# HUUM 4 STEEL Mini Series 3.5kW Sauna Heater

> HUUM 4 STEEL Mini Series 3.5kW Sauna Heater is a heater from HUUM heaters. It uses electric heat. Lowest in-stock price on file: $1,576 at Haven of Heat (checked Oct 7, 2026).

- Line: [HUUM heaters](https://saunagrid.com/lines/huum-heaters/)
- Category: [Sauna heaters](https://saunagrid.com/compare/heater/)
- Status: current
- Data confidence: inferred (last verified 2026-10-07; [what this means](https://saunagrid.com/how-we-compare/#confidence))
- Page: https://saunagrid.com/products/huum-heaters-4-steel-mini-series-3-5kw/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model / SKU | not published |  |
| Heat | electric | [saunakits.com](https://saunakits.com/products/humm-steel-mini-series-3-5kw-sauna-heater) (retailer, page, 2026-10-07) |
| Outside size (L×W×H) | not published |  |
| Weight | not published |  |
| Power | 3.5 kW | [saunakits.com](https://saunakits.com/products/humm-steel-mini-series-3-5kw-sauna-heater) (retailer, page, 2026-10-07) |
| Voltage | 240 | [saunakits.com](https://saunakits.com/products/humm-steel-mini-series-3-5kw-sauna-heater) (retailer, page, 2026-10-07) |
| Circuit | not published |  |
| Plugs in | not published |  |
| Top temperature (claimed) | not published |  |
| Room size it heats | 106-177 cu ft | [saunakits.com](https://saunakits.com/products/humm-steel-mini-series-3-5kw-sauna-heater) (retailer, page, 2026-10-07) |
| Electrical safety listing | not published |  |
| Warranty: heater | not published |  |

## Accessories made for this model

- [HUUM Stones for Cliff, Cliff Mini, Steel, and Steel Mini Models](https://saunagrid.com/products/huum-accessories-stones-for-cliff-cliff-mini-steel-and-steel-mini-models/) (heater stones)
- [HUUM Steel Safety Railing](https://saunagrid.com/products/huum-accessories-steel-safety-railing/) (heater guard / railing) — $409

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Haven of Heat | $1,576 | in stock | 2026-10-07 | [View at Haven of Heat](https://havenofheat.com/products/huum-steel-electric-sauna-heater-3-5kw) |
| Nordica Sauna | $1,576 | in stock | 2026-10-07 | [View at Nordica Sauna](https://saunakits.com/products/humm-steel-mini-series-3-5kw-sauna-heater) |
| Peak Primal Wellness | $1,576 | in stock | 2026-10-07 | [View at Peak Primal Wellness](https://peakprimalwellness.com/products/huum-steel-mini-series-3-5kw-sauna-heater) |
| Recovery For Athletes | $1,576 | in stock | 2026-10-07 | [View at Recovery For Athletes](https://www.recoveryforathletes.com/products/huum-steel-mini-4-electric-sauna-heater) |
| SaunaPlace | $1,576 | in stock | 2026-10-07 | [View at SaunaPlace](https://www.saunaplace.com/products/huum-steel-mini-3-5kw) |
| Sun Valley Saunas | $1,576 | in stock | 2026-10-07 | [View at Sun Valley Saunas](https://sunvalleysaunas.com/products/huum-steel-mini-3-5kw-electric-sauna-heater) |
| Topture | $1,576 | in stock | 2026-10-07 | [View at Topture](https://topture.com/products/steel-mini-series-sauna-heater) |

Prices are re-checked weekly; a date more than a month old means the store could not be re-read.

## The equivalent in other lines

Same category, different line:

- [Cozy Heat Quattro 18kW Thru-Wall Wood Burning Sauna Stove](https://saunagrid.com/products/cozy-heat-heaters-quattro-thru-wall-wood-burning-sauna-stove-18kw/) — $2,884.50
- [Cozy Heat Quattro 12kW Thru-Wall Wood Burning Sauna Stove](https://saunagrid.com/products/cozy-heat-heaters-quattro-thru-wall-wood-burning-sauna-stove-12kw/) — $2,452.50
- [Cozy Heat SW 18kW Thru-Wall Wood Burning Sauna Stove](https://saunagrid.com/products/cozy-heat-heaters-sw-thru-wall-wood-burning-sauna-stove-18kw/) — $2,884.50
- [Cozy Heat SW 12kW Thru-Wall Wood Burning Sauna Stove](https://saunagrid.com/products/cozy-heat-heaters-sw-thru-wall-wood-burning-sauna-stove-12kw/) — $2,214
- [Cozy Heat OG 18kW Thru-Wall Wood Burning Sauna Stove](https://saunagrid.com/products/cozy-heat-heaters-og-thru-wall-wood-burning-sauna-stove-18kw/) — $2,857.50
- [Cozy Heat OG 12kW Thru-Wall Wood Burning Sauna Stove](https://saunagrid.com/products/cozy-heat-heaters-og-thru-wall-wood-burning-sauna-stove-12kw/) — $2,452.50
- [Cozy Heat Quattro 18kW Wood Burning Sauna Stove](https://saunagrid.com/products/cozy-heat-heaters-quattro-wood-burning-sauna-stove-18kw/) — $2,529
- [Cozy Heat Quattro 12kW Wood Burning Sauna Stove](https://saunagrid.com/products/cozy-heat-heaters-quattro-wood-burning-sauna-stove-12kw/) — $2,214


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SaunaGrid lists home saunas from every brand side by side, with a source for every spec and a date on every price. [How we compare](https://saunagrid.com/how-we-compare/). Data as of 2026-10-10.