How it works .
Keep the warmth in. Keep the street out .
A retail air curtain projects a high-velocity, controlled jet of air downward across the open doorway. That jet forms an invisible aerodynamic barrier between the conditioned interior of the store and the unconditioned outdoor environment — significantly reducing the loss of warm air outwards in winter and the ingress of warm air inwards in summer, while letting customers walk in and out without obstruction.
Open door — no air curtain. Warm conditioned air escapes at the top of the door, cold street air rushes in at the bottom. The HVAC system fights this exchange every second of trading hours.
Open door — with air curtain. A high-velocity downward jet creates an aerodynamic seal across the doorway. Warmth stays in, the street stays out, and the entrance remains welcoming and unobstructed.
Why velocity matters .
For UK retail, the air curtain is normally heated — electric, low-pressure hot water, or heat-pump — so customers crossing the threshold step straight into warmth, not a draught.
The jet must reach the floor with enough velocity to resist the pressure differential at the doorway. Underspecified units fail at exactly the moment they are needed most — cold mornings, busy doors, gusting wind. Thermoscreens specifies to EN 16101:2012, so the seal performs in real-world conditions.
Energy saving
Customer comfort
✕
✓
Dust & insect protection
Open-door welcome
UNDERSPECIFIED
CORRECTLY SPECIFIED
Jet fails before reaching the floor — cold street air leaks in.
Full-height jet, intact aerodynamic seal — door remains sealed.
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