FAQ
Frequently Asked Questions
Planning a sauna, steam shower, or cold plunge? Here are answers to the questions we hear most. Can't find yours? Call us at (720) 610-6524 or email support@thehelixshop.com.
Choosing a sauna
What are the different types of saunas?
Traditional (Finnish) saunas use an electric or wood-burning heater to warm the air and sauna stones, typically to 150–195°F (65–90°C). Humidity is low, and you can pour water on the stones for bursts of steam. Barrel, cabin, and cube saunas are all traditional saunas.
Infrared saunas use infrared panels that warm your body directly instead of heating the air, so they run cooler, typically 120–150°F (49–65°C), with no steam. They're usually indoor units with built-in controls.
Steam rooms use a steam generator to fill an enclosed space with moist heat, typically around 110–120°F with very high humidity. You can add one to a shower enclosure.
Traditional vs. infrared: how do they compare?
| Feature | Traditional | Infrared |
|---|---|---|
| Heat source | Electric or wood-burning heater | Infrared panels |
| Temperature | 150–195°F (65–90°C) | 120–150°F (49–65°C) |
| Humidity | Low, with optional steam from stones | None |
| How it feels | Hot air surrounds you | Radiant heat warms your body directly |
| Common styles | Barrel, cabin, cube, indoor kits | Indoor cabins |
| Warm-up time | Moderate | Fast |
| Best for | Anyone who wants the classic high-heat sauna experience | Anyone who prefers a gentler, lower-temperature session |
Should I choose an indoor or outdoor sauna?
Outdoor saunas are built with weather-resistant wood, a roof, and a foundation, and they suit yards, patios, and decks. Indoor saunas fit basements, bedrooms, and spare rooms, and need a suitable floor, ventilation, and electrical supply. Browse our outdoor and indoor saunas.
What size sauna do I need?
Match the seating count to how many people will use it at once, and consider going one size up if you like to stretch out or host friends. Our product titles list the number of people each model seats.
Do saunas arrive assembled?
Most of our saunas arrive as kits with pre-cut parts that you assemble yourself. Some models arrive preassembled and need equipment to move them into place. The product page tells you which, and our team can answer questions about assembly before you order.
Heaters
Is the heater included with the sauna?
For SaunaLife & some Thermasol saunas, the heater is sold separately. Finnmark Designs & many Thermasol saunas include the heater. The product page shows the heater we recommend for each sauna. Infrared saunas have built-in heating panels.
Electric or wood-burning heater?
| Feature | Electric | Wood-burning |
|---|---|---|
| Power | Electricity (usually 240V) | Firewood |
| Where it works | Indoor or outdoor | Mainly outdoor, or indoor with proper venting |
| Control | Digital or programmable | Manual |
| Heat-up | Fast | Slower |
| Upkeep | Low | Moderate, with ash cleanup |
| Feel | Clean, convenient, consistent | Rustic, with the aroma and crackle of a wood fire |
| Off-grid use | No | Yes |
Wood-burning heaters need a chimney or flue and proper clearances, so follow the manufacturer's installation instructions.
What size heater do I need?
| Sauna volume (cubic feet) | Heater size |
|---|---|
| Up to 100 | 3.0 kW |
| 100–150 | 4.5 kW |
| 150–250 | 6.0 kW |
| 250–300 | 7.5 kW |
| 300–425 | 8.0 kW |
| 425–600 | 9.0 kW |
| 600–750 | 10.5 kW |
Multiply width × depth × height to find your volume. Add extra for glass walls, stone, or other surfaces that don't insulate well, and round up if you're between sizes. Sizing varies by brand, so check the manufacturer's chart or ask us.
Installation
What kind of foundation does an outdoor sauna need?
It needs a level, stable, well-drained base, such as a concrete slab, a compacted gravel pad, or a deck rated for the sauna's weight. Check the product's installation manual for the exact requirements.
What electrical setup is required?
Most electric heaters need a 240V dedicated circuit, and the wiring should be done by a licensed electrician. Each heater's manual lists its exact requirements.
Do I need permits?
Possibly. Requirements vary by city, county, and HOA, and may apply to the foundation, electrical work, or the structure. Check with your local building department before you order.
Steam showers
Can I turn my shower into a steam shower?
Often yes. The enclosure must be fully sealed to hold steam, with a ceiling and surfaces suited to moisture. A steam generator, control, and steam head complete the setup. Browse our steam and shower collections, or call us to review your plan.
How do I choose a steam generator?
Generator size depends on the volume of your enclosure and the materials it's made of. Tile, stone, and glass absorb more heat and need a larger generator. Our team can size one for your space.
Cold plunges
Do I need a chiller for a cold plunge tub?
Not always. You can use ice, but a chiller holds a steady temperature without constant refilling and is more convenient for daily use. See our cold plunge tubs.
Ordering, shipping, and support
How is my order shipped?
Accessories usually ship by FedEx with tracking. Saunas, steam equipment, and tubs ship by freight carrier and are delivered to your curb.
Is shipping free?
Saunas & Cold Plunges include shipping in the total cost. Standard shipping on accessories may be offered free at certain times, subject to change, and heaters and accessories added to a sauna order ship with it at no extra charge. Some products show free shipping on their page.
What is your return policy?
See our full return policy.
What warranty do your products have?
Products are covered by their manufacturers' limited warranties. Coverage varies by brand and product, so check the product page or contact us before you buy.
Is sauna use safe for everyone?
Heat and cold can affect people differently. If you're pregnant or have a medical condition, ask your doctor before you start. Stay hydrated, avoid alcohol before or during a session, and follow each product's manual.
Can you help me plan my project?
Yes. We're an American-owned small business in Denver, Colorado, and our US-based team is happy to help you choose a sauna, heater, steam system, or tub. Call (720) 610-6524 or email support@thehelixshop.com.









