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What You Need to Know About Building an Outdoor Sauna (2026)

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Why This Matters

Building an outdoor sauna is gaining popularity for its health benefits and social appeal, especially in regions with a strong sauna culture like Portland. As the market offers various types—from traditional Finnish to modern infrared—consumers and industry professionals need to understand the options, safety considerations, and maintenance requirements to make informed decisions. This trend reflects a broader interest in wellness-focused home upgrades and outdoor leisure spaces, impacting both consumer behavior and product innovation in the outdoor and wellness tech sectors.

Key Takeaways

Last winter, my husband and I received a Sun Home Luminar 5-Person Sauna to test. I live in gray and rainy Portland, Oregon, which has a pretty robust sauna culture to combat the February blahs.

Not only was I ecstatic, but almost everyone I knew was too. For the several weeks that I had the Sun Home box in my driveway, I received a constant stream of texts from friends. “Do you have a sauna?” they all asked, hoping to get invited over soon.

Since then, I’ve had several friends build their own backyard saunas, and I realize my experience may have been atypical. Still, I gleaned a few useful learnings that you can take away if you’re looking to install one of your own. If you’re considering dropping several grand on an outdoor sauna, here are a few things you might consider.

Lesson #1: Choose Your Sauna Type

There are several kinds of saunas. Traditional Finnish saunas use a wood stove and stones to heat the interior.

If you’re looking at modern electric-powered saunas, there are two types here. You can either choose an electric sauna, which has a single electric heat source, or an infrared (IR) sauna, which uses light panels to heat the body. If you opt for a sauna with an electric heater, you can also choose a dry or wet model. Pouring water over the heated rocks creates what the Finns call “löyly,” the steam that can help make a hot room more comfortable.

Photograph: Adrienne So

Devotees of one or the other can argue back and forth forever. Traditional wood-burning saunas are more likely to catch on fire. A dry sauna is more sanitary and therefore easier to maintain. The health benefits of a traditional sauna have been more widely studied, and so on.

Most people I know who have chosen to install saunas have opted for an electric wet model. This is the most similar to the public sauna that you might find at a gym. An IR sauna is usually cheaper. However, you might find multiple heat-emitting light panels more uncomfortable than a single heat source, where you can avoid direct contact more easily.

Lesson #2: Choose Your Location Wisely

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