Sauna Heaters

143 products

Sauna Heaters

The heater is the heart of every traditional sauna. Choose from precise electric wall or floor models, high-mass “rock tower” designs, combi heaters with built-in steam, or classic wood-burning stoves for outdoor cabins. Correct sizing (kW), quality stones, and the right controls deliver fast heat-up, consistent temperatures, and satisfying löyly (steam bursts).

Right-Sized Heat
Match kW to room volume; upsize for glass/stone/exterior walls.
Löyly Ready
Stone baskets engineered for even steam when water is ladled.
Control Options
Manual dials, digital panels, remote/Wi-Fi, or external controllers.
Indoor or Outdoor
Electric for most indoor installs; wood stoves for outdoor saunas.

Sauna Heaters — Frequently Asked Questions

What types of sauna heaters are available?

There are two primary types: electric heaters and wood-burning heaters. Electric models offer precise control and ease of use, while wood-burning units provide a traditional experience with natural heat and aroma.

What is the difference between electric and wood-burning heaters?

Electric heaters provide fast, controllable heat and are easy to install. Wood-burning heaters require no electricity, offer a traditional experience, and often generate higher humidity levels when water is poured on the stones.

How do I size a sauna heater?

Calculate interior volume (L×W×H). Use the manufacturer’s chart to select kW. Increase capacity for heavy glass, tile/stone, high ceilings, or exterior walls. As a rule of thumb, small rooms (45–90 ft³) use ~3–4.5 kW; medium (100–200 ft³) ~6–8 kW; large (200–350 ft³) ~9–12 kW.

How hot do sauna heaters get?

Most heaters operate within 150–190°F (65–90°C). Wood-burning units can sometimes reach higher peaks, depending on airflow and stove size. Temperature is adjusted with built-in or external controls.

What stones should I use with my sauna heater?

Special igneous sauna stones are designed to handle repeated heating and cooling. Avoid regular rocks, as they may crack or explode when exposed to high heat and water.

How often do sauna heaters need maintenance?

Routine tasks include cleaning dust or ash, checking wiring or chimney integrity, and replacing worn stones. Most electric heaters last 8–12 years with proper care, while wood-burning stoves can last decades.

120V vs. 240V—what’s the difference?

120V heaters are limited and typically for very small rooms. Most traditional saunas use 240V dedicated circuits for faster heat-up and stable temps. Larger commercial units may use 3-phase where available.

Can I pour water on the heater?

Yes—if the heater is designed for steam and loaded with approved sauna stones. Never pour oils directly on stones; add sauna fragrance only when diluted into ladle water and follow the manual.

What’s a “combi” heater?

A combi (heater + steam) includes an integrated reservoir to generate gentle humidity alongside traditional dry heat—great for lower-temperature, longer sessions.

Wall-mount vs. floor-standing?

Wall-mount units save space and suit small to medium rooms. Floor-standing/high-mass towers hold more stones for softer, longer heat and bigger rooms.

Do I need ventilation with an electric heater?

Yes. Even small rooms benefit from supply and exhaust vents per the cabin/heater manual to maintain fresh air and even temperatures.

Who should install the heater?

A licensed electrician is required for electric heaters. Wood stoves require proper chimney components, clearances, spark protection, and local code compliance.

Buying Guide: How to Choose a Sauna Heater

Step 1 — Measure the Room

Calculate interior volume and note features that add heat load (glass, stone/tile, exterior walls, high ceilings). Plan bench and heater clearances.

Step 2 — Select Heater Type

  • Electric Wall-Mount (3–9 kW): Space-saving, fast heat, precise control.
  • Electric Floor-Standing / Rock Tower (9–12+ kW): Larger stone mass for smooth, humid heat.
  • Combi (Heater + Steam): Built-in reservoir for adjustable humidity.
  • Wood-Burning Stove (outdoor only): Off-grid ritual; chimney and clearances required.

Step 3 — Choose Controls

  • Built-In Dials: Simple timer/thermostat on the heater body.
  • External Digital: Wall keypad; precise temp, timers, safety lockouts.
  • Wi-Fi / App: Remote preheat, schedules, multi-user profiles (model dependent).

Step 4 — Stones & Steam

  • Use approved igneous sauna stones. Rinse, load per manual, and replace cracked stones.
  • Open baskets = faster steam response; high-mass towers = gentle, longer löyly.

Step 5 — Power & Safety

  • Electric: 240V dedicated circuit sized to amperage; properly rated disconnects and breakers.
  • Wood: Chimney path, hearth/heat shields, floor protection, and clearances to combustibles.
  • Certifications: Look for UL/ETL or equivalent listings and follow local code.

🔎 Sizing — Quick Reference (Typical)

Room Volume (ft³) Suggested kW Notes
45–90 3.0–4.5 kW 1-person / micro rooms
100–150 6.0 kW Compact 2–3 person
150–210 7.5–8.0 kW 3–4 person
210–300 9.0–10.5 kW 4–5 person
300–360 12.0 kW 5–6 person

Always defer to the specific manufacturer’s sizing chart. Add capacity for heavy glass/stone/exterior walls or cold climates.

Product Lineup

Electric Wall-Mount Heaters (3–9 kW) Space-Saver

Slim profiles for small to medium rooms with quick heat-up.

Shop Wall-Mount

Floor-Standing / Rock Tower (9–12+ kW) High-Mass

Large stone capacity for smooth, humid heat and bigger rooms.

Shop Rock Towers

Combi Heaters (Heater + Steam) Humidity

Integrated reservoir for gentle steam at lower temps.

Shop Combi

Wood-Burning Stoves Outdoor Only

Traditional ritual with stove, stones, and proper chimney kits.

Shop Wood Stoves

Controls & Wi-Fi Modules Smart

Digital keypads, remotes, and app control for preheat and scheduling.

Shop Controls

Stones, Guards & Accessories Essentials

Approved stones, stone guards, heat shields, and mounting kits.

Shop Essentials

Key Benefits of Quality Sauna Heaters

  • Faster, more even heat-up with properly matched kW.
  • Consistent temperatures and satisfying steam over stones.
  • Flexible controls—from simple dials to Wi-Fi preheat.
  • Designs for any room size: compact wall units to high-mass towers.
  • Outdoor wood-burning options for an authentic off-grid experience.

Compare Options

Type Best For Highlights Shop
Electric Wall-Mount Small–medium rooms Compact, quick heat, simple install View
Floor / Rock Tower Medium–large rooms High stone mass, soft/humid löyly View
Combi (Heater + Steam) Lower-temp, longer sessions Built-in humidity control View
Wood-Burning Stove Outdoor/off-grid Chimney kit, classic ritual View
Digital / Wi-Fi Controls Convenience & safety Timers, lockouts, remote preheat View
Stones & Heat Shields Performance & safety Even steam, proper clearances View

Care, Warranty & Shipping

Rinse new stones, stack per the manual (air gaps matter), and replace cracked stones periodically. Keep clearances around the heater, check fasteners/guards, and verify sensor placement for digital controls. Electrical work must be performed by a licensed professional; wood stoves require proper chimney parts and heat shields. Most heaters include manufacturer warranties on elements, controls, and housings (coverage varies). Units ship boxed/crated; some models include separate control panels and sensors.

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