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Rendering of the Kivi 2, the two-person single-wall sauna.
Architectural rendering, not a photograph of a completed build.

Kivi 2

Oiled boards, black posts and a window to the water.

2 people · Fully built from $9,100

Before electrical, permit, delivery and site prep.

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Rendering of the Kivi 2 from above with the roof off, showing the benches and heater.
Architectural rendering, not a photograph of a completed build.

Inside.

  • Seats 2 people, on a full-width cedar bench.
  • 42 inches above the upper bench, so you can sit up straight in the best of the heat.
  • Simple, lighter heat from an 8 kW wall heater.

The essentials

Seats
2 people
Footprint
5'-7" × 5'-7"
Height
9'-3½"
Heater
Harvia KIP80B, 8 kW
Walls
Natural single-wall
Heat-up, est.
25–35 min in summer, 55–80 min in winter

What's included

  • A full drawing set for your build: plans, elevations, sections and details
  • Heater, stones and controls
  • A first-fire walkthrough: how to heat it, vent it and dry it

The 240 V circuit is run by a licensed electrician. We can arrange it or work with yours.

Full specifications

The Kivi 2 is the simplest sauna we know how to build well: one thick wall of oiled boards, black posts at the corners, a cedar door and a single window. Inside is a five-foot-square room. An upper bench at 48 inches leaves 42 inches of headroom, the foot bench sits an inch and a half above the heater stones so the heat reaches all of you, and a low step by the door gets you up.

Kivi 2 specifications
Interior5'-0" W × 5'-0" D × 7'-6" H
Volume188 ft³
Footprint5'-7" × 5'-7"
Height9'-3½" grade to roof
HeaterHarvia KIP80B · 8 kW
Seats2 bathers
Headroom42" above the upper bench
Heater stonesLighter stones, lighter steam44 lb of stones
Heat-up to 175°FSummer, 90°F outside25–35 min (est.)
Heat-up to 175°FWinter, 35°F outside55–80 min (est.)
Bathing temperatureThermostat on the heater160–190°F
PriceBefore electrical, permit, delivery and site prep.Fully built from $9,100

The light stone load comes up quickly on a warm day. The uninsulated wall makes winter slower. The steam is lighter and the room cools faster when the door opens.

Heat-up times are our estimates from the heater makers' sizing guides and the wall build, not yet measured on a finished sauna.

Materials

Front
Cedar frame-and-panel door, 24¼ × 77¾, outswing, with a tempered glass strip and a 5¾" black pull, and a fixed ¼" tempered window, 23¼ × 35¼, in black trim with the sill at 44"
Walls
Horizontal 2×6 select whitewood tongue-and-groove, one board thick, no insulation
Exterior
The oiled outer face of the wall boards, in natural low-VOC oil, with black 4×4 corner posts and 2×4 battens
Interior
The raw inner face of the same boards
Ceiling
1×6 spruce tongue-and-groove at 7'-6", under tapered joists
Roof
Black 26-gauge PBR panel with drip edge, 12" front overhang, ¾" per foot fall to the rear
Benches
Western red cedar with rounded top edges, screwed from below. Upper 48" with a three-slat backrest, foot bench 32", both full width, and a 12" step at 16"
Floor and base
Lift-out cedar floor mats on pressure-treated ply, on 4×4 pressure-treated skids, with a recessed black rim for a shadow line at the base. No slab required
Ventilation
4" low intake under the heater, 6" low exhaust at the back, 4" drying vent with a damper at 7'-0"

Options

  • Wall boards: available in Whitewood, Hemlock or Cedar.
  • Heater: available in Harvia KIP80B 8 kW. Other heaters on request.
  • Lighting, sound, a deck and a shower can be planned with your sauna. Just ask.

More questions

How is it different from the Kivi 4?
The Kivi 4 is 34 inches wider, seats four, and uses a 9 kW stone-tower heater. The look and build are the same.
Why single-wall?
Thick boards hold heat well in our climate, cost less than a framed and insulated wall, and there is nothing hidden inside to trap moisture.
Why a wall-mounted heater?
The KIP80B hangs on the wall with a light load of stones, so it comes up to heat quickly and leaves the floor clear.

The drawings

Every Kivi 2 comes with its own drawing set, the same sheets the build crew works from.

Front elevation, 77S-60 · S-3Front elevation of the Kivi: horizontal board walls between black corner posts, a cedar door with a tall glass strip on the left, a fixed window in the middle and a narrow strip of boards on the right, under a black top band and a thin black metal roof. 5 feet 7 inches wide, 9 feet 3½ inches from grade to roof.5'-7" OVER POSTS9'-3½" GRADE TO ROOFBLACK PBR ROOFFIXED WINDOW23¼ × 35¼CEDAR DOOR,TEMPERED STRIPOILED 2×6 BOARDS
77S-60 · S-3Front elevation1/2" = 1'-0"
Section B-B, 77S-60 · S-2Side section of the Kivi, back wall on the left and front on the right: an upper bench at 48 inches with a three-slat backrest and 42 inches of headroom to the ceiling, a foot bench at 32 inches set 1½ inches above the heater stones, a Harvia KIP80B 8 kW heater on the side wall near the front, and the ventilation path from a low intake under the heater, up over the stones, across the ceiling and out through a low exhaust on the back wall.42" HEADROOMHARVIA KIP80B8 kWFEET ABOVETHE STONESLOW INTAKEWINDOWDRYING VENTLOW EXHAUST
77S-60 · S-2Section B-B3/4" = 1'-0"
Floor plan, 77S-60 · S-1Floor plan of the Kivi: 5 feet 7 inches square over the posts, 5 feet square inside. The upper bench runs the full width of the back wall with the foot bench in front of it and a small step by the left wall; lift-out cedar mats cover the floor; the heater hangs on the right wall near the front; the door, at the front left, swings out.5'-7" OVER POSTS5'-7"UPPER BENCH+48"FOOT BENCH+32"HARVIA 8 kWSTEP +16"CEDAR MATSDOOR SWINGS OUT,NO LOCK
77S-60 · S-1Floor plan3/4" = 1'-0"

Questions

How long does it take to heat?

We estimate 25 to 35 minutes to 175°F on a summer day (90°F outside) and 55 to 80 minutes on a winter evening (35°F outside). The single wall is the reason winter takes longer. We will publish measured times from the first build.

How is it different from the Valo 2?

Only in the walls and the front. Inside, the two are the same room: 60 by 60 inches, 7'-6" high, with the same benches, step and roof. The Kivi wraps that room in one thick wall of boards, with a cedar door and a window, in natural oil. The Valo 2 is insulated and stained black.

Does it need a permit?

An electrical permit, always. The building itself depends on your town and county. We check for your address before we build.

What power does it need?

A 240 V circuit for the 8 kW heater (33.3 A), run by a licensed electrician. We can arrange it or work with yours.

What does the site need?

Reasonably level ground we can get to. It arrives whole, or we assemble it quickly on the spot if needed. It sits on 4×4 pressure-treated skids, so no slab is required. Delivery and site prep are not in the price; we look at both when we walk the site.

Get a quote on the Kivi 2.

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Or send a photo of where it would go. We'll send back a rendering of your sauna in your yard, free.

See it in your yard
Rendering of a sauna on a lakeside deck at dusk, its window lit, with a dock and a fire pit beyond.
Architectural rendering, not a photograph of a completed build.
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