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Description
The Harvia Pro 20 SL is a 24.1 kW wood-burning sauna stove with an exterior feed. The stove sits in the sauna and the firebox opens through the wall into an adjoining room, so you load wood from outside the sauna and get the look of a glass-door fireplace on the loading side.
Through-wall loading
Loading from the next room keeps ash and wood debris out of the sauna. The glass door faces the loading room, so a changing room or lounge gets the view of the fire. The door direction can be changed to suit your layout.
Choosing an output
At 24.1 kW it heats sauna rooms from 283 to 706 cubic feet. Check your room volume before ordering.
Stones
The stove needs a minimum of 88 lb of sauna stones. The manufacturer listing states stones are sold separately.
Specifications
- Model: WKPR20SLM
- Output: 24.1 kW
- Room volume: 283 to 706 cubic feet
- Loading: exterior feed from an adjoining room
- Door: glass, direction adjustable
- Flue connection: rear or upper
- Maintenance: soot opening
- Stones: 88 lb minimum, sold separately
Related
Browse sauna heaters, or use our sauna size calculator to work out your room volume before choosing an output.
Specifications
| Model | WKPR20SLM |
|---|---|
| Output | 24.1 kW |
| Room volume | 283 to 706 cubic feet |
| Loading | exterior feed from an adjoining room |
| Door | glass, direction adjustable |
| Flue connection | rear or upper |
| Maintenance | soot opening |
| Stones | 88 lb minimum, sold separately |
Specifications from the manufacturer. Dimensions are approximate.
Shipping
We ship to the 48 contiguous U.S. states and Washington, DC. Your shipping cost is calculated at checkout and shown before you pay.
You will get an order confirmation right away and tracking by email when your order ships. Questions about timing for a specific item? Call (945) 280-3243 or email support@restoresuite.com before you order.
Delivery
Large items such as saunas, hot tubs and cold plunge tubs usually ship by freight. The carrier contacts you to schedule delivery. Please check the packaging and note any damage on the delivery receipt before you sign, then tell us within 48 hours so we can resolve it for you.
Before delivery day, measure doorways and hallways along the path to the install spot, and confirm the electrical requirement on the Specifications tab.
Warranty
30-day limited warranty against manufacturing defects
If this item has a manufacturing defect within 30 days of purchase, contact us with your order number and a photo or video of the issue and we will make it right.
Reviews
What delivery looks like
See it in detail
Manuals and documents
Official Harvia documents for this model. Opens as a PDF.
Why this heater
A 24.1 kW Harvia wood sauna stove you load through the wall from the next room, for saunas of 283 to 706 cubic feet.
- Loads from the adjoining room, keeping debris out of the sauna.
- 24.1 kW for 283 to 706 cubic feet.
- Glass door with adjustable opening direction.
- Rear or upper flue connection.
Key specs at a glance
The numbers to check before you order. Full details are on the Specifications tab.
Before you buy: what to know
Based on the manufacturer's specs, manuals and our research.
- The Pro 20 SL is 24.1 kW and loads through the wall from an adjoining room, which gets the glass-door fireplace view. It heats rooms from 283 to 706 cu ft.
- Stones are sold separately and it needs at least 88 lb, so order them at the same time to avoid waiting on a second delivery before the first fire.
- The door direction is adjustable and the flue connects at the rear or top, which helps when you plan the wall opening and chimney.
- Clearances to walls, ceiling and benches come from the installation manual, and a wood stove also needs a proper chimney run. Check local code and your insurer before you build around it.
- It usually ships within 1 to 3 business days and arrives in about 5 to 10 business days, so it can be on site before your build is finished.
Not sure this is the right fit? Ask us or call (945) 280-3243.
Compare Harvia models
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Common questions
How does through-wall loading work?
What size sauna does it heat?
Are stones included?
Can the door direction be changed?
Choosing the right setup can be tricky. We are here to help.
Tell us your space, power and how you plan to use it, and we will help you compare models honestly, including whether this one is the right fit.
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Honest guidance
Free guides and calculators for sizing, running costs and safety, so you can decide with real numbers. See the research
