# Redwood Outdoors Retreat Indoor Sauna - 4 Person

> Redwood Outdoors Retreat Indoor Sauna - 4 Person (SN-IBU-H4K001F) is a large sauna from Redwood Outdoors indoor saunas. It uses electric heat, is built for indoor use, seats up to 4, and measures 54.25 × 72.5 × 79.5 in outside (L × W × H). Lowest in-stock price on file: $5,499 at Redwood Outdoors (checked Oct 7, 2026).

- Line: [Redwood Outdoors indoor saunas](https://saunagrid.com/lines/redwood-outdoors-indoor/)
- Category: [Saunas](https://saunagrid.com/compare/sauna/)
- Size tier within its line: large
- Status: current
- Data confidence: confirmed (last verified 2026-10-07; [what this means](https://saunagrid.com/how-we-compare/#confidence))
- Page: https://saunagrid.com/products/redwood-outdoors-indoor-retreat-4-person/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model / SKU | SN-IBU-H4K001F | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Heat | electric | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Setting | indoor | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Shape | not published |  |
| Seats | 4 | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Outside size (L×W×H) | 54.25 × 72.5 × 79.5 in | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Inside size (L×W×H) | not published |  |
| Weight | 800 lb | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Power | 6 kW | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Voltage | 240 | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Circuit | 30 A | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Plugs in | not published |  |
| Top temperature (claimed) | not published |  |
| Heater | 6kW Harvia KIP | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Heater included in the price | yes | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Wood | not published |  |
| Thermally modified wood | yes | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) (brand, page, 2026-10-07) |
| Wall / stave thickness | not published |  |
| Arrives | not published |  |
| Electrical safety listing | not published |  |
| Warranty: cabin | 1 year | [redwoodoutdoors.com](https://www.redwoodoutdoors.com/pages/warranty-saunas) (brand, page, 2026-10-07) |
| Warranty: heater | not published |  |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Redwood Outdoors | $5,499 | in stock | 2026-10-07 | [View at Redwood Outdoors](https://www.redwoodoutdoors.com/products/sanctuary-indoor-sauna-4-person) |

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, same size tier (large), different line:

- [Almost Heaven Appalachia 6 Person Cabin Sauna (electric)](https://saunagrid.com/products/almost-heaven-outdoor-appalachia-6-person-cabin-electric/) — $12,650
- [Almost Heaven Appalachia 6 Person Cabin Sauna (wood-fired)](https://saunagrid.com/products/almost-heaven-outdoor-appalachia-6-person-cabin-wood/) — $16,934
- [Almost Heaven Hinton 2-3 Person Infrared Sauna](https://saunagrid.com/products/almost-heaven-infrared-hinton-2-3-person/) — $6,840
- [Almost Heaven Tyrol Indoor Sauna, Large 4-5 Person](https://saunagrid.com/products/almost-heaven-indoor-tyrol-large-4-5-person/) — $6,792
- [Almost Heaven Tyrol Indoor Sauna, Large View 4-5 Person](https://saunagrid.com/products/almost-heaven-indoor-tyrol-large-view-4-5-person/) — $9,431
- [Almost Heaven Himalaya Salt Indoor Sauna, Corner 4-5 Person](https://saunagrid.com/products/almost-heaven-indoor-himalaya-salt-corner-4-5-person/) — $9,712
- [Almost Heaven Himalaya Salt Indoor Sauna, Large 6 Person](https://saunagrid.com/products/almost-heaven-indoor-himalaya-salt-large-6-person/) — $9,743
- [Almost Heaven Timberline Outdoor Sauna, Large (Yukon) 4-5 Person (electric)](https://saunagrid.com/products/almost-heaven-outdoor-timberline-large-yukon-4-5-person-electric/) — $17,354


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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.