Understanding Sauna Sizes: Options for Every Space
Finding the perfect sauna size comes with many benefits. The right fit maximizes relaxation, enhances recovery, and improves your overall wellness experience.
But with so many options available, from compact models to spacious home units, choosing the right size can feel overwhelming.
If it is too small, it may not meet your needs. If it is too large, you could waste space and energy. This guide will help you find the ideal sauna for your space.
Understanding Sauna sizes
1-Person Saunas
A 1-person sauna is compact, usually measuring 3 feet by 3 feet and standing 6 to 7 feet tall. It fits well in homes, including apartments, as it doesn’t require plumbing or major installation.
Common placements include bathrooms, basements, or spare rooms. Some models are designed for outdoor use, built to withstand weather conditions.
Portable options are also available for easy relocation. With its small footprint and flexible placement, a 1-person sauna is a great way to enjoy heat therapy at home.
2-Person Saunas
A 2-person sauna typically requires about 4x4 feet of space, making it ideal for small homes or apartments.
It can fit into a bathroom if there’s sufficient ventilation. These saunas provide a cozy and intimate experience, but it’s essential to ensure enough room for both users.
Compared to larger models, a 2-person sauna is more space-efficient while still offering full sauna benefits.
3 or 4 Person Saunas
A 3-person sauna generally measures 4-5 feet wide and 3-4 feet deep, making it a great option for medium-sized rooms.
A 4-person sauna is slightly larger, typically requiring 20 to 25 square feet. Even in smaller rooms, a well-designed 3-person sauna can fit comfortably.
These saunas balance size and relaxation, offering enough space for multiple users without feeling cramped.
5+ Person Saunas
Larger saunas require 6 to 8 feet of space and can accommodate up to 7 people. Many models are designed for outdoor use, built with durable materials like cedar or hemlock for heat retention.
Prices range from $2,500 to $7,000, depending on materials and features. Investing in a 5+ person sauna provides a relaxing experience and adds value to your home.
Tips for Choosing the Right Sauna Size for Your Space
Measure Your Space – Ensure the sauna fits comfortably
Before purchasing a sauna, measure the width, length, and height of the installation area. Ensure the ceiling is at least 7 feet high for proper airflow. Leave extra space for ventilation and easy entry.
Think About Users – How many people will use it?
If the sauna is for solo use, a smaller unit is ideal. For shared use, choose a model that comfortably accommodates 2-4 people. If you frequently entertain guests, consider a larger sauna to prevent overcrowding.
Door & Ventilation – Plan for proper airflow and easy access
Proper airflow is key to an efficient sauna. Ensure the door allows easy entry and plan for vent openings (2-4 inches) to maintain consistent temperature and air circulation.
Check Ceiling Height – Make sure there's enough headroom
Ideally, you’ll want at least 7 feet of ceiling height for optimal comfort and heat distribution.
This gives enough room to sit upright without feeling cramped. If your ceiling is lower, it could limit ventilation and reduce the sauna’s effectiveness. Taller individuals may benefit from an 8-foot ceiling.
Indoor or Outdoor? – Choose the right placement for your needs
Indoor saunas are great for small homes, basements, or bathrooms, where they offer privacy and comfort.
They require good ventilation, so keep that in mind when selecting the location.
Outdoor saunas offer the bonus of being closer to nature but need more space and weatherproofing.
Ensure the sauna fits seamlessly into your outdoor space, whether near a pool or tucked in a quiet corner.
Seating Layout – Optimize for comfort and capacity
A well-planned seating arrangement optimizes comfort and capacity. Small saunas benefit from benches along one or two walls, while larger saunas can use tiered or corner seating for better space utilization.
Heating Efficiency – Pick the right heater for your space
Selecting the right heater prevents energy waste. A properly sized heater ensures quick, even heating without excessive power consumption.
Choosing the right temperature is just as important as picking the right sauna size. A study found that extreme heat, like 120°C, can cause nausea, dizziness, and even fainting, while 80°C offers the best balance of relaxation and safety.
If you're new to saunas or use them occasionally, sticking to moderate temperatures ensures a comfortable and enjoyable experience. Good insulation helps maintain temperature while reducing electricity costs.
Room to Grow – Consider future expansions
If you may upgrade your sauna later, consider modular designs that allow easy expansion. Planning for extra electrical capacity now can save costs in the future.
Extras & Accessories – Leave space for upgrades like lighting or speakers
Consider space for lighting, speakers, or other upgrades. LED lighting improves ambiance, while heat-resistant Bluetooth speakers enhance relaxation. Position accessories thoughtfully to avoid future modifications.
Indoor vs. Outdoor Sauna Sizes
Indoor vs. Outdoor Sauna: Space Requirements
Indoor saunas require at least 4-6 square feet per person. A 2-person sauna typically needs 6-10 square feet, while a 4-person sauna may occupy 10-15 square feet. Outdoor saunas need more space for foundations and ventilation.
Indoor vs. Outdoor Sauna: Ceiling Height Considerations
Outdoor saunas often have higher ceilings (7-8 feet) for better heat distribution, while indoor saunas may have lower ceilings for a cozier feel.
Indoor vs. Outdoor Sauna: Seating Capacity Differences
Outdoor saunas tend to accommodate more people due to flexible installation space. Indoor saunas are often limited to 2-4 people due to home space constraints.
Indoor vs. Outdoor Sauna: Customization Options
Indoor saunas can be customized to fit a home’s design, while outdoor saunas offer more flexibility for added features like porches.
Outdoor saunas require extra insulation for temperature control in varying climates.
Indoor vs. Outdoor Sauna: Insulation Needs
The insulation of an indoor sauna is generally simpler because it’s already protected from the elements.
However, outdoor saunas need to be better insulated to withstand temperature extremes.
Outdoor saunas typically require extra insulation to prevent heat loss and to ensure a comfortable temperature inside, especially in colder climates.
The size of the sauna, whether indoor or outdoor, will affect the amount of insulation needed.
A larger sauna needs more insulation to maintain consistent temperatures. Insulation also plays a vital role in energy efficiency, helping your sauna heat up faster and retain warmth longer.
Indoor vs. Outdoor Sauna: Ventilation Requirements
Proper ventilation is essential in both types. Indoor saunas need vents to prevent humidity buildup, while outdoor models require weather-resistant airflow systems.
Indoor vs. Outdoor Sauna: Flooring & Support
Indoor saunas use moisture-resistant flooring like tile or wood, whereas outdoor saunas need durable materials to withstand weather and may require a concrete foundation.
Indoor vs. Outdoor Sauna: Portability & Installation
Indoor saunas fit well in basements or bathrooms but may require adjustments for ventilation. Outdoor saunas, while larger, can be modular for easier relocation.
Indoor vs. Outdoor Sauna: Future Expansion Potential
Indoor saunas can be tricky to expand due to space constraints. Outdoor saunas tend to be easier to expand due to the availability of space.
Indoor vs. Outdoor Sauna: Impact of Climate
Outdoor saunas handle extreme temperatures better, making them ideal for colder climates. Indoor saunas maintain stable conditions year-round but require space within the home.
Standard vs. Custom Sauna Sizes
Standard Sauna Dimensions
A two-person sauna generally measures about 4’ x 4’, while a four-person sauna often stretches to 6’ x 6’. These sizes are designed to fit easily into most residential spaces.
Custom Sauna Size Options
A custom sauna offers the advantage of fitting your exact space requirements, whether in a small corner or a large open area.
While standard saunas are quick to install, custom builds require extra planning and tailoring.
Design Flexibility in Custom Sizes
Custom saunas provide exciting design possibilities, allowing you to personalize their shape, materials, and layout.
Whether integrating the sauna seamlessly into your home or creating a stand-out feature, a custom design can accommodate specific architectural needs, such as curved walls or unique nooks.
Even for outdoor spaces, custom saunas can be designed to complement your garden aesthetic while withstanding the elements.
Material Choices for Varying Sizes
The size of your sauna influences the materials you’ll need. Larger saunas require better insulation to maintain heat, which can increase material costs.
Cost Comparison: Standard vs. Custom Sizes
Custom saunas generally come with a higher price tag compared to standard models.
Design complexity, specialty materials, and custom-built features all contribute to increased costs.
Heat Distribution and Efficiency Based on Size
Sauna size plays a key role in heat distribution. Larger saunas take longer to heat due to their increased air volume, requiring more energy to maintain the desired temperature.
Space-Saving Sauna Options
One-Person Infrared Sauna
A one-person infrared sauna is an excellent choice for small spaces. These compact units typically require only 2x3 feet, making them ideal for apartments or homes with limited room.
Barrel Saunas for Small Outdoor Spaces
Barrel saunas offer an efficient and visually appealing solution for compact outdoor areas. Their round design minimizes wasted space while promoting better airflow, helping them heat up quickly.
Corner Saunas for Efficient Use of Space
Corner saunas are designed to maximize otherwise unused areas. Their angled construction makes them ideal for small rooms, fitting seamlessly into bedrooms, bathrooms, or home gyms.
Infrared Sauna Blankets for Ultimate Portability
For the most flexible sauna option, infrared sauna blankets offer portability and convenience.
Unlike traditional saunas, they require no dedicated space—simply unfold, plug in, and use them anywhere.
Convertible Sauna Benches with Heaters
Convertible sauna benches provide a smart space-saving solution. These benches can be adjusted or folded when not in use, making them ideal for small homes.
