Indoor Saunas

Create a Private Spa Experience Inside Your Long Island Home

Imagine enjoying the soothing heat and calm of a luxury spa without ever leaving home. At Long Island Custom Saunas, we specialize in designing and installing custom indoor saunas that blend naturally with your home’s layout, finishes, and lifestyle. Whether it’s a primary bathroom, finished basement, spare bedroom, or a creatively repurposed nook, we turn underused spaces into inviting wellness retreats meant for everyday use.

Each indoor sauna is thoughtfully designed around how you relax, recover, and recharge—prioritizing comfort, durability, and dependable performance you can enjoy for years.

What Comes With a Custom Indoor Sauna

No two saunas we build are alike. We don’t rely on generic, off-the-shelf kits. Our process includes careful space planning, detailed design, and professional installation tailored to your home. We work with premium wood options such as cedar, hemlock, and spruce, combined with advanced heating systems including electric, infrared, steam, or hybrid configurations.

To enhance your experience, optional upgrades include soft LED lighting, integrated audio, glass enclosures, ergonomic bench layouts, and multi-level seating—allowing you to create a refined, spa-inspired environment inside your Long Island residence.

Frequently Asked Questions

What’s the best location for an indoor sauna in a Long Island home?

The ideal location depends on your layout and daily routine. Finished basements are a popular choice for privacy and consistent temperatures. Primary bathrooms offer spa-like convenience near showers and tubs. Many homeowners also choose spare bedrooms, walk-in closets, or home gyms. We evaluate ventilation, electrical access, and usage goals to recommend the best placement for your home.

What sauna sizes work best indoors?

We can design a sauna for nearly any space, but common indoor sizes include:

* 4’ x 6’ – ideal for 1–2 people with compact seating

* 6’ x 8’ – comfortable for 3–4 people with tiered benches

* 8’ x 10’ – suited for families or larger wellness rooms

Ceiling height plays an important role in comfort and heat distribution. A ceiling height of around 7 feet is ideal for maintaining consistent temperatures, while taller ceilings may require additional planning to maintain efficiency.

We’ve designed saunas for challenging layouts such as angled ceilings, narrow rooms, and custom-built alcoves. During your consultation, we take precise measurements and design the best possible solution.

Is a basement a good option for an indoor sauna?

Absolutely. Basements are one of the most common locations for indoor saunas on Long Island, especially in homes with unused or partially finished lower levels. Cooler ambient temperatures help with efficiency, and the space allows flexibility in design. Whether you want a dedicated sauna room or one integrated into a gym or entertainment area, we handle insulation, airflow, and heater placement to ensure optimal performance.

We’ve also installed saunas in upper-level bathrooms, guest rooms, and converted attic spaces—each customized to fit the home’s structure and layout.

Do indoor saunas require special electrical or ventilation planning?

Yes. Most indoor saunas require a dedicated electrical circuit and proper ventilation to ensure safe and efficient operation. Electric and infrared systems typically need GFCI protection, while steam saunas require additional moisture management. We coordinate with licensed electricians as needed and plan ventilation in advance so your sauna functions flawlessly without affecting the rest of your home.

How long does it take to install an indoor sauna?

Once materials are ready, most indoor sauna installations are completed within 3 to 10 days, depending on complexity. The process begins with a detailed consultation and planning phase, followed by coordinated material delivery and electrical preparation. Our installers work efficiently and respectfully within your home, and once finished, we walk you through operation, care, and daily use.