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Sauna Wood-Burning Stoves  ▸  Harvia  ▸  Legend Series  ▸  Harvia Legend 300 DUO Sauna Stove

Harvia Legend 300 DUO Wood-Burning Sauna Stove & Fireplace (23.5kW)

Harvia Legend 300 DUO Wood-Burning Sauna Stove & Fireplace (23.5kW)

for saunas with 529 - 1,059 ft³ adj. volume (most 10+ person saunas) verify your sauna

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Power OptionsHarvia Power Options

The Harvia has several different power options. The heater you're currently viewing has 23.5 kW (kilowatts) of power and is rated for use in saunas with an "adjusted volume" of 529 - 1,059 ft³ (which includes most saunas for 10+ people). If your sauna's adjusted volume doesn't fall within this range, please select the power option in this toolbar that meets your needs.

Not sure what your sauna's adjusted volume is?

Use this 20-second CALCULATOR to find out.
21.0 kW
353 - 848 ft³
21.0 kW (353 - 848 ft³)
23.5 kW
529 - 1,059 ft³
23.5 kW (529 - 1,059 ft³)
Harvia Power Options

The Harvia has several different power options. The heater you're currently viewing has 23.5 kW (kilowatts) of power and is rated for use in saunas with an "adjusted volume" of 529 - 1,059 ft³ (which includes most saunas for 10+ people). If your sauna's adjusted volume doesn't fall within this range, please select the power option in this toolbar that meets your needs.

Not sure what your sauna's adjusted volume is?

Use this 20-second CALCULATOR to find out.
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$4,639
$4,639 - $5,614
$4,639
$3,711
$3,711 - $4,491
$3,711

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Customization Options:

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    About the Harvia Legend 300DUO Sauna Stove

    Wood-Burning Stove

    Wood-Burning Stove

    for heating a sauna (see all wood stoves or browse electric heaters instead)

    From Harvia's

    From Harvia's

    Legend series of round barrel-shaped stoves (see other Harvia designs)

    23.5kW Stove

    23.5kW Stove

    for saunas with 529-1059 ft³ adjusted volumeFor Saunas With an Adjusted  Volume of 529-1059 Cubic Feet (ft³)

    "Adjusted volume" is the interior volume of a sauna (i.e. Width  x  Depth  x  Height) plus an adjustment to account for "cold surfaces" in the sauna (i.e. glass, tile, stone, etc. — but not including the floor). This adjustment is typically around +20% but can be more if your sauna has lots of cold surfaces (i.e. multiple large windows).

    This heater is rated for use in saunas with an adjusted volume of 529 - 1059 ft³, which includes most 10+ person saunas (based on average  sauna sizes, layouts & interior cold surfaces). Your sauna may differ. We strongly recommend taking 20 seconds to verify your sauna's adjusted volume to ensure that this 23.5 kW heater has sufficient power to heat your sauna.

    If your sauna's adjusted volume is more or less than this heater's 529-1059 ft³ range, click here to see other kW powers available for this same heater.

    Free-Standing

    Free-Standing

    wood-burning stove sits on the sauna floor (browse all free-standing stoves)

    Required to Run

    Required to Run

    stove requires 572 lbs. of sauna stones and a chimney kit to operate

    Wood-Burning Stove

    Wood-Burning Stove

    for heating a sauna (see all wood stoves or browse electric heaters instead)

    From Harvia's

    From Harvia's

    Legend series of round barrel-shaped stoves (see other Harvia designs)

    23.5kW Stove

    23.5kW Stove

    for saunas with 529-1059 ft³ adjusted volumeFor Saunas With an Adjusted  Volume of 529-1059 Cubic Feet (ft³)

    "Adjusted volume" is the interior volume of a sauna (i.e. Width  x  Depth  x  Height) plus an adjustment to account for "cold surfaces" in the sauna (i.e. glass, tile, stone, etc. — but not including the floor). This adjustment is typically around +20% but can be more if your sauna has lots of cold surfaces (i.e. multiple large windows).

    This heater is rated for use in saunas with an adjusted volume of 529 - 1059 ft³, which includes most 10+ person saunas (based on average  sauna sizes, layouts & interior cold surfaces). Your sauna may differ. We strongly recommend taking 20 seconds to verify your sauna's adjusted volume to ensure that this 23.5 kW heater has sufficient power to heat your sauna.

    If your sauna's adjusted volume is more or less than this heater's 529-1059 ft³ range, click here to see other kW powers available for this same heater.

    Free-Standing

    Free-Standing

    wood-burning stove sits on the sauna floor (browse all free-standing stoves)

    Required to Run

    Required to Run

    stove requires 572 lbs. of sauna stones and a chimney kit to operate

    The Harvia Legend 300 DUO:

    2-in-1 Solution

    doubles as both a sauna stove and as a fireplace in the next room over

    572-Pound Stone Capacity

    a high stone capacity translates to more even & consistent heat

    Authentic Experience

    cozy up to the fire & watch the flames dance as you sweat out impurities

    Extended Firebox

    makes it possible to add firewood from outside the sauna

    Made in Finland

    with only the highest quality stainless steel & other materials

    2-Year Warranty

    when used in a private home sauna (see details)

    2-in-1 Solution

    doubles as both a sauna stove and as a fireplace in the next room over

    572-Pound Stone Capacity

    a high stone capacity translates to more even & consistent heat

    Authentic Experience

    cozy up to the fire & watch the flames dance as you sweat out impurities

    Extended Firebox

    makes it possible to add firewood from outside the sauna

    Made in Finland

    with only the highest quality stainless steel & other materials

    2-Year Warranty

    when used in a private home sauna (see details)

    Additional Information

    Harvia Legend 300 DUO 23.5kW Sauna Wood Burning Stove/Fireplace Combo

    The roaring fire behind the large glass door of the Harvia Legend Duo wood-burning stove creates a fireplace room atmosphere, enabling the stove to be heated from outside the sauna. Relax in the glow of the fireplace while your sauna warms up for pleasurable steam sessions on the other side of the wall.

    The detailed steel frame of the Harvia Legend Duo sauna heater encloses a massive amount of stones, which heat up quickly and create authentic smoke sauna-like moist and soft steam. The Duo stove is easy to keep clean and, unlike a typical wood-burning stove, it doesn't bring ash into the interior of the sauna.

    Harvia Duo stoves enable freer bench solutions and the protective railing sold as an optional accessory makes moving around the sauna safe. Water can be conveniently heated with the Legend water tank, which is available separately and installed on the stove pipe for Duo wood-burning stoves.

    About Harvia Legend Series

    Harvia Legend wood-fired sauna heaters offer a sauna experience like no other. All Legend heaters are handmade in the heart of Finland, the ultimate sauna country. Choose a unique, handmade Legend - that’s where your legendary sauna story begins.

    Please note: requires a minimum of 572 lbs of stones (13 boxes) sold separately.

    For sauna rooms from 529 to 1059 cu. ft

    • Heats two rooms
    • Wood-burning
    • Cleaner and efficient burning
    • 23.5kW
    • For sauna rooms from 529 to 1059 cu. ft.
    • Requires a minimum of 572lbs of stones (13 boxes-AC3020)
      • Please note that each natural stone is unique in shape and size. We recommend purchasing an additional box of sauna stones to allow you to choose the highest quality of stone for fit, form, and function.
    • Black steel frame
    • Floor model
    • Adjustable feet
    • Upper connection opening
    • Rear connection opening
    • Soot opening
    • Designed, engineered, and made in Finland
    • Dimensions: 23.6" W (600mm) x 30.7" D (780mm) x 40.9" H (1040mm)
    Model300 Duo
    Kilowatt Rating23.5 KW
    Primary FuelWood
    Minimum Cubic Feet529 CF
    Maximum Cubic Feet1.059 CF
    Heater Weight214 lbs
    Shipping Weight with Sauna Stones830 lbs
    Width23.6"
    Depth30.7"
    Height40.9"

    Owner's Manual - view / download

    Info Sheet - view / download

    Safety Distances - view / download

    Declaration Performance - view / download

    Stone Requirements - view / download

    Harvia Legend 300 DUO Wood-Burning Sauna Stove & Fireplace (23.5kW)

    Like this heater but need more (or less) kW power?

    You have options! This table lists all of the heaters in the Harvia series and tells you the kW power and sauna size (adjusted volume) for each model.

    Model        Model
    Power        Power
    Adj. VolumeAdjusted Sauna Volume

    This column shows the adjusted sauna volume range for which each sauna heater is rated.

    "Adjusted sauna volume" is the volume (i.e. Width  x  Depth  x  Height) of the interior of the sauna PLUS an adjustment for cold surfaces in the sauna (i.e. glass, tile, stone, etc. — but not including the floor). This adjustment is typically around +20% but can be more (for example, if your sauna has multiple large windows).

    Want to verify your sauna's adjusted volume?  Use this 20-second CALCULATOR to make sure the heater you buy has the correct power (measured in kilowatts, or kW).     Adj. Vol.Adjusted Sauna Volume

    This column shows the adjusted sauna volume range for which each sauna heater is rated.

    "Adjusted sauna volume" is the volume (i.e. Width  x  Depth  x  Height) of the interior of the sauna PLUS an adjustment for cold surfaces in the sauna (i.e. glass, tile, stone, etc. — but not including the floor). This adjustment is typically around +20% but can be more (for example, if your sauna has multiple large windows).

    Want to verify your sauna's adjusted volume?  Use this 20-second CALCULATOR to make sure the heater you buy has the correct power (measured in kilowatts, or kW).
    Sauna SizeMaximum Sauna Size

    This column provides a quick-reference estimate of the maximum sauna capacity (i.e. 3-person sauna, 4-person sauna, etc.) for which each sauna heater is rated.

    Again, this is only an estimate based on average sauna sizes, layouts & interior cold surfaces. Your sauna may differ. We strongly recommend taking 20 seconds to verify your sauna's adjusted volume (which is much more precise) to make sure the heater you buy has enough power (measured in kilowatts, or kW).     Sauna Size
    Price Price
    Legend 150 16.0 kW 212 - 459 ft³ 5-6 people $2,029 View Product → view
    Legend 150 SL 16.0 kW 212 - 459 ft³ 5-6 people $2,129 View Product → view
    Legend 240 SL 21.0 kW 353 - 848 ft³ 9-10 people $2,429 View Product → view
    Legend 240 DUO 21.0 kW 353 - 848 ft³ 9-10 people $2,915 View Product → view
    Legend 300 DUO 23.5 kW 529 - 1,059 ft³ 10+ people $3,711   THIS HEATER this heater

    Not sure how much kW power you need for your sauna?

    Just click this button & we'll tell you →   Calculate kW Needed

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