A heated air curtain is much more than a simple heating device placed above a door. It is a strategic climate engineering equipment designed to create an effective thermal separation between two environments. Whether for a downtown store, a supermarket, or a logistics warehouse, constantly opening doors is a source of massive heat loss. At Climatik, we sell high-performance air curtains that help maintain a stable indoor temperature, even with wide-open doors, while blocking drafts, dust, and insects.

How does a heated air curtain really work?

The principle of the heated air curtain is based on fluid dynamics. The device draws in ambient air (usually from the top or front), heats it via a coil (electric or hot water), then projects it at high speed through a narrow discharge slot.

Creating a laminar jet

To be effective, the airflow must be "laminar," i.e., straight and powerful, to reach the floor with sufficient pressure. This air jet creates an invisible wall that acts as a shield.

• In winter: It prevents cold outside air from entering and warm indoor air from escaping.

• In summer: It operates in "neutral air" mode (without heating) to keep the air conditioning cool inside and block scorching heat.

1. The 3 strategic advantages for your establishment

The installation of a heated air curtain by Climatik experts addresses three major challenges: commercial appeal, economy, and hygiene.

The "Open Door" effect (Marketing)

For a business, an open door is an invitation to enter. Studies show that customer flow is significantly higher when the physical barrier of the door is removed. The air curtain allows this door to remain open without turning the store into a freezer. It is the number 1 tool for commercial profitability during the winter.

Substantial energy savings

Without protection, an open door causes immediate air exchange: warm air escapes through the top of the opening while cold air rushes in through the bottom. A properly sized air curtain can block up to 80% of these thermal exchanges.

Climatik's advice: The investment in an air curtain is often recouped in less than two years thanks to the reduced consumption of the building's main heating system.

Comfort and hygiene for employees

Drafts near cash registers or reception areas are a recurring source of complaints and illnesses (colds, stiff necks). The air curtain eliminates these areas of discomfort. In addition, it acts as a dynamic filter against exhaust fumes, outdoor odors, dust, and flying insects, which are repelled by the pressure of the air jet.

2. The different types of air curtains with Climatik

There is a suitable solution for every door configuration and available energy source.

• Electric air curtains: The simplest to install. They only require an electrical connection. Ideal for boutiques and small businesses.

• Hot water air curtains: They connect to the central heating circuit (gas boiler, biomass, or heat pump). They are very economical to use for large volumes.

• Recessed air curtains: For perfect aesthetics, the device is concealed in the false ceiling. Only the discharge grille is visible.

• Industrial air curtains: Designed for hangar doors or loading docks up to 6 or 10 meters high. They feature ultra-powerful motors to counter strong winds.

Technical Guide: Criteria for proper sizing

Installing an undersized heated air curtain is useless, while an oversized model will be noisy and energy-consuming. At Climatik, we analyze three key factors:

Door width

The air curtain must imperatively cover the entire width of the opening. If the curtain is shorter than the door, cold air will rush in through the sides, ruining the barrier effect.

Installation height

This is the most critical criterion. The air velocity at ground level must be at least 2.5 m/s to ensure thermal sealing. The higher the door, the more powerful the fan must be.

Vsol ≥ 2.5 m/s

Pressure balancing

If your building is under "negative pressure" (due to excessive air extraction in the kitchen or factory), the air curtain will struggle to combat the natural suction of outside air. Our technicians always check the overall ventilation of the premises before installation.

3. Smart options and maintenance

To maximize the efficiency of your installation, Climatik offers advanced control options:

1. Door contact: The air curtain switches to reduced speed when the door closes and activates at full power as soon as it opens.

2. Electronic thermostats: The device modulates its heating power based on outside and inside temperature to consume only what is strictly necessary.

3. Remote control and home automation: Centralized management for large businesses.

Maintenance: a guarantee of longevity

An air curtain draws in a lot of dust. If the filters or turbines are clogged, the airflow drops, and the electric heating element can overheat. Climatik offers maintenance contracts including complete cleaning and motor checks to ensure optimal performance season after season.

Why choose Climatik for your air curtains?

Opening treatment is a specialty in itself. By choosing Climatik, you benefit from:

• Accurate thermal diagnosis: We don't just install a device; we calculate the necessary air barrier based on your facade's wind exposure.

• A selection of major brands: We work with manufacturers renowned for the quietness of their turbines and the reliability of their components.

• Careful installation: Our teams ensure aesthetically pleasing installation that complies with ERP (Establishments Receiving Public) safety standards.

Conclusion

The heated air curtain is an intelligent investment par excellence. It transforms a constraint (the open door) into a commercial asset while protecting your energy budget. It is the invisible guardian of your indoor comfort.

Do you want to equip your sales outlet or warehouse? Contact Climatik experts today for a free quote and sizing study. Together, let's close the door to the cold and open it to your customers!