- America-made since 1964 – the only gas sauna heater manufacturer in the U.S.
- Commercial-grade performance trusted by spas, gyms, and installers worldwide
- Efficient and low-maintenance – no heating elements to replace, with energy-efficient gas operation
- Durable build quality with solid tray and robust controls designed for long service life
- 40,000 BTU natural-gas heater for sauna rooms up to 616 cu ft
- Sealed combustion; vents outdoors via direct (horizontal) or vertical configuration
- Mechanical “G” wall control included (60-minute timer; 24-hour commercial timer optional)
- All-stainless construction with oversized rock tray for traditional steam splashes
Scandia 40K BTU Gas Sauna Heater - Natural Gas
Regular price
$3,800.00
Order Now to Receive it By: September 21, 2026
⭐️⭐️⭐️⭐️⭐️ “Absolutely flawless! From the craftsmanship to the support team, everything exceeded my expectations" - Michael R., California
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Before you buy
- Electrical
- Combustion-fired. No electrical supply needed, but it does need a flue and the manufacturer's clearances to combustible surfaces.
- Delivery
- Free to the lower 48, no minimum, and it stops at the curb. Getting it inside is a $600 white-glove upgrade. Getting it inside, unboxed and fully assembled is $1,800, which is the whole price for the whole job with no separate assembly bill. Electrical work is not included in either, because the wiring has to meet your local code and pass local inspection.
Description
The Scandia 40,000 BTU Natural Gas sauna heater delivers sealed-combustion performance and fast, even heat for rooms up to 616 cu ft. Built in the USA with a #304 stainless exterior and #321 stainless internal chamber, this floor-mounted unit provides the classic feel of a large rock tray while keeping combustion air and flue gases outside the sauna room for cleaner operation.
Choose the venting that fits your layout: horizontal/direct vent (Model 240) with a flue cap or vertical vent (Model 245) with a draft hood. Control is straightforward via the included mechanical “G” wall control with a 60-minute timer; a 24-hour timer is available for commercial applications. Typical performance in a properly built 7-ft-ceiling room reaches ~170–185°F in about 30–60 minutes, then cycles to maintain temperature.
Installation is supported with a galvanized through-wall back panel, stainless internal wall flashing, and the appropriate vent termination (cap or hood). Gas supply is regulated to typical 3.5" W.C. natural-gas pressure (acceptable supply 1/8–1/2 psi with proper regulation). The compact chassis—18.5" W x 21" D x 28" H—fits neatly beneath benching while preserving strong stone mass for stable, enveloping heat.
Key build details include an all-stainless construction, sealed-combustion architecture, high-density stones (included), and clear guidance on thermostat probe placement and guard rail requirements for safe operation. Whether specified for residential or light-commercial projects, the 40K NG combines gas efficiency with the soft löyly enthusiasts expect from a traditional rock-bed heater.
Backed by Scandia’s limited residential warranty, the 40K BTU Natural Gas model is a solid, specification-driven choice for builders and homeowners who want reliable performance, flexible venting, and simple, familiar controls—without electric elements.
Key Features
Dimensions & Specifications
Manuals & Guides
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Why Choose Scandia Manufacturing?
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