Contents
The terraces, verandas and semi-open areas of cafés and restaurants have very different heating conditions from enclosed dining rooms. Outdoor air, wind, retractable façades and constantly changing table layouts make it harder to keep heat in the space. That is why the choice should not be made on floor area or the number of tables alone.
A good project first establishes how open the area is and where guests sit. Ceramic radiant heaters are one of the system families considered for open or semi-open areas that need direct, zoned heat. The choice of model and layout, however, must be based on current technical documentation and the results of a site survey.
Define how open the space is
A terrace with a roof but completely open sides does not behave like a veranda enclosed by glass panels. Record when the façades are open, whether awnings or pergolas are used and the prevailing wind direction. If the architectural layout changes during the season, the project should cover more than one usage scenario.
Beams, awning cassettes or decorative elements in front of the heater can affect its line of sight. When preparing the heater layout, use sections and site photos as well as the architectural plan.
Table layout and actual use
The aim is to direct heat to where guests are seated, not to empty circulation space. Fixed banquettes, movable tables, service aisles and entrance waiting areas should be considered separately. If the venue often rearranges its tables for events, check whether a single layout can cover every scenario.
Staff service routes also matter. Placing a heater too close or at the wrong angle can upset the balance of comfort. The goal is not to make one spot excessively hot, but to give guests an even experience wherever they are seated.
Wind and environmental factors
Wind changes perceived comfort in an open area and how warm surfaces exchange heat with their surroundings. Observe the prevailing wind direction, wind acceleration around building corners and the effect of nearby buildings. The conditions on a single calm day may not represent the whole season.
When planning architectural measures to reduce wind, do not overlook ventilation, extraction, fire safety and local regulations. A heating system is not an alternative to enclosing the space without the necessary permissions.
Installation and safety
The load-bearing suitability of the mounting surface, the heater’s clearance from combustible materials, gas and electrical connections, combustion air supply and service access must all be verified. Awning fabric, timber cladding, plants and seasonal decorations must not be moved closer to the heater after installation.
Safety clearances vary by product family and model. Use current technical documentation instead of copying values from another heater’s table. If you need documents, you can submit a request via our contact page.
Control and day-to-day operation
How busy the terrace is can change during the day. Splitting heating zones to match groups of tables can stop unused sections from running unnecessarily. Controls should be labeled so staff can easily understand them, and unauthorized setting changes should be restricted.
Opening and closing checks should be part of the daily routine. If you notice any unusual odor, noise, appearance or ignition behavior, switch the heater off and call for authorized support. Technical work must not be carried out by venue staff.
Selection checklist
- Have the open and closed sides of the space been recorded?
- Has the wind direction been observed on different days?
- Have tables and service aisles been marked on the plan?
- Have the mounting surface and safety clearances been verified?
- Do the control zones match how the space fills up?
- Has safe access been left for maintenance?
For the general selection approach, see our guide to choosing an industrial heating system, and for a maintenance routine, our radiant heater maintenance guide.
Conclusion
Good results in café and restaurant outdoor areas are not achieved simply by choosing a powerful heater. Architectural openness, wind, seating layout, safe installation and clear controls must all be planned together. For an assessment tailored to your space, add dimensions, photos and opening hours to the Get a Quote form.
