A wood fired hot tub is a simple, off-grid way to soak in hot water: you fill it, light a fire in an integrated stove or an external firebox, and wait a couple of hours while the water warms by convection. No electrical heater, no monthly energy bill for the heat itself — just wood, water, and time. If you want that experience, this guide covers every decision you need to make: tub material, heater placement, realistic costs, safety rules, and the brands that have verified published prices.
How a Wood Fired Hot Tub Actually Works
The heating principle is convection. Cold water sinks toward the stove, heats up, rises, and circulates naturally — no pump required on a well-designed tub. Most tubs reach a comfortable soaking temperature in one to three hours, depending on the starting water temperature, the volume of the tub, and how hard the fire burns.
Two stove configurations exist:
- Internal stove — the firebox sits inside the tub. Heating is fast, but the stove takes up bathing space and the fire must be out before you get in safely.
- External stove — the firebox is mounted outside the tub wall with inlet and outlet pipes. You can add wood and stoke the fire while soaking, and there is more room inside.
Some models, like the Dundalk LeisureCraft lineup sold through Sauna Kit Co and Universe of Comfort, offer either configuration depending on the model you choose.
Wood Fired vs. Electric: Which Is Right for You?
Before you commit to wood fired, it is worth comparing the two heating methods honestly.
Reasons to choose wood fired
- No 240-volt circuit needed — no licensed electrician required for the heater itself (though site lighting or accessories may still need electrical work).
- Lower ongoing energy cost: your fuel is firewood rather than electricity.
- Works during power outages.
- The ritual of building a fire appeals to many buyers.
- Simpler mechanically — fewer components to service.
Reasons to choose electric
- Temperature is precise and programmable; wood fired tubs require monitoring and stoking.
- You can pre-heat remotely on some models.
- No ash to dispose of, no wood to store.
- Easier to hold a steady temperature once warm.
If you want a hot tub you can step into at a specific temperature on a schedule, an electric hot tub is a better fit. If you enjoy the process and want a simpler, off-grid experience, wood fired wins. Our broader hot tub guide covers both types side by side.
Hot Tub Safety — Non-Negotiable Before You Go Further
The US Consumer Product Safety Commission states that hot tub water should never exceed 104°F, and that 100°F is generally considered safe for a healthy adult. If you are pregnant, have a heart condition, take medication, or have diabetes, circulatory problems, or high or low blood pressure, ask your doctor before using any hot tub. Keep the cover locked when children are around, and never leave children unattended near an open tub. See the CPSC's full guidance for the complete list of precautions.
Wood fired tubs add a fire-safety consideration: keep combustible materials away from the stove, follow the manufacturer's clearance requirements, and have a fire extinguisher nearby. Never leave a fire burning unattended in an unoccupied tub.
Wood Fired Hot Tub Options With Verified Prices
Most premium wood fired tubs are made by Dundalk LeisureCraft, a Canadian manufacturer whose products are sold through authorized US retailers. Verified prices from those retailers are listed below. One additional model — the SaunaLife S4N — is sold by Select Saunas at a verified price. Prices were checked in October 2026 and can change; confirm current pricing on the seller's page before purchasing.
Dundalk LeisureCraft Starlight (CT372W) — sold through Universe of Comfort
The Starlight is a cedar tub with a wood-burning external stove. Universe of Comfort lists it at $9,748.99, and their listing notes that price includes a 50% tariff because the item ships from Canada. Interior liner options are aluminum or white plastic. An optional roll-up cedar cover is available. Universe of Comfort offers complimentary shipping, no sales tax, and a price match guarantee. Confirm the current price at Universe of Comfort's product page.
- Manufacturer warranty: Dundalk LeisureCraft states a 5-year warranty on all saunas (leisurecraft.com); confirm whether this extends to the hot tub models at the retailer.
- Downside: Tariff-inclusive pricing means the cost could change if trade conditions change. Returns vary by brand at Universe of Comfort — confirm their policy for this specific product before ordering.
Dundalk LeisureCraft Polar Plunge Tub (CT362PP) — sold through Sauna Kit Co and Universe of Comfort
The Polar is primarily marketed as a cold plunge but can serve as a wood-heated soaking tub when paired with a stove. Sauna Kit Co lists it at $3,444 and Universe of Comfort lists the CT362PP from $3,343. Universe of Comfort also offers a bundle with a Penguin Cold Therapy Chiller and filter kit for $5,651 if you want chilled water instead. For wood-fired hot use, you would source a compatible stove separately. Sauna Kit Co does not accept returns on Dundalk products, so review that policy carefully at their refund page.
SaunaLife Model S4N — sold through Select Saunas
The SaunaLife S4N is a 6-person wood-burning hot tub from the Soak Series. Select Saunas lists it at a sale price of $5,690 (regular price $8,632 as shown on the page), includes a free sauna accessory package (stated $164 value) and free continental US shipping, and carries the full manufacturer's warranty. See current pricing at Select Saunas. Select Saunas also accepts HSA/FSA via TrueMed and offers financing, military discounts, and a price match guarantee.
- Capacity: Up to 6 persons per the listing.
- Included: Free sauna accessory package and free continental US shipping per the listing (checked October 2026).
- Downside: Confirm exact stove configuration (internal or external) and installation requirements on the product page, as the facts do not specify those details.
Side-by-side comparison
- Dundalk Starlight (Universe of Comfort): $9,748.99 including tariff; cedar; aluminum or plastic liner; 5-year manufacturer warranty (confirm application to this model); complimentary shipping.
- Dundalk Polar Plunge Tub (Sauna Kit Co / Universe of Comfort): from $3,343–$3,444 for tub only; cedar with 304 stainless steel or HDPE interior; designed as a plunge but usable as a soaking tub with a compatible wood stove; no returns accepted on Dundalk products at Sauna Kit Co.
- SaunaLife S4N (Select Saunas): $5,690 sale price; 6-person; wood burning; free shipping and accessory package included; full manufacturer warranty; HSA/FSA and financing available.
What Wood and Build Quality Mean for Your Tub
Wood choice matters more in a hot tub than in a sauna because the wood is in continuous contact with water. The species used by the brands above:
- Western Red Cedar — naturally rot-resistant, aromatic, and widely used in premium outdoor tubs. Dundalk's top-tier Dundalk Collection uses clear or knotty Western Red Cedar.
- Eastern White Cedar — the Canadian Timber Collection from Dundalk uses this at a more accessible price point; it is durable but softer than Western Red Cedar.
- Thermo-treated wood — some SaunaLife barrels use Thermo-Spruce or Thermo-Aspen (heat-treated for dimensional stability and reduced moisture absorption), though specific confirmation for the S4N hot tub model is not available in the verified facts; check the product page.
Construction quality markers to look for: stainless steel or galvanized hardware (plain steel rusts quickly in a wet environment), thick stave walls rather than thin panels, a liner material that does not leach chemicals (stainless steel, HDPE, or food-grade plastic), and tight stave joints that swell when wet to form a seal.
Installation and Site Prep: What Is Actually Involved
A wood fired hot tub sounds simple to set up, but the site requirements deserve serious planning before you order.
Weight and structural support
A filled tub is extremely heavy. Even a modest 2-person tub holding 400–500 liters of water weighs well over 1,000 lbs when filled and occupied. A 6-person tub can weigh significantly more. You need a level, structurally sound base — typically a concrete pad or reinforced deck — that can bear that load continuously. Get a local contractor or structural engineer to confirm your surface is adequate before the tub arrives. The cost of that preparation varies by your site conditions; get local quotes.
Drainage
You will need to empty and refill the tub periodically. Plan for where the water drains and whether you need a drain line or will use a pump-out hose. Gravity drainage is simplest if your yard slopes away from the tub location.
Water supply
A garden hose connection is typically all you need to fill a wood fired tub. No special plumbing is required for most models.
Stove clearance and chimney
An external wood-burning stove needs adequate clearance from the tub, fences, overhangs, and any combustible surface. Follow the manufacturer's minimum clearances exactly. If the stove has a chimney, local building codes may have requirements — check with your local permit office before installation.
Permits
Requirements vary widely by municipality. Some jurisdictions require a permit for any permanent outdoor structure or for open-fire appliances. Check locally before you buy.
For a broader look at outdoor sauna and plunge setups, our sauna and cold plunge home setup guide covers site-prep considerations in more detail.
Running Costs: What to Budget Beyond the Purchase Price
Unlike electric tubs, there is no electrical running cost for the heat itself in a wood fired tub. However, several ongoing costs exist:
- Firewood: The amount you burn depends on tub volume, starting water temperature, ambient temperature, and how long you heat. Get local firewood prices from a supplier in your area.
- Water treatment chemicals: Even though wood fired tubs are simpler than jetted hot tubs, you still need to manage water quality — pH adjusters, sanitizer (chlorine or bromine), and a test kit. Budget for these regularly.
- Water itself: You will drain and refill periodically. The frequency depends on bather load and how well you maintain water chemistry. Apply your local utility rate to your tub's volume.
- Accessories and maintenance: A cover is important for heat retention and safety; some models include one, others do not. Budget for a replacement eventually. Wooden staves may need periodic sealing or the exterior may need light maintenance depending on the species and finish.
- Site prep: If you need a concrete pad, a gravel base, or deck reinforcement, get local contractor quotes — costs vary too much by location and scope to estimate here.
How Wood Fired Hot Tubs Compare to Other Soaking Options
If you are weighing a wood fired tub against other approaches, here is how the categories compare based on verified facts from the brands we cover:
Inflatable hot tubs (Wave Spas)
Wave Spas inflatable tubs range from about $405 to $540 for inflatable models (sale prices, October 2026). They use electric heaters and bubble jets, require no site prep beyond a flat surface, and the Atlantic and Pacific series reach a maximum of 104°F. They heat slowly — Wave Spas notes their inflatables heat at 1.5°C per hour, so cold water to 40°C takes 16–18 hours. Wave Spas is rated 3.3/5 from 7,888 reviews on Trustpilot (October 2026). They are a low-cost entry point, but you sacrifice durability, heat retention, and the wood fired aesthetic. See Wave Spas' inflatable range.
Combination hot-and-cold tubs (Michael Phelps Chilly GOAT Valaris)
The Valaris Terrain and Glacier are two-body systems (hot tub side and cold tub side) at $14,995 each (October 2026). They run on 240V/50A and require a licensed electrician for installation. They are a serious contrast-therapy investment rather than a simple soaking tub. See the full specs at Chilly GOAT.
Redwood Outdoors Sequoia Wi-Fi Hot Tub
Redwood Outdoors lists a 3-person Sequoia Wi-Fi hot tub at a sale price of $4,200 (regular $5,999, October 2026 — currently out of stock at time of checking). It plugs into a standard 120V outlet, has 25 jets, Wi-Fi app control, and UV sanitation. It is fully electric and very different in character from a wood fired tub, but it is worth knowing the price range. See Redwood Outdoors. Redwood Outdoors carries a 4.3/5 Trustpilot rating from 391 reviews (October 2026).
For a fuller look at the overall hot tub market, visit our hot tubs section.
Buying Through a Multi-Brand Retailer vs. a Specialist
You can buy a Dundalk LeisureCraft wood fired tub through at least two US multi-brand retailers covered on this site: Sauna Kit Co and Universe of Comfort. There are differences worth knowing:
- Sauna Kit Co — does not accept returns on Dundalk products at all (per their published refund policy). Shipping for most products is free. Price match not mentioned in verified facts.
- Universe of Comfort — offers complimentary shipping, no sales tax, and a price match guarantee. Return terms vary by brand; confirm for Dundalk products specifically before ordering. Also offers a limited-time $150 gift card with purchase (October 2026).
- Select Saunas — for the SaunaLife S4N, they offer free shipping, a price match guarantee, HSA/FSA via TrueMed, financing, and military/first responder discounts. Installation services are available.
Dundalk LeisureCraft itself sells only through authorized retailers and publishes no direct prices. If you want to understand the full brand range, start at leisurecraft.com to see the collections, then contact a retailer for a current quote and lead time.
Common Mistakes to Avoid
- Underestimating the weight: Planning for a tub on a deck or patio without confirming load capacity is the most common costly mistake. Do the structural check first.
- Buying before checking local fire codes: Some HOAs and municipalities restrict open-fire appliances. A quick call to your local building department before ordering can save a return shipping nightmare.
- Ignoring the return policy: Dundalk products cannot be returned at Sauna Kit Co. Universe of Comfort's return terms vary by brand. Make sure you understand what you are agreeing to before you pay.
- Skipping water treatment: Wood fired tubs are not self-cleaning. Untreated water becomes unsafe quickly. Budget for and learn basic water chemistry before your first fill.
- Exceeding 104°F: The CPSC maximum is 104°F for a reason. Wood fired tubs without thermostats can overshoot if you are not monitoring. Use a floating thermometer and check regularly.
- Using the tub while the internal stove is lit: If your model has an internal firebox, the fire must be fully extinguished before anyone gets in.
Our barrel sauna buyer's guide covers some of the same brands if you are also considering adding a sauna alongside your tub.
Who Should Buy a Wood Fired Hot Tub
A strong fit if you…
- Want an off-grid or low-electricity soaking experience.
- Have easy access to affordable firewood.
- Enjoy the ritual of building and tending a fire.
- Have an outdoor space with a suitable level surface or can install a pad.
- Do not need the tub to be ready at a precise pre-scheduled time.
Consider alternatives if you…
- Want to step in at a specific temperature any time of day without preparation.
- Live somewhere with open-fire restrictions.
- Have no practical place to store and season firewood.
- Want jets or hydrotherapy — most wood fired tubs are soak-only.
- Need a product you can return easily if it does not work out (some brands have very restrictive policies).
Frequently Asked Questions
How long does a wood fired hot tub take to heat up?
Heat-up time depends on the tub's volume, the starting temperature of the water, ambient air temperature, and how efficiently the stove burns. A rough general expectation is one to three hours. In cold weather or with a large tub, it can take longer. The manufacturer's documentation for your specific model is the best source for realistic guidance, and some sellers include heat-up estimates in their product pages.
Do wood fired hot tubs require electricity?
The heater itself does not — that is the point. However, if your tub has a light, a pump for jets, or an accessories package, those components may need a power source. Confirm which features on your chosen model (if any) require electrical connections, and plan accordingly.
How do you keep the water clean in a wood fired hot tub?
You manage water chemistry the same way you would in any hot tub: test the pH and sanitizer levels regularly, adjust as needed with appropriate chemicals, and drain and refill the tub periodically. Some tub systems include a filter; others do not. Ask the seller specifically about filtration options for the model you are considering, and factor water-care supplies into your ongoing budget.
Can I install a wood fired hot tub on a deck?
Possibly, but only after confirming the deck can structurally support the filled weight. A filled tub with occupants can easily exceed 2,000–3,000 lbs depending on size. Have a licensed contractor or structural engineer evaluate your deck before ordering. The stove also requires clearance from combustible surfaces — review the manufacturer's installation requirements carefully.
Is a permit required for a wood fired hot tub?
Requirements vary by local jurisdiction. Some municipalities require permits for permanent outdoor structures, for open-fire appliances, or for both. Contact your local building or planning department before purchasing. Your HOA (if applicable) may also have restrictions on open-flame appliances or outdoor structures.
What is the warranty on a Dundalk LeisureCraft wood fired hot tub?
Dundalk LeisureCraft states a 5-year warranty on its products at leisurecraft.com. Whether this warranty applies equally to hot tub models (as opposed to saunas) is something you should confirm directly with the authorized retailer before purchasing. Warranty terms and what is covered can also differ between the manufacturer's statement and how an individual retailer handles claims.
Can a wood fired hot tub also be used as a cold plunge?
Some tub designs — including the Dundalk Polar and Baltic models — are marketed for both cold and hot use. Without a dedicated chiller, you would use ice to cool the water for cold plunging. With a chiller add-on (Universe of Comfort lists the Polar with a Penguin chiller bundle for $5,651 as of October 2026), you get mechanical cooling. For more on cold plunge options, see our cold plunges guide.
The Bottom Line
For buyers who want the most complete, ready-to-use wood fired hot tub at a transparent price: the SaunaLife S4N at Select Saunas ($5,690 sale price, October 2026) is a strong pick — 6-person capacity, free shipping, a free accessory package, HSA/FSA acceptance, a price match guarantee, and installation services available. See current pricing at Select Saunas.
For buyers who want a premium cedar tub and do not mind a higher price point: the Dundalk LeisureCraft Starlight through Universe of Comfort ($9,748.99, tariff-inclusive, October 2026) is a well-built Canadian cedar tub backed by Dundalk's 5-year warranty. Check today's price at Universe of Comfort.
For buyers on a tighter budget who want a tub that can serve double duty: the Dundalk Polar Plunge Tub (from $3,343 at Universe of Comfort or $3,444 at Sauna Kit Co, October 2026) can function as a soaking tub with a wood stove and doubles as a cold plunge with a chiller. Just note Sauna Kit Co's no-returns policy on Dundalk products. Browse the range at Sauna Kit Co or Universe of Comfort.
Whichever model you choose, confirm your site's structural capacity, check local fire and permit requirements, and review the return policy before you pay. Prices change — always verify on the seller's page. For related reading, our outdoor saunas guide and sauna and cold plunge setup guide cover the bigger picture of building out your backyard wellness space.