Short answer: A revolving door is an entrance system with three or four wings rotating around a central shaft, working on an "always open, always closed" principle. It handles heavy pedestrian traffic in both directions without interruption while blocking draughts between inside and outside. The right choice depends on the diameter (1600–3800 mm) and number of wings matched to hourly footfall, plus an accessible door planned alongside it.
A building's entrance is where first impressions are formed and where energy loss is greatest. At shopping centre, hotel, hospital and office building entrances, a door that opens and closes all day struggles to control wind, dust, noise and the escape of conditioned air. Revolving doors solve this problem by never leaving the entrance physically fully open. In this article we look at revolving doors from the perspective of traffic management, energy and safety, and explain the criteria to consider when choosing a series. For technical specifications, see our revolving door systems page.
How does a revolving door manage heavy pedestrian traffic?
With conventional swing or sliding doors, entry and exit share the same opening; while the door is open, people coming from both directions wait for each other and congestion builds up at peak times. In a revolving door, each compartment moves in one direction, so entry and exit take place simultaneously. In automatic series, a sensor detects an approaching person and rotates the wings at a constant, safe speed; this steady rhythm makes it easy for people to match their pace to the door.
The two variables that determine capacity are diameter and the number of wings. In large-diameter doors the compartments are wider, so more than one person or a shopping trolley can fit into a single compartment. Four-wing doors create smaller but more frequent compartments, while three-wing doors offer wider compartments. For entrances with heavy luggage, stretcher and wheelchair traffic, a high-capacity two-wing series with wide compartments has been designed.
What is the effect on energy efficiency?
The energy advantage of a revolving door comes from creating a permanent airlock between the indoor and outdoor environments. Because at least one wing separates the two spaces at all times, no direct airflow occurs. This reduces heating and cooling losses, and also limits the ingress of dust, exhaust fumes and traffic noise.
The effect is even more pronounced in tall buildings. On windy façades and in multi-storey structures, the temperature difference between inside and outside causes a strong draught when the entrance opens, known as the stack effect. When a sliding door opens, the lobby can turn into a wind tunnel; a revolving door cuts off this draught at source. The comfort of the entrance hall can be further enhanced with options such as an air curtain, underfloor heating and canopy lighting.
Which revolving door series suits which entrance?
Four series address different scales and requirements. The table below provides a comparison based on catalogue values:
| Series | Inner diameter / construction | Typical use | Key feature |
|---|---|---|---|
| DK Standard | 1800–3800 mm, 3 or 4 wings | Shopping centre main entrances, hotel lobbies, office building entrances | Automatic or servo-assisted drive |
| DK Crystal (glass) | 1600–3000 mm, all-glass, minimal profiles | Hotel lobbies, museums and cultural centres, luxury retail | Maximum transparency and architectural prestige |
| DK Duo (high capacity) | 2 wings, wide passage compartment | Shopping centre main doors, hospital entrances, airports and terminals | Stretcher and luggage friendly, integrated sliding door option |
| DK Manual | Manually rotated, non-motorised | Medium-sized offices, boutique hotels, restaurants | Speed-limiting brake, economical and easy to maintain |
The passage height is set between 2100 and 2500 mm depending on the project. Laminated or tempered safety glass is available for the glazing, with stainless steel, anodised or RAL aluminium options for the surfaces. To harmonise with the façade design, the canopy detail and profile colour are finalised together with the architectural project.
How are safety, emergencies and accessibility planned?
A revolving door is a moving machine as much as a prestigious architectural element, so the safety concept should be established at the start of the project. Automatic revolving doors are assessed under EN 16005, the standard for safety in use of power-operated pedestrian doorsets. The core safety equipment comprises anti-trap sensors, an emergency stop and break-out (panic) hardware that allows the wings to fold in an emergency. A night lock is added for closing outside business hours.
In terms of accessibility, automatic series have a slow-speed mode for wheelchair users. Nevertheless, for step-free access and additional escape width, it is recommended to plan an automatic sliding sensor door next to the revolving door. This combination helps meet accessibility requirements and also prevents the entrance from being closed completely during maintenance or a breakdown.
The main points to be clarified at the project stage are:
- Peak-hour footfall and luggage, stretcher or shopping trolley traffic
- Entrance hall dimensions, ceiling height and canopy detail
- The role of the revolving door and side door in escape route calculations
- Requirements for break-out folding, emergency stop and night lock
- Integration with building automation, card access or security systems
- Maintenance contract and response plan in the event of a breakdown
Note from the field: During site surveys we pay particular attention to the floor level on which the revolving door will sit. Because the wings must rotate close to the floor, even a small level difference or slope between the inside and outside floors causes the door to rub or the brush seals to wear prematurely. If the floor finish is to be laid after the revolving door is installed, the final floor level must be confirmed in advance. Another observation: at busy entrances, if the matting and grating area in front of the door is not kept large enough, sand and dust are carried into the door mechanism.
Common mistakes
- Choosing the diameter based on façade dimensions: The right diameter is determined by peak-hour footfall; the largest diameter that fits the façade is not always correct.
- Forgetting the side door: A sliding or swing door should be planned next to the revolving door for step-free access and escape width.
- Using a standard series in hospitals and airports: Entrances with stretcher and luggage traffic need the high-capacity Duo series.
- Not testing the emergency mode: Break-out folding and the emergency stop must be tested at handover and during periodic maintenance.
- Leaving maintenance until a breakdown: When sensors, brush seals and drive settings are not checked regularly, the door drops into slow mode or stops.
Frequently asked questions
Does a revolving door save energy?
Yes. Because one of the wings separates the indoor and outdoor environments at all times, no direct airflow occurs and heating and cooling losses are reduced. It also prevents the stack effect on windy façades and in tall buildings.
Is a revolving door suitable for disabled access?
Automatic revolving doors have a slow-speed mode. However, for step-free access it is recommended to plan an automatic sliding sensor door alongside. We explain how sensor doors affect the user experience in our article on automatic sensor doors and touch-free entry.
What is the typical diameter of a revolving door?
The common inner diameter range is 1600–3800 mm. Medium diameters are preferred for hotel and office building entrances, and larger diameters for shopping centre and terminal projects.
When is a manual revolving door preferred?
It is an economical solution for entrances with relatively low traffic, such as medium-sized offices, boutique hotels and restaurants. A speed-limiting brake prevents the wings from spinning uncontrollably.
Conclusion and next step
When selected with the right diameter and series, a revolving door enhances the prestige of an entrance, regulates pedestrian flow and reduces climate-control losses. These gains become lasting when planned together with safety equipment and an accessible side door. So that we can assess your entrance dimensions, footfall and floor conditions on site, send us your free site survey request.
