Buying an infrared sauna is one of the best wellness investments you can make — but it's also one of the easiest to get wrong. Between vague marketing claims, confusing EMF specifications, and an overwhelming number of models on the market, first-time buyers routinely make mistakes that lead to buyer's remorse, underperforming sessions, and wasted money.
After years of helping thousands of customers find the right sauna, we've seen the same purchasing errors come up again and again. This guide walks you through the ten most common infrared sauna buying mistakes — and exactly how to avoid each one — so you can buy once, buy right, and start enjoying your sauna from day one.
1. Buying Based on Price Alone (Ignoring Build Quality and Heater Technology)
This is far and away the most common mistake we see. A shopper finds a no-name infrared sauna on a marketplace site for $800, compares it to a $2,500 model from a reputable manufacturer, and assumes they're getting a deal. In reality, ultra-cheap infrared saunas cut corners in the places that matter most: heater output, wood quality, EMF shielding, and construction durability.
The heating system is the heart of any infrared sauna, and it's where low-cost manufacturers save the most money. Cheap carbon panels produce weaker infrared output, take longer to heat up, struggle to maintain stable temperatures, and often lack the engineering needed to keep electromagnetic field emissions in check. The result is a sauna that barely gets warm enough to produce a meaningful sweat, loses heat every time you shift position, and may expose you to unnecessarily high EMF levels during every session.
Wood quality is the other area where budget saunas cut corners aggressively. Lower-grade wood warps faster, absorbs odors more readily, and may be bonded with adhesives that off-gas at sauna temperatures. Reputable brands like Dynamic Saunas, Finnmark Designs, and Golden Designs use solid, reforested Canadian Hemlock or Western Canadian Cedar with no laminates and no toxic glues — and they back that construction with 5-year warranties on heating elements and electronics.
How to avoid this mistake: Set a realistic budget that prioritizes heater performance, wood quality, and manufacturer reputation over the sticker price. Entry-level FAR infrared saunas from trusted brands start around $1,500–$2,000 and deliver dramatically better performance than a $700 no-name unit. If budget is tight, a well-built FAR infrared model will outperform a cheap "full spectrum" sauna every time.
2. Not Understanding the Difference Between FAR Infrared, Full Spectrum, and Traditional Saunas
Many buyers jump into a purchase without understanding the fundamental technology differences between sauna types — and end up with a sauna that doesn't match their wellness goals at all.
Here's the quick breakdown. A traditional sauna uses an electric heater or wood-burning stove to heat rocks, which radiate heat into the air. Air temperatures reach 170–200°F, and the experience is all about sitting in intensely hot air. You can add water to the rocks for steam (löyly). An infrared sauna uses heating panels that emit radiant infrared energy directly into your body rather than superheating the air around you. Operating temperatures are lower (typically 120–150°F), but the infrared energy penetrates deeper into your tissues, raising your core temperature and triggering a heavy sweat response even at those more comfortable air temperatures.
Within the infrared category, there are two main types. FAR infrared saunas emit long-wave infrared energy (roughly 5.6–15 microns) using carbon or ceramic panels. FAR infrared penetrates deepest into the body and is the primary wavelength responsible for core heating, heavy sweating, and detoxification. Most entry-level and mid-range infrared saunas are FAR infrared. Full spectrum infrared saunas combine near, mid, and far infrared wavelengths into a single unit. Near infrared supports skin health and cellular repair, mid infrared targets joints and circulation, and far infrared handles deep core heating. Full spectrum models are more expensive but deliver the broadest range of therapeutic benefits in a single session.
How to avoid this mistake: Before you shop, decide what you're optimizing for. If deep sweating, cardiovascular support, and detoxification are your primary goals, a quality FAR infrared sauna is an excellent choice at a lower price point. If you want the most comprehensive therapeutic coverage — including skin rejuvenation, joint relief, and cellular recovery on top of deep sweating — a full spectrum infrared sauna is the upgrade worth making. For a detailed side-by-side comparison, read our guide on full spectrum vs. FAR infrared saunas, or explore the differences between infrared and traditional saunas if you're still deciding between heating methods entirely.
3. Ignoring EMF Levels — or Obsessing Over Them Without Understanding the Specs
EMF (electromagnetic field) exposure has become one of the most talked-about topics in infrared sauna shopping, and buyers tend to make one of two opposite mistakes: either they ignore EMF entirely, or they obsess over it to the point of making irrational purchasing decisions based on marketing claims they don't fully understand.
Every electrical device produces some level of EMF — your phone, laptop, hair dryer, and yes, your sauna. The question isn't whether an infrared sauna produces EMF (it does), but whether the levels at your actual seating position are within safe, well-studied thresholds. The problem is that "low EMF" has become a marketing buzzword, and not all manufacturers measure or report EMF the same way. Some test at the panel surface (which always produces high readings), some test at 6–8 inches from the panel, and some test at the actual sitting distance. Without knowing how the measurement was taken, a spec sheet number is nearly meaningless.
Here's a practical framework: readings below 3 milligauss (mG) at your sitting distance are considered excellent by conservative international guidelines. Readings below 1 mG are classified as "near-zero EMF." For context, a typical laptop produces 5–20 mG at your lap, and a hair dryer can exceed 200 mG at close range. Brands like Finnmark Designs achieve under 0.5 mG on their carbon panels (UL tested), and Dynamic Saunas' near-zero EMF line stays under 2 mG at sitting distance.
How to avoid this mistake: Don't ignore EMF — it's a legitimate quality indicator — but don't let it be your only purchasing criterion either. Look for saunas that provide EMF readings specifically at the sitting position, and prioritize brands that use third-party or UL testing rather than self-reported numbers. Our detailed guide on EMF levels in infrared saunas breaks down exactly what these ratings mean and which brands test most transparently. Browse our infrared sauna collection to compare EMF specs across every model we carry.
4. Choosing the Wrong Size for Your Space and Usage
Size mistakes go both directions. Some buyers purchase a 1-person sauna to save money, then realize they want to share sessions with a partner and feel cramped. Others buy a 4-person model for solo use, only to discover that the larger cabin takes significantly longer to heat up and uses more electricity — and the extra bench space sits empty session after session.
Interior dimensions matter more than the marketing label. A sauna marketed as "2-person" varies dramatically in actual interior space depending on the brand and design. Always check the interior dimensions (length, width, and height) and compare them against your available floor space plus the clearance required around the unit. Most infrared saunas need 2–4 inches of space on each side for airflow and ventilation. Hybrid models that include a traditional heater often need 4–6 inches. Ceiling clearance of at least 6 inches above the sauna is recommended for proper air circulation and access to the power supply area.
Also think about where you plan to install the sauna. Indoor infrared saunas are designed for dry, climate-controlled spaces — a bedroom, basement, home gym, walk-in closet, or dedicated wellness room. If you want a sauna for your backyard, patio, or garage that's exposed to the elements, you need a model specifically engineered for outdoor use with weather-resistant construction, thicker wood, proper sealing, and drainage considerations.
How to avoid this mistake: If you'll primarily sauna alone, a 1-2 person model gives you a comfortable experience with faster heat-up times and lower operating costs. If you regularly want to share sessions, size up to a 2-person or 3-person model. Need to fit a sauna into a tight space? Corner saunas are designed to maximize floor plans with limited room. For outdoor installations, browse our dedicated outdoor sauna collection for models built to handle weather exposure. If you're unsure which size and type fits your situation, our Sauna Selector Tool asks a few quick questions and matches you with the right models in seconds.
5. Overlooking Heater Placement and Coverage
This is a mistake that even experienced buyers make because it's rarely discussed in marketing materials. The number of heater panels in a sauna matters, but where those panels are placed matters even more. A sauna with 8 panels crammed onto the back wall will heat your back effectively but leave your front, sides, and lower legs cold. A well-designed 6-panel layout with strategic positioning — back, sides, calves, feet, and front — will produce a significantly better, more even sweat session.
The goal of infrared heating is even, consistent radiant coverage around your entire body. When panels are positioned to target all major body zones, your core temperature rises more efficiently, you sweat more uniformly, and the therapeutic benefits are distributed across your whole body rather than concentrated on whatever happens to be facing the nearest panel.
This is one of the reasons brands like Finnmark Designs have earned a premium reputation. Their saunas use multi-directional heater placement with a combination of Spectrum Plus™ short-wave infrared heaters and Spectrum Carbon 360° long-wave panels, delivering 360-degree coverage that outperforms saunas with more total panels but worse positioning. Dynamic Saunas and Maxxus models also position panels across the back, sides, under the bench, and on the floor for full-body coverage.
How to avoid this mistake: Before buying, look at the heater layout — not just the heater count. Check how many panels cover the back wall, whether there are side panels, whether there's under-bench or floor-level heating, and whether any front-facing heat is included. Our infrared sauna buyer's guide breaks down heater layouts across all the major brands and explains what to look for in detail.
6. Falling for Marketing Buzzwords Without Checking the Specs
The infrared sauna industry is flooded with marketing language designed to sound impressive without actually meaning much. Terms like "medical grade infrared," "therapeutic carbon technology," "advanced nano-carbon heaters," and "clinical-strength detoxification" get slapped onto product listings with no standardized definitions behind them. Two saunas using identical heating panels can be marketed with completely different buzzwords depending on who's selling them.
"Full spectrum" is a term that deserves particular scrutiny. While legitimate full spectrum saunas from brands like Dynamic, Peak Saunas, and Finnmark genuinely include near, mid, and far infrared emitters, some lower-quality manufacturers use the term loosely for saunas that technically produce a narrow range of wavelengths outside the standard FAR band — but nowhere close to the broad, intentional coverage that a true full spectrum sauna delivers.
Certifications, on the other hand, are not buzzwords — they're third-party verifications worth looking for. ETL, CETL, and CE certifications indicate that a sauna has been tested and meets specific safety and performance standards. UL listing on individual components (like Finnmark's UL-listed Spectrum Plus™ heaters) provides additional assurance of quality engineering. The ISO 9001 quality control program is another meaningful indicator that a manufacturer follows documented production standards.
How to avoid this mistake: Focus on verifiable specs rather than marketing language. The metrics that actually indicate sauna quality are: maximum operating temperature and how quickly the sauna reaches it, EMF readings at sitting distance with the testing methodology specified, heater type and placement, wood species and whether adhesives or laminates are used, safety certifications (ETL, CETL, CE, UL), and warranty terms. If a product listing is heavy on buzzwords but light on these specifics, that's a red flag. Browse our complete infrared sauna collection — every product page on our site includes detailed specs, heater layouts, EMF ratings, and certification information so you can compare apples to apples.
7. Not Considering Maximum Temperature and Heat-Up Time
Many infrared sauna shoppers focus on features like Bluetooth speakers, chromotherapy lighting, and aesthetics while overlooking two of the most important performance specs: maximum operating temperature and heat-up time. These two factors directly determine the quality and intensity of every single session you'll ever have in the sauna.
Most infrared saunas on the market top out at 140°F, which is perfectly adequate for a comfortable, therapeutic session. Many users set their sauna between 120–130°F and get an excellent sweat. However, if you're after more intense sessions — particularly if you're interested in triggering heat shock proteins (HSPs), which are associated with cellular resilience, recovery, and deeper therapeutic benefits — you'll want a sauna capable of reaching higher temperatures.
Finnmark Designs has engineered some of the only infrared saunas on the market that reach up to 170°F, giving you significantly more headroom for intense sessions when you want them. That extra 30°F of range might not seem like much on paper, but the difference in sweat output and perceived intensity between a 140°F session and a 165°F session is substantial.
Heat-up time matters because nobody wants to wait 90 minutes for their sauna to reach temperature. A well-insulated sauna with quality heaters should reach a comfortable sweating range (around 120°F) in 20–30 minutes from a room-temperature start. Reaching maximum temperature typically takes 40–50 minutes. Saunas that take significantly longer may have undersized heaters, poor insulation, or air leaks around the door and panel joints.
How to avoid this mistake: Check the maximum temperature and estimated heat-up times on the product page before you buy. If a sauna doesn't publish these specs, consider it a warning sign. Keep in mind that heat-up times are affected by the ambient temperature of the room where the sauna is installed — a sauna in a 55°F garage will take longer to reach temperature than one in a 72°F bedroom. For the highest-performing infrared saunas available, explore Finnmark Designs or browse our curated list of the best infrared saunas for home use.
8. Skipping the Warranty and After-Sales Support Research
An infrared sauna is an investment that you'll use multiple times a week for years. Heating elements, control boards, and wiring are all components that can potentially fail over the lifespan of the unit — and when they do, the difference between a manufacturer with strong warranty coverage and responsive customer support versus one that's impossible to reach is the difference between a quick, free repair and an expensive paperweight sitting in your spare room.
At minimum, look for a manufacturer that offers at least a 3–5 year warranty on heating elements and electronics. These are the components most likely to need attention over time. A 1-year warranty on the wood structure and radio/audio components is standard across the industry. Some premium brands go further — Finnmark Designs, for example, backs their saunas with comprehensive warranty coverage that reflects confidence in the build quality and longevity of their products.
Beyond warranty terms, research the manufacturer's reputation for actually honoring warranty claims. A 5-year warranty from a company that takes weeks to respond to emails is worth less than a 3-year warranty from a company that picks up the phone and ships replacement parts within days. Golden Designs, Inc. — the parent company behind Dynamic Saunas, Maxxus, and Golden Designs — operates out of a 100,000+ square foot facility in Ontario, California with over 4,000 saunas in stock, meaning replacement parts and support are readily available domestically rather than shipped from overseas.
How to avoid this mistake: Before purchasing, read the warranty documentation carefully and check reviews specifically mentioning customer service experiences. Buy from an authorized dealer who can facilitate warranty claims directly with the manufacturer. At Haven Of Heat, every sauna we sell includes the full manufacturer's warranty, and our team provides direct support before and after your purchase — call or text us at (360) 233-2867 with any questions.
9. Forgetting About Electrical Requirements and Installation Logistics
One of the biggest advantages of infrared saunas over traditional saunas is that most models are plug-and-play — no electrician, no dedicated circuit, no 240V wiring. But "most" doesn't mean "all," and overlooking electrical requirements before your sauna arrives can lead to frustrating delays or unexpected costs.
The majority of 1–2 person infrared saunas operate on a standard 120V/15 AMP household outlet. You plug them in and they work. However, larger models — particularly 3-person saunas and some high-output 2-person models — may require a dedicated 120V/20 AMP outlet. This is a specific outlet type that a licensed electrician can install, usually for $150–$300 depending on your location and existing wiring. It's not a major expense, but it needs to be planned for before the sauna arrives, not discovered after it's sitting in your living room.
Some important electrical details that catch buyers off guard: infrared saunas should not be plugged into GFCI (Ground Fault Circuit Interrupter) outlets, which are the outlets with the "test" and "reset" buttons commonly found in bathrooms and kitchens. GFCI outlets can trip during sauna operation and interrupt your session. The sauna should be plugged directly into a non-GFCI outlet on a dedicated circuit — meaning nothing else is drawing power from that same circuit while the sauna is running. Extension cords and power strips should never be used.
Beyond electrical, think through the physical logistics of getting the sauna into your home. Infrared saunas ship curbside on a pallet, typically in 1–2 boxes weighing 150–300+ lbs each depending on the model. You'll need to get those boxes from the curb to the installation location, which may involve navigating stairs, doorways, and tight hallways. Measure your doorways and pathways in advance and confirm the box dimensions fit.
How to avoid this mistake: Check the electrical requirements on the product page before ordering. If a model requires 20 AMP service or a dedicated circuit, schedule an electrician before your delivery date. Confirm that your installation space has a non-GFCI outlet within cord reach of where the sauna will sit. Measure doorways, stairways, and hallways against the shipping box dimensions listed on the product page. Assembly itself is straightforward — most infrared saunas use a clasp-together or panel-locking design that two adults can complete in about an hour with nothing more than a screwdriver.
10. Buying from an Unauthorized Dealer or Unverified Marketplace Seller
This mistake can void your warranty before you even open the box. Sauna manufacturers maintain authorized dealer networks for a reason — authorized dealers receive genuine factory-direct products, honor full manufacturer warranties, and have direct lines to the manufacturer for support, replacement parts, and warranty claims. Unauthorized sellers, Amazon third-party storefronts, and random marketplace listings may offer lower prices, but the savings come with significant risks.
Products from unauthorized sellers may be refurbished units sold as new, older inventory with outdated components, units that were damaged during shipping and resold, or gray market products imported outside the manufacturer's official distribution channel. In any of these cases, the manufacturer is within their rights to deny warranty coverage because the product wasn't sold through an authorized channel. You save $200 upfront and lose $2,000 in warranty protection.
Unauthorized sellers also can't provide the same level of product knowledge, installation guidance, or after-purchase support that an authorized dealer can. If you have questions about heater placement, electrical requirements, optimal session protocols, or troubleshooting an issue six months after purchase, an authorized dealer has the expertise and manufacturer relationship to help you directly.
How to avoid this mistake: Buy from an authorized dealer with a direct relationship to the manufacturer. Haven Of Heat is a top authorized dealer for every brand we carry — including Dynamic Saunas, Finnmark Designs, Golden Designs, and Maxxus Saunas. Every sauna ships factory-direct with the full manufacturer's warranty, free shipping, and financing options through Shop Pay. We also accept HSA/FSA funds on qualifying products, which can save you 30–40% using pre-tax dollars.
Bonus Tips: Additional Factors Worth Considering Before You Buy
Beyond the ten mistakes above, here are a few more considerations that can significantly improve your buying decision and long-term satisfaction.
Think About Red Light Therapy Integration
Many premium infrared saunas now include built-in red light therapy panels that emit visible red light (typically 630–660nm) for skin health, collagen production, and cellular recovery benefits. This is a separate technology from infrared heating — red light therapy (photobiomodulation) has its own body of research supporting skin rejuvenation, wound healing, and muscle recovery. If these benefits appeal to you, choosing a sauna with integrated red light therapy means you get both technologies in a single unit rather than purchasing a standalone red light device separately. Browse our red light therapy sauna collection to see models with this feature built in.
Consider a Hybrid Sauna If You Want Both Worlds
Can't decide between infrared and traditional? You don't have to. Hybrid saunas combine full spectrum infrared heating with a traditional electric sauna heater and rocks in a single cabin, giving you the flexibility to use infrared, traditional dry heat, steam (by ladling water over the rocks), or any combination depending on your mood and wellness goals that day. Finnmark's Trinity™ line is the only 3-in-1 combination sauna in the U.S. — combining infrared, traditional steam, and red light therapy in one unit. Explore our hybrid sauna collection if maximum versatility is what you're after.
Don't Forget Accessories
A great sauna session isn't just about the sauna itself. Quality sauna accessories — backrests, cushions, thermometers, aromatherapy options, and cleaning supplies — enhance comfort, extend the lifespan of your sauna, and make every session more enjoyable. Budget for a few key accessories alongside your sauna purchase rather than treating them as an afterthought.
Explore Contrast Therapy
Pairing infrared sauna sessions with cold plunge therapy — known as contrast therapy — has become one of the most popular wellness protocols for recovery, circulation, and immune support. If you're interested in building a complete wellness routine, check out our contrast therapy collection which includes both saunas and cold plunges designed to work together.
Final Thoughts
An infrared sauna is a purchase you'll use hundreds or thousands of times over its lifespan. The mistakes outlined above are entirely avoidable with a little upfront research, and the payoff for getting it right is years of consistent, high-quality wellness sessions in the comfort of your own home.
If you're still narrowing down your options, our comprehensive infrared sauna buyer's guide ranks the top brands and models, our full spectrum infrared sauna guide dives deep into multi-wavelength technology, and our Sauna Selector Tool can match you with the right sauna in seconds based on your space, budget, and goals.
Have questions? Our team of sauna experts is available by phone or chat — call or text us at (360) 233-2867. We're here to help you avoid every mistake on this list and find the perfect infrared sauna for your home.
Frequently Asked Questions
What is the most important spec to check when buying an infrared sauna?
Heater quality and placement are the single most important factors. The heating system determines the intensity, evenness, and therapeutic effectiveness of every session. Look for saunas with multi-directional heater coverage (back, sides, under-bench, and floor-level panels), low EMF ratings at sitting distance, and a maximum operating temperature of at least 140°F. Beyond heaters, wood quality, construction integrity, and warranty coverage round out the top specs to evaluate.
Is full spectrum infrared worth the extra cost over FAR infrared?
It depends on your wellness priorities. FAR infrared saunas are excellent for deep core heating, heavy sweating, detoxification, and cardiovascular support at a lower price point. Full spectrum saunas add near and mid infrared wavelengths that target skin health, cellular repair, joint relief, and circulation at shallower tissue depths. If you want the broadest therapeutic coverage from a single unit, full spectrum is worth the investment. If deep sweating and relaxation are your primary goals, a quality FAR infrared model delivers outstanding results. Read our full spectrum vs. FAR infrared comparison for a detailed breakdown.
How much does it cost to run an infrared sauna?
Infrared saunas are highly energy-efficient. On average, using an infrared sauna five times per week for 30-minute sessions adds approximately $15–$25 per month to your electricity bill, depending on your local electricity rates and the specific model. Most 1–2 person infrared saunas draw 1,000–1,800 watts — roughly the same as a space heater or hair dryer.
Do infrared saunas require special ventilation or plumbing?
No. Infrared saunas require no plumbing, no drain, and no external ventilation system. Most models include built-in fresh air intake and exhaust vents. You simply need a flat, level surface, a compatible electrical outlet, and a few inches of clearance around the unit for airflow.
Can I place an infrared sauna in my garage?
Yes, you can install an indoor infrared sauna in a garage as long as it's fully enclosed and protected from moisture, rain, and direct sunlight. Keep in mind that infrared saunas heat up most efficiently when the ambient temperature is at least 65°F, so a sauna in an unheated winter garage will take longer to reach temperature. If you want a sauna specifically designed for weather-exposed outdoor environments, browse our outdoor sauna collection for models engineered to handle the elements.
How long does it take to assemble an infrared sauna?
Most infrared saunas from the brands we carry use a clasp-together or panel-locking design that two adults can assemble in approximately one hour. No special tools are required beyond a standard screwdriver for the door handle. The saunas come pre-wired, so electrical connections are plug-and-play — no electrician needed for standard 120V/15 AMP models.
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