The Solaira Alpha Series H1 Patio Heater SALPHA15120S represents the evolution of engineered short wave heating technology for commercial and industrial applications. Alpha Series Heaters produce short wave length infrared that convert 92% of consumed energy to instant, controllable, directional heat. This heating technology is not affected by wind or draft as it warms people, objects and things and not the air. The modular design of the Solaira Alpha Series allows specifying engineers to adjust and direct specified heating loads based on area requirements. The modern, sleek design allows architects to integrate heating technology with clean un-intrusive lines. This heater is engineered to meet IP24 standard for water spray and may be installed in both wet (outdoor) or dry conditions (indoor or outdoor). Ideal for warehouses, shipping areas, hotel valet, restaurant patio, concierge service desk, driving ranges, security gate houses, arena seating, community center, place of worship, zoos or outdoor waiting areas.