Harvia Spirit SP90E 9kW Electric Sauna Heater — Wall-Mount | 240VAC Single Phase | Black

Transform your sauna into a sanctuary of authentic Finnish warmth. The Harvia Spirit SP90E is a premium 9.0 kW wall-mounted electric sauna heater engineered for medium-to-large sauna rooms. Crafted in Finland with over 75 years of sauna heritage behind it, the Spirit SP90E combines rapid heat-up performance, integrated safety technology, and a sleek black aesthetic that elevates any sauna installation.

Whether you're building a new home sauna or upgrading an existing space, the Harvia Spirit SP90E delivers the deep, enveloping heat that sauna enthusiasts demand — quietly, efficiently, and reliably.

Why Choose the Harvia Spirit SP90E?

The Harvia Spirit SP90E isn't just a heater — it's the centerpiece of a complete sauna wellness experience. Its elegantly curved black casing and deep stone basket deliver the kind of soft, radiating löyly (steam) that is the hallmark of a true Finnish sauna. With a 110 lb stone capacity using Harvia's Olivine Diabase stones (R-991), the Spirit generates a rich, even heat that penetrates deeply and holds steady throughout your session.

Designed to heat up your sauna quickly and efficiently, this heater is ideal for home sauna builds, spa facilities, and wellness retreats where performance and reliability are non-negotiable.

Key Features

• Made in Finland — built to Harvia's exacting Finnish quality standards with decades of sauna engineering expertise
• 9.0 kW powerful output — designed for sauna rooms from 177 to 494 adjusted cubic feet, perfect for medium to large sauna spaces
• Rapid heat-up technology — reaches optimal sauna temperatures efficiently, minimizing wait time and energy use
• Integrated safety functions — built-in safety features ensure worry-free, consistent operation during every session
• Compatible with the Harvia Xenio Control — pair with Xenio wall-mounted or Xenio Wi-Fi touchscreen control for precise digital temperature and timer management
• Compatible with the Harvia Fenix Control — connect with the smart Harvia Fenix Wi-Fi control for app-based remote control, scheduling, and smart home integration
• ETL Listed — certified for safety and performance in North American markets
• UL 875 compliant — meets stringent U.S. electrical safety standards
• IPX4 rated — splash-resistant construction for the demanding sauna environment
• Wall-mounted design — space-efficient installation keeps your sauna floor clear and accessible

Compatible Control

The Harvia Spirit SP90E is compatible with two premium Harvia control lines — the Xenio and the Fenix. Both are designed to provide precise, reliable control over your sauna experience. Here's how they compare:

Harvia Xenio Control

The Harvia Xenio is a wall-mounted digital sauna control panel designed for straightforward, intuitive sauna management. The CX45 Wi-Fi — the Xenio line is the go-to choice for users who want reliable, no-fuss control with an elegant interface.

Key Features:

• 🖥️ Backlit digital display — clear temperature and timer readout at a glance
• ⏱️ Timer & scheduling — set your sauna to preheat up to 24 hours in advance
• 🌡️ Precise temperature control — adjustable from 40°C to 110°C (104°F to 230°F)
• 💡 Lighting control — manage compatible Harvia LED lighting systems directly from the panel
• 🔒 Child lock — built-in safety lock for households with children
• 📡 Wi-Fi connectivity — control your sauna remotely via the Harvia App
• 🔌 Plug-and-play wiring — designed for straightforward installation alongside Harvia heaters
• 🏠 Wall-mounted — clean, flush installation on the sauna exterior wall
• ✅ ETL Listed — certified for North American markets

Harvia Fenix Control

The Harvia Fenix represents the next generation of smart sauna control. Built with native Wi-Fi and deep integration with the Harvia App, the Fenix transforms your sauna into a fully connected wellness device. It's the ideal choice for tech-forward users who want the ultimate in convenience, personalization, and smart home compatibility.

Key Features:

• 📱 Full smartphone control — start, stop, schedule, and monitor your sauna remotely via the Harvia App (iOS & Android)
• 📶 Native Wi-Fi built-in — no additional hub or adapter required
• 🕐 Smart scheduling & preheating — set daily or weekly sauna programs from your phone, anywhere
• 🌡️ Precise digital temperature control — 40°C to 110°C (104°F to 230°F)
• 👤 Guest Mode — share temporary sauna access with guests directly through the app
• 💨 Ventilation fan control — manage compatible sauna ventilation systems from the same panel
• 💡 Lighting & accessory control — full management of Harvia LED lighting and other compatible accessories
• 🏠 Smart home integration — compatible with Amazon Alexa and Google Home ecosystems
• 🔒 Child lock & safety timer — built-in safety features for peace of mind
• 🖐️ Touchscreen panel — sleek, modern touchscreen interface for in-sauna control
• ✅ ETL Listed — certified for North American markets

Xenio vs. Fenix — Side-by-Side Comparison

💡 Not sure which control to choose?

• Choose the Xenio CX45 if you want smartphone convenience at a more accessible price point.
• Upgrade to the Fenix if you want the full smart sauna experience with scheduling, guest access, ventilation control, and smart home integration.

What's in the Box

• Harvia Spirit SP90E 9.0 kW electric sauna heater (Black)
• Integrated safety device
• Wall-mounting bracket and hardware
• Detailed installation and user manual

Technical Specifications

All dimensions and specifications are approximate and subject to change without notice.

Delivery

Your Harvia Spirit SP90E is carefully packaged to arrive in perfect condition, protected for safe transit. The included installation manual guides you through every step of the setup process — from wiring and mounting to stone loading — so you can get your sauna up and running as quickly as possible. Please ensure your installation is performed by a qualified electrician in accordance with local codes.

Technical Notes

The Harvia Spirit SP90E is a dedicated electric sauna heater requiring a hard-wired 240V single-phase circuit. A 40-amp breaker and AWG 8 supply cable are required. A compatible Harvia Xenio or Fenix control is mandatory for operation — the heater does not include an integrated manual control. Installation must comply with all local building and electrical codes.

For proper sizing, use the Sauna Heater Sizing Tool by Finnish Sauna Builders to confirm this model suits your sauna room dimensions.

Installation Manual

📄 Click Here to Download the Harvia Spirit Installation Manual

Videos

Overview of the Spirit Heater

How to Install the Spirit Heater