Commercial & Industrial Air Curtains, Built in India

An air curtain is an electric appliance that blows a continuous, downward-aimed stream of high-velocity air across an open doorway. The laminar jet creates a pressure differential — essentially an invisible wall — that keeps insects, dust and conditioned air on one side while letting people and trolleys pass through unobstructed.

A basic 3 ft commercial unit (AERSTER FLOW 3FT) starts at ₹8,500 + GST. A 5 ft silent hospital-grade unit (SILENT+) is around ₹18,500. Industrial 6 ft heavy-duty curtains (SHIELD MAX) price in at ₹28,000 – 35,000. B2B buyers with GSTIN get ITC on the 18 % GST component and can often recover the unit cost in 9–14 months through HVAC-loss savings.

Match the curtain length to the door width: 3 ft curtain for doors up to 915 mm, 4 ft for 1,200 mm, 5 ft for 1,525 mm, 6 ft for 1,800 mm. For doors taller than 2.4 m floor-to-lintel, step up to our SHIELD series for higher discharge velocity. Never under-size — a curtain narrower than the door leaves un-protected gaps at the sides.

Most FSSAI-inspected restaurants use AERSTER FLOW 4FT at the main entrance plus a GUARD series unit with an integrated UV stage at the kitchen pass-through. That combination passes FSSAI Schedule 4 inspections and typically cuts cooling bills by ₹12,000 – 18,000 per month for a 30–50 seat outlet.

PVC strip curtains seal better but slow down traffic — ideal for cold storage, loading docks and low-foot-traffic doors. Air curtains preserve free movement — ideal for customer-facing entrances and shift-change doors. Many sites use both: strip curtains on dock doors, air curtains at entrances. See our PVC strip curtain guide for hybrid-install diagrams.

Air curtains meet FSSAI Schedule 4 Clause 3.3 (physical barrier at food-prep entries) when properly sized and installed. AERSTER GUARD series units ship with an integrated UV-catcher stage and HACCP-compliant documentation, making them the quickest path to passing inspection.

Surface-mount at 2.2 – 2.8 m above the finished floor, centred on the door, tilted 15° outward against incoming draft. Power is 220 V single-phase with a 16 A earthed socket. Typical installation by an AERSTER-authorised electrician takes 90 minutes. We ship a printed template and include a free first-install visit on all orders above ₹15,000.

All AERSTER air curtains ship with a 5-year comprehensive manufacturer warranty covering motor, body, PCB and controller. An optional AMC from ₹1,499/year covers two preventive maintenance visits, filter replacements and priority service-level response.

Yes — independent testing (AMCA 220) shows a correctly-sized air curtain recovers 50 – 70 % of conditioned-air loss at open doorways. At Indian commercial tariffs (₹8 – 12/kWh), a 4 ft unit on a retail entrance typically pays back its purchase price in 9 – 14 months through HVAC-load reduction.

A correctly-sized and installed unit blocks 90 – 95 % of flying insects. No physical barrier is perfect, so for FSSAI-critical environments we recommend pairing the curtain with a glue-pad insect catcher (AERSTER SAFE series) 3 – 4 m behind the entrance as a second layer.

Commercial units (AERSTER FLOW, SILENT) handle standard 2.1 – 2.5 m doors with 1,800 – 2,800 CMH air volume, mostly axial or compact centrifugal. Industrial units (SHIELD) handle 3 – 5 m bay doors with 4,000+ CMH, dual centrifugal blowers, and IP55 ratings for dust and wash-down environments. Pick by door height and environment, not by building type.

Yes. AERSTER bills under HSN 8415 (Air-conditioning machines) at 18 % GST. Registered businesses can claim full ITC on the tax component, which is why we ship a GST-compliant e-invoice with every order and automate HSN-wise reporting for bulk procurement buyers.