EnOcean is particularly well suited to the retrofit of existing buildings: sensors and buttons can be added without pulling cable or fitting batteries, with a 20+ year service life, making it ideal for heritage buildings or sites that are difficult to rewire.

The retrofit value proposition of EnOcean rests on four pillars. No cable means installation takes minutes on any wall or ceiling. No battery means no maintenance cycle every 2 to 5 years. A 20+ year service life justifies the capital cost on a long-amortisation basis. And the devices are physically compact and discreet, which matters in listed or heritage premises. The practical limit is the number of devices per installation, driven by radio capacity and gateway slot count; typical residential high-end refurbishments handle 20 to 100 devices comfortably.

On a heritage site, perform a full RF site survey before quoting; thick stone walls and metallic plaster lath can drop your effective range from 30 m to under 10 m, and you may need additional repeaters to cover the floor plan.