Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove vs Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW

The Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove costs $1,765 and the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW costs $1,790. This comparison covers the full spec sheets of both, the deciding difference between them, and which buyer each one fits.

Prices verified August 2026

How we vet

Affiliate disclosure

Our verdict

The choice between the Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove ($1,765) and the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW ($1,790) comes down to model. The Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove offers model of WP500, while the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW offers Cozy 12 Thru-Wall. The Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove saves you $25; pay the difference for the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW only if that gap buys a spec you will use.

Prices verified August 2026.

How we vet

Which one is right for you?

It depends on your situation.

Choose the Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove if

Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove: You want model of WP500. The Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove also costs $25 less than the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW.

Choose the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW if

Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW: You want model of Cozy 12 Thru-Wall.

Full specs comparison

Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove vs Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW full spec comparison
SpecHarvia Cauldron 50L WP500 Wood-Burning Sauna StoveCozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW
Price$1,765$1,790
Type··
Heat Type··
Temp Range··
Heat-Up Time··
Capacity··
Dimensions··
Weight80 lbs126 lbs
EMF Level··
Power·12kW
Warranty··

Pros and cons

Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove

Pros

    Cons

      Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW

      Pros

        Cons

          Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove vs Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW: common questions

          How much more does the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW cost than the Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove?

          The Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW costs $1,790, which is $25 more than the $1,765 Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove. Beyond price, the main spec difference is model: the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW offers model of Cozy 12 Thru-Wall, the Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove offers model of WP500.

          Is the Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove worth it over the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW?

          It depends on the spec you need, and we do not name one of these two better than the other. The Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove offers model of WP500, while the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW offers Cozy 12 Thru-Wall. The Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove costs $1,765 and the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW costs $1,790, a difference of $25.

          What is the main difference between the Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove and the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW?

          The Harvia Cauldron 50L WP500 Wood-Burning Sauna Stove offers model of WP500; the Cozy Heat Thru-Wall Sauna Heater Wood-Burning Sauna Stove, Up to 18kW offers model of Cozy 12 Thru-Wall. That is the deciding spec difference between the two.

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