Outdoor infrared heating represents a fundamentally different approach to warming outdoor spaces compared to traditional convection heating. Instead of heating the air around you—which quickly dissipates in open environments—infrared heaters emit electromagnetic radiation that directly warms objects, surfaces, and human skin in their path. This physics-based distinction is critical for B2B buyers evaluating patio heating solutions for restaurants, hotels, or retail spaces.
How Infrared Radiation Works: Infrared heaters generate electromagnetic waves in the infrared spectrum (wavelengths between 700nm and 1mm). When these waves strike a person or object, the energy is absorbed and converted into heat. This is the same mechanism by which sunlight warms your skin on a cool day—you feel warm even though the surrounding air temperature hasn't changed. For outdoor applications, this means infrared heating remains effective even in windy conditions where traditional heaters struggle [6].
Key Technical Specifications for B2B Buyers: When evaluating infrared patio heaters on Alibaba.com, buyers should focus on several critical specifications. Wattage determines heat output—commercial units typically range from 1,500W to 4,000W per heater. The IP (Ingress Protection) rating indicates weather resistance; IP44 is minimum for covered patios, while IP65 is required for fully exposed installations. Heating coverage varies by model, with wall-mounted units typically covering 50-350 square feet and freestanding models reaching up to 700 square feet [7].
"IR panels work well insofar as a pleasant warming - a bit like sitting in front of a fire. However, they don't warm the air" [4].

