The Harvia Virta Combi HL90SA is a 9kW floor-standing electric sauna heater with an integrated 5-liter steamer, designed for larger home saunas and dedicated wellness spaces. It supports dry sauna, steam-enhanced, and aromatherapy sessions in a single unit — giving you full control over your sauna environment without additional equipment. Built in Finland with a stainless steel finish, the HL90SA is engineered for long-term reliability and consistent performance.
Why Customers Choose This Heater
- Combines a high-output electric heater and a built-in steamer in one floor-standing unit
- Supports three session types: dry sauna, steam sauna, and aromatherapy
- UL Listed — meets North American electrical safety standards
- Designed and manufactured in Finland by Harvia, a globally recognized sauna brand
- Removable heating element tray simplifies routine maintenance
- Compatible with optional Harvia digital controls for precise session management
Product Highlights
9kW Output for Larger Sauna Rooms
Rated at 9kW, the HL90SA is sized for sauna rooms between 355 and 494 adjusted cubic feet. It delivers consistent, even heat throughout the session.
Integrated 5-Liter Steamer
The built-in 5-liter stainless steel water reservoir generates steam on demand. Manual fill design keeps the system straightforward and low-maintenance.
Aromatherapy Compatible
Add essential oils to the water reservoir to incorporate aromatherapy into your sauna sessions. No separate diffuser required.
External Digital Control Ready
The HL90SA requires an external digital control system (sold separately). It is compatible with the Harvia Xenio CX30C-U1 Digital Control with WiFi for remote and app-based session management.
100 lb Stone Capacity
Holds up to 100 lbs of sauna stones (approximately 3 boxes, stones not included) for traditional löyly — the steam produced by pouring water over heated stones.
Finnish Engineering and Build Quality
Harvia has manufactured sauna equipment in Finland since 1950. The HL90SA reflects that heritage with durable materials and precise construction standards.
Specifications
| Model | Virta Combi HL90SA |
|---|---|
| Power Output | 9.0 kW |
| Fuel Type | Electric |
| Steamer Capacity | 5 liters |
| Room Coverage (Adjusted) | 355 – 494 cubic feet |
| Voltage | 240V |
| Phase | Single Phase (1PH) |
| Control Type | External digital control required (sold separately); compatible with Harvia Xenio CX30C-U1 |
| Stone Capacity | 100 lbs / approx. 3 boxes (stones not included) |
| Width | 17" (432 mm) |
| Depth | 17" (432 mm) |
| Height | 33" (838 mm) |
| Certifications | UL Listed |
| Country of Origin | Finland |
| SKU | 120-HL9U1SA |
What's in the Box
- Harvia Virta Combi HL90SA 9kW Electric Sauna Heater with Built-In Steamer
- Removable Heating Element Tray
- 5-Liter Manual Fill Water Reservoir
- Mounting and Wiring Hardware
- Installation and User Manual
Ideal For
- Home saunas between 355 and 494 adjusted cubic feet
- Users who want both dry and steam sauna capability in one unit
- Sauna rooms requiring a floor-standing heater with a compact footprint
- Installations where a digital control system will be added separately
- Homeowners seeking a long-term, low-maintenance sauna heating solution
Important Information
- Professional electrical installation is required. The HL90SA operates on 240V single-phase power and must be wired by a licensed electrician in accordance with local electrical codes.
- An external digital control system is required for operation and is sold separately. The heater is not operable without a compatible control unit.
- Sauna stones are not included. Use only stones rated for sauna use. Do not use river rocks or decorative stones.
- Maintain a minimum clearance distance from combustible materials as specified in the installation manual.
- This product is UL Listed and intended for residential sauna use. Do not use in commercial or public sauna facilities without verifying applicable local codes.
- The water reservoir must be filled manually before each steam session. Do not operate the steamer without water.
- Review the full installation manual before beginning any installation work.
Frequently Asked Questions
What size sauna room is the HL90SA designed for?
The Harvia Virta Combi HL90SA is rated for sauna rooms between 355 and 494 adjusted cubic feet. Room sizing accounts for wall insulation, ceiling height, and glass or tile surfaces. Use a sauna heater sizing guide to calculate your adjusted cubic footage before purchasing.
Does the HL90SA include a control panel?
No. The HL90SA requires an external digital control system, which is sold separately. It is compatible with the Harvia Xenio CX30C-U1 Digital Control with WiFi. The heater cannot be operated without a compatible control unit.
Can I use this heater for both dry and steam sauna sessions?
Yes. The HL90SA supports dry sauna, steam-enhanced sauna, and aromatherapy sessions. The integrated 5-liter steamer allows you to add humidity to your session. You can also add essential oils to the water reservoir for aromatherapy use.
Are sauna stones included?
Sauna stones are not included. The HL90SA holds up to 100 lbs of sauna stones (approximately 3 boxes). Use only stones rated for sauna use — do not use river rocks or decorative stones, as they can crack under high heat.
What electrical requirements does this heater have?
The HL90SA operates on 240V single-phase power. Professional installation by a licensed electrician is required. Consult the installation manual and your local electrical code before beginning installation.
Is the HL90SA UL Listed?
Yes. The Harvia Virta Combi HL90SA is UL Listed, confirming it meets North American electrical safety standards.
How do I maintain the heater?
The HL90SA features a removable heating element tray that simplifies routine maintenance and element replacement. Refer to the installation and user manual for full maintenance instructions and recommended service intervals.
The Harvia Virta Combi HL90SA is a well-built, versatile sauna heater for homeowners who want reliable performance and the flexibility of both dry and steam sauna in a single unit. If you have questions about sizing, compatibility, or installation requirements, contact us before ordering — we're here to help you get the right heater for your space.
Sauna use is a personal wellness practice. Consult a qualified healthcare provider before use if you have any medical conditions or concerns.