What Is the Downside to an Infrared Sauna?

The main downside to an infrared sauna is the heat itself: dehydration, lightheadedness, and overheating if you sit too long or skip water. Upfront cost, the floor space a cabin needs, electricity use, and extra caution for people with certain health conditions round out the honest tradeoffs worth knowing before you buy.

The short answer

The biggest downside to an infrared sauna is heat stress. Sessions raise your core temperature, so dehydration, dizziness, and fatigue are real risks if you stay in too long, sit at too high a setting, or do not drink enough water. People with heart conditions, low blood pressure, or who are pregnant face higher risk and should talk with a clinician first. Beyond health, the practical drawbacks are upfront cost, the floor space a cabin needs, ongoing electricity, and the wait while the unit heats up. Lower quality cabins can also produce higher EMF readings, though reputable brands engineer for low EMF. None of these are reasons to avoid infrared saunas outright. Used sensibly, with short sessions, steady hydration, and a quality cabin, most healthy adults tolerate them well. Knowing the tradeoffs helps you buy the right unit and use it safely from the first session.

Can an infrared sauna be bad for your health?

For most healthy adults, no. The Mayo Clinic reports no harmful effects in the available studies on infrared sauna use, and considers it generally safe when used properly. The problems show up when sessions run long or hydration falls behind.

Heat raises your core temperature and opens up blood vessels, which is part of how a sauna works. That same vasodilation can cause lightheadedness or a brief drop in blood pressure when you stand up. Sweating without replacing fluids leads to dehydration, and most post-sauna headaches trace back to that rather than the heat itself. Push a session past your tolerance and you can reach nausea, weakness, or heat exhaustion.

These effects are dose dependent. Short, well-hydrated sessions rarely cause trouble. Long sessions at maximum heat, especially for someone new to sauna use, are where the risk climbs. Healthline's review of infrared sauna dangers reaches the same conclusion: the risks are mostly tied to overuse and pre-existing conditions.

Do infrared saunas have an EMF problem?

This is the downside buyers ask about most, and the honest answer is that it depends on the cabin. Every electric heater produces some electromagnetic field. In well-built infrared saunas, EMF at the seat is engineered down to very low levels. Many reputable makers target what the industry calls ultra-low EMF, generally under 3 milligauss for the magnetic field measured at the seating position.

Older or budget cabins with unshielded heaters are a different story and can read higher near where you sit. The takeaway is not to avoid infrared saunas, but to buy from a brand that publishes its EMF testing and to favor low-EMF heater designs. If near-infrared and red light matter to you, our guide to saunas with red light therapy walks through how those wavelengths are delivered. If you want all three wavelengths in one cabin, our full spectrum infrared saunas combine near, mid, and far infrared.

Who should not use an infrared sauna?

Some people should be cautious or skip infrared saunas until they have medical clearance. Talk with your doctor before your first session if any of the following apply to you.

• Pregnancy: a raised core temperature can pose risks to fetal development, especially in the first trimester, so infrared saunas are generally not recommended during pregnancy.
• Heart disease, recent cardiac events, or unstable blood pressure: heat stress and vasodilation add load and can cause dizziness.
• Pacemakers or implanted metal devices: confirm with your cardiologist before use.
• Trouble sweating or sensing heat: including anyone taking medication that impairs heat regulation.

This is general information, not medical advice. Because heat affects people differently, a quick conversation with your own clinician is the safest way to decide if an infrared sauna fits your situation.

What are the practical downsides of owning one?

Set health aside and the remaining drawbacks are about cost, space, and routine. None are dealbreakers, but they shape which unit is right for your home.

Downside	What to expect	How buyers handle it
Upfront cost	Quality home infrared cabins commonly run from roughly $2,000 to $9,000 depending on size and features	Financing and HSA/FSA eligibility spread or offset the cost
Floor space	A one to two person cabin needs a dedicated corner; larger units need more	Measure first and use a portable or one person model in tight spaces
Electricity	Infrared draws less than traditional heaters but still adds to the power bill	Short, regular sessions keep running cost modest
Heat-up time	Cabins take roughly 10 to 20 minutes to reach temperature	Pre-heat while you change and hydrate
Maintenance	Wood needs occasional wiping; heaters last years but are not forever	Simple cleaning and good airflow extend lifespan

For a deeper look at running cost, our article on whether an infrared sauna is expensive to own breaks down the monthly numbers, and are infrared saunas worth it weighs the full value picture.

How do you avoid the downsides of an infrared sauna?

Almost every risk above is manageable with good habits and a good cabin. Use this short checklist:

1. Keep sessions to 15 to 30 minutes, and start at 10 to 15 minutes if you are new.
2. Drink water before and after, and skip alcohol beforehand.
3. Use a moderate temperature rather than the maximum, especially at first.
4. Step out at the first sign of dizziness, nausea, or a racing heart.
5. Buy a low-EMF cabin from a seller that shares its testing and warranty.
6. Get medical clearance if you are pregnant, have a heart condition, or use a pacemaker.

Choosing the right unit matters as much as how you use it. Our infrared sauna buying guide covers sizing, heater type, EMF, and warranty so you can compare cabins with clear eyes.

Do infrared saunas have downsides for your skin?

The heat and sweating that make a session feel good can also leave skin feeling dry, and people with heat-reactive conditions sometimes notice more redness afterward. Rosacea, melasma, and active eczema can all flare when your skin warms and flushes, since heat is a known trigger for each. This does not mean the sauna damaged your skin, only that the warmth brought a reaction to the surface that cooling and time settle down.

The fixes are simple. Keep sessions shorter and the temperature moderate, rinse with cool water afterward, and moisturize while your skin is still slightly damp to lock in water. If you have a diagnosed skin condition, start with a brief tolerance test and check with your dermatologist before making the sauna a regular habit. Most people find that sensible sessions leave skin feeling clean and refreshed rather than irritated.

Can medications make infrared sauna use risky?

Some everyday prescriptions change how your body handles heat, which is an overlooked downside worth raising with your own clinician or pharmacist. Diuretics and blood pressure medicines can deepen the dehydration and the drop in blood pressure that heat already causes, so dizziness on standing is more likely. Beta blockers can blunt the heart rate response that normally helps you shed heat, and stimulants add cardiovascular load.

Medicines that reduce sweating, such as some allergy and bladder drugs, make it harder to cool down, and a few antibiotics and acne treatments increase sensitivity to heat and light. Alcohol before a session belongs on the same list. None of these automatically rule out infrared sauna use, but they are reasons to hydrate carefully, keep sessions short, and confirm with a professional that the heat is safe alongside your specific medication.

Do infrared saunas have any long-term downsides?

For healthy adults who use one sensibly, there is no good evidence that regular infrared sauna use causes long-term harm, and the long-running research on sauna bathing actually points the other way, toward cardiovascular and recovery benefits. The honest long-term downsides are practical rather than medical. Heaters and electronic controllers wear out eventually, usually after many years, and a failed part on an out-of-warranty cabin is an out-of-pocket repair. Wood interiors need occasional care to stay clean and crack-free, and a unit kept in a damp or unventilated space can develop mildew over time. The one health caveat worth repeating is that heat is a daily stressor your body adapts to, so people with ongoing heart or blood pressure conditions should keep up with their clinician rather than assume years of use carry no individual risk. Buy a quality low-EMF cabin with a solid warranty, keep it dry and ventilated, and the long-term downsides stay small.

Infrared sauna downsides compared with a traditional sauna

Many buyers weighing the downsides are really choosing between infrared and a traditional Finnish sauna, and the drawbacks differ. A traditional sauna runs much hotter, often 150 to 195°F, which raises the heat-stress and dehydration risk and uses more electricity per session, but the intense heat and the option to add steam are exactly what some users want. An infrared sauna heats your body at a lower air temperature, so it is gentler and cheaper to run, but the milder heat feels less intense and the experience is drier with no steam. Traditional electric heaters draw more power and take longer to warm up; infrared cabins preheat faster but rely on heater panels whose EMF quality varies by brand. Neither is simply better. The right pick depends on whether you prioritize a hotter, more traditional session or a lower-temperature, lower-cost one. Our sauna buying guide compares the two heat types in more detail.

Frequently asked questions

Is it OK to use an infrared sauna every day? Many healthy adults use one daily with short sessions and good hydration. If you are new, start a few times a week and build up. Pay attention to how you feel and scale back if you notice fatigue or headaches.

What happens if you stay in an infrared sauna too long? Overstaying raises the odds of dehydration, dizziness, nausea, and heat exhaustion. The fix is simple: cap sessions at 15 to 30 minutes, hydrate, and leave early if you feel off rather than pushing through.

Are cheap infrared saunas safe? Some are, but budget cabins are where higher EMF, weaker materials, and short warranties tend to appear. Look for published EMF testing, quality wood, a real warranty, and support you can reach before deciding on price alone.

Do infrared saunas dry out your skin? A session can leave skin feeling dry because you sweat and lose water, and heat can briefly redden sensitive or rosacea-prone skin. It is usually temporary. Rinse with cool water, moisturize while damp, and keep sessions moderate, and most people find their skin looks clear and refreshed rather than irritated.

Is an infrared sauna safe if you take blood pressure medication? Often yes, but check with your doctor first. Blood pressure and diuretic medicines can add to the dehydration and the drop in blood pressure that heat causes, so hydrate well, keep sessions short, and stand up slowly. Your clinician can tell you whether the heat is safe with your specific prescription.

Can you get too much infrared sauna? Yes. More is not better past a point, and overuse mainly shows up as dehydration, fatigue, and lightheadedness rather than any lasting damage. Stick to 15 to 30 minute sessions, hydrate well, and give your body rest days, especially when you are starting out or using one daily.

Do infrared saunas have side effects the next day? If you overdo a session or skip water, you can feel mild dehydration, a lingering headache, or tiredness the following day. These usually trace back to fluid loss or staying in too long. Shorter sessions, steady hydration, and a moderate temperature prevent most next-day effects.

Are there downsides to using an infrared sauna for weight loss? The main downside is expecting too much. The drop on the scale after a session is water weight from sweating and returns once you rehydrate, so a sauna supports relaxation and recovery rather than fat loss on its own. Treat it as a complement to diet and exercise, and rehydrate fully afterward.

The bottom line

The downsides of an infrared sauna are real but manageable: heat related risks, upfront cost, space, and extra caution for certain health conditions. Pick a low-EMF, well-built cabin and use it sensibly and most healthy adults do fine. When you are ready to compare options, browse our infrared saunas. As an authorized retailer we offer free US shipping, financing, and HSA/FSA eligibility, and a real person on our team is glad to help you size the right unit. Reach out any time.