Industrial Air Doors
Keep freezer and cooler doorways open to traffic without losing the cold. HCR industrial air doors hold the temperature line at the opening, so forklifts keep moving and the refrigeration system stops fighting the doorway.
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HCR Air Doors for Cold Storage Doorways
An HCR air door is a different machine from a standard air curtain. Built for freezers, coolers and the doorways between them, it produces a controlled recirculating air stream that separates two temperature zones while the doorway stays open to traffic, and many models retrofit to existing roll-up doors of any brand. For ambient entrances, vestibules and insect control, see our industrial air curtains page.
Freezer & Cold Storage Air Doors
Cold storage doorways are where refrigerated facilities lose money: every open cycle pulls warm, moist air into the freezer, builds ice on the floor and racks, and makes the refrigeration plant work harder. An HCR air door turns that doorway into a controlled boundary that traffic passes straight through.
- Model AC: HCR's basic horizontal recirculatory unit for above-freezing doorways
- Model CAC: adds protection for high-traffic doorways where ice and infiltration are a challenge
- Model NPAC: for doorways with low temperature differentials
- CAV air vestibules, including Model DCAV and 3CAV, for doorways between freezers and coolers
- Retrofitable to existing roll-up doors of any brand
- HCR sensors and software integrate with facility refrigeration controls for remote monitoring and adjustment
HCR Air Door Models
Double Conditioned Air Vestibule - ADS-401
The Model DCAV uses two recirculatory air curtains, creating an air vestibule between the two air streams where the air is captured and treated to a non-frost, non-fog state. The Model DCAV automatically adjusts as conditions change to optimize performance and reduce energy consumption. With the use of HCR sensors and software, Model DCAV can be integrated into a facility's refrigeration control and monitoring system. This allows not only remote monitoring but remote adjusting of the HCR equipment.
Features
- No frost, fog or icing
- Eliminates safety hazards
- No haze within cold room
- Reduced maintenance costs
- No frost on stored products
- Reduced refrigeration loss
- Reduced coil defrosting burden
- Increased warehouse productivity
- Improved refrigeration cycle efficiency
- Sublimates existing frost build-up
- Double Conditioned Air Curtain Vestibule, Freezer To Cooler
Specifications:
- Supply where indicated on plans
- HCR Model DCAV Air Vestibule for doorways between Freezers and Coolers
- Air Door to be powder coated cold-rolled steel
- Powder coating meets 500 hour salt spray test
- NEMA 1 Power/control panel complete
PCAV Push-Thru Conditioned Air Vestibule - PCAV 335
A conditioned air vestibule that uses a push-to-open versus a motorized opening. Patent Pending
Features:
- Reduces defrost cycles by 50 to 75%
- Prevents extreme temperature fluctuations
- Dramatically reduces maintenance costs
- Eliminates ice on the product
- Removes slip hazard
- Decreases clean up labor
- Typical return on investment less than 1.5 years
The Model PCAV® is an air vestibule for freezers that dramatically reduces moisture infiltration into walk-in freezers, while reducing temperature loss when the door is left open. The Air Door also eliminates ice problems, resulting in less evaporator maintenance and general ice cleanup, all providing a quick return on investment.
Model ECAV Frost-Free Airlok-Door - ECAV 375
The Model ECAV consists of two fast-acting strip doors that create a vestibule for conditioning air and an electrically or hot-gas heated anti-frost air-conditioning (AFC) section with automatic temperature control. The ECAV is designed for medium to light-traffic freezers and high humidity situations.
ASSD Fast-Acting Traffic Door - Model ASSD
The Model ASSD is a swift opening and closing motorized strip-door. Strip-door operation is easily adjusted to suit traffic speed.
Features:
- May be mounted inside the doorway or within the door jamb
- Recommended for doorways subjected to infiltration due to temperature differences
- Fully-lapped fixed strips retain 95% effectiveness
- Clear plastic strips significantly outlast push-through strips
- For negative pressure applications under 1 MPH flow-through velocity
- Can be used between 2 freezers without requiring any heat
Model 3CAV Triple Conditioned Air Vestibule - ADS-402
The Model 3CAV is primarily used between rooms with extreme temperature differences and very high traffic. The frost elimination cycle is similar to the Model DCAV, but the additional vestibule improves efficiency as well as increases the model's temperature range applicability. The Model 3CAV automatically adjusts as conditions change to optimize performance and reduce energy consumption.
With the use of HCR sensors and software, Model 3CAV can be integrated into a facility's refrigeration control and monitoring system. This allows both remote monitoring and remote adjusting of the HCR equipment.
TCAV Touch-Thru Conditioned Air Vestibule - TCAV-335
A small conditioned air vestibule with touch opening capability. Features Vestibule using non-motorized traffic doors. Typically for personnel use.
Hybrid AC and CAC w/VersaFlex™
Achieve the next level of efficiency by adding an HCR Model AC or CAC to your existing door. Perfect for high-traffic doorways where ice and infiltration are a challenge, an HCR Air Door provides another layer of protection to assure that the opening remains accessible for workflow, yet closed for costly air infiltration and energy efficiency.
Features:
- Warm side or cold side mount
- Maximizes the energy efficiency of an insulated Hittable Bi-Parting or Single Sliding Door
- Significantly reduces moisture infiltration
- Significantly reduces air exchange between rooms of differing temperature
- AC and CAC is retrofitable to existing Bi-Parting or Single Sliding Doors
- Additional air doors can be added to keep maximizing energy efficiency
Hybrid: AC and CAC w/Roll-up Doors
By combining an air door with your currently installed door, you are assuring an efficient air block when your hard door is open, reducing cold air loss and decreasing the problems associated with high-traffic openings, such as ice and safety concerns.
Features
- Maximizes the energy efficiency of a roll-up door
- Effectively reduces moisture infiltration
- Significantly reduces air exchange between rooms of differing temperature
- HCR Model AC and CAC is retrofitable to existing roll-up doors of any brand
- Additional air doors can be added in a modular process to keep maximizing energy efficiency as door open time increases
- Warm side or cold side mounts
CAC Negative Pressure Air Curtain - ADS-403
The basic NPAC model is made to counteract the one-way flow-through forces caused by negative building pressure or by wind effects.
Features
- Single nozzle and intake
- Proprietary nozzle design greatly diminishes one-way air flow caused by building air imbalances
- Horizontal, curvilinear, recirculatory air flow
- Powder coated steel
- Metal clad insulation when required
Specifications
- Supply where indicated on plans
- HCR Model NPAC Air Door for doorways with low temperature differentials and/or for temperatures above freezing
- Air door to be powder coated cold-rolled steel
- Powder coating meets 500 hour salt spray test
- NEMA 1 power/control panel complete
- Model NPAC equipment cabinet houses the centrifugal fan, fan motor, fan drive components, and prewired electrical components
- Service door(s) are provided, if required, to allow access to all internal components
- Motor is controlled by VFD (Variable Frequency Drive)
- Single point electrical connection
CAC Negative Pressure Air Curtain - ADS-403
The basic NPAC model is made to counteract the one-way flow-through forces caused by negative building pressure or by wind effects.
Features
- Single nozzle and intake
- Proprietary nozzle design greatly diminishes one-way air flow caused by building air imbalances
- Horizontal, curvilinear, recirculatory air flow
- Powder coated steel
- Metal clad insulation when required
Specifications
- Supply where indicated on plans
- HCR Model NPAC Air Door for doorways with low temperature differentials and/or for temperatures above freezing
- Air door to be powder coated cold-rolled steel
- Powder coating meets 500 hour salt spray test
- NEMA 1 power/control panel complete
- Model NPAC equipment cabinet houses the centrifugal fan, fan motor, fan drive components, and prewired electrical components
- Service door(s) are provided, if required, to allow access to all internal components
- Motor is controlled by VFD (Variable Frequency Drive)
- Single point electrical connection
Double Conditioned Air Vestibule - ADS-401
The Model CAC Air Curtain is designed for applications with higher temperature and humidity levels than the Model AC can handle. A built-in heater conditions the air inside the vestibule, while the system automatically adjusts to changing conditions for optimal performance and energy efficiency. With HCR sensors and software, it can be integrated into a facility's control system for remote monitoring and adjustments.
Features
- Single nozzle and intake
- Proprietary nozzle design reduces air and moisture infiltration
- Horizontal, curvilinear, recirculatory air flow
- Powder-coated steel construction
- Metal clad insulation when required
- Suitable for cooler or ambient doors
Specifications
- Supply where indicated on plans
- HCR Model AC Air Door for doorways with low temperature differentials and/or above-freezing temperatures
AC Air Curtain - ADS-400
Model AC is HCR's basic unit - Horizontal, Curvilinear, and Recirculatory. Its air stream produces counter-flow forces equal and opposite to the two-way flow-through forces caused by air temperature differences.
Features
- Wide open environment while maintaining temperature
- Significantly reduces two-way air exchange
- Greatly diminishes air infiltration
- Mixes air at the interface between room air and the air curtain's air stream
- For open doorways between cooler-to-cooler, cooler-to-ambient, and freezer-to-freezer
- Available in stainless and powder-coat finishes
- Can be used between two freezers without requiring any heat
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Industrial Air Door FAQs
What is an industrial air door?
An industrial air door uses a controlled, recirculating stream of air to separate two temperature zones at an open doorway. Forklifts and pallet jacks drive straight through it, but the cold stays on its side of the opening, which keeps freezer aisles ice-free and takes load off the refrigeration system.
What is the difference between an air door and an air curtain?
An air curtain blows a single sheet of air across an opening and suits ambient entrances, service windows and insect control. An HCR air door recirculates its air stream and is engineered for freezer and cooler doorways, where the temperature difference across the opening is far larger.
Can an air door be added to an existing doorway?
Yes. HCR models AC and CAC retrofit to existing roll-up doors of any brand, so a working doorway can be upgraded without replacing the door that is already there.
Do HCR air doors work with our refrigeration controls?
Yes. With HCR sensors and software, models like the DCAV and 3CAV integrate into a facility's refrigeration control system, allowing remote monitoring and remote adjustment of the equipment.