Air barrier
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Industrial, Retail and Commercial Air Barriers (Air Curtains)


Introducing Enershield Air Barriers

Get an overview of the one-of-a-kind articulating nozzle and other unique features incorporated into Enershield Air Barriers/air curtains that are best suited for industrial, retail and commercial applications. Air barriers are a great way to essentially keep your doors open and closed at the same time.

Highly applicable for cold storage, pharmaceutical and food facilities that need to adhere to strict government safety regulations.
Energy rebates available
Get energy rebates in select areas of Ontario. Contact us today to begin the qualification process—we'll calculate your potential one-time energy rebates, ongoing energy savings and return on investment.

Enhance comfort for your workers and customers: Keep excessively warm/cold air out of your facility by sealing off up to 90% of outside air.

Save on energy costs: Enershield Air Barriers save 15-20 units of energy for every 1 unit consumed.

Increase worker productivity: Reduce lost work hours due to illness from prolonged exposure to drafts.

Extend the life of your HVAC system: Heating and cooling equipment does not need to cycle as many times with an air barrier.

Adhere to safety regulations: Keep out contaminants (extreme weather, dust, insects, truck exhaust fumes, etc.) and remain compliant with strict food and safety regulations.

Improve worker safety: Prevent moisture build-up on the floor from condensation.


ASHRAE Standard 90.1-2019: Air Barriers Can Substitute Vestibules

Doorway air curtains were approved […] as alternatives to vestibules on most commercial building entries in […] ASHRAE Standard 90.1-2019 “Energy Standard for Buildings Except Low Rise Residential Buildings.” […] The approval is good news for retail, restaurants, healthcare, hotels, office and other facility owners, because they can now opt to forego the expense of vestibules in new construction, or repurpose significant square footage for more productive uses by retrofitting existing vestibules.

Source: Connex. “Air Curtains Allowed as Vestibule Substitutes in Upcoming ASHRAE Standard 90.1-2019.” 31 July 2019. <>

Return on Investment: Within Two Years (Average)

Enershield Air Barriers operate efficiently and outperform any other air curtain or air door on the market by a wide margin. With these energy-efficient air barriers, you’ll dramatically enhance your indoor comfort while saving money. Enershield Air Barriers have proven to provide a return on investment within an average of two years and have a total lifespan of up to 20 years on direct drive and belt drive models.

Creating a Strong Environmental Separation

The thermal imagery below shows how Enershield air curtains create a strong environmental separation.

Air barrier thermal imagery
*Models DS and up.

The Only Way to Keep Your Door Open and Closed at the Same Time

With the cost of energy continuing to rise, heating and cooling costs are becoming more costly than ever. If you are a business that keeps your doors open multiple times a day to load/unload materials or have a high amount of foot traffic, your energy costs are even greater.

Enershield air curtains are custom-made for each doorway to ensure a seal up to 90%. These air barriers also maintain air speeds of 800 fpm above the ground, which creates an ideal environmental separation between outside and inside air temperatures, saving you money on heating and cooling costs.

Air barriers create a strong environmental separation to:

  • Enhance indoor comfort and safety for workers and customers.
  • Keep out inclement weather (extreme heat/cold, rain, snow and humidity).
  • Prevent contaminants from entering the facility, such as bugs, dust, pests and exhaust fumes.
  • Reduce stress on HVAC systems, increasing their longevity.
The benefits of using an air barrier for cold storage applications

Air Barriers Prevent Frost Build-Up in Cold Storage Applications

Vertically-installed air barriers are recommended for coolers and freezers to prevent ice and frost build-up caused by air leakage and air exchange between two different environments.

Recirculatory Air Door With a Built-in Air Barrier

AirSeal creates an invisible barrier utilizing high-velocity laminar airflow to maintain dual climates, keeping your cold side cold and your warm side warm. This horizontal recirculatory air door is a “smart door” that automatically adjusts to your temperature and humidity changes while maximizing energy efficiency with superior optimization control.
Learn more about AirSeal Air Door »


Air Barriers Are Best Suited for Commercial, Retail and Industrial Applications

Air barrier


  • Warehouses.
  • Shipping/receiving areas.
  • Recreational facilities.
  • Hospitals.
  • Coolers and freezers.
  • Car dealerships.
Retail air barrier


  • Retail chains.
  • Airports.
  • Grocery stores.
  • Banks.
  • Restaurants.
  • Drive-throughs.
  • Gas stations.
Air barrier


  • Transportation facilities.
  • Airplane hangars.
  • Manufacturing plants.
  • Mining facilities.


Customers That Love This Product

Read Customer Success Stories



Durashield (DS) is designed for commercial applications with doors that are up to 10' high.

Models: DS-72, DS-96, DS-120, DS-144, DS-168, DS-192

Durashield HD

Durashield HD (DSH) is designed for commercial applications with doors that are up to 12' high.

Models: DSH-72, DSH-96, DSH-120, DSH-144, DSH-168, DSH-192, DSH-216, DSH-240


Microshield (MCS) is designed for retail applications with doors that are up to 7' high.

Models: MCS-36, MCS-48, MCS-72, MCS-36-AA, MCS-48-AA, MCS-72-AA


Comfortshield (CS) is designed for retail applications with doors that are up to 9' high.

Models: CS-36, CS-48, CS-72, CS-96

Thermalshield (Electrically heated – great for drive-throughs)

Thermalshield (TS) is designed for retail applications with doors that are up to 7' high.

Models: TS-24, TS-36, TS-48, TS-72


Ultrashield (US) is designed for industrial applications with doors that are up to 18' high.

Models: US-72, US-96, US-120, US-144, US-168, US-192, US-216, US-240


Xtremeshield (XS) is designed for industrial applications with doors that are up to 26' high.

Models: XS-120, XS-150, XS-180, XS-210, XS-240, XS-270, XS-300, XS-330, XS-360, XS-390


Megashield (MS) is designed for industrial applications with doors that are up to 45' high.

Models: MS-144, MS-180, MS-216, MS-252, MS-288

Model Comparison Chart

Durashield Durashield HD
Max. height 10' 12'
Counters effects of negative air pressure
*Model upgrade might be required.
Application Cooler Cooler or freezer
Motor Direct drive, single phase Belt drive, 3-phase
Motor mount Inset mount External mount
Motor power 0.5-2 hp 5-15 hp
208, 460, 575
Microshield Comfortshield Thermalshield
Max. height 7' 9' 7'
Counters effects of air pressure Yes*
*Model upgrade might be required.
*Model upgrade might be required.
Direct drive, single phase
Motor mount
Inset mount
Motor power 0.2 hp 1-1.5 hp 1-2 hp
Voltage 110, 120 208, 260, 575 120, 208, 220
Ultrashield Xtremeshield Megashield
Max. height 18' 26' 45'
Counters effects of negative air pressure Yes*
*Model upgrade might be required.
*Model upgrade might be required.
Belt drive
Motor mount
3-phase, external mount
Motor power 7.5-10 hp 15-25 hp 15-25 hp
Voltage 208, 460, 575 208, 230, 460, 575 208, 230, 460, 575


• Marine Duty Upgrade package for wash-down applications.
• Variable Frequency Drive available.


  • 2 years: Parts warranty on all models except Microshield.
  • 1 year: Parts warranty on Microshield.


Air movement at floor level 800-1000 ft/min
Articulating discharge nozzle angle range Up to +/- 20 degrees
Installations Horizontal or vertical


Fire extinguisher test

Enershield demonstrates how their air barriers hold up against the high pressure from a fire extinguisher.

Canadian Tire

Canadian Tire installed Enershield Air Barriers near their entrances and exits, loading dock area and service centers to enhance indoor comfort for their workers and customers.


Uni-Select no longer worries about heat loss by keeping their shipping doors open.


Computers, equipment and indoor workers maintain comfortable temperatures indoors during winter.

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