Best Outdoor Sauna Kits for Small Backyards

You’re in the market to purchase an outdoor sauna. Great choice; when done right, it can boost recovery, improve sleep, and transform your backyard into a daily wellness retreat. 

But “outdoor sauna” covers a lot of ground. Between heat sources, materials, insulation, ventilation, electrical needs, and even local codes, it’s easy to overspend on features you won’t use or overlook details that matter in the long run.

As someone who has helped over 8000+ sauna builders complete their outdoor sauna projects, I have seen firsthand what matters (and what does not) when choosing an outdoor sauna for your home. 

So, in this expert guide, I’ll cut through the noise and help you match a sauna to your climate, space, budget, and wellness goals. You’ll learn:  

• How to choose the right outdoor sauna type, 
• The best sauna for outdoor spaces, and 
• Their best use cases.

But before we get started… 

What makes a great outdoor sauna? 

A great outdoor sauna is a purpose-built system designed to deliver consistent heat, withstand the elements, and remain low-maintenance over time. When done right, it becomes both a wellness tool and an investment that pays off year after year.

Top features of a great sauna are: 

• It has equal temperatures. This keeps the whole cabin comfortable from bench to ceiling, so you don’t end up roasting the rest of your body while your feet stay cool. 

• It has enough space to lie down for two people or more and still gives you a safe distance from the heater. 

• It uses the right materials inside. Benches, walls, and trim should be made from low-resin, stable woods (or other sauna-appropriate materials) that won’t splinter, stain, or off-gas under heat and humidity. 

For a comprehensive overview of all available options, explore our complete Outdoor Saunas collection to see the full range of designs and configurations.

Factors to consider before purchasing an Outdoor Sauna

1. Ensure there’s enough clearance in your backyard 

When you’re working with limited space, every square foot matters, and several factors can eliminate what appears to be adequate room. The key is to understand that your sauna’s footprint is just the beginning of your space requirements.

It’s not just about fitting the structure itself; you’ll also need buffer space for safe access, ventilation, and compliance with local building codes. For example, in the city of Rosemount, MN, accessory buildings up to 200 square feet must be set back at least 7.5 feet from side property lines and 5 feet from rear property lines. Similar rules exist in many municipalities and you need to find out if yours does. 

That said, plan your sauna placement with clearances in mind before you ever order a kit. Measure your available space, roof overhangs, door swing, ventilation needs, and safe access to utilities like electricity or chimney clearance in the case of wood-burning models.

2. Choose a compatible, small-sized Sauna Heater  

Since you have a small backyard, you also have to consider your heater options. This is because you’re dealing with limited electrical access, proximity concerns from neighbors, and often tighter budgets that make efficiency paramount. 

The good news is that smaller saunas require less heating capacity, which opens up options that might not work for larger installations. 

Therefore, opt for a compatible, small-sized heater that delivers sufficient power to heat your sauna efficiently without overloading your electrical system or incurring excessive operating costs. 

For guidance on selecting the right size heater for your space, check out our comprehensive 2-4 person sauna kit buying guide that covers capacity planning and electrical requirements in detail.

3. Consider the sauna wood 

Material selection becomes even more critical in small backyards because your sauna will likely be more visible and subject to closer inspection from both family and neighbors. Additionally, small properties often have microclimates created by surrounding structures that can accelerate weathering if the wrong materials are chosen.

I recommend thermally modified woods, such as Thermo-Aspen and Thermo-Pine, for small backyard installations. These materials resist moisture absorption and dimensional change without requiring chemical treatment, which means less maintenance is needed in spaces where extensive wood care equipment or drying areas may not be available. 

4. Build Quality 

Build quality issues that might go unnoticed on larger properties become glaring problems in small backyards where the sauna is the focal point. Also, small spaces often mean limited access for repairs, making initial quality even more important for long-term satisfaction. 

That said, opt for brands and builders with a proven track record for outdoor use, clear warranties, and transparent specifications.  

Pay attention to details that matter in small yards: a well-sealed door with a durable threshold, service access panels for the heater and controls, and bench construction that’s easy to remove or replace. 

Avoid thin “sauna-style” kits that use low-density boards and minimal framing. They save money up front but tend to sag, warp, and allow heat loss. 

5. Type of outdoor sauna

There are different types of outdoor saunas, but I’ll categorize them into two, that is, by heating and shape.

By Heating Method

The heating system defines your sauna experience, maintenance requirements, and operational costs. Through my professional installations, I’ve worked with every major heating technology and can guide you through the practical implications of each choice.

• Traditional Sauna

Traditional saunas use electric or wood-burning heaters to warm sauna stones, radiating heat throughout the cabin. This creates the classic Finnish sauna experience with temperatures ranging from 175–230°F (≈ 80–110°C) and humidity levels that can be adjusted by ladling water onto the heated stones (a practice called löyly).

In my experience, traditional heaters offer homeowners the most consistent and controllable experience. They operate at higher temperatures and promote more intense sweating, which helps you eliminate toxins faster.   

For those interested in the authentic wood-fired experience, explore our Wood Burning Outdoor Sauna collection featuring traditional Finnish-style heaters and chimney systems.

•  Infrared Sauna

Infrared saunas use light wavelengths to heat your body directly rather than warming the air around you. The operating temperatures range from 120°F to 150°F, providing a milder yet effective heating experience. This makes them more tolerable for individuals sensitive to heat.  

From a technical standpoint, infrared saunas are simpler to install since they require only standard 120V electrical service. In fact, most models come pre-assembled. All you need to do is set them up following the manufacturer’s manual, and you’re good to go. 

If you want a more authentic Finnish experience, go for the traditional sauna.  Anton, one of our Finnish sauna experts at The Sauna Heater,  explains why in this video: 

“If you value high heat, maximum relaxation, and the classic sauna vibe, go for the traditional saunas. It’s not just a way to relax; it’s tradition, a lifestyle, and a wellness powerhouse all rolled into one.”

By Shape

The shape of your outdoor sauna affects heat distribution, structural efficiency, and interior space utilization.

• Barrel Sauna

Barrel saunas have gained popularity due to their distinctive appearance and efficient heat circulation. The curved walls naturally promote air movement, reducing heating times and improving energy efficiency.  

However, barrel saunas present practical trade-offs. The curved walls limit headroom along the perimeter, which can feel restrictive for taller users. 

Additionally, the bench configuration options are limited, and the round structure makes it challenging to incorporate features such as large windows or complex ventilation systems.  

Anton agrees with this, too. In this YouTube Video, he explains why they’re a bad choice for Finnish Sauna Designs: 

“Finnish saunas are built with one principle in mind: to create an evenly distributed heated space where you can sit with your feet above the heater. The barrel’s biggest design flaw is its limited height, which makes it difficult to follow that principle effectively.”  

If you're drawn to the unique aesthetic and efficient heating of barrel designs, browse our Barrel Sauna collection to compare different sizes and wood options.

• Cabin Sauna

Rectangular cabin saunas offer maximum interior space efficiency and design flexibility. The straight walls provide consistent headroom throughout the interior, allowing for varied bench configurations. This shape also simplifies insulation installation, which improves long-term energy efficiency.

From a structural perspective, cabin saunas distribute weight more evenly, making foundation requirements more predictable. They also accommodate larger windows and more sophisticated ventilation systems.  

Top Picks: Best Outdoor Sauna Kits for Small Backyards (2025)

Before diving into our detailed reviews, you might want to check out our comprehensive analysis of the best home sauna kits for 2025, which covers both indoor and outdoor options across all price ranges.

1. Best Overall: Loyly Original

The Loyly Original represents everything I’ve learned about designing saunas for small and large spaces. When I founded Loyly, I wanted to create a kit that eliminated the common frustrations I encountered during hundreds of installations: 

• Compatibility issues between heaters and controls, 
• Assembly complications, and 
• Performance problems that emerge after the first year of use.

People want it, too. After countless conversations with customers and consulting on thousands of sauna builds, one thing became clear: people want a complete sauna kit that follows Finnish principles to the T and that led us to create the Loyly original. 

What sets the Loyly Original apart is its integrated approach to design and engineering. The benches are positioned well above the heater, so that you can sit comfortably and enjoy sauna going without constantly shifting to find the “hot spot.”

The best part is that it comes as a complete sauna kit, including a matching HUUM Hive 18kW 240v electric heater. The HUUM heating system arrives pre-wired with matching controls, eliminating the guesswork that comes with separate component purchases. 

Key Specifications:

• Capacity: 6-10 people comfortably
• Construction: 40mm Thermo-Pine walls, PIR-insulated ceiling clad with Finnish Spruce
• Heating: Integrated HUUM Hive 18kW 240v electric heater and everything required to run it 
• Electrical Requirements: 240V/1-phase electrical connection 

Pros:

• Integrated heating eliminates compatibility concerns and simplifies installation
• Premium Thermo-aspen benches are heat-resistant and comfortable to sit on
• Fully mechanical ventilation system with intake and exhaust vents run by fans  
• Space optimization maximizes capacity within a compact footprint  

Cons:

• Premium pricing reflects the use of high-quality materials and an integrated engineering approach.
• Substantial weight requires careful foundation planning 

Who It’s For: 

If you want an integrated system backed by comprehensive warranty coverage and are willing to invest in premium materials for long-term performance, the Loyly Original delivers exceptional value.  

Score: 9.8/10. 

2. Auroom Mira Cabin Sauna Kit: Best Cabin Sauna

Estonian craftsmanship meets modern engineering in Auroom’s Mira cabin, and the results are impressive. This kit has everything I love about European sauna design: 

• Precision manufacturing, 
• Thoughtful material selection, and 
• Engineering that prioritizes long-term performance over short-term cost savings.

The quality of the wood can transform your backyard from a functional space into a serene, Scandinavian-inspired retreat. Here’s how it looks: 

What really sets this kit apart is the attention to thermal performance. The thermally modified Aspen construction, combined with professional-grade insulation systems, delivers energy efficiency that rivals much larger and more expensive installations.  

Key Specifications:

• Capacity: 2-person sauna  
• Construction: Thermally modified Aspen panels with R-15 insulation throughout
• Heating: Separate heater required (8-9 kW recommended for optimal performance)
• Electrical Requirements: 240V, 35-40 amp service

Pros:

• Modular panel design allows future modifications and expansions as needs change
• Thermally modified Aspen requires minimal maintenance while providing excellent weather resistance
• Professional-grade insulation and weather sealing systems ensure energy efficiency
• Adjustable foundation system adapts to uneven terrain without expensive site preparation

Cons:

• A separate heater purchase adds complexity to the planning process and increases the total investment.
• Assembly requires advanced construction skills and specialized tools

Who It’s For:

The Mira appeals to discerning buyers who appreciate European craftsmanship and want flexibility for future modifications. 

Score: 8.8/10

To explore the complete range of Estonian-made saunas and compare different Auroom models, visit our Auroom Outdoor Saunas collection.

3. SaunaLife Cube CL3G Luxury 2-person Sauna: Best compact Sauna Kit

If you have a (really) tight space and need a sauna that maximizes every square inch without compromising on quality, the SaunaLife Cube CL3G is the way to go. In my experience with dozens of ultra-small space installations, this model delivers the most impressive space-to-performance ratio I’ve encountered in the premium sauna market.

What I really love about this design is how the curved shape naturally sheds water, reducing maintenance requirements compared to flat-roofed alternatives. 

Additionally, the curved cube design eliminates wasted space by following the body’s natural lines — benches, door swings, and heater placement are all arranged so that every inch is functional. 

And despite its compact footprint, the CL3G doesn’t feel cramped. It comes with clever bench tiers and a thoughtful headroom profile that lets two adults sit comfortably, and the interior sightlines keep the cabin feeling open rather than boxed in.

Key Specifications:

• Capacity: 2 people  
• Construction: Premium Thermo-Aspen panels  
• Heating: Separate heater required  
• Electrical Requirements: 240V 

Pros:

• Ultra-compact footprint fits spaces where larger designs prove impossible
• Premium Thermo-Aspen construction provides excellent weather resistance with minimal maintenance
• Cube design maximizes interior volume within minimal exterior dimensions
• Lower electrical requirements work with most residential service upgrades

Cons:

• Limited capacity restricts use to couples or individual sessions
• Separate heater purchase adds complexity to planning process

Who It’s For: 

If you’re working with extremely tight quarters but want premium materials and construction quality, go for the SaunaLife Cube CL3G sauna. 

Score 7.1/10. 

4. Heritage Lux Piccolo Outdoor Sauna Cabin

Heritage has built its reputation on premium construction quality, and the Piccolo represents their thoughtful approach to small backyard installations. 

Every design element has been optimized for efficient space utilization while maintaining the company’s commitment to materials and construction techniques that ensure decades of reliable service.

Check it out: 

What I really love is the clever interior layout. It has storage solutions and bench configurations that maximize usable space within a footprint that fits where larger designs prove impractical. 

The thermally modified exterior cladding resists weather damage without the need for chemical treatment. At the same time, the Nordic Spruce interior provides the authentic sauna ambiance that makes each session feel like a retreat to the Finnish forests.

Key Specifications:

• Capacity: 3 people 
• Construction: Thermally treated exterior cladding with Nordic Spruce interior
• Heating: Separate heater required  
• Electrical Requirements: 240V 

Pros:

• Optimized design maximizes space efficiency for small backyard installations
• Premium materials combine a weather-resistant exterior with authentic interior aesthetics
• Professional construction quality with marine-grade hardware and precision manufacturing
• Comprehensive technical support and warranty coverage
• Attractive design aesthetics complement residential landscaping and architecture

Cons:

• Limited capacity may disappoint families wanting to sauna together regularly.
• Separate heater selection adds complexity to the planning process
• Comes at a high cost 

Who It’s For: 

The Piccolo appeals to quality-focused buyers who work with limited backyard space but prioritize premium construction over maximum capacity.  

Score: 8.6/10

5. Haljas Hele Mini Glass Sauna: Best Luxury Sauna

Haljas Hele Mini uses a completely different approach to outdoor sauna design, and the results are stunning. It’s made of glass and resembles an architectural statement that transforms outdoor spaces into luxurious wellness retreats.

If you have a modern home and love a minimalist-looking space, this sauna is just perfect for you: 

Although it’s made of glass, the interior is entirely wooden. It features thermo-alder (sometimes Aspen, too, depending on your preferences) that’s rich, elegant, and heat-resistant. The clean, bright color also accentuates the sauna design and gives it a “luxury” vibe. 

This sauna kit is delivered pre-assembled, so all you need to do is place it in your backyard and start using it immediately! 

Key Specifications:

• Capacity: 1-2 people comfortably
• Construction: Insulated glass panel system with Thermo-Aspen/-alder interior accents
• Heating: Any 9kW wall mount, electric sauna heater 
• Electrical Requirements: 240V

Pros:

• Stunning visual appeal transforms outdoor spaces and provides a unique sauna experience
• High-performance glass maintains thermal efficiency while offering transparency
• Premium Finnish engineering and manufacturing provide exceptional build quality
• Compact footprint fits minimal spaces while making a dramatic visual impact

Cons:

• Limited capacity restricts use to individual or couple sessions
• Premium luxury pricing  
• The glass surface is not advisable if you have kids or pets around 

Who It’s For: 

If you prioritize design innovation over traditional functionality and want a distinctive outdoor wellness experience, this sauna is your best bet. 

Score: 6.8/10

Conclusion: Finding the Best Outdoor Sauna for Your Small Backyard

The perfect outdoor sauna for your small backyard is the one that fits your space, matches your budget, meets your performance expectations, and provides years of reliable wellness experiences for you and your family. 

Take the time to evaluate your specific requirements carefully, and don’t hesitate to consult with professionals during the planning process. Remember that your sauna is a significant investment that extends far beyond the initial purchase price. 

For a detailed comparison of the top brands mentioned in this guide, read our in-depth analysis comparing Auroom vs Heritage vs Loyly sauna kit brands to help you make the most informed decision.

If you’re still not sure which brand to go for, contact our sauna experts for a personalized consultation. We’re always ready (and happy) to help you make the right choice for your space. 

FAQs 

What size backyard do I need for an outdoor sauna?

For small backyards specifically, you need to think beyond the sauna footprint to include clearances, access, and practical considerations that larger properties don’t face.

Most compact outdoor sauna kits require a minimum 10’ x 12’ area to accommodate the structure, plus the necessary clearances, but this is where small backyard planning becomes challenging. 

Building code setbacks vary, too. Some municipalities require only 5-foot clearances from property lines, while others mandate 10 feet or more. In a typical small backyard, these setbacks can eliminate 50-75% of your available space, forcing the sauna into locations that might not be ideal for daily use or aesthetic appeal.

Is wood-burning or electric better for small backyard saunas?

For small backyards, go for electric heaters because they are space-saving. Wood-burning stoves require chimney clearances of 10-36 inches from combustible materials, which can often prove impossible when your sauna is situated close to homes, fences, or property lines. 

How long does it take to install an outdoor sauna kit?

Installing a sauna kit typically takes 1-3 days, depending on the sauna’s size and the installer’s experience.