Celsium Jonas sauna comparison
The Celsium Jonas Grand 6-Person Outdoor Sauna, the Celsium Jonas Classic 4-Person Outdoor Sauna and the Celsium Jonas Mini 2-Person Outdoor Sauna are the three saunas from Celsium's Jonas line that we carry: outdoor saunas handcrafted in Lithuania by Celsium, each with a ThermoWood® exterior, an aspen interior and a bronze-tinted glass front. The heater is sold separately on all three, and our specialists pair the heater, control and stones with your cabin and your electrical service. This comparison sets the three side by side, from each product page. Sauna Republic is an authorized Celsium dealer.
The three Jonas saunas at a glance
The three differ in length, seating, benches and heater output, and share an 85.0" width and a 98.0" height. Our Celsium sauna buying guide covers all five Celsium saunas we carry, including the two Ula models.
| Product | Seats | Exterior (W × L × H) | Footprint | Minimum foundation (Celsium) | Heater (sold separately) | Weight (Celsium's US listing) | Warranty |
|---|---|---|---|---|---|---|---|
| Celsium Jonas Grand 6-Person Outdoor Sauna | Up to 6 | 85.0" × 109.6" × 98.0" | About 64 sq ft | 86.6" × 110.2" (2.2 × 2.8 m) | At least 11 kW (Celsium's US listing) | Approx. 1,984 lbs (about 900 kg) | 5 years on the structure, 2 years on all other parts |
| Celsium Jonas Classic 4-Person Outdoor Sauna | Up to 4 | 85.0" × 85.0" × 98.0" | About 50 sq ft | 86.6" × 86.6" (2.2 × 2.2 m) | At least 9 kW (Celsium's US listing) | Approx. 1,543 lbs (about 700 kg) | 5 years on the structure, 2 years on all other parts |
| Celsium Jonas Mini 2-Person Outdoor Sauna | Up to 2 | 85.0" × 60.4" × 98.0" | About 36 sq ft | 63.0" × 86.6" (1.6 × 2.2 m) | 4.5 to 6 kW (Celsium's product sheet) | Approx. 1,213 lbs (550 kg) | 5 years on the structure, 2 years on all other parts |
The Jonas Classic and Jonas Mini footprints are calculated from the exterior dimensions. We confirm the shipping weight and pallet details with your quote.
Seating and benches
All three come with Celsium's standard straight-bench layout in aspen. The Jonas Grand and Jonas Classic have two straight benches, an upper and a lower tier. Celsium's drawing for the Jonas Mini shows a full-width upper bench with a shorter lower bench and a footrest beneath it, and its two bathers sit side by side, facing the glass.
| Model | Upper bench | Lower bench | Bench heights |
|---|---|---|---|
| Celsium Jonas Grand 6-Person Outdoor Sauna | 72.2" long, 23.6" deep (1,835 × 600 mm) | 72.2" long, 23.6" deep (1,835 × 600 mm) | Set by Celsium to Finnish sauna standards; not published |
| Celsium Jonas Classic 4-Person Outdoor Sauna | 72.2" long, 22.8" deep (1,835 × 580 mm) | 72.2" long, 20.3" deep (1,835 × 515 mm) | Set by Celsium to Finnish sauna standards; not published |
| Celsium Jonas Mini 2-Person Outdoor Sauna | 71.7" long, 23.6" deep (1,820 × 600 mm), full width | 39.4" × 11.8" (1,000 × 300 mm), plus a 39.4" × 7.9" (1,000 × 200 mm) footrest | Not stated on Celsium's drawings; we confirm them with your quote |
Celsium gives the Jonas Grand's interior as 73.2" W × 97.8" D × 84.3" H (1,860 × 2,485 × 2,140 mm) and the Jonas Mini's as 73.2" W × 48.4" D × 82.7" H (1,860 × 1,230 × 2,100 mm). The Jonas Classic's product page gives no interior dimensions, so we confirm them with your quote.
Footprint, orientation and foundation
On all three, one large bronze-tinted glass panel covers most of the 85" side, and the full-height 8 mm tempered glass door is in the side wall to its left, at the end nearest the glass. What changes is the length from the glass front to the back. Decide which way the glass and the door will face before you set the foundation.
Celsium's photos and renderings are for illustration: some photos show a door on the opposite side, and details such as the glass tint and interior wood may differ from the sauna you receive. The heaters and controls in the images are sold separately.
On all three, Celsium's minimum foundation is a little larger than the cabin's exterior footprint. Have it ready before delivery so the kit can be assembled straight onto it, and ask a local contractor how to build it for your site; our installation directory lists contractors near you. If the sauna will stand on a deck, patio, rooftop or other raised surface, that surface must carry the sauna's weight plus its bathers, and a qualified professional should check it before installation.
Heater and electrical service
None of the three includes a heater: it is sold separately, and our specialists pair the heater, control and stones with your cabin and your electrical service. Each product page gives Celsium's figure:
The first two are minimums; the Jonas Mini's is a recommended range. General sizing rules, such as those in our heater sizing guide, can give a different figure from Celsium's; for these cabins, the Celsium figures on each product page apply.
The heater in this photo is sold separately and is not a recommended pairing; the same applies to every heater and control in Celsium's photos and renderings. Each page also lists these as required for operation and sold separately: a heater control (if not built into the heater), sauna stones sized to the heater, a dedicated electrical circuit installed by a licensed electrician and the solid, level foundation.
The electrical service depends on the heater you choose. Sauna heaters of this size are hardwired on a dedicated circuit, and a licensed electrician should size the breaker and wire to the heater's nameplate rating; our installer and electrician directory lists electricians near you. Requirements for outdoor structures and electrical work vary by location, so check with your local building department before installation; your electrician can advise on permits for the heater circuit.
When you request pricing, we put a heater, control and stones on the quote, sized to the cabin and to your electrical service, or check a heater you already have against the cabin before anything ships. For the heaters themselves, see our Electric Sauna Heaters collection, our electric sauna heater comparison and our guide to how much electricity a sauna heater uses.
Comparing the Jonas models?
Tell us the model and the electrical service available, and we confirm your site, power supply and configuration, then send a delivered price with the heater pairing and financing options.
Get PricingWhat all three share
Apart from size, benches and heater output, the three Jonas models we carry share these features, per their product pages:
Celsium's US listings for the Jonas Grand and Jonas Classic also specify an EPDM rubber roof; for the Jonas Mini, we confirm the roof covering with your quote.
Delivery and assembly
All three ship flat-packed and are delivered securely on pallets, with Celsium's step-by-step installation guidelines. Celsium's product sheets list these flat-pack pallet sizes:
We confirm the shipping weight and pallet details with your quote. Delivery is curbside, and liftgate service can be added so the carrier lowers the pallet to the ground; moving the components from the curb to your site is up to you, so plan for helpers or equipment. Shipping is complimentary to the continental US and included in your quote, and deliveries to Alaska, Hawaii and Puerto Rico are quoted separately; see our Shipping Policy.
Celsium doesn't publish an assembly time. You can assemble the kit with Celsium's guidelines or hire a local contractor, and a licensed electrician connects the heater; installation is arranged locally. Our guide to planning a Celsium outdoor sauna covers the foundation, delivery, assembly and the heater circuit in more depth.
How to choose between them
Choose by bathers first, then by space, then by the heater circuit.
If up to two people will use the sauna and the Jonas Mini's 85.0" × 60.4" footprint doesn't suit your site, our Ula Mini vs Ula Micro Compact comparison covers the two Ula models we carry, at 49" × 81" and 49.2" × 53.1".
Frequently asked questions
How many people does each Jonas model seat?
The Celsium Jonas Grand seats up to six and the Jonas Classic up to four, each on two straight aspen benches set as an upper and a lower tier. The Jonas Mini seats up to two, side by side on its full-width upper bench, facing the glass.
How much space does each Jonas model need?
All three are 85.0" wide and 98.0" tall; the Jonas Grand is 109.6" long, the Jonas Classic 85.0" and the Jonas Mini 60.4". Celsium specifies a solid, level base of at least 86.6" × 110.2" for the Jonas Grand, 86.6" × 86.6" for the Jonas Classic and 63.0" × 86.6" for the Jonas Mini. Have it ready before delivery.
Which side is the door on?
On all three Jonas models, the full-height 8 mm tempered glass door is on the left-hand side: facing the glass front, it's in the side wall on your left, at the end nearest the glass. On the Jonas Grand, that is the left-hand long side, and the door opens outward; on the Jonas Mini, it is the left-hand 60.4" side wall. Some photos show a door on the opposite side; images are for illustration purposes only.
Is a heater included, and what output does each model need?
No. The heater is sold separately, and our specialists pair the heater, control and stones with your cabin and your electrical service. Celsium's US listings call for a heater of at least 11 kW for the Jonas Grand and at least 9 kW for the Jonas Classic; Celsium's product sheet recommends 4.5 to 6 kW of heater output for the Jonas Mini.
What electrical service does each Jonas model need?
That depends on the heater you choose. Sauna heaters of this size are hardwired on a dedicated circuit, and a licensed electrician should size the breaker and wire to the heater's nameplate rating. You can find one through our installer and electrician directory.
What warranty comes with the three Jonas models?
Celsium covers the structure of the Jonas Grand, Jonas Classic and Jonas Mini for 5 years and all other parts for 2 years. As an authorized Celsium dealer, we handle warranty support with you directly.
Get pricing on a Celsium Jonas sauna
Tell us the model, the exterior color and where it will stand, and we confirm your site, power supply and configuration, then send a delivered price with the heater pairing.
Request pricingBrowse the five Celsium saunas we carry in Celsium Saunas, or compare other brands in Outdoor Saunas and Traditional Saunas.
Celsium and ThermoWood® are trademarks of their respective owners. Sauna Republic is an authorized Celsium dealer. This article is for educational purposes and is not medical advice. If you are pregnant, managing a heart, blood-pressure or circulation condition, or taking medication, consult a healthcare professional before using a sauna.
