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I have wanted a home sauna for years. Not because it's trendy. Not because everyone in the wellness space is talking about it. But because I genuinely believe that regular heat therapy is one of the most powerful, research-backed things you can do for your body — and I wasn't willing to compromise on the quality of what I brought into my home.
After doing what felt like an embarrassing amount of research, I landed on Heavenly Heat — and I haven't looked back once. This is my full review after my first sessions, and I'm already obsessed.
If you follow Kayla Barnes-Lentz (and if you don't, you should — she is genuinely one of my favorite voices in the longevity and women's health space and “the most measured woman on earth”), you already know she's been recommending Heavenly Heat for years. On her site, she says it plainly: "I have loved this brand for SO long! Heavenly Heat is the only sauna brand that I will use now."
When someone like Kayla — who has tested everything literally and refuses to compromise on toxin exposure — stakes her name on a product, I pay attention. She's also quoted directly on the Heavenly Heat site: "The last thing you want is to sit in a 'detox' sauna while inhaling toxic fumes or soaking in high EMF rays that are doing more harm than any benefit you're gaining from the sauna." Exactly. And that's exactly the problem with most saunas on the market.
We like
- The ONLY truly nontoxic sauna on the market — no glues, plywood, VOCs, or stains
- Ultra-low EMF/ELF levels — independently tested and verified
- Heats up incredibly fast (pre-heats to 115°F in ~15 min)
- Dual-mode: choose infrared OR traditional steam rock heat
- Beautiful chromotherapy lighting — easy, intuitive controls
- Handcrafted in North America since 1988 — built to last decades
- Smells like clean, pure wood — not chemicals
We don't like
- Premium price point (investment in your health, but it's significant)
- Large, heavy unit — requires dedicated space and planning (like all saunas)
- Traditional steam rock add-on requires electrician for 240V hookup (but all saunas require an electrician)
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Why the "Nontoxic" Thing is Not a Marketing Claim — It's the Whole Point
Here's something most people don't think about when they buy a sauna: when you heat up a sauna that's built with cheap plywood, wood glues, varnishes, and synthetic adhesives, you could be sitting inside a chamber that is off-gassing volatile organic compounds (VOCs) directly into your lungs — while your pores are wide open. You can read their VOC report directly on their site HERE.
The irony is almost darkly funny. You're trying to detox while inhaling toxins. And the vast majority of saunas on the market — including many very expensive, very well-marketed ones — are built exactly this way. In fact, industry experts estimate that about 95% of all saunas sold in the US are mass-produced in a handful of factories in China and simply rebranded with the same construction, same glues, same VOCs.
"Heavenly Heat uses no glues, adhesives, or materials that release harmful VOCs, ensuring an authentic detoxification environment."— Heavenly Heat Saunas
Heavenly Heat has been doing this differently since 1988, when founder Bob Morgan — one of the earliest voices in the industry to prioritize low toxicity and EMF testing — began building saunas specifically for people with chemical sensitivities. His philosophy was both simple and radical: if you’re trying to detox, the sauna itself should be as clean as possible. No glues. No plywood. No varnish. No stains. Just untreated, non-resinous Canadian hemlock and Canadian poplar, held together with stainless steel screws and tongue-and-groove joinery.
That same ethos still carries through today. As Co-Founder and CEO Warren Lentz puts it, “What really sets it apart is that it’s built from the ground up for ultra-low VOC materials, which is shockingly hard to find in this industry, and true low-EMF design. I use mine with my wife nearly every single day and it just feels cleaner and safer than anything else I've tried…”
When I step into my Heavenly Heat, it smells like wood. Clean, warm, fresh wood. No chemical smell whatsoever. That alone tells you everything.
The EMF Question — And Why Heavenly Heat Actually Answers It
Low EMF is one of those claims that gets thrown around constantly in the sauna space. Almost every brand claims it. Almost none of them back it up in a meaningful way.
Heavenly Heat's heaters are independently tested and verified for ultra-low electromagnetic field (EMF) and extremely low frequency (ELF) emissions by Primary Environmental, a third-party testing lab. They publish the results (watch the video on YouTube HERE). They don't just test the heaters in isolation; they test the entire cabin, because EMF can come from the wiring, not just the heaters. That level of rigor is essentially unheard of in this category.
"The heaters are tested to ensure low EMF/ELF. These are the cleanest and most powerful heating elements available, made specifically for use in this industry."— Sauna Talk, independent review
Garage Gym Reviews, whose team of certified personal trainers and nutrition coaches tested the Heavenly Heat 2-person sauna extensively, noted that what distinguishes the brand is its commitment to eliminating Bluetooth accessories, cable shielding, and not treating wood with stains or glue. "If you prioritize eco-consciousness and work to actively reduce your exposure to electromagnetic fields, this may be the right option for you," said their head of content. Their expert tester added that the price reflects the quality craftsmanship, especially given the Canadian hemlock wood and low-EMF heaters.
My First Session: What I Actually Experienced
I decided to start with the infrared heaters and save the traditional steam rock sauna for another day — and I was already blown away.
First of all, it heats up incredibly fast. The setup is beautiful and so thoughtfully designed. The footstool makes it extra comfortable, and the bench is the perfect height for actually relaxing instead of perching. I absolutely love the colored chromotherapy light options and how easy it is to cycle through them. The entire control system is intuitive — adjusting time and temperature takes seconds.
After my first session, I felt deeply relaxed. Genuinely calm in a way that felt almost cellular — like something in my nervous system had actually unwound. And I slept like a baby that night. Deep, restorative, wake-up-feeling-amazing sleep. That alone made me emotional about this purchase.
One of my favorite features is having both options — infrared heat and the traditional steam rock sauna — in one unit. It genuinely feels like a spa in my home. Whatever I need on a given day, I can access it.
What the Wellness Community Is Saying
This isn't just me gushing. The third-party validation for Heavenly Heat is extensive and consistent across communities that are notoriously hard to please.
"I spent way too much time researching before finally choosing Heavenly Heat. Their saunas are low EMF, non-toxic, and designed without glues, plywood, or anything that off-gasses — which was really important to me."— Customer review
"Finally pulled the trigger after following sauna content for a year. This isn't a mass-produced unit — it's truly handcrafted. Two months in and my sleep has improved dramatically. The Canadian hemlock construction makes such a difference in air quality."— Verified customer
"It's the only sauna I trust for my clients with MCS or autoimmune issues. No fumes. No EMF spikes. Just clean, deep heat."— Dr. J.S., Environmental MD
The brand has earned its reputation as the gold standard for toxin-free saunas among doctors, naturopathic physicians, environmental medicine practitioners, and longevity-focused wellness professionals. Independent review sites that have tested across dozens of brands consistently rank Heavenly Heat at the top — not just for construction quality, but for integrity: they don't run a referral program, they don't use high-pressure sales tactics, and they don't upsell you on gimmicky add-ons.
That credibility isn’t abstract — it’s lived. As Co-Founder and CEO Warren Lentz explains, “Running this company means I’ve tested nearly every sauna out there, and I keep coming back to our own outdoor combination sauna because it truly is the best of both worlds. You get that deep, detoxifying heat experience combined with everything modern recovery demands…all in one low-maintenance outdoor unit. What I’m most proud of is how we engineered it for extremely low VOCs by building without using wood adhesives and the faraday cage we put around the electrical for near zero EMF emissions. It’s not just marketing speak, it's actually one of the main reasons my wife and I became owners in the company.”
A Brand With Real Roots and Real Values
Heavenly Heat was founded in 1988 by Bob Morgan, who was among the very first people in the sauna industry to prioritize low toxicity and EMF safety. He started building saunas for people with chemical sensitivities who couldn't use anything else on the market. In 2023, Bob retired, leaving behind a company and a legacy that the new team — led by CEO Warren Lentz, former Yahoo and WME executive and avid biohacker who uses his own red light infrared sauna twice daily — has committed to carrying forward without compromise.
The current team includes a former health clinic operator who brings clinical scientific rigor to product development, a military veteran who engineered the first sauna with integrated therapeutic red light therapy, and a sauna specialist named John who has personally helped hundreds of customers find the right model. This is a company where real people answer the phone and actually know what they're talking about.
The saunas are hand-built in North America — not mass-produced in factories overseas. Assembly uses tongue-in-groove joinery and metal clasps. No power tools required. Heavenly Heat offers free shipping to the continental US, a 30-day return policy, and a 10-year warranty on the cabin with 6 years on heaters and electrical components. You can even use HSA/FSA funds for your purchase through their TrueMed partnership, which can save 30-40% depending on your tax bracket.
The Bottom Line
I don't say this about many products: this sauna has genuinely changed my life. And I mean that in the most practical, grounded, non-hyperbolic way. I feel more relaxed. I'm sleeping better. My body feels restored after sessions in a way I wasn't fully expecting. I'm excited to use it every single day.
But beyond how it makes me feel, the thing I keep coming back to is the peace of mind. I don't have to wonder what I'm inhaling in there. I don't have to worry about the wood off-gassing or the EMF exposure undermining the whole point of detoxing. That clarity — that certainty — is worth as much to me as the heat itself.
If you're serious about your health, if you've been on the fence, if you follow Kayla Barnes and have heard her talk about this brand — trust her. Trust the research. Trust the 35 years of reputation that Heavenly Heat has built in this space. This is the one.
