and throw distance; higher doors require higher discharge velocity or a different nozzle profile.
- Power supply: single-phase or three-phase, voltage and frequency matched to the destination market.
- Control method: manual switch, door interlock, or integration with a building management or refrigeration control system.
- Environment: humidity, dust, insects, and washdown requirements influence enclosure protection and material choice.
Materials, Construction, and Critical Specifications
Commercial air curtains are typically built with a metal housing, plastic or coated internal insulation, and a motor-driven fan section. The housing finish and internal materials should suit the installation environment: painted steel for general indoor use, and more corrosion-resistant finishes where moisture or cleaning chemicals are present. PVC air curtains use flexible strips selected for thickness, transparency, and temperature range.
Critical specifications we confirm before quoting include:
- Air volume and discharge velocity at the specified mounting height
- Noise level at the intended operating speed
- Motor power, speed control, and bearing type
- Housing dimensions and weight for structural mounting
- Ingress protection and insulation class where relevant
- Compatibility with the site's electrical and control infrastructure
Controls, Automation, and Line Integration
Air curtains are often part of a larger refrigeration or HVAC control scheme. We configure the control interface around the required line signal: a simple on/off contact from a door switch, a 0–10 V or relay signal from a BMS, or a standalone controller with speed selection. Where the air curtain works alongside a condensing unit or cold-room controller, we coordinate the electrical and signal interfaces so the installed system behaves as one.
For projects that include refrigeration controls, our Temperature Controller range and related components can be supplied in the same order, reducing the number of separate shipments and interface risks.
Installation, Commissioning, and Maintenance
Installation scope depends on the door structure and the unit format. Overhead commercial units are normally mounted above the door on brackets or a support rail, with the discharge nozzle aimed across the opening. PVC air curtains are mounted on a rail or frame so the strips hang freely and overlap correctly. We supply mounting brackets and installation materials where they are part of the agreed scope.
Commissioning focuses on airflow direction, speed setting, and control response. Maintenance is straightforward: keep the intake and nozzle clear, check fan and motor condition, and replace PVC strips when they lose flexibility or overlap. We support spare parts and replacement components through our refrigeration parts range.
Quality Approach and Documentation
Our manufacturing background is in metalized polypropylene film capacitors, with high-precision slitting and winding equipment, production lines, and testing equipment. That quality discipline carries into the air curtain and refrigeration parts we supply: incoming components are checked against the agreed specification, and finished units are inspected before packing. Documentation can include product specifications, packing lists, and the compliance evidence relevant to the destination market.
Information We Use to Configure Your Solution
To prepare a suitable air curtain configuration and quotation, we work from the following project inputs. The more precisely these are defined, the closer the first proposal will be to the final requirement.
| Project Input | Why We Need It |
|---|---|
| Door width, height, and type | Determines unit length, mounting method, and air barrier geometry |
| Indoor and outdoor conditions | Sets the separation duty and material or finish requirements |
| Power supply and control signal | Matches the unit to the site electrical and automation infrastructure |
| Quantity and delivery schedule | Supports production planning and shipment consolidation |
| Destination market and compliance needs | Aligns documentation and product configuration with local requirements |
One-Stop Procurement for Refrigeration and HVAC Projects
Kingcool operates as an agent for air conditioner and refrigerator accessories, with a complete range of refrigerator and washing machine parts. For air curtain projects, that means the air curtain can be ordered together with Refrigerator Parts, installation materials, and control components. We export to more than a dozen countries across the Middle East, Africa, South America, and Southeast Asia, and we handle fragmented, personalized requirements through direct market contact.
Frequently Asked Questions
What is the difference between a commercial indoor air curtain and a PVC air curtain?
A commercial indoor air curtain uses a motor-driven fan to discharge a controlled air stream across the doorway, creating an invisible barrier. A PVC air curtain uses overlapping flexible strips to block air movement and debris physically. The commercial unit is better for temperature separation and high-traffic entrances; the PVC type suits lighter separations, service doors, and areas where a powered unit is not practical.
Can the air curtain be integrated with our existing refrigeration controls?
Yes. We configure the control interface around the signal available on site, whether that is a door contact, a relay output, or a BMS signal. Where the air curtain is part of a cold-room or condensing unit package, we coordinate the electrical and control interfaces so the installed system operates as a single scheme.
What information do you need to quote an air curtain for a specific door?
We need the door width and height, the mounting position, the indoor and outdoor conditions, the available power supply, the control method, the required quantity, and the destination market. With those inputs we can propose a unit size, airflow configuration, and control arrangement that matches the opening.
Do you supply spare parts and replacement components for air curtains?
We support air curtain installations with replacement components through our refrigeration parts range, including motors, fans, and control accessories where applicable. PVC strips and mounting hardware can also be supplied as part of a maintenance order.
How do you handle quality and documentation for export orders?
Our production background includes high-precision slitting and winding equipment, production lines, and testing equipment. For air curtain and refrigeration parts orders, we inspect against the agreed specification before packing and provide the documentation relevant to the destination market, including product specifications and packing lists.
