An air curtain is a device that creates a directed air flow around a door or gate opening to reduce the penetration of cold air in winter and hot air in summer. This solution helps stabilize the microclimate, reduce heating and air conditioning loads, and improve comfort in rooms with frequent door openings.
A properly selected and installed air curtain https://friros.fi operates unnoticed: the air flow forms an «invisible barrier» separating the outdoor and indoor environments. Errors in calculations or installation reduce the effectiveness, leading to drafts, heat loss, and increased noise. Therefore, it is important to understand the operating principle and key installation requirements.
Air Curtain Installation: Steps and Requirements
Installation begins with checking the opening and mounting location: the curtain should be positioned as close as possible to the top edge of the entrance (or to the side if installed vertically) and strictly aligned with the air flow to ensure the entire area is covered. The key principle is to direct the flow along the plane of the opening, not «into the room.»
Step-by-Step Installation Procedure
- Marking – Mounting points are marked, taking into account level, alignment, and clearances for maintenance.
- Casing Mounting – Use the standard bracket/studs; the base must withstand vibration and the weight of the equipment.
- Power Connection – Select a cable, circuit breaker, and (if necessary) an RCD; grounding requirements are met.
- Control Connection – Pushbutton station, remote control, door switch, temperature sensors; The modes are configured.
- Commissioning – the jet direction, speed levels, heating, automation, and absence of extraneous noise are checked.
Water Curtain Installation Features
For the water model, the heat exchanger piping is additionally installed: supply/return, shut-off valves, filter, air vent, and control unit (valve/thermostat). It is important to ensure proper air removal from the heat exchanger, prevent leaks, and provide access to service points.
Typical Mistakes and How to Avoid Them
- The air curtain is shorter than the opening – this leaves gaps at the edges, allowing cold air to actively pass through.
- Incorrect jet angle – the stream does not cover the opening and does not reach the floor, and the barrier disintegrates.
- Insufficient power supply – cable overheating, false protection alarms, unstable heating.
- Lack of automation – the air curtain operates manually, does not turn on quickly when the door is opened, and wastes energy.
If a comprehensive solution for maintaining a microclimate is required (entrance area + room cooling/heating), it is convenient to plan the compatibility of the equipment and power supply in advance. In this case, you can order air conditioner installation on our website and simultaneously coordinate the correct placement of the air curtain to ensure the systems don’t interfere with each other and operate economically.
What problems does an air curtain solve in a doorway during drafts and frequent door openings?
During drafts and frequent door openings, warm air from the room quickly escapes, while cold air is actively drawn in. The air curtain creates a directed air flow across the entire width of the doorway, which acts as a «dynamic barrier» and reduces the intensity of air exchange through the open door.
As a result, the indoor climate becomes more stable, and the heating (or air conditioning) system doesn’t waste excess power to constantly compensate for losses. This is especially noticeable in entrance areas, vestibules, warehouses, and retail spaces, where the door is opened dozens of times per hour.
Key tasks of an air curtain
- Heat loss reduction: reduces the leakage of heated air and the influx of cold air, maintaining a comfortable temperature at the entrance.
- Comfort without a «cold stream»: reduces the sensation of a draft in the passage area, reduces local hypothermia of people and workstations near the door.
- Microclimate stabilization: helps maintain the set temperature and, in some cases, humidity parameters during frequent openings.
- Resource savings: reduces the load on heating/air conditioning, which reduces energy consumption and equipment wear.
- Protection from dust and exhaust gases: the air flow partially prevents the entry of street dust, odors, and exhaust gases when the door is open Doors.
- Reduced insect penetration: dense airflow makes it difficult for insects to enter during warmer months.
Result: An air curtain in a doorway with drafts and frequent openings solves two main problems at once – it retains heat and increases comfort, while simultaneously reducing operating costs. When properly selected for the doorway width and installed correctly, it becomes an effective element of the entrance area, stabilizing the microclimate and reducing the impact of outdoor air on the room.
