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Haven & Plunge

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Sauna Heater Sizing: Matching kW to Your Room

Illustrative photo of an indoor sauna, not the exact Leil model

Illustrative photo of this product type, not the exact Leil Saunas model. Photo: Unsplash.

Leil Saunas

Como 150 2-Person Indoor Sauna Kit

An Estonian-made 2-person indoor sauna kit with 40mm ThermoWood walls, a glass door, and two-level aspen benches; heater sold separately (4-8kW).

Capacity
2 people
Installation
indoor
Dimensions
Exterior: 59.1"W x 56.6"D x 86.6"H; interior 54.7"W x 51.6"D x 78.6"H
Power
220-240V hardwired circuit with a dedicated breaker, sized for the heater you add; 120V for LED lighting

Price checked Oct 18, 2026.

We may earn a commission if you purchase through this link, at no extra cost to you. Price and availability are set by Select Saunas and subject to change.Information last checked October 18, 2026.

Como 150 2-Person Indoor Sauna Kit

$8,080

Check Current Price

Who it may suit

  • Couples who want a Scandinavian-built cabin and their own heater
  • Buyers with a tall room (2.4m or more) to fit an 86.6" cabin

Key Specifications

Capacity
2 people
Exterior Dimensions
1,500 x 1,437 x 2,200mm (59.1" x 56.6" x 86.6")
Interior Dimensions
1,389 x 1,310 x 1,995mm (54.7" x 51.6" x 78.6")
Walls
40mm (1.57") Lunawood ThermoWood (thermally modified pine)
Heater
Not included; 4-8kW electric recommended (Saunum, HUUM, or Harvia)
Warranty
2-year manufacturer's warranty

Key Features

  • 40mm ThermoWood log walls and two-piece insulated ceiling
  • 8mm clear tempered glass door
  • Two-level aspen benches with backrest
  • Adjustable feet for leveling

Installation

Stable, level surface; 600mm clearance around the sauna and a ceiling of at least 2,400mm (per the listing); 2-3 people, 5-7 hours to assemble

Warranty

Warranty terms: check manufacturer.

What the listing said when we checked it on Oct 18, 2026: 2-year manufacturer's warranty covering materials, manufacturing defects, and pre-transport damage

Pros

  • + Full interior and exterior dimensions, bench sizes, and volume published
  • + Thick 40mm walls
  • + Room for a 4-8kW heater of your choice

Cons

  • − Heater sold separately, on top of $8,080
  • − 2-year warranty, against 5 years on the Golden Designs cabins
  • − Heavy, at 550-650 kg (1,210-1,430 lbs) assembled

Our Take on the Como 150 2-Person Indoor Sauna Kit

By

Short answer: the Como 150 is a 2-person indoor sauna kit made in Estonia with 40mm ThermoWood walls, for $8,080 at Select Saunas without a heater. Leil recommends a 4-8kW electric heater. It needs a tall room and a 220-240V hardwired circuit, and the warranty is 2 years.

Will it fit?

Outside, it is 1,500 x 1,437mm and 2,200mm tall (59.1” x 56.6” x 86.6”). The listing asks for 600mm of clearance on all sides and a ceiling of at least 2,400mm (about 7 ft 10 in).

Here’s what the spec sheet won’t tell you: that makes the space you need roughly 2.7 x 2.6m, our arithmetic from the clearances, much more than the cabin itself.

Inside

The room is 1,389 x 1,310 x 1,995mm (54.7” x 51.6” x 78.6”), about 1.8 to 2.0 cubic meters. The top bench is 526 x 1,389mm and the lower one 400 x 905mm, both aspen, with a backrest.

At 54.7” wide, nobody lies flat. Two people sit side by side.

The heater you still need

No heater comes in the kit. Leil recommends 4 to 8kW electric, naming Saunum, HUUM, and Harvia. The electrical requirement is a 220-240V hardwired connection with a dedicated breaker, and the amperage depends on the heater. Traditional Sauna Heater Sizing helps you pick within that range.

Weight and assembly

The listing estimates 550 to 650 kg (1,210 to 1,430 lbs) assembled. Assembly takes 2 to 3 people 5 to 7 hours, with 3 recommended for the glass door.

You get, you give up

You get thick ThermoWood walls and a listing that publishes nearly every dimension. You give up a heater in the price and length of warranty: 2 years.

Bottom line: a premium shell for a couple with a tall room and a heater budget. Add the heater and electrician to $8,080 before you compare it with the heater-included Golden Designs Hanko at $5,999.

Not medical advice.This page is general product information. Heat and cold exposure aren't safe for everyone. Talk to a physician before starting a sauna or cold plunge routine, particularly if you are pregnant or have a heart, blood pressure, or circulation condition. See our Editorial Policy.

Alternatives to Consider

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Almost Heaven

Bridgeport 6-Person Indoor Sauna

A 6-person indoor cabin with a Harvia 8.0kW heater included, a choice of white fir or rustic cedar, and a limited lifetime warranty.

Capacity
6 people
Placement
Indoor

May suit: Larger households wanting genuine 6-person indoor capacity with the heater included

$5,337Was $8,561

Checked Oct 1, 2026

Reference price: Select Saunas compare-at price on its product listing, checked Oct 1, 2026

Almost Heaven

Grandview 4-6 Person Canopy Barrel Sauna

A wide-body 4-6 person canopy barrel sauna that ships with a heater included — electric or wood-burning — and a limited lifetime warranty.

Capacity
4-6 people (holds up to 8)
Placement
Outdoor

May suit: Larger groups or families wanting genuine 6-8 person barrel capacity

$6,358Was $10,688

Checked Oct 1, 2026

Reference price: Select Saunas compare-at price on its product listing, checked Oct 1, 2026

Frequently Asked Questions

How hot does a traditional sauna get?

Traditional saunas typically run hotter than infrared cabins, often exceeding what most infrared units reach, since they heat the surrounding air directly.

What's löyly?

Löyly is the burst of steam created when water is ladled onto the hot rocks of a traditional sauna heater.