Harvia Spirit 6 kW Black Sauna Heater + Fenix Wi-Fi Kit

Harvia's newest heater, paired with Harvia's newest controller — a complete kit that turns a traditional sauna room into a smart one. The Spirit is a design heater in the literal sense: a black steel front panel set inside an open cage of round stones, with ventilation channels hidden beneath the stone bed that push heat evenly through the room instead of stacking it in one corner. Those same channels cool the back of the unit, so it can be mounted straight onto a timber wall. What makes it hit hard is the stone. The Spirit's open cage holds 60 kg of olivine diabase — the largest stone load in its class. More stone means more stored heat, so the room reaches and holds a genuinely high temperature, and every ladle of water throws a thick, soft burst of löyly rather than a thin hiss that disappears. It's built to be watered, repeatedly, without the temperature falling away. Running it is the Harvia Fenix — the control system Harvia released to replace Xenio. A 4.3" glass touchscreen mounts inside the sauna, holds three heat profiles (Mild, Cozy, Hot), and learns how quickly your particular room heats, so it tells you exactly when the sauna will be ready rather than making you guess. Pair it with the MyHarvia app and you can start the sauna from your phone on the drive home and walk into a room already at temperature. Over-the-air updates mean the panel keeps getting better after it's on the wall. The kit includes everything but the electrician: Harvia Spirit SP60E 6 kW heater, black Harvia Fenix 4.3" Wi-Fi touchscreen control panel Fenix power unit Heater temperature sensor with cable 3.0 m silicone connection cable 60 kg of genuine Harvia round olivine diabase stones (5–10 cm) Suits sauna rooms of 5–8 m³ with a minimum ceiling height of 2.0 m. Must be installed and connected by a licensed electrician.