Are you considering adding a touch of rustic luxury to your outdoor space? 

Wood fired hot tubs offer a unique combination of traditional craftsmanship and natural relaxation that electric models simply can't match. 

In this comprehensive guide, we'll explore everything you need to know about wood fired hot tubs, from their impressive benefits to our top recommendations in the UK market.

Are Wood Fired Hot Tubs Worth It?  

Wood fired hot tubs are worth every penny. 

The gentle, consistent heat from a wood fired hot tub creates the perfect environment to melt away stress. Unlike electric tubs, which can sometimes produce a mechanical humming noise, wood fired models offer a peaceful, crackling ambience that makes it easier to relax. According to research, this heat therapy can lower cortisol levels (the stress hormone) and promote a sense of well-being! 

Other benefits include: 

1. Provides Natural Detoxification for the Body

Immersion in hot water opens pores and encourages sweating, one of the body's primary methods of eliminating toxins. The gradual, natural heat from wood fired tubs creates optimal conditions for detoxification, helping cleanse your system without harsh chemicals or extreme temperatures. Check out some of our 4 person hot tubs to make it a family activity.

2. Improves Sleep Quality

Regular hot tub sessions, particularly in the evening, have been linked to improved sleep patterns. The drop in body temperature after leaving the hot water signals to your body that it's time to rest, which is a big plus if you struggle with insomnia or disrupted sleep cycles.

3. Helps to Ease Muscle and Joint Pain

The combination of heat and buoyancy in a hot tub reduces joint pressure while increasing blood flow to sore muscles. This makes wood fired hot tubs excellent for athletes recovering from intense training, individuals with arthritis, or anyone experiencing everyday aches and pains.

4. Provides a Natural, Rustic Experience

There's something inherently satisfying about the ritual of preparing a wood fired hot tub. From lighting the fire to the gradual warming of the water, the process connects to traditional practices that are not so common in this digital age. 

5. Eco-Friendly and Off-Grid Ready

Unlike electric hot tubs that constantly draw power, wood fired models can operate completely off-grid, making them perfect for remote properties or eco-conscious individuals.  

Top 5 Wood Fired Hot Tubs in the UK

After extensive research and customer feedback analysis, we've identified the top wood fired hot tubs currently available in the UK market:

1. Deluxe Wood Fired 6-Person Hot Tub with Integrated Heater: 

This outstanding premium model showcases the new wood fired hot tub market trend – combining traditional craftsmanship and contemporary design. 

The Deluxe 6-person hot tub is made from eco-friendly materials. Its stainless steel heater virtually disappears into the tub's silhouette while delivering exceptional heating efficiency through its water circulation system.  

What we love: 

• Durable Construction: Features a robust fiberglass frame encased in thermowood for longevity and resistance to outdoor elements. 

• Spacious Design: Comfortably accommodates up to six people.

• Optional Enhancements: Offers upgrades like an insulated cover, air bubble system, LED lighting, and PUR insulation for a customized and luxurious experience.

What we don't like: 

• Manual Heating Process: Wood fires require manual effort to start and maintain, which may be less convenient than electric or gas heaters. 

• Heating Time: Depending on external temperatures, heating the water can take approximately 1.5 to 2 hours, which might be longer than some users prefer.  

• Maintenance of Wood Exterior: While thermo-treated wood is built to last, occasional maintenance can help maintain its look and strength as the years go by.

Capacity

Comfortably seats 6 adults  

Materials

Constructed from premium-grade thermowood and fibreglass

Heater Type

Integrated stainless steel heater with a chimney 

Best for:

Families looking for a reliable, efficient wood fired hot tub with excellent build quality and moderate maintenance requirements.

2. Viking Industrier Wood Burning 6-Person Hot Tub with Integrated Heater

The Viking Industrier model is one of our top wood fired hot tubs, excelling in performance, material quality, and design. This stunning wooden tub doesn't just sit pretty—it draws attention and turns your garden into an appealing site that everyone will gawk at! 

The Viking Industrier wood fired hot tub is built to commercial standards using an A-grade spruce wood finish in a fiberglass frame. It's integrated with a stainless steel heater and chimney for heating efficiency. 

What We Love:

• Spacious Capacity: Can comfortably accommodate up to six individuals. 

• Integrated Electric Heater: Features a built-in stainless steel electric heater. 

• Durable Construction: Crafted with high-quality spruce wood and fibreglass. 

• Aesthetic Appeal: The traditional wood fired design adds a rustic charm to your outdoor spaces, making them more aesthetically pleasing. 

What We Don't Like:

• Maintenance Requirements: It's important to clean the chimney regularly to avoid creosote buildup and keep your hot tub running efficiently.

• Safety Considerations: External components, such as the chimney and stove surfaces, can become extremely hot during operation, posing a burn risk if not handled with caution.  

Capacity

Spacious design accommodates 5 - 6 persons 

Materials

Spruce and Fibreglass 

Heater Type

Stainless steel with chimney

Best for:

Luxury seekers who want the ultimate durability and performance with minimal concern for budget.

3. Polar Spa Elite 200 Wood Fired Hot Tub with 35kW Stove

The Polar Spa Elite 200 is another hot-shot tub that focuses more on user comfort and traditional authenticity. This model features a 3-step ladder and perfectly contoured seats for lumbar support. Unlike the two models above, this one uses a wood fired hot tub that heats up in 2 - 2.5 hours! 

Pair it with an air massage system and chromotherapy lighting for best results and satisfaction.  

What we love: 

• Efficient Heating: Equipped with a powerful 35kW wood fired stove. 

• Durable Construction: The exterior is crafted from thermo-treated pine or birch, which are known for its resilience against weather elements, cracking, and warping. 

• Compact and Spacious Design: Has a 200 cm diameter that can comfortably seat 4 to 6 people. 

• Optional Customizations: The hotel offers various personalisation options, such as air massage systems, hydromassage systems, and chromotherapy lighting. 

What We Don't Like:

• Manual Operation: Manual effort is required to start and maintain the fire, which may be less convenient than electric alternatives.

• Heating Time Variability: While the average heating time is 2 to 2.5 hours, external factors like ambient and initial water temperatures can affect this duration.

• Maintenance of Wood Exterior: Although durable, thermo-treated wood may require periodic maintenance to preserve its appearance and structural integrity over time.

Capacity

Medium-sized tubs are comfortable for 4-6 adults and have a 1000l water capacity.    

Materials

Premium Thermopine (heat-treated Scandinavian pine) and birch exterior. 

Heater Type

External 35kW wood-burning stove with chimney 

Best for:

Anyone who wants an eco-friendly option that's also user-friendly.  

4. Polar Spa Comfort 160 Wood Fired Hot Tub with 40kW Stove

The Polar Spa Comfort 160 solves the common issue facing urban and small-space dwellers who want an authentic wood fired bathing experience without sacrificing their precious outdoor living space. 

This compact model packs all the best features into its space-conscious footprint—it's only 160 cm in diameter and 110 cm in height! It comes with a 40kW external wood fired stove that heats the water in just 2 hours. The best part is that the Polar Spa can seat up to four people.  

What We Love:

• Efficient Heating: Equipped with a powerful 40kW external wood fired stove, this hot tub can heat water to a comfortable temperature in approximately 2.5 hours to heat up. 

• Compact Design: Its 160 cm diameter and 110 cm height efficiently utilise space while comfortably accommodating 2 to 4 individuals. 

• Durable Materials: The exterior is crafted from thermo-treated pine or birch, known for their resilience against weather conditions.

• Optional Customizations: Offers various add-ons such as air massage systems, hydromassage systems, and chromotherapy lighting, which allows you to customise your spa experience to preferences.

What We Don't Like:

• Manual Operation: The heating process requires manual effort to start and maintain the fire, which may be less convenient than electric alternatives.

• Limited Capacity: While perfect for small groups, the 2—to 4-person capacity may not be suitable for larger gatherings or families seeking more spacious accommodations. 

• Maintenance of Wood Exterior: Although durable, thermo-treated wood may require periodic maintenance to preserve its appearance and structural integrity over time.

Capacity

Intimate design for 2-4 adults with 1000-litre capacity.

Materials

Thermo pine or birch for the exterior, 

Heater Type

External 40kW wood-burning stove with chimney protection 

Best for: Couples or small families with limited space still want rapid heating and quality construction.

The best is always saved for the last, isn't it? 

5. Polar Spa Elite Quattro 180 Wood Fired Hot Tub with 35kW Stove

One word comes to mind when you see this hot tub: Stunning. 

Thanks to its square, ergonomic design, the Elite Quattro 180 proves you can relax in style. This shape creates 18% more usable interior space than similar models with a round shape. 

As expected, this model is built to shine and perform excellently. It houses a powerful 35kW wood fired heater that heats the water within 1.5 - 2.5 hours! 

Unlike the others mentioned in this review, the Polar Spa Elite Quattro is designed with a German-engineered BUFA gel coat for durability and impeccable resistance to UV rays, extreme temperatures, and chemical reactions. This makes it perfect for the unpredictable UK climate.  

What We Love:

• Efficient Heating: It is equipped with a powerful 35kW wood fired stove that heats water to a comfortable temperature within 1.5 to 2.5 hours. 

• Compact Design: Despite its compact, space-friendly design, this hot tub comfortably accommodates up to 8 people. 

• Durable Construction: The tub is constructed from high-quality composite materials with a gel coat finish from BUFA (Germany) for durability, UV resistance, and a smooth, glossy appearance.  

• Optional Enhancements: This option offers various add-ons, such as air massage systems, hydromassage systems, chromotherapy lighting, and thermal covers, allowing users to customize their spa experience according to their personal preferences.  

What We Don't Like:

• Manual Operation: The heating process requires manual effort to start and maintain the fire. Better, purchase the wood fired and electric 3kW heater for combined performance. 

Capacity

The square design efficiently seats 6 - 8 adults with 1500l water capacity. 

Materials

The tub features high-quality composite materials with a gelcoat finish from BUFA (Germany) and thermo pine or thermo birch for the exterior. 

Heater Type

External 35kW wood-burning stove 

Best for:

Anyone looking for excellent value without compromising quality or the authentic wood fired experience.

How Long Does It Take a Wood Fired Hot Tub to Heat Up?

On average, a hot tub heats up at 3ºC to 6ºC per hour and takes four to six hours to reach the desired temperature. 

However, this depends on the heater, surrounding temperature, insulation quality, and wood type.

For optimal performance, we recommend:

1. Using well-seasoned hardwood with moisture content below 20%.

2. Keep the fire box loaded during the heating phase.

3. Using an insulated cover while heating.

4. Sheltering the tub from strong winds can reduce heating efficiency.

Pro tip: To reduce heating time, consider filling with warm water from your domestic supply rather than starting with cold water. Read more about spa heating here. 

Do Wood Fired Hot Tubs Need Chlorine?

While wood fired hot tubs don't inherently require different water treatment than electric models, their natural aesthetic often leads owners to seek more natural sanitization options.

Standard options include:

• Chlorine: Effective but can be harsh on wooden surfaces over time

• Bromine: A gentler alternative to chlorine, works well in hot water

• Mineral systems: Copper/silver ionization reduces chemical dependency

For wood fired hot tubs, we typically recommend a balanced approach:

• Use minimal bromine (rather than chlorine) for residual protection

• Supplement with natural minerals or ozone if possible

• Change water more frequently (every 1-2 months, depending on usage)

• Thoroughly clean surfaces when changing water

This approach preserves the natural experience while ensuring proper hygiene.

Read more: How to add chlorine to hot tubs. 

How to Choose a Wood Fired Hot Tub

Unlike electric models that often focus on jets and technology, wood fired tubs require different evaluation criteria to ensure you select one that perfectly matches your lifestyle, space constraints, and desired experience. 

Our team at Heracles Wellness has helped hundreds of customers make informed decisions on their wood fired hot tub purchases, and we've distilled this experience into the following comprehensive selection guide:

1. Size and Capacity: 

Your wood fired hot tub's size and capacity will significantly impact the installation and your overall bathing experience. Typically, models range from 2-person tubs with diameters around 150cm to larger 8-person versions exceeding 220cm. 

Consider how many people will use the tub regularly, but also account for occasional gatherings when having extra seating might be handy. Remember that larger tubs require more water (increasing heating time), more wood to maintain temperature, and substantially more garden space – not just for the tub itself but also for safe movement around it and wood storage nearby. 

You'll also need to factor in access routes for delivery; many UK homes have narrow gates or passages that may prohibit larger models.

Ideally, pick a model that offers a fine balance between these factors. 

2. Your Budget

Wood fired hot tubs are available at varying prices, ranging from £4,500-£6,000+ to £ 6,000+. These high-end models are built with heat—and weather-resistant materials and have other user-friendly features that contribute to a relaxing spa session. 

You must also factor in non-product-related costs, such as delivery and installation fees. Add-ons such as hydrotherapy water massage, air filtration systems, or even advanced heaters always attract an extra fee.  

3. Heating Times and Efficiency

Heating efficiency is one of the most critical yet often overlooked aspects of wood fired hot tub selection. 

The difference between an efficient and inefficient model can mean the difference between a 2-hour or 5-hour wait for your relaxing soak – and wood consumption if your hot tub uses a wood fired heater. 

External stoves generally heat water faster than integrated models but may not be aesthetically pleasing. To shorten heating times, look for designs with efficient water heaters, chimneys, and high-quality insulation. 

You can also purchase a hot tub cover to protect the tub from the surrounding temperature when heating. 

4. Maintenance Requirements

Maintenance is another key factor you need to consider. 

Ideally, you want a hot tub that's easy to maintain and doesn't require frequent upkeep. So, choose a model built with premium-grade, weather-resistant materials. This ensures your hot tub remains in perfect condition even after years of usage. 

Here are some important questions to help you evaluate long-term maintenance needs:

•  How easy is it to replace stove parts that inevitably wear out? 

• Are bands adjustable to accommodate wood expansion and contraction? 

• How accessible are underwater surfaces for cleaning? 

The most user-friendly designs incorporate thoughtful features like removable benches for easy cleaning, accessible stove components, and simple water management systems that can save hours of maintenance time each month.

5. Additional Features

While wood fired hot tubs traditionally focus on simplicity, modern models incorporate various features that sweeten the experience without compromising authenticity. 

Thermal covers are the most essential accessory, as they reduce heating time by 30-40% and maintain temperature between uses. Look for thick (50mm+) insulated designs with secure fastening systems. 

Seating options also vary dramatically. The traditional flat-bottomed tubs can be uncomfortable for extended soaking, while ergonomic bench designs provide superior comfort. 

If you plan to place the hot tub outdoors or use it for commercial purposes, consider purchasing solar-powered or battery-operated LED lighting to illuminate it. This will make the tub inviting and more relaxing, especially at night.  

Overall, consider the features that will make each spa session most enjoyable.  

6. Material Quality

The materials used in your wood fired hot tub construction fundamentally determine its durability, appearance, and long-term satisfaction. 

For the tub body, cedar is the premium choice because of its innate rot resistance and excellent insulation properties. In fact, this wood can last 20+ years with minimal maintenance. 

Other Wood Options:

• Redwood and Spruce: These woods offer similar benefits to cedar, with good resistance to rot and weathering. However, they might not last as long as cedar, so regular maintenance is more important for these materials.

• Pine: While a more affordable option, pine tends to require more upkeep and may not offer the same level of durability as cedar. However, when properly treated, it can still be a suitable material for hot tubs.

External and Internal Construction:

• Stove and Heater: Ensure the stove or heater is made of high-quality stainless steel or other durable metals to prevent rust and corrosion. A well-built stove is essential for efficient heating and longevity.

• Insulation: Good insulation helps to reduce heat loss and improve energy efficiency. Insulated liners or covers can significantly increase heat retention, leading to faster heating and reduced wood consumption.

Maintenance Tips for wood fired Hot Tubs

Proper maintenance ensures your wood fired hot tub remains in excellent condition for many years while providing a safe and hygienic bathing environment. Each aspect of maintenance plays a crucial role in extending the lifespan of your investment and enhancing your overall experience.

Water Care

Proper water chemistry is essential for hygiene and preserving your tub's wooden structure. 

• Test water 2-3 times weekly using reliable test strips to ensure pH levels remain between 7.2 and 7.8. 

• Sanitizer levels should be maintained according to your chosen method, whether chlorine, bromine, or natural alternatives. 

• Balance alkalinity (80-120 ppm) to stabilize pH and prevent fluctuations that can damage wood. 

• Change water every 4-8 weeks, depending on usage frequency. Changes are more frequent during heavy use periods or warm weather.

Wood Maintenance

The wooden structure requires specific care to maintain both aesthetics and structural integrity. Apply manufacturer-recommended wood treatment annually, typically oil-based products for traditional tubs or specialized sealants for Thermowood. 

Other tips are: 

• Inspect the exterior for signs of weathering, especially on the south-facing side, where UV exposure is highest. 

• To prevent water infiltration and further damage, promptly check for and address any cracks or splits. 

• Tighten bands as needed, typically 2-3 times during the first year as the wood settles, then annually thereafter.

Stove Care

The heating system demands regular attention to maintain efficiency and prevent safety hazards. 

• Remove ash after each use once completely cooled, as accumulated ash reduces heating efficiency. 

• Inspect the chimney monthly and clean as needed to remove creosote build-up, which can pose a fire risk if neglected. 

• Examine fire grates for warping or damage and replace them when necessary. 

• Check seals and gaskets annually, replacing any that show signs of deterioration to maintain optimal combustion efficiency.

Key stove maintenance:

• Weekly: Thorough ash removal, firebox inspection

• Monthly: Chimney inspection, door seal check

• Annually: Complete professional inspection of all components

Seasonal Considerations

Different seasons present unique maintenance challenges for wood fired hot tubs. 

• In summer, protect wood from UV damage with appropriate treatment and consider a breathable cover when not in use to prevent algae growth from strong sunlight. 

• For winter operation, maintain minimal heat to prevent freezing or drain completely if unused for extended periods. 

• Spring and autumn are ideal times for deep cleaning, preventative maintenance, and addressing issues before extreme weather conditions.

Seasonal maintenance checklist:

• Summer: UV protection, algae prevention, increased water testing

• Winter: Freeze protection, extra insulation, careful thawing procedures

• Spring/Autumn: Deep cleaning, structural inspection, treatment application

Cover and Accessories Maintenance

Your hot tub cover and accessories require regular attention to maximise their effectiveness and lifespan. 

• Clean vinyl covers monthly with appropriate cleaners to prevent mildew and deterioration. 

• Check insulation integrity quarterly by looking for water absorption or weight increase. 

• Maintain wooden accessories like steps and drink holders with the same treatment as your tub. 

• Rinse and thoroughly dry any headrests or cushions after use to prevent mold growth, and store removable items in dry locations when not in use.

Quick cover care tips:

• Remove snow promptly to prevent excessive weight stress.

• Allow periodic air-drying to avoid mold buildup.

• Apply vinyl protectant quarterly to prevent UV damage.

• Replace damaged foam inserts rather than letting moisture seep in.

Troubleshooting Common Issues

Addressing minor issues with your wood fired hot tub early can help you avoid more serious complications later. Use the following guidelines to troubleshoot common problems and keep your tub running smoothly:

• For leaks between staves, try tightening bands before considering more invasive repairs. 

• Address water taking longer to heat by checking for creosote buildup or wet wood. 

• For water clarity issues, verify your sanitiser levels and filtration method before shocking. 

• Manage algae problems by thoroughly cleaning surfaces with appropriate products, paying special attention to water lines and hard-to-reach areas beneath benches.

Common issues and solutions:

• Green water: Check pH, increase sanitizer, consider algaecide

• Cloudy water: Check filtration, sanitizer levels, and total dissolved solids

• Wood discoloration: Clean and apply appropriate treatment

• Slow heating: Clean the chimney, check the wood quality, inspect water circulation

Conclusion

When selecting your ideal wood fired hot tub, carefully consider your size, materials, heating efficiency, and budget needs. The five models we've highlighted represent the best options currently available in the UK market at different price points and specifications.

Explore our expert picks for wood fired hot tubs, or browse our full hot tub collection to find the perfect fit. Need help deciding? Our team is here to provide personalized recommendations.