Share This



 

Hot Tub Vs Sauna

12 Minute Read


Many people seek wellness through the power of heat — whether in water, such as in a hot tub, or through air, such as in a dry sauna. Hot tubs and saunas both offer relaxation, stress and pain relief and ease of muscle tension through the use of heat. If you’re looking to compare hot tub vs. sauna — which is better for different needs, this article is intended to help you do just that and help you decide which might suit your specific needs and desires.


This article will cover the basics of what a hot tub is, what a sauna is, what each can offer you and the wellness benefits of each. It will also explore the physiological responses your body experiences during heat therapy and how both hot tubs and saunas can contribute to improved health. It will also tackle the question, “Which is better for different needs?” Finally, if you’re on the fence about whether a hot tub or a sauna will be right for you, this article also includes some tips to help you narrow down your decision. By the time you finish reading this article, hopefully you will feel informed and confident about your decision when it comes to the “hot tub vs. sauna” comparison. Read on to learn more about how hot tubs use the power of water to provide you with health benefits as well as how saunas use hot air to ultimately do the same.


What is a hot tub?

The Merriam-Webster Dictionary defines a hot tub (also referred to as a spa) as “a large tub of hot water in which bathers soak and usually socialize.” While hot tubs are certainly a great place to soak and socialize, there are many additional cited health benefits beyond enjoyment. For example, a study titled “Hot Water and Healthy Living: The Science of Hot Water Immersion: How it Promotes Healthy Bodies, Hearts, Minds and Lifestyles” by Jonathan B. Smith, Ed.D., a professor in the Department of Health and Physical Education at the Indiana University of Pennsylvania in partnership with the National Swimming Pool Foundation® explores the power of warm water immersion and its health benefits — including healing, heart health, relaxation and even mental health.


Different hot tub models may offer varying hot tub benefits and user experiences, with features that can influence maintenance, comfort, and the effectiveness of wellness routines.


When it comes to healing specifically, the report states that “water immersion helps in the healing of muscles and/or joint injuries” in the following ways:


-Increases circulation, improves blood flow to muscles


-Water-exerted pressure can reduce swelling such as in the ankles and feet


-Buoyancy of water reduces the amount of weight on our joints, resulting in feeling lighter in water


-Increases joint mobility, reduces joint stiffness and increases flexibility and range of motion


-Hot tubs provide gentle hydrostatic pressure and warmth, which can be especially helpful for individuals with joint issues or arthritis.


-Mitigation of delayed onset muscle soreness (DOMS) by increasing blood flow and oxygen delivery to fatigued muscles


Furthermore, the study explores the benefits of hot water as it relates to heart health, stating: “During immersion, the water exerts pressure on all parts of the body, including the arteries and veins that carry blood throughout the body. The water’s pressure on our legs and arms pushes blood toward the chest cavity, increasing blood flow to the heart by about one third (33 percent). Since more blood is being pushed to our heart, it adjusts by stretching… the heart is working harder and more efficiently, like it does when we exercise. The arteries and veins dilate to carry more blood. Blood moves more easily through the body and circulation may be improved.” Hot tubs can effectively raise core temperature due to water immersion preventing heat loss through sweat, making increasing body temperature and raising core body temperatures a key factor in the health benefits of hot tubs.


In an article titled “Benefits of Hot Tubs” featured on the Cleveland Clinic’s website, integrative medicine physician Irina Todorov, MD, shares her take on similar heart health benefits of using a hot tub. In the article, she says, “A hot tub doesn’t replace the need for a heart-healthy diet and regular exercise… But using a hot tub in addition to those measures could be beneficial for your heart health.”


She also touts other potential benefits of using a hot tub including lowering your blood pressure by widening your blood vessels; improving your sleep due the muscle-relaxing, mood-boosting effects of hot water; decreasing depression symptoms and helping relieve stress; and managing your muscle aches. Similar to the “Hot Water and Healthy Living” report, Todorov states that “a hot tub soak makes sore, tired muscles feel better because:


•Heat increases blood flow and helps loosen tense muscles.

•Buoyancy (floating) in water takes pressure off joints.

•Immersing your body in water could help prevent muscle damage from exercise.”


She also notes that hot water “is a good alternative to over-the-counter pain relievers for mild to moderate muscle pain.” Just the force of blood flow (hydrostatic pressure) during hot water immersion contributes to vascular and immune health. These are all wonderful benefits, but it’s important to note some safety tips for hot tub use.


In studied heat therapies, researchers often collect blood samples before and after hot tub sessions to measure immune signaling molecules, such as cytokines, and assess physiological responses to heat exposure. Both hot tubs and saunas can stimulate the immune system by improving circulation and reducing stress levels. Hot water immersion in hot tubs can lower blood pressure and stimulate the immune system, contributing to overall health.


What is the ideal temperature of a hot tub?

While there is plenty of research supporting the fact that hot water is healing for the body, physically and mentally, it is also important to use a hot tub safely. The heating method of hot tubs—hot water immersion—makes them particularly effective at increasing core temperature. The U.S. Consumer Product Safety Commission states hot tub water temperatures should never exceed 104 degrees Fahrenheit. The source adds: “A temperature of 100 degrees is considered safe for a healthy adult.”


Hot tubs can effectively raise core body temperature because water immersion prevents heat loss through sweat, making this heating method especially efficient. Increasing core body temperature is a key factor in the health benefits of hot tubs, as it can improve blood flow, support immune response, and enhance sleep quality.


What is a sauna?

The Oxford Languages website defines a sauna as “a small room used as a hot-air or steam bath for cleaning and refreshing the body.” Sauna use is an activity used in Finnish tradition for thousands of years, mainly for the purposes of pleasure and relaxation. Whether you choose an indoor sauna or an outdoor sauna, the health benefits remain largely similar, offering versatility for different home environments. However, the Mayo Clinic Proceedings website) states, “Emerging evidence suggests that beyond its use for pleasure, sauna bathing may be linked to several health benefits, which include reduction in the risk of vascular diseases such as high blood pressure, cardiovascular disease, and neurocognitive diseases; nonvascular conditions such as pulmonary disease; mortality; as well as amelioration of conditions such as arthritis, headache, and flu.”


An article titled “Benefits of sauna bathing for heart health” on the UCLA Health website further supports the positive effects of sauna use on the heart. The article states: “Sitting in a sauna may be particularly good for your heart. The heat can raise your skin temperature and cause heavy sweating—just a short time in the sauna can produce a pint of sweat. As your body attempts to keep cool, your heart rate increases and may reach 100-150 beats per minute.” Saunas operate at higher temperatures, typically ranging from 150-195°F (65-90°C), and can reach up to 200 degrees Fahrenheit, which induces intense sweating and heat stress. This dry heat creates a more intense heat experience compared to hot tubs, and can lead to dehydration and skin irritation if proper hydration is not maintained.

hot tub, sauna, infrared sauna, sauna benefits, home sauna

With the increase in heart rate, bathing in a sauna causes blood vessels to open, which increases circulation and reduces stress levels — like the effects of low or moderate exercise. These physiological responses to heat stress, such as increased core body temperature and improved blood flow, contribute to cardiovascular recovery and promote the release of endorphins. The article lists additional benefits including:


-Positive effect on blood pressure


-Ability to lower total blood cholesterol, which can decrease risk of heart disease


-Improved cardiovascular respiratory fitness level, which can also decease risk of heart disease and death


-Lowered risk of heart disease


Saunas utilize dry heat, which is especially notable in a traditional dry heat sauna, creating unique physiological responses and a more intense heat stress effect compared to other modalities like hot tubs or far-infrared saunas. Saunas are ideal for intensive detoxification and mental clarity, and typically offer a more solitary experience, promoting quiet and personal reflection. They can also enhance mental health by alleviating symptoms of anxiety and depression.


Like regular soaks in a hot tub, routine sauna use has also been shown to decrease stress relief. In the article “Surprising Benefits of Sauna Therapy” on the U.S. News & World Report website, in addition to benefits similarly stated in other reports previously mentioned in this article including pain relief, improved cardiovascular health, decreased blood pressure and general relaxation, regular use of a sauna can help lower stress levels. Saunas require minimal maintenance compared to hot tubs, which need regular chemical balancing and filter cleaning.


The article states, “Feeling more relaxed contributes to a healthier body and mind, and you may just feel your stress melt away.” Expert Shawn M. Houck, a physical therapist with Physical Therapy Central in Yukon, Oklahoma, is cited in the article. According to Houck, “Plus, sitting in a quiet, calm environment can help provide a pause when you have whirlwind days.” Saunas typically promote intense detox and quiet contemplation, while hot tubs provide a gentler, hydrating experience.


Article author Vanessa Caceres adds: “Researchers continue to study the potential for sauna use to help decrease the incidence of colds, fight off depression and potentially even prevent dementia and Alzheimer’s disease.”


Another potential perk of sauna sessions is weight loss. However, this can likely be attributed to sweat and water loss. The article quotes Jayesh Tawase, a physical therapist and clinical director of special projects and outpatient Theradynamics in New York as saying: “It’s not a long-term or sustainable weight-loss method, but it can definitely be used in adjunct to your diet and exercise routine.”


What is the ideal temperature of a sauna?

According to the North American Sauna Society, there are four different types of saunas — traditional Finnish sauna, dry sauna, steam bath/steam sauna/Turkish bath and infrared room/health therapy room/infrared sauna. The ideal temperature for each varies. The heating method of saunas—using either dry or steam heat—raises core temperature and induces heat stress, which can stimulate immune function and improve blood flow. Sauna temperatures typically range from 160 to 200 degrees Fahrenheit. For example, the site states: “In order to guarantee the relaxing effects of a [traditional wood-lined Finnish] sauna, the temperature must be at least 150 degrees Fahrenheit, measured where sauna bathers sit.” In a steam bath on the other hand, temperature is controlled by a thermostat and typically less than 120 degrees Fahrenheit. The typical temperature of an infrared/heat therapy room ranges between 120-140 degrees Fahrenheit.


Operational differences between hot tubs and saunas

While both hot tubs and saunas are among the most beloved experiences for restoration and wellness, the way they envelope you in therapeutic warmth—and how your body responds—creates distinctly different journeys to well-being. Understanding these meaningful differences can guide you toward the experience that truly aligns with your wellness vision and daily life.


Hot tubs embrace you in soothing water that gradually raises your core body temperature. When you settle into those welcoming waters, the warmth surrounds every inch of your body, creating an environment where heat gently accumulates within you. This leads to a steady, comforting rise in your core temperature—something wellness researchers have discovered to be particularly powerful for enhancing circulation and easing blood pressure naturally. As warmth flows through you, your blood vessels open like pathways to restoration, allowing your heart to work more efficiently while melting away muscle tension and everyday aches. Studies tracking the body's response to hot water immersion reveal something remarkable—only this water-based experience produces a meaningful inflammatory response, marked by positive changes in immune activity and elevated wellness-supporting molecules. This natural response helps nurture your health, strengthen your body's defenses, and elevate your overall sense of well-being.


In contrast, saunas—whether traditional dry heat or modern far infrared models—surround you with heated air that gradually warms your body from the outside in. The dry, enveloping heat encourages the natural release of perspiration, your body's elegant way of maintaining balance and releasing what it doesn't need. While sauna experiences offer their own profound wellness gifts, including enhanced cardiovascular vitality, mental clarity, and deep stress relief, they may not raise your core temperature or boost circulation as dramatically as hot water immersion. Sauna wellness benefits shine particularly bright for those seeking stress release, joint comfort, and muscle recovery, though the intensity of dry heat can feel overwhelming for some, especially those who find high temperatures challenging.


Another meaningful distinction lies in how each experience nurtures your cardiovascular health. Hot tubs excel at enhancing circulation and naturally supporting healthy blood pressure, making them an exceptional choice for those focused on vascular wellness or managing gentle heart concerns and stable cardiovascular conditions. Regular hot tub experiences have been shown to deliver greater wellness benefits in these areas compared to sauna use. However, infrared saunas can also nurture health and vitality, especially for those who prefer a gentler, more gradual heat experience.


Ultimately, choosing between hot tubs and saunas comes down to what speaks to your soul, your comfort preferences, and your personal wellness journey. If you're drawn to raising your core temperature, enhancing circulation, and experiencing the profound comfort of warm water melting away muscle tension and joint discomfort, a hot tub may be your perfect wellness sanctuary. If you're called to the dry, embracing warmth of a sauna and love the purifying ritual of perspiration, sauna bathing—especially with an infrared sauna—can become a treasured part of your restoration routine.


Whatever path calls to you, always honor safety wisdom: listen to your body's signals, stay beautifully hydrated, and avoid use if you experience unstable chest discomfort or other health concerns. By understanding how hot tubs and saunas work with your body's natural rhythms, you can make a choice that truly serves you and embrace the profound wellness benefits these heat experiences bring to your everyday life.

hot tub, sauna, infrared sauna, sauna benefits, home sauna

Hot tub vs. sauna — which offers better health benefits for different needs?

When it comes to heart health, both hot tubs and saunas have similar benefits, according to an article titled, “Hot baths and saunas: Beneficial for your heart?” on Harvard Medical School’s Harvard Health Publishing website. The article states, “Done on a regular basis, both habits may also prevent heart attacks and strokes, according to several studies.”


Both hot tubs and saunas can also promote better sleep quality by inducing relaxation and calming the body.


In the article, Dr. Adolph Hutter, professor of medicine at Harvard Medical School, states: “The high temperatures in a warm tub or sauna cause your blood vessels to dilate, which lowers blood pressure. The volume of blood your heart pumps will also rise, especially in a hot tub. That’s a result of the pressure of the water on the body, which increases the heart’s workload.”


The article goes on to state that while both saunas and hot baths (or hot tubs) seem to be safe for people with stable heart disease and even mild heart failure, people with unstable chest pain (angina), poorly controlled high blood pressure, or other serious heart issues should avoid them. Individuals should consult with their physician before starting heat therapy or exercise, and users should be aware of their hydration levels before and after using hot tubs and saunas.


Both hot tubs and saunas have similar wellness benefits as listed above — including pain relief, stress relief, lower blood pressure, decreased risk of heart disease and other cardiovascular improvements. Regular use of hot tubs and saunas can contribute to weight management by providing a mild form of cardiovascular exercise. Both also provide a tranquil setting conducive to mental relaxation, making them appealing choices for post-workout recovery. Ultimately, when it comes to the question: “Hot tub vs. sauna — which is better for different needs?”, the answer is largely subjective.


While water specifically offers buoyancy, which can take pressure off the joints, and sauna usage may offer a slight weight-loss component, the effects of hot tub and sauna usage are pretty equal. When you are comparing hot tub vs. sauna, you might ask yourself which one you prefer. Or better yet, enjoy a double dose of those heat-propelled wellness benefits by enjoying both hot tub soaks and sauna sessions on a regular basis. While exercise is the primary nonpharmacological treatment for promoting health, heat therapy can be combined with exercise or serve as an alternative for those unable or unwilling to exercise. Combining heat therapy with exercise can enhance health benefits and support post workout recovery.


You might be surprised to discover that while the Jacuzzi® brand is most widely known as a luxury hot tub company, it also manufactures saunas for home use. In fact, both their hot tub collections and saunas feature some of the most beneficial and cutting-edge heat-centric therapies, including the use of Infrared and Red Light therapy. Jacuzzi® Infrared Saunas feature two different types of heaters to provide a comprehensive Infrared Therapy session. Jacuzzi® Infrared Saunas combine mica/carbon heaters that surround the sides and the back of the sauna which provide low EMF far infrared wavelengths with front-facing heaters that provide full-spectrum (near, mid and far) Infrared to deliver a comprehensive sauna session.


Developing hot tubs since the late 1960s, the Jacuzzi® company recently took the Infrared technology it had been using in its saunas and combined it with Red Light therapy in its new J-LX® Collection of hot tubs. For more than two decades, Jacuzzi® has been developing and refining heat therapy technologies, supporting the credibility and effectiveness of their products. With two distinct choices — the J-LX® model with open seating and the J-LXL® model, which features a lounger — the J-LX® Collection combines relaxation and rejuvenation through these technologies. Staying ahead of the curve when it comes to groundbreaking approaches to wellness, the Jacuzzi® brand is the first to bring its patent-pending Infrared and Red Light therapy to an underwater application through its latest family of hot tubs, the J-LX® Collection.


The first and only-of-its-kind patent-pending technology of Infrared and Red Light therapy in a hot tub, this type of soak allows you to rejuvenate your body while also relaxing. Featuring the FX-IR Therapy Seat, which combines full-back and neck hydromassage with Infrared and Red Light Therapy on your lower back, the Jacuzzi® J-LX® models deliver the most advanced hydrotherapy yet. This clinically proven technology makes wellness easy, effortless, and most importantly, safe.


Ultimately, when you are comparing a hot tub versus a sauna, you may want to ask yourself specifically what you intend to get out of the experience. Since the proven health benefits are quite similar for both, the choice can simply come down to preference. Naturally, heat is a common factor of both a hot tub and a sauna. However, you may feel more comfortable in hot bubbly water rather than a hot room — or vice versa. Another point to consider: Hot tubs tend to evoke socialization while getting your hydrotherapy. Hot tub games can further enhance the experience by combining fun, entertainment, and physical activity, offering additional opportunities for enjoyment and even cardiovascular exercise. On the other hand, a sauna lends itself to more of a solo or quiet scenario (though depending on the size, a sauna room can also be a social setting).


Due to the fact that the health benefits are similar, taking into consideration some of the differences between a hot tub and a sauna can help you determine which one might be best suited for your needs. As noted above, a hot tub offers the buoyancy of hot bubbly water with the addition of seating options and specialized jets that deliver hydromassage. A traditional Finnish sauna is typically a wood-lined room that is heated with an electric or wood-burning stove topped with rocks. Water can be poured over the hot rocks to create a steam experience.


If you’re looking to connect with nature as you unwind, a hot tub placed outdoors allows you to view your surroundings during a soak, while your view within a sauna is simply the interior of the unit itself. However, this enclosed sanctuary can provide some peaceful solitude, void of outside distractions.


Space may also be a determining factor. The area you have to dedicated to your future hot tub or sauna can also help you decide which one is right for you. You will also want to consider budget — including initial cost, installation and operating costs as well as routine maintenance (plus supply and repair costs). It is important to maintain proper hygiene in hot tubs to prevent skin infections, so regular cleaning and water care are essential parts of ongoing maintenance.


As you weigh the comparison of hot tub vs. sauna, which is better for different needs, simply determining your personal preferences can help you make a clear decision. Making a list of desires and what you hope to gain from your hot tub or sauna can help you narrow down your choice. It’s also a good idea to visit a credible hot tub dealer and or sauna showroom to see the various models in person. This way, you can get a better feel for size, seating and jet options (specifically for a hot tub) and features of each that may help sway your decision one way or the other.


Whether you decide on a hot tub or a sauna, it’s important to always consider quality. Look for a manufacturer and/or dealer that has been in business for some time and that has a respected reputation. While cost may be higher initially, you can’t put a price on the peace of mind of working with a credible dealer and a premium brand that is known for fine craftsmanship and quality products.

If you’re looking specifically for a Jacuzzi® product, a visit to your local dealer is an excellent way to familiarize yourself with the various models; to see, touch and even experience the products themselves; and to speak with a reputable dealer who can help you answer any further questions you may have.


Looking for a Jacuzzi® dealer in your area? Click here to find a dealer near you.


Disclaimer: All information, including pricing and product details, was accurate at the time of writing and may change without notice.


Medical disclaimer: This information is not intended to prescribe a particular diagnosis or course of action. We are not medical professionals. Please contact your GP or other medical professional for advice if you have any concerns about your current health or well-being.

Learn More With Our Hot Tub Buying Series

Unlock the secrets to the perfect hot tub with our exclusive email series. Get expert advice and tips right in your inbox. Subscribe now and take the first step towards finding your ideal hot tub.

Hot Tub Buying Series

ashley fields

About The Author: Ashley Field

Director of Training, Jacuzzi Group

Ashley Field has been with Jacuzzi Group since 2016, previously having worked for Discover Financial Services and Taco Bell. When she was initially contacted about an opportunity with Jacuzzi Group, she loved the idea of building... Read Full Bio