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Harvia The Wall SW80 BlackSteel sauna heater specs and 3D room planner

Use this manual-checked Harvia The Wall SW80 BlackSteel product page to compare the kW range, adjusted room volume, clearances, controller package, rocks, and buying path before you open the sauna in the designer.

Harvia The Wall SW80 BlackSteel is a wall-mounted heater from Harvia for 106-494 cu ft adjusted sauna rooms. Key planning facts: 4.5-9 kW output, 44 lbs stone capacity, and 74.8"-78" minimum finished ceiling guidance, and controller guidance: Built-in timer and thermostat knobs / External Harvia control unit, Temperature sensor per The Wall sensor sheet.

Design with Harvia The Wall SW80 BlackSteel Buy in North America at Sauna Marketplace

Power
8 kW
Rated room volume
106-494 cu ft
Mounting
Wall-mounted
Rock capacity
44 lb
Dimensions
16.9" W x 10.2" D x 24" H / 16.9" W x 10.2" D x 27.6" H
Side/rear clearance
1.38"-3.15"
Front clearance
1.38"-3.15"
Top to ceiling clearance
47.2"
Minimum finished ceiling
74.8"-78"
Cold-surface rule
3.94 cu ft per sq ft (1.2 m3 per 1 m2) for glass, stone, tile, brick, concrete, or similar cold surfaces
Controllers
Built-In Timer and Thermostat, Built-in timer and thermostat knobs, External Harvia control unit

Quick answers

What is Harvia The Wall SW80 BlackSteel?

Harvia The Wall SW80 BlackSteel is a wall-mounted heater from Harvia with 4.5-9 kW output and 44 lbs stone capacity.

What sauna room size fits Harvia The Wall SW80 BlackSteel?

The published adjusted room-volume range is 106-494 cu ft. Add glass, tile, stone, brick, concrete, or log exposure before choosing the final kW row.

What clearances does Harvia The Wall SW80 BlackSteel need?

Plan 1.38"-3.15" side/back clearance, 1.38"-3.15" front clearance, and a 74.8"-78" minimum finished ceiling check before placing benches or glass.

Which controller works with Harvia The Wall SW80 BlackSteel?

Current controller guidance: Built-in timer and thermostat knobs / External Harvia control unit, Temperature sensor per The Wall sensor sheet. Match the controller, relay or power unit, and voltage to the selected kW row before ordering.

Where should I start with Harvia The Wall SW80 BlackSteel?

Use the 3D designer to validate the room, benches, openings, clearances, and material schedule, then use Sauna Marketplace for the current package and buying path.

Harvia The Wall SW80 BlackSteel size and clearance table

Variant Power Room volume Dimensions Rocks Side/back Front Minimum ceiling Controller
SW45SW45 4.5 kW 106-212 cu ft 16.9" W x 10.2" D x 24" H 44.1 lb 1.38" 1.38" 74.8" Built-in timer and thermostat knobs
SW60SW60 6 kW 177-283 cu ft 16.9" W x 10.2" D x 24" H 44.1 lb 1.57" 1.57" 74.8" Built-in timer and thermostat knobs
SW80SW80 8 kW 247-424 cu ft 16.9" W x 10.2" D x 27.6" H 44.1 lb 2.76" 2.76" 78" Built-in timer and thermostat knobs
SW90SW90 9 kW 283-494 cu ft 16.9" W x 10.2" D x 27.6" H 44.1 lb 3.15" 2.76" 78" Built-in timer and thermostat knobs
SW45ESW45E 4.5 kW 106-212 cu ft 15" W x 10.2" D x 24" H 44.1 lb 1.38" 1.38" 74.8" External Harvia control unit, Temperature sensor per The Wall sensor sheet
SW60ESW60E 6 kW 177-283 cu ft 15" W x 10.2" D x 24" H 44.1 lb 1.97" 1.57" 74.8" External Harvia control unit, Temperature sensor per The Wall sensor sheet
SW90ESW90E 9 kW 283-494 cu ft 15" W x 10.2" D x 27.6" H 44.1 lb 3.15" 3.15" 78" External Harvia control unit, Temperature sensor per The Wall sensor sheet

Best fit

  • 4.5-9 kW Harvia heater family for 106-494 cu ft adjusted hot rooms.
  • Wall-mounted layouts where the heater footprint, front clearance, and bench approach are planned before ordering.
  • 44 lbs stone capacity with Built-in timer and thermostat knobs / External Harvia control unit, Temperature sensor per The Wall sensor sheet controller guidance.
  • Rooms that can meet the 74.8"-78" minimum finished ceiling check for the selected size row.
  • Wall blocking, cladding buildup, and heater bottom height should be resolved before paneling goes in.

Designer checks

  • Size the room by adjusted volume, including the 3.94 cu ft per sq ft (1.2 m3 per 1 m2) for glass, stone, tile, brick, concrete, or similar cold surfaces rule where it applies.
  • Validate side/back clearance 1.38"-3.15", front clearance 1.38"-3.15", and bench setback before finalizing benches.
  • Check the 74.8"-78" minimum finished ceiling against the room height.
  • Carry the selected Built-in timer and thermostat knobs / External Harvia control unit, Temperature sensor per The Wall sensor sheet package into the material schedule and heater placement notes.

Package notes

  • Harvia The Wall wall-mounted heater body with built-in timer and thermostat
  • 44 lb; 44 lb Sauna Stones for Harvia The Wall
  • Reversible left/right control-side installation hardware
  • 44 lb Sauna Stones for Harvia The Wall
  • Harvia HSW1 Embedding Flange

Manual-backed facts

Source

Harvia The Wall installation and use manual

source: Harvia The Wall installation manual, safety/sensor/electrical sheets, HSW1 flange manual, and CAD archive (SW/SWE Y05-0365 10012025 manual for serial 224020232 or later; safety 525, sensor 524, electrical 564/566, flange Y05-1236, and SAT-derived protected GLBs; checked May 25, 2026)

Mounting

Wall-mounted

Floor clearance shows the minimum bottom height where the manual lists one.

Model numbers

SW45 / SW60 / SW80 / SW90 / +3 more

Useful when the store name and manual model number are not identical.

Room volume range

106-494 cu ft

Use adjusted sauna volume after cold surfaces, not just geometric room volume.

Body weight

20.3-30 lb

Listed body weight before stones; verify shipping weight with the final SKU.

Wall-mount reference

19.3"-22.8"

Row-specific wall-mount reference dimension from the manufacturer safety drawing.

Minimum plan envelope

17.7"-23.2" W x 11"-11.4" D

Manufacturer safety drawing C+X+C and Y+A minimum space requirement by model row.

Cold-surface adder

3.94 cu ft per sq ft (1.2 m3 per 1 m2) for glass, stone, tile, brick, concrete, or similar cold surfaces

The calculator applies the brand-family coefficient before selecting a heater size.

Minimum finished ceiling

74.8"-78"

Computed from body height, floor clearance, top clearance, and the manual minimum room height.

Maximum room height

Not listed for these sizes

Verify with the selected manual when designing unusually tall rooms.

Electrical/control

400V 3N~: 3x10 A, 5x1.5 mm2, 230V 3~: 3x16 A, 4x1.5 mm2, 230V 1N~: 25 A, 3x2.5 mm2; Built-in timer and thermostat knobs / 400V 3N~: 3x10 A, 5x1.5 mm2, 230V 3~: 3x16 A, 4x1.5 mm2, 230V 1N~: 35 A, 3x6 mm2; Built-in timer and thermostat knobs / +5 more

Use the selected kW row and SKU when matching breakers, phases, relays, and controller packages.

Critical differences

Body weight 24.5 lb; safety drawing minimum envelope 19.69 in W x 11.02 in D. Safety drawing wall-mount reference height 19.29 in and 80 mm bottom safety distance.

10 more notes shown below.

  • Body weight 24.5 lb; safety drawing minimum envelope 19.69 in W x 11.02 in D.
  • Safety drawing wall-mount reference height 19.29 in and 80 mm bottom safety distance.
  • SW models include built-in timer and thermostat controls.
  • HSW1 embedding flange is listed for compatible The Wall sizes; verify final accessory and bench opening before cutting.
  • Body weight 25.6 lb; safety drawing minimum envelope 20.08 in W x 11.42 in D.
  • Harvia US designer archive includes 240V 1-phase SW60 Steel and BlackSteel product records.
  • Body weight 30 lb; safety drawing minimum envelope 22.44 in W x 11.42 in D.
  • Safety drawing wall-mount reference height 22.83 in and 80 mm bottom safety distance.
  • Harvia US designer archive includes 240V 1-phase SW80 Steel and BlackSteel product records.
  • Body weight 30 lb; safety drawing minimum envelope 23.23 in W x 11.42 in D.
  • Body weight 20.3 lb; safety drawing minimum envelope 17.72 in W x 11.02 in D.
  • SWE external-control models require a compatible Harvia control unit and sensor placement per the sensor sheet.

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