The Wall SW80 BlackSteel (HSW8U1B)
From $1,557.00 across 3 verified retailersprice seen 2026-09-01Where to buy
Electrical supply, as published
1-group connectionseparate circuit
| Breaker / fuse size | Not stated by manufacturerThis manufacturer does not publish a breaker size for this model. We will not calculate one — that is the electrician’s determination under your local code. |
|---|---|
| Minimum wire size | 8 AWGAs stated by the manufacturer. Your installation may require more. |
| Current draw | 33.4 A |
| Voltage / phase | 240 V 1 ph |
2-group connectionseparate circuit
| Breaker / fuse size | Not stated by manufacturerThis manufacturer does not publish a breaker size for this model. We will not calculate one — that is the electrician’s determination under your local code. |
|---|---|
| Minimum wire size | 10 AWGAs stated by the manufacturer. Your installation may require more. |
| Current draw | 22.3 A |
| Voltage / phase | 240 V 1 ph |
Compare all 7 8 kW heaters in the datasetRoom volumes and the electrical figures each manufacturer publishes, side by side.
Size at a glance
Core specifications
| Brand | Harvia |
|---|---|
| Model | The Wall SW80 BlackSteel (HSW8U1B) |
| Series | The Wall |
| Rated output | 8 kW, 240 V 1 ph |
| Room volume range | 177–431 ft³ (5–12 m³)5–12 m³ as published |
| Dimensions | 17 × 10.2 × 27.6 in; net 32.5 lbs |
| Rock capacity | 44 lb |
| Mounting | wall |
Controls, clearances & certification
| Control type | manual switches (built-in 1 h timer) |
|---|---|
| Control included | Yes |
| Safety clearances | front 3 in, sides 3 in, ceiling ≈3.59–3.68 ft, floor 3 ph 9.8–10 in, floor 1 ph 2.9 in |
| Certifications / listings | Not stated by manufacturer |
| Indoor / outdoor rating | Not stated by manufacturer |
What this manufacturer does not publish
We list these openly because an unpublished specification is itself information — it tells you what to ask the dealer before you buy.
- breakerAmps
- indoorOutdoorRating
- msrp
No source conflict recorded for this model
The sources we consulted for this model agreed with each other. That is not a guarantee the manufacturer’s documents agree everywhere — only that we found no disagreement between the spec page, the manual and the listings we checked. Where we do find one, we publish both values and both sources instead of quietly choosing the more convenient figure.
Transcription notes
SKU: HSW8U1BUL. IPX4. Minimum sauna height: 75 in / 1900 mm. Manual publishes alternative 1-group and 2-group connection figures; values are retained separately and not merged.
Where to buy
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Sources for this page
Transcribed and checked . Manufacturers revise specifications without notice; the document above is authoritative, not this page.