Harvia Club K12.5G - Club Series 12.5kW Sauna Heater
Staying true to the company's deep Finnish roots, the Harvia 12.5G 12.5-kilowatt sauna heater provides bathers with authentic sauna experiences.
The Harvia K12.5G generates intense, pleasant heat throughout the sauna room. Harvia Club series electric sauna heaters provide years of exceptional performance, safety, and efficiency. Featuring the latest in sauna heater technology, the Harvia K12.5G is perfect for homes, health clubs, hotels, and day spas.
The Harvia K12.5G combines exceptional modern craftsmanship with the age-old tradition of Finnish sauna bathing to deliver a sauna heater without peer.
The Harvia K12.5G electric sauna heater features a large rock capacity that directly contacts the heating elements to ensure a consistent and even flow of heat.
The Harvia K12.5G sauna heating unit required Xenio control for operation is sold separately. Made in Finland of durable, corrosion-resistant stainless-steel components, the Harvia K12.5G electric sauna oven is engineered for years of safe and maintenance-free operation.
The Harvia K12.5G sauna heating unit has a power rating of 12.5 kilowatts. Choose from the 240V, single-phase (K12.5G-U1) or the 208V, three-phase (K12.5G-U3) to best suit your needs. Harvia Club Series heaters are available in a variety of power ratings.
Features & materials
- Floor model
- Deluxe stainless steel interior and exterior
- 12.5kW
- For sauna rooms from 494 to 742 cu. ft.
- Requires a minimum of 132lbs of stones (3 boxes-AC3000)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 (Additional freight charges will apply).
- 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 (Additional freight charges will apply).
- Multi-layer construction for cooler surface temperature and greater safety
- Rocks have direct contact with electric elements to filter harsh heat
- Optional 24-Hour time clock
- UL tested and listed
- ETL certified
- Designed, engineered, and made in Finland
- Dimensions: 19.9"W (505mm) x 16.9"D (429mm) x 27.6"H (701mm)
- Limited 2-year warranty (consumer use) and limited 2-year warranty (commercial use)
- Manufacturer's Note: Sauna heater stones are significant to the unit's safety. In order for the warranty to remain valid, the user is responsible for proper maintenance.
Manuals & documents
Shipping & delivery
Shipping cost: Shipping on this item is free within the contiguous US.
Most in-stock orders ship within 3–5 business days of confirmed payment, and delivery is typically 5–15 business days after shipment. Made-to-order saunas and custom-configured rooms need production time on top of that, which we confirm before the order is released. We ship within the contiguous United States.
Large items ship LTL freight on a pallet, delivered curbside — to the curb or the end of your driveway, often from a trailer up to 53 feet long. Curbside does not include unpacking, assembly, installation or electrical connection. The carrier calls to book an appointment and someone must be there to receive the shipment. Tell us at the time of order if access is limited — narrow or rural roads, steep driveways, gated communities — and ask for liftgate service if you have no dock or forklift.
Inspect the shipment before the driver leaves and before you sign. Count the cartons and pallets against the paperwork, check glass doors and panels, write any damage or shortage on the Delivery Receipt, and photograph it. Email info@plungeintosaunas.com within 48 hours of delivery with your order number, photos and the noted receipt — the same window covers concealed damage and missing items. Keep the packaging while a claim is open.
Cancellations & returns
Cancel before the order has been submitted for fulfillment and it is refunded in full — email info@plungeintosaunas.com with your order number. After that point manufacturer, carrier, return-freight or restocking fees may apply. Every return must be approved by us in writing first: products ship from different manufacturer warehouses, so the correct return address varies, and anything sent back without authorization may be refused.
Return requests are made within 30 days under our general policy; some brands run that window from the date of purchase rather than delivery. Items must be unused, uninstalled, never heated or filled, complete in their original packaging and in resalable condition. Restocking fees run up to 25% depending on the manufacturer, while Harvia, HUUM, SaunaLife, Saunum, Narvi, ThermaSol, Delta, Kohler and Mr. Steam charge no restocking fee at all, only a re-boxing fee of roughly $20–$50 if the original packaging does not come back intact. On a change-of-mind return you pay return shipping and the original outbound shipping is not refunded.
If the item arrived damaged or a manufacturer error is at fault, return shipping is covered for you. Custom, made-to-order and special-order items already in production, clearance and open-box items, heaters that have been wired or fired, tubs and generators that have been filled, assembled or heated rooms, opened consumables and all Canadian Timber Collection products cannot be returned. Ask us before you buy if you are unsure.
Complete your setup
Total for 2 items $3,378.00
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Harvia Club K12.5G -
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- Free shippingOn this item · contiguous US
- Authorized dealerFull manufacturer warranty
- Sized by a specialistRoom, heater and install checked
- Talk to a human(888) 739-3321
Model specifications
The figures that decide the buy. The complete sheet ships with the manual.
- Model
- CLUB K12.5G
- Kilowatt Rating (KW)
- 12.5 kW
- Primary Fuel
- Electric
- Minimum Adjusted Cubic Feet
- 494
- Maximum Adjusted Cubic Feet
- 742
- Voltage
- 240V/208
- Phase
- 1PH/3 PH
- 240V, Single Phase Amperage
- 52.7 Amps (2-CIRCUITS)
- 208V, 3-Phase Amperage
- 34.1 Amps
- Heater Weight
- 60 lbs
- Shipping Weight with Sauna Stones
- 192 lbs
- Width In Inches
- 19-7/8" (505mm)
Manufacturer figures. The complete specification sheet, clearances and wiring details are in the manufacturer's installation manual. See the Manuals tab above.
Heater Size Calculator
At 12.5 kW this heater is rated for sauna rooms of 494 to 742 adjusted cu ft.
A heater that is too small never reaches temperature; one that is too big cycles on and off and gives harsh, dry heat. Match the rated range to your room's adjusted volume — the calculator does the maths in under a minute, or call us with your dimensions.
- 12.5 kW 494742
The shaded bar is the room size this heater is rated for. Work out your room's adjusted cubic feet below, then check the number lands inside the bar.
Working out your adjusted cubic feet
- Room volume — length × width × height in feet.
- Glass and stone add load — count about 4 cu ft extra per square foot of glass, tile or stone wall.
- Uninsulated or log walls — multiply the total by 1.5.
Everything in the box
Exactly what ships with this model, straight from the manufacturer's packing list.
- K12.5G sauna heater
- Installation and operation manual
- 2-Year Limited Warranty (Consumer Use) and 2-Year Limited Warranty (Commercial Use)
Sauna stones, water treatment and accessories are sold separately unless listed above.
Setting up
What happens between checkout and your first session.
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The CLUB K12.5G weighs 60 lbs on its own, and 192 lbs boxed with its sauna stones. Check the carton for damage before you sign, and keep the packaging until the heater is installed and running.

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The CLUB K12.5G runs on a dedicated 240V/208 1PH/3 PH circuit. Final hookup is a licensed electrician's job. Every figure here is on the spec table above and in the installation manual.

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The CLUB K12.5G is rated for rooms of 494 to 742 cubic feet. Start with width × length × height, then adjust upward for glass, tile or stone, which all add load. Our Heater Size Calculator does the adjustment for you, or call us and we'll size it with you before you order.

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Check the What's included list above for exactly what ships in the box. Rinse and stack the stones loosely before the first heat-up, and add a bucket and ladle if you want to throw water.

Not sure your site is ready? Call (888) 739-3321 before you order and we'll walk through it with you.
Talk it through with a sauna specialist
Room size, heater match, electrical, delivery access — a ten-minute call answers most of it. No pressure, no sales script.
Daily, 8 AM to 7 PM Pacific. Or email info@plungeintosaunas.com any time.
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Sizing & fit
We'll check the footprint, ceiling height and heater match for your space. -
Electrical & site
What your electrician needs to know before you order. -
Delivery
Lead time, freight access and what to expect on delivery day.
What happens next
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We check the order
A sauna specialist reviews the configuration, the delivery address and freight access, and usually calls you to confirm it before the order is released to the manufacturer. Anything that needs changing gets changed before it ships.
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Confirmation and lead time
You get an email with the confirmed lead time, the manuals for your unit and what to prepare on site. Tracking follows within 24 hours of it leaving the warehouse.
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Delivery day and after
The freight carrier calls to book a curbside appointment — count the cartons and note any damage on the delivery receipt before you sign. Assembly, electrician and warranty questions after that come to us, and we handle them with the manufacturer on your behalf.
Frequently Asked Questions
Yes! Shop Pay Installments may be available at checkout, allowing you to split your order into installment payments, with interest-free options on eligible orders and monthly plans from 0–36% APR. Just select Shop Pay at checkout to see your options.
Warranty coverage varies by manufacturer and product. Please refer to the product page or included documentation for specific details. Warranties are provided by the manufacturer. We're happy to help connect you with the manufacturer if you have a warranty question.
We ship within the contiguous United States only. We do not currently ship to Alaska, Hawaii, PO boxes, APO/FPO addresses, or international destinations.
No. Standard curbside delivery means the carrier delivers to the curb or end of your driveway only. The driver is not required to bring items into your home, garage, or backyard, and delivery does not include unpacking, assembly, or installation.
Yes. Our store is secured with SSL encryption and all payments are processed through Shopify's secure checkout. We never store your full credit card information.
Exchanges are handled on a case-by-case basis. Contact us at info@plungeintosaunas.com with your order number and the item you'd like instead. If approved, you may be responsible for price differences, return shipping, and any applicable restocking fees.






