Cozy Heat Sw Thru-Wall 12 And 18 Stove Package Models On Black Wood Cladding.
Cozy Heat Sw Thru-Wall 12 And 18 Package Options Shown Together.
Cozy Heat Sw Thru-Wall 12 Sauna Stove Package With Split-Face Stones
Cozy Heat Sw Thru-Wall 12 Sauna Stove Package With Rounded Stones
Cozy Heat Sw Thru-Wall 18 Sauna Stove Package With Split-Face Stones
Cozy Heat Sw Thru-Wall 18 Sauna Stove Package With Rounded Stones
Click to enlarge
Expert help that stays with you

Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

Specs
Package12 kW + Split-Face Stones, 12 kW + Rounded Stones, 18 kW + Split-Face Stones, 18 kW + Rounded Stones
Attachments
Gallery
Cozy Heat Sw Thru-Wall 12 And 18 Stove Package Models On Black Wood Cladding.
Cozy Heat Sw Thru-Wall 12 And 18 Package Options Shown Together.
Cozy Heat Sw Thru-Wall 12 Sauna Stove Package With Split-Face Stones
Cozy Heat Sw Thru-Wall 12 Sauna Stove Package With Rounded Stones
Cozy Heat Sw Thru-Wall 18 Sauna Stove Package With Split-Face Stones
Cozy Heat Sw Thru-Wall 18 Sauna Stove Package With Rounded Stones
Click to enlarge

    Cozy Heat SW Thru-Wall Sauna Stove Package with Stones

    This is the big-stone, outside-loading package. This Cozy Heat SW Thru-Wall package pairs the exact 12 or 18 kW stove with the current box count of split-face or rounded olivine diabase stones.
    The two heater sizes cover 212–424 and 318–636 cu ft, and the fire is loaded from the adjoining room.
    Each option names the stone style and boxes included. The chimney system and any required floor or wall protection remain separate, so use the drawings below to finish the plan before ordering.

    Build Your Quote:

    Starting at Price range: $2,686.50 through $3,424.50

    Share your selected heater size and add-ons. Prices and availability are confirmed when the link is opened.

    We added you to this product's waitlist and we'll send you an email when the product is available.

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    Zero Interest Payments:

    Buy Now, Pay Later with premium financing packages only available on Sauna Marketplace.

    Pay with HSA/FSA:

    We teamed up with FLEX to make HSA/FSA payments easier than ever.

    Cozy Heat

    This is the big-stone, outside-loading package. The SW Thru-Wall combines Cozy's tall wave-pattern guard with an extended firebox. You see and water the broad stone field inside while the fire is tended from the adjoining room.

    Choose the stove first, then the stone finish

    Every option pairs the exact Cozy Heat SW Thru-Wall heater with the package’s current stone-box count. Split-face stones give the cage a rougher, more architectural texture. Rounded stones make the visible field feel softer. Both choices are olivine diabase; the difference shown here is shape and appearance, not a promise that one produces better steam.

    Package option Stone boxes Manufacturer stone mass
    12 kW + split-face stones 4 boxes 265 lb required by the current model drawing
    12 kW + rounded stones 4 boxes 265 lb required by the current model drawing
    18 kW + split-face stones 5 boxes 397 lb required by the current model drawing
    18 kW + rounded stones 5 boxes 397 lb required by the current model drawing

    The table separates the package box count from the heater’s technical stone load. Stone size and packing change the final weight inside the cage, so follow the exact manual and keep the stove body covered without blocking airflow.

    Room size and loading side still come first

    Choose 12 kW for an adjusted 212–424 cu ft room or 18 kW for 318–636 cu ft. Add about 4 cu ft for every square foot of glass, tile, brick, concrete, or other uninsulated surface; multiply a massive-log room by 1.5. The firebox passes through a properly built noncombustible wall opening, so wood and ash can stay in the adjoining room.

    What this package does not finish

    • Chimney system and roof or wall pass-through components
    • Floor and wall protection required by the exact installation
    • Local solid-fuel approval and installer review

    The current manual, exact 12 and 18 drawings, and 24-month limited warranty are in Manuals & Documents. Use them before the room is closed up.

    Want us to check the room volume and loading side with you? Call or text (844) 565-1113 before choosing the package option.

    Expert help that stays with you

    Whether you’re choosing one component or planning the whole room, small details can become expensive problems once installation begins. We know the products we sell and the questions to ask early, helping catch mismatched components, overlooked requirements, and installation issues while they are still easy to fix.

    Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

    We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

    Sauna and heater customers also receive free shipping on sauna accessories for life.

    Planning a sauna, or need help with one you purchased from us? Our founders have assembled many of the saunas we sell, visited the manufacturers, and use these products every day. New customers and existing Sauna Marketplace sauna and heater owners can Book a Ben consultation.

    Specs
    Package12 kW + Split-Face Stones, 12 kW + Rounded Stones, 18 kW + Split-Face Stones, 18 kW + Rounded Stones
    Attachments
    Gallery
    Cozy Heat Sw Thru-Wall 12 And 18 Stove Package Models On Black Wood Cladding.
    Cozy Heat Sw Thru-Wall 12 And 18 Package Options Shown Together.
    Cozy Heat Sw Thru-Wall 12 Sauna Stove Package With Split-Face Stones
    Cozy Heat Sw Thru-Wall 12 Sauna Stove Package With Rounded Stones
    Cozy Heat Sw Thru-Wall 18 Sauna Stove Package With Split-Face Stones
    Cozy Heat Sw Thru-Wall 18 Sauna Stove Package With Rounded Stones
    Click to enlarge

      PLAN THE WHOLE SAUNA

      The room and heater still have to work as one system.

      Start with the room dimensions, then account for glass, masonry, insulation, ceiling height, required clearances, and available electrical service. That is how we move from a product that looks right to a sauna that heats evenly and comfortably.

      Compare sauna heaters

      See electric sauna heaters by output, stone mass, control style, and installation type. Size from adjusted room volume, not floor dimensions alone.

      Shop sauna heaters

      Shop complete saunas

      Explore indoor and outdoor saunas when you are planning beyond one component. Starting with the room makes heater size, controls, and accessories easier to get right.

      Explore complete saunas