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PureTherm

PureTherm | Glass-Front Square Outdoor Sauna | 6kW | 4–6 Person

PureTherm | Glass-Front Square Outdoor Sauna | 6kW | 4–6 Person

Regular price $7,199.00 USD
Regular price Sale price $7,199.00 USD
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Low stock: 8 left

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Please note

When the purchased product is in stock at the nearest overseas warehouse, delivery usually takes 3 to 7 days.

When the purchased product is not in stock at the overseas warehouse, it will be arranged to be shipped from China. Delivery usually takes 25-30 days (Excluding factory production time).

Our production time is estimated to be about 35 days, and the actual situation depends on the order sequence

If you have any questions, please contact the service support email: support@thermalfrontier.com

Product Description 

Thermal Frontier customers have been asking for a true outdoor sauna built for real North American weather—something that can handle rain and snow, offers strong corrosion resistance, stays leak-resistant with tight sealing, heats up quickly, and holds temperature well with improved insulation. 

This prefabricated outdoor sauna is designed for backyard installation in Canada and the U.S. It features a durable, weather-ready build and thermally modified wood to help resist moisture-related wear and decay over time. A high-capacity sauna heater supports faster, more consistent heating for comfortable sessions with less waiting.

The all-black exterior delivers a sophisticated, ultra-luxury look, while the oversized glass wall brings in plenty of natural light. Integrated LED lighting adds a premium ambiance for evening use. A sloped roof helps ensure dependable drainage throughout the year.

As one of the largest models in its class, this sauna is an ideal choice for customers who want a premium outdoor sauna experience that looks as good as it performs—available through Thermal Frontier.

Product features 

  • Dimensions: 78.74" x 78.74" x 82.6" (rear) x 86.6" (front)

  • Space capacity: 4–6 people

  • Material: Inner red cedar + outer hemlock (0.2" thick carbonized planks)

  • Power: 6 kW

  • Voltage: 220V

  • Heating type: Internal-controlled sauna heater

  • Front panel: Glass front panel

  • Glass type: Tempered, tea-colored glass

  • Roof style: Sloping roof

  • Roof cover: Large panel roof cover split design

  • Seating: Double-layer seat (upper 23.6" wide, lower 17.7" wide)

  • Lighting: Starry sky + spotlights

  • Actual weight: 1,873.9 lbs

  • Gross weight: 1,984.1 lbs

 

Sauna Installation Tips

  1. Select the right installation spot

Site surface: Choose a level, firm surface that can safely support the sauna’s weight. Do not install in areas that collect water or stay soggy after rain.

Airflow and privacy: Pick a location with good airflow and reasonable privacy, and avoid placing the sauna where strong winds will blow directly into the entrance.

  1. Get the area ready

Confirm clearances: Measure the installation area carefully to make sure there is enough room for assembly and for future service access.

Verify electrical access: If you’re using an electric heater, confirm there is an appropriate power connection nearby that meets local electrical and safety requirements.

  1. Before you start assembling

Inspect the parts: Unpack and review all components to ensure nothing is missing or damaged (wall sections, benches, heater, glass, hardware, etc.).

Gather tools: Have the needed tools on hand such as a screwdriver, drill, level, measuring tape, and any other tools listed in the manual.

  1. Assembly overview

Base setup: Make sure the base is dry, flat, and stable. Use a moisture barrier or protective mats underneath if recommended for your surface type.

Install the walls: Follow the manual/video step by step. Confirm each wall panel is properly aligned and securely connected to the base and roof sections.

Install the heater: Follow the heater manufacturer’s instructions for placement, ventilation clearance, and all wiring connections. If you’re not qualified, hire a licensed electrician.

Add benches and accessories: Install benches, backrests, and any included accessories according to the layout diagram, ensuring everything is secure and comfortable.

  1. Sealing and heat retention

Check seals: Make sure doors and glass panels close correctly and seal well to reduce heat loss and prevent moisture intrusion.

Confirm insulation: Verify any insulation pieces are properly seated and installed as directed to improve heating efficiency.

  1. Ventilation setup

Exhaust vent: Install/confirm the exhaust vent location to allow warm, moist air to exit and prevent excess humidity buildup.

Fresh air intake: Ensure the intake vent is positioned correctly so fresh air can enter and circulate properly.

  1. Electrical safety check

System test: Once assembled, test the heater and controls to confirm proper operation and ensure there are no faults.

Grounding: Confirm the unit is properly grounded to reduce the risk of shock or electrical issues.

  1. Final cleaning and inspection

Clean interior: Wipe down the inside to remove dust, packaging debris, and any installation residue.

Full function test: Run the sauna and confirm the heater, controls, lighting, and temperature regulation are functioning normally.

  1. First-use preparation

Initial preheat: Before your first session, run a full preheat cycle to verify performance and allow the interior to fully dry.

Review user instructions: Read the user guide so you understand safe operation, recommended temperatures, and usage best practices.

  1. Ongoing maintenance

Routine inspections: Periodically check the sauna’s structure, fasteners, seals, and electrical components to keep everything operating safely.

Regular cleaning: Clean and maintain the wood and surfaces routinely to keep the sauna sanitary and looking its best.

If you have any questions or need help during installation, please contact our support team at support@thermalfrontier.com.

Care and Maintenance 

  1. Routine cleaning

Floors and walls: Wipe down floors and wall surfaces with warm water and a mild, neutral soap. Avoid harsh chemical cleaners, as they can damage or dry out the wood.

Benches and armrests: Since these areas have the most skin contact, clean them with a damp cloth and mild soap. If the surface starts to feel rough, lightly sand with fine-grit sandpaper to keep it smooth.

Ceiling and lights: Wipe the ceiling occasionally and keep it as dry as possible. Try to prevent moisture from collecting around light fixtures.

  1. Air out the sauna after use

After each session, ventilate the sauna to reduce moisture and help prevent mold or bacteria. Open the door and any vents/windows and allow airflow until the interior is fully dry.

  1. Inspect the wood condition

Check the wood periodically for cracking, warping, or any signs of deterioration. If you notice damage, replace affected boards as soon as possible. Avoid oil-based wood treatments unless specifically recommended, as they can impact how the sauna heats and how the wood performs.

  1. Manage humidity and temperature

Use reasonable heat and humidity settings and avoid keeping the sauna at extreme conditions for long periods, which can extend the life of the wood. If possible, use a thermometer and hygrometer to monitor conditions. A common recommended range is about 40%–60% humidity and 70°C–100°C.

  1. Heater upkeep

Keep the heater free of dust and debris so it runs efficiently. Use the correct sauna stones and replace them as recommended by the heater manufacturer.

For electric heaters, periodically check that wiring and connections are secure. If you’re unsure, have a qualified electrician inspect it.

  1. Reduce risk of mold and bacteria

If needed, use a sauna-safe anti-mold/anti-bacterial product on interior surfaces, especially in areas that stay damp.

Consider using removable wood or plastic floor mats that can be lifted out for cleaning and drying.

  1. Ongoing inspection plan

Create a simple maintenance schedule to check key areas such as the wood, heater, and electrical components. Depending on usage, it’s smart to have a professional inspection done annually or every few years.

  1. Door and window care

Regularly check the door and any windows for proper sealing to prevent heat loss. Lubricate hinges, handles, and locks as needed so everything opens and closes smoothly.


Refunds & Returns

1. About the return and exchange time limit
Our return period is 30 natural days, which means you have 30 natural days to apply for a return starting from the day you receive the goods.
Time limit after sale: one year

2. Specific instructions for product returns and exchanges

A. Return requirements for eligible products:

  1. The returned product must be in a new, unworn, undamaged state, and come with the original brand packaging box and all accessories (if the transparent packaging tape on the outer packaging box has been torn off, it is also considered unsealed). You must also provide the order number.

  2. Returns and refunds require 5–10 clear product photos or videos. Requirements: show every area of the product. We will use these materials to determine whether the product is damaged.

  3. If you need to return the entire order, please be sure to return all products from the order (including free gifts and packaging gift boxes).

  4. Returned and exchanged products cannot be modified. Products may be modified, but we are not responsible for any expenses or after-sales issues caused by modifications.

  5. If there is a problem with the heater, we will send you a new one for free, or we will refund $200. We do not accept additional compensation.

B. Return Policy Details
Please inspect your order upon receipt. If the product is defective, damaged, or you received the wrong product, please contact us within 24 hours so we can evaluate the issue and correct it. If the product is found to be defective or missing accessories, please contact us within 24 hours and we will replace or reissue it for free. If it exceeds 24 hours, the product damage is deemed to be caused by you.

For other reasons, such as you no longer want the product or you accidentally purchased the wrong item: you can cancel the order within 24 hours after confirming the order. We only charge a 3% handling fee for this. If the order has been shipped, you must return the product after receiving it. You will be responsible for round-trip shipping, and we will charge 20% of the purchase price.

If you notify us that you need to cancel the order within 24–48 hours after purchase, we will charge $500.

Note: We do not accept returned goods without a prior return request or before the return request is approved. Otherwise, the loss shall be borne by you.

C. The following items cannot be returned or exchanged:
Special promotion products, customized products, and any other products that are listed on the product page as not eligible for returns or exchanges.
Free gifts cannot be returned or exchanged.

D. About return and exchange shipping fee:

  1. If you find that the product has quality problems after receiving the goods, we will accept the return after you provide the relevant documentation. We will bear the shipping cost when sending.

  2. If you find that the product is incorrect after receiving it, please contact us and provide your order number. After verifying the issue, you can choose to return or exchange, and we will bear the shipping cost for return and exchange.

  3. If the return is caused by non-quality issues or buyer-related reasons, the buyer is responsible for return shipping and the cost to re-send.

3. How to return or exchange goods?
Return or exchange application: Please contact our customer service email support@thermalfrontier.com to apply for a return or exchange. We estimate it will take 1 to 3 working days to process the application. After the application is approved, please send the goods you need to return along with the product list, to the address shown in the return/exchange confirmation email.

If you use an untrackable express delivery method to return goods, the company will not be responsible for loss, damage, or misdelivery of the goods. Please understand.

4. Return and exchange process:
Contact customer service email to register for return/exchange → provide pictures of returned goods → customer service confirms return/exchange application → send back returned goods → return confirmation → process refund or exchange

5. About refunds
Once we receive and inspect your return, it may take 1–3 calendar days. After confirmation, we will refund your original payment method. The time it takes for you to receive the refund depends on your payment provider, which generally takes 7–14 business days.

If you have any questions, please contact the service support email: support@thermalfrontier.com

Shipping Policy

Delivery area: Continental United States (excluding remote areas such as Alaska and the Islands)
Canada's southern provinces (northern provinces are excluded)
Australia
Delivery: Canada, USA and Australia to your door, shipping costs are as shown on the page.

Processing time: Our production time is estimated to be about 35 days, and the actual situation depends on the order sequence

Delivery time:
We have overseas warehouses in the western and eastern United States and Canada. We will select the nearest warehouse for delivery based on your address and product inventory.

When the purchased product is in stock at the nearest overseas warehouse, delivery usually takes 3 to 7 days.

When the purchased product is not in stock at the overseas warehouse, it will be arranged to be shipped from China. Delivery usually takes 25-30 days (Excluding factory production time)

About taxes:

We only charge shipping, no tax. Taxes are collected by local customs. Taxes are borne by the customer.

If you have any questions, please contact the service support email: support@thermalfrontier.com

View full details
  • Red Cedar

    Naturally aromatic, built for premium durability, and highly resistant to decay.

  • Thermo Spruce

    Thermally treated for added stability, lasting durability, and a smooth, refined finish.

  • Hemlock

    Lightweight, low in resin, and naturally stable for a smooth, comfortable sauna session.

  • ♻️

    Detox

    Encourages deep sweating to support your body’s natural detox process.

  • ♨️

    Relaxation

    Eases stress and relaxes muscles for a calm, restorative experience.

  • 🌿

    Wellness

    Improves circulation and supports overall health and well-being.

Smart & Safe Tips for Using an Electric Stove

After the electric stove is switched on, it heats up and creates a steady airflow cycle: cool air is drawn in from the bottom, and warm air exits from the top.

When adding sauna stones, do not pack the stove full. Overfilling can force the heating elements together, which may lead to a short circuit and damage the heater.

Arrange the stones so they cover the heating elements while still allowing air to flow freely through the top. To confirm proper ventilation, place your hand near the bottom of the stove after you’ve arranged the stones and turned it on. If you feel air being pulled inward, airflow is working correctly.

Following these steps helps improve airflow and can extend the service life of your electric stove.

  • Waterproof construction

    The sauna roof is finished with asphalt shingles that provide excellent waterproof protection and added thermal insulation to help reduce heat loss inside the sauna.

  • Fresh air vent

    A ventilation channel that allows air exchange between the inside and outside of the sauna, helping maintain fresh airflow throughout the room.

  • Natural wood handle

    Heat-resistant wooden door handles stay cool to the touch, helping prevent burns when opening and closing the door.

  • Complete accessory set

    The included accessories cover the essentials for everyday sauna use.

  • Benches

    The sauna includes two interior benches, giving you space to sit or stretch out comfortably while you enjoy your session.

  • Say No to Subpar Products

    We take safety and quality seriously. Our saunas go through strict electrical safety checks, quality inspections, and required compliance testing for the markets we serve. We can provide supporting documentation upon request—so you can buy with confidence from a reputable manufacturer.

    Every sauna is built with safety as the priority, with testing that can include electrical safety, heat performance, and durability under high-temperature use to ensure dependable, long-term operation.

  • Zero VOCs (Volatile Organic Compounds)

    A sauna should be a clean, non-toxic environment. Unlike products that use plywood or engineered composites that may release VOCs over time, we prioritize solid-wood construction and tongue-and-groove assembly to minimize glues. Where adhesive is needed, we use low-emission, water-based materials—so you can enjoy your sauna with confidence.
    Through independent testing of materials and components (where applicable), we aim to ensure the sauna environment remains clean, low-odor, and free from harmful off-gassing—so you can enjoy the full benefits of your sauna with peace of mind.