Pro 26
Included with purchase
Sauna stove, adjustable legs, stove door, ash box, installation and operation manual.
Required separately
110 lb of split-face sauna stones (quantity 3 × 44 lb of 4 to 6 in stones).
Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is 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 built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Open the 3D planner.
Sauna stove, adjustable legs, stove door, ash box, installation and operation manual.
110 lb of split-face sauna stones (quantity 3 × 44 lb of 4 to 6 in stones).
Sauna stove, installation and operation manual.
88 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Sauna stove, installation and operation manual.
88 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Wood-burning heater, adjustable legs, stove door, ash box, installation and operation manual.
132 lb of split-face sauna stones (quantity 3 × 44 lb of 4 to 6 in stones).
Sauna stove, stove door, ash box, adjustable legs, installation and operation manual.
88 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Sauna stove, stove door, ash box, installation and operation manual.
88 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Contents vary by configuration. Check the row for the option selected above.
| Heat Source | Wood-burning |
|---|---|
| Sauna Room Size | Pro 20: 283 to 706 cu ft · Pro 26: 353 to 918 cu ft · Pro 36: 494 to 1,271 cu ft |
| Sauna Ceiling Height | At least 82.3 in floor to ceiling; at least 81.1 in for the Pro 36 |
| Power | 24.1, 26.6 and 31 kW |
| Mounting | Floor-standing |
| Loading | Inside the sauna or Through the wall, from the next room |
| Stones | 88 to 132 lb, by size |
| Warranty | 2 years home use |
| Made in | Finland |
| Brand | Harvia |
|---|---|
| Catalog Product | Harvia Pro Series |
| Heater Type | Wood-burning sauna stove |
| Model Number | 26.6 kW: PRO 26; 24.1 kW: PRO 20 ES; 24.1 kW: PRO 20 RS; 31 kW: PRO 36; 24.1 kW: PRO 20; 24.1 kW: PRO 20 SL |
| SKU / Part Number | 26.6 kW: WKPR26M; 24.1 kW: WKPR20ESM; 24.1 kW: WKPR20RSM; 31 kW: WKPR36M; 24.1 kW: WKPR20M; 24.1 kW: WKPR20SLM |
| Rated Power | 26.6 kW: 26.6 kW; 24.1 kW: 24.1 kW; 31 kW: 31 kW |
|---|
| Depth | 26.6 kW, 24.1 kW, 31 kW: 20"; 24.1 kW: 25.6"; 24.1 kW: 20.1"; 24.1 kW: 28.7" |
|---|---|
| Minimum Host-Room Height | 26.6 kW: 82.28 in; 24.1 kW, 31 kW: 81.1 in |
| Product Weight | 26.6 kW: 143.3lbs; 24.1 kW: 143.3 lbs; 24.1 kW: 132.3 lbs; 31 kW: 154.3 lbs; 24.1 kW: 116.8 lbs; 24.1 kW: 137.8 lbs |
| Stone Capacity | 26.6 kW: 110 lbs; 24.1 kW: 88 lbs; 31 kW: 132 lbs |
|---|
| Ceiling-Clearance Reference Height Above Finished Floor | 26.6 kW, 31 kW: 31.89 in; 24.1 kW: 29.92 in |
|---|---|
| Ceiling-Clearance Reference Plane | Stove Top |
| Minimum Ceiling Clearance Above Reference Plane | 26.6 kW: 50.39 in; 24.1 kW: 51.18 in; 31 kW: 49.21 in |
| Wall Opening, Minimum | Pro 20 SL: 8.7 in wide x 15.4 in tall from the floor. |
|---|---|
| Wall Thickness, Maximum | 5.9 in; concrete or brick. |
| Non-Combustible Wall Around the Opening, Minimum | 24.1 in beside the opening and 56.3 in overall width (current Harvia Pro Duo and SL manual, Figure 11). |
| Which Pro Is Through-Wall | Only the Pro 20 SL is fed from the next room. The Pro 20 LS is the version with a 30 L water tank on the left side and is loaded from inside the sauna. |
| Steel Chimney Note | With a Harvia steel chimney the non-flammable wall through which the stove is installed must extend up to the roof (thin non-combustible partitions such as the Harvia Duo glass wall excepted). |
| Included Components | 26.6 kW: Sauna Stove, Adjustable Legs, Stove Door, Ash Box, Installation and Operation Manual; 24.1 kW: Sauna Stove, Installation and Operation Manual; 31 kW: Wood-Burning Heater, Adjustable Legs, Stove Door, Ash Box, Installation and Operation Manual; 24.1 kW: Sauna Stove, Stove Door, Ash Box, Adjustable Legs, Installation and Operation Manual and 6-Month Limited Warranty (Commercial Use); 24.1 kW: Sauna Stove, Stove Door, Ash Box, Installation and Operation Manual |
|---|---|
| Required, Not Included | 26.6 kW: 110 lbs of Split-Face Sauna Stones (Qty 3 x 44 lbs of 4 to 6 in stones); 24.1 kW: 88 lbs of Split-Face Sauna Stones (Qty 2 x 44 lbs of 4 to 6 in stones); 31 kW: 132 lbs of Split-Face Sauna Stones (Qty 3 x 44 lbs of 4 to 6 in stones) |
| Certifications & Listings | CE, EAC |
|---|
| Residential Warranty | Warranty |
|---|
Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.
A wood-burning sauna heater that heats the room and stone mass for traditional löyly. Treat the stove, chimney, floor protection, clearances, combustion air, ventilation, and stones as one installation system.
Complete the system with these items.
Optional upgrades and accessories.
Current Harvia Pro and Linear family manual. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact current Pro 20 ES, LS and RS manual recovered from the matching current US source. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR20M data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR20ESM data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR20RSM data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR26M data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR36M data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact Pro 20 SL technical data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
The Harvia Pro Series is the value line for medium saunas. While most default to the popular Harvia M3, the Pro line is larger and has options like built in water tanks (ES), through-wall feed (SL), and designed for easy maintenance and cleaning. The Pro Series can also be paired with an in-chimney water heater, and has great short clearances when paired with the surround and floor protector. The Harvia Pro Series has fewer stones so it heats faster than rock basket heaters, but will not provide as ‘soft’ of a heat as something like a Harvia Legend.
The Harvia Pro comes in three sizes (20, 26, 36) for small and medium saunas.
Pro 20 SL wall opening: at least 8.7 in wide x 15.4 in tall from the floor, in a concrete or brick wall no more than 5.9 in thick. The Pro 20 LS is the left-side water-tank model, not the through-wall one.
$1,559.00 – $2,364.00Price range: $1,559.00 through $2,364.00
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Unlimited access to tech support from SaunaMarketplace.com and Harvia.
This order is fulfilled through our US distribution network. That means you have full access to their top-notch customer service and tech support, as well as SaunaMarketplace.com and Harvia support. We're with you and your contractors until it's operating as it should, no matter what.
Before your order ships, we provide contact information and reference numbers for each.
Harvia Pro Stoves are built with safety in mind. These manuals and documents will help ensure a safe, great performing heater for years to come.
As a leader in sauna stove innovation for over 70 years, Harvia understands that nothing beats the warmth and ambiance of a traditional wood-burning heater.
The Pro series delivers that classic sauna experience with fast-heating efficiency and user-friendly design. While the pro line is a budget choice, these stoves don't cut corners on quality or performance.
The stainless steel body with stylish black painted sides gives a modern yet rustic look that fits nicely into any home or cottage sauna. The glow of the fire sets the mood in a traditional sauna, and it glows brightly through the glass here.
The firebox is thoughtfully designed for easy loading and we've found the adjustable legs allow you to get the stability you need on any sauna floor. We recommend going down to the subfloor with the legs to get the rocks as low in the room as possible.
That makes for the best heat distribution.
The rocks are on the lighter side, but that means these stoves can heat a space super fast. The separate air intake and exhaust controls allow you to dial in your preferred temperature.
Have a vent high on the wall, because this heater can make the room too hot quickly.
If you're considering an integrated water tank in your heater the Pro Line has you covered.
Having a water tank in the chimney is not safe or optimal as it actually heats the upper half of the room instead of keeping that heat lower.
While it doesn't burn as clean or efficiently as Harvia's premium Greenflame models, or their iconic Legend series known for softer heat, the Pro line does hit that sweet spot of quality and value.
So if you're in the market to bring an authentic, affordable sauna heater into your sauna project, you can't go wrong with these Finnish-made workhorses.
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Write a reviewWhat customers say about working with our team, word for word. Names are shortened to a first name and last initial, or to initials.
★★★★★“Great service - easy delivery!”
★★★★★“Efficient, easy to use, and provided great customer service.”
★★★★★“Your service is very high and I commend you on that.”
★★★★★“Great service - easy delivery!”
★★★★★“Efficient, easy to use, and provided great customer service.”
★★★★★“Your service is very high and I commend you on that.”
★★★★★“Great service - easy delivery!”
★★★★★“Efficient, easy to use, and provided great customer service.”
★★★★★“Your service is very high and I commend you on that.”
★★★★★“Great service - easy delivery!”
★★★★★“Efficient, easy to use, and provided great customer service.”
★★★★★“Your service is very high and I commend you on that.”
★★★★★“Great service - easy delivery!”
★★★★★“Efficient, easy to use, and provided great customer service.”
★★★★★“Your service is very high and I commend you on that.”
★★★★★“Great service - easy delivery!”
★★★★★“Efficient, easy to use, and provided great customer service.”
★★★★★“Your service is very high and I commend you on that.”
Planning guides: Sauna heater calculator · Wood sauna stove guide
Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is 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 built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Open the 3D planner.
Sauna stove, adjustable legs, stove door, ash box, installation and operation manual.
110 lb of split-face sauna stones (quantity 3 × 44 lb of 4 to 6 in stones).
Sauna stove, installation and operation manual.
88 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Sauna stove, installation and operation manual.
88 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Wood-burning heater, adjustable legs, stove door, ash box, installation and operation manual.
132 lb of split-face sauna stones (quantity 3 × 44 lb of 4 to 6 in stones).
Sauna stove, stove door, ash box, adjustable legs, installation and operation manual.
88 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Sauna stove, stove door, ash box, installation and operation manual.
88 lb of split-face sauna stones (quantity 2 × 44 lb of 4 to 6 in stones).
Contents vary by configuration. Check the row for the option selected above.
| Heat Source | Wood-burning |
|---|---|
| Sauna Room Size | Pro 20: 283 to 706 cu ft · Pro 26: 353 to 918 cu ft · Pro 36: 494 to 1,271 cu ft |
| Sauna Ceiling Height | At least 82.3 in floor to ceiling; at least 81.1 in for the Pro 36 |
| Power | 24.1, 26.6 and 31 kW |
| Mounting | Floor-standing |
| Loading | Inside the sauna or Through the wall, from the next room |
| Stones | 88 to 132 lb, by size |
| Warranty | 2 years home use |
| Made in | Finland |
| Brand | Harvia |
|---|---|
| Catalog Product | Harvia Pro Series |
| Heater Type | Wood-burning sauna stove |
| Model Number | 26.6 kW: PRO 26; 24.1 kW: PRO 20 ES; 24.1 kW: PRO 20 RS; 31 kW: PRO 36; 24.1 kW: PRO 20; 24.1 kW: PRO 20 SL |
| SKU / Part Number | 26.6 kW: WKPR26M; 24.1 kW: WKPR20ESM; 24.1 kW: WKPR20RSM; 31 kW: WKPR36M; 24.1 kW: WKPR20M; 24.1 kW: WKPR20SLM |
| Rated Power | 26.6 kW: 26.6 kW; 24.1 kW: 24.1 kW; 31 kW: 31 kW |
|---|
| Depth | 26.6 kW, 24.1 kW, 31 kW: 20"; 24.1 kW: 25.6"; 24.1 kW: 20.1"; 24.1 kW: 28.7" |
|---|---|
| Minimum Host-Room Height | 26.6 kW: 82.28 in; 24.1 kW, 31 kW: 81.1 in |
| Product Weight | 26.6 kW: 143.3lbs; 24.1 kW: 143.3 lbs; 24.1 kW: 132.3 lbs; 31 kW: 154.3 lbs; 24.1 kW: 116.8 lbs; 24.1 kW: 137.8 lbs |
| Stone Capacity | 26.6 kW: 110 lbs; 24.1 kW: 88 lbs; 31 kW: 132 lbs |
|---|
| Ceiling-Clearance Reference Height Above Finished Floor | 26.6 kW, 31 kW: 31.89 in; 24.1 kW: 29.92 in |
|---|---|
| Ceiling-Clearance Reference Plane | Stove Top |
| Minimum Ceiling Clearance Above Reference Plane | 26.6 kW: 50.39 in; 24.1 kW: 51.18 in; 31 kW: 49.21 in |
| Wall Opening, Minimum | Pro 20 SL: 8.7 in wide x 15.4 in tall from the floor. |
|---|---|
| Wall Thickness, Maximum | 5.9 in; concrete or brick. |
| Non-Combustible Wall Around the Opening, Minimum | 24.1 in beside the opening and 56.3 in overall width (current Harvia Pro Duo and SL manual, Figure 11). |
| Which Pro Is Through-Wall | Only the Pro 20 SL is fed from the next room. The Pro 20 LS is the version with a 30 L water tank on the left side and is loaded from inside the sauna. |
| Steel Chimney Note | With a Harvia steel chimney the non-flammable wall through which the stove is installed must extend up to the roof (thin non-combustible partitions such as the Harvia Duo glass wall excepted). |
| Included Components | 26.6 kW: Sauna Stove, Adjustable Legs, Stove Door, Ash Box, Installation and Operation Manual; 24.1 kW: Sauna Stove, Installation and Operation Manual; 31 kW: Wood-Burning Heater, Adjustable Legs, Stove Door, Ash Box, Installation and Operation Manual; 24.1 kW: Sauna Stove, Stove Door, Ash Box, Adjustable Legs, Installation and Operation Manual and 6-Month Limited Warranty (Commercial Use); 24.1 kW: Sauna Stove, Stove Door, Ash Box, Installation and Operation Manual |
|---|---|
| Required, Not Included | 26.6 kW: 110 lbs of Split-Face Sauna Stones (Qty 3 x 44 lbs of 4 to 6 in stones); 24.1 kW: 88 lbs of Split-Face Sauna Stones (Qty 2 x 44 lbs of 4 to 6 in stones); 31 kW: 132 lbs of Split-Face Sauna Stones (Qty 3 x 44 lbs of 4 to 6 in stones) |
| Certifications & Listings | CE, EAC |
|---|
| Residential Warranty | Warranty |
|---|
Use the attached current manual and a qualified installer for final sizing, wiring, clearances, venting, and local-code compliance.
A wood-burning sauna heater that heats the room and stone mass for traditional löyly. Treat the stove, chimney, floor protection, clearances, combustion air, ventilation, and stones as one installation system.
Complete the system with these items.
Optional upgrades and accessories.
Current Harvia Pro and Linear family manual. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact current Pro 20 ES, LS and RS manual recovered from the matching current US source. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR20M data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR20ESM data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR20RSM data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR26M data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact WKPR36M data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Exact Pro 20 SL technical data sheet. Exact source bytes and model scope verified by Sauna Marketplace on 2026-08-21.
Heaters rated for the same rooms as the Harvia Pro, side by side. Rows that differ are marked in orange.
Swipe the table to see all 4 →
| Heater | This heaterHarvia Pro | Narvi NCSized for smaller rooms | Narvi KuruCosts $550 less | Harvia M3Costs $600 less |
|---|---|---|---|---|
| Price | From $1,788 | From $1,750 | From $1,255 | From $1,198 |
| Price includes | With the stones and the 6 in pipe adapter | With stones | With stones | With the stones and the 6 in pipe adapter |
| Rated for rooms of | 283 to 1,271 cu ft | 283 to 848 cu ft | 283 to 706 cu ft | 212 to 459 cu ft |
| Power | 24.1, 26.6, 31 kW | 16, 17 kW | 13, 16 kW | 16.5 kW |
| Power supply | No circuit needed | No circuit needed | No circuit needed | No circuit needed |
| Start from a phone | No | No | No | No |
| Mounting | Floor | Floor | Floor | Floor |
| Loading the fire | Inside the sauna or From the next room | Inside the sauna | Inside the sauna | Inside the sauna |
| Stones | 88 to 132 lb | 110 to 176 lb | 77 to 88 lb | 66 lb |
| Ceiling height | At least 6 ft 9 in | – | – | At least 6 ft 7 in |
| Warranty | 2 years | 2 years | 2 years | 2 years |
| Made in | Finland | Finland | Finland | Finland |
| Open | See the Narvi NC | See the Narvi Kuru | See the Harvia M3 |
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