DEEP – DIVE THE RESEARCH
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Over 7000 Bought. |
Doctor Based - The ONLY sauna designed by doctors. Made to improve blood flow, reduce headaches and migraines, heal your muscles, and achieve absolute pain relief for a better night's sleep.
Limit 2 per customer: Limited quantities available. Any orders greater than 2 will automatically be refunded.
All of our saunas come with a 3 year warranty included FREE.
The price is heavily discounted for the month of June. Purchase now while prices are still low. Every 2 weeks the price will increase because our supplies are very limited. Enjoy the deals and call us at (818) 805-0026 with any questions you may have.

HANDCRAFT FROM SCRATCH
Comparison Table
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| Model | Medical Spring 2™ | Medical Spring 3™ | Medical Spring 4™ | Medical Spring 5™ | Medical Spring 7™ |
| Capacity | 2 people | 3 people | 4 people | 5 people | 7 people |
| Temperature Range | 50-104°F | 50-104°F | 50-104°F | 50-104°F | 50-104°F |
| Number of Jets | 49 | 31 | 29 | 65 | 100 |
| Hybrid Hot + Cold System™ | Hot + Cold | Hot + Cold | Hot + Cold | Hot + Cold | Hot + Cold |
| Jet Zone Control™ | Basic | Basic | Advanced | Premium | Ultimate |
| Independent Massage Pumps | 1 | 1 | 1 | 2 | 3 |
| Interior LED Lights | |||||
| Balboa Smart Control Panel™ | |||||
| Heavy Duty Acrylic Shell | |||||
| UV Water Treatment System | |||||
| Ozone Water Purification System™ | |||||
| Stainless Steel Jet Trim | |||||
| Silent 250W Circulation Pump | |||||
| Auto Air Escape | |||||
| Anti-Freeze Protection | |||||
| Water-Shortage Proetection | |||||
| Fully Adjustable Jets | |||||
| Dual Filtration Filters | |||||
| High-Density PU Foam Insulation | |||||
| ETL Listed & UL-Approved | |||||
| Maintenance-Free Cabinet | |||||
| Smart Temperature Control™ | - | ||||
| 24/7 Circulation Pump™ | - | ||||
| Clim8zone II Heat Pump Compatibility™ | - | ||||
| Energy Efficient Heating System™ | - | - | |||
| Premium Spa Insulation System™ | - | - | |||
| Enhanced Jet Power™ | - | - | |||
| Commercial-Grade Spa Construction™ | - | - | |||
| Ultimate Performance System™ | - | - | |||
| Precision Massage Zones | - | - | - | ||
| Reflexology Foot Therapy | - | - | - | ||
| Deep-Tissue Neck & Shoulder Massage | - | - | - | ||
| Full-Body Bubble Massage | - | - | - | ||
| Custom-Flow Air System | - | - | - | - | |
| Chromotherapy LED Lighting | - | - | - | - | |
| Reflexology Foot Therapy | - | - | - | - | |
| Ultimate Flow System | - | - | - | - | |
| Exterior Dimensions (LWH) | 76.8 × 55.1 × 29.7" | 78.7 × 63.0 × 34.6" | 82.7 × 66.9 × 33.5" | 86.6 × 86.6 × 37.8" | 90.6 × 90.6 × 37.4" |
| Watts | 8,375 W | 7,975 W | 7,975 W | 10,875 W | 13,075 W |
| Operating Voltage | 220–240V/60AMP GFCI | 220–240V/60AMP GFCI | 220–240V/60AMP GFCI | 220–240V/60AMP GFCI | 220–240V/60AMP GFCI |
| Required Wire Type | Hardwired,6 AWG Copper,90°C rated | Hardwired,6 AWG Copper,90°C rated | Hardwired,6 AWG Copper,90°C rated | Hardwired,6 AWG Copper,90°C rated | Hardwired,6 AWG Copper,90°C rated |
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Every detail engineered for therapeutic performance.
Six features you won't find combined in any other tub — designed alongside 48 doctors for daily use.
Balboa Smart Control System
While competitors rely on basic button controls, we've equipped our spas with the industry-leading Balboa Smart Control System — giving you precise, intelligent command over temperature, jets, and overall performance.
High-Flow Circulation & Water Power
Most spas can't maintain strong, even pressure across every jet. Ours can. Our high-flow pump system is built to push consistent, high-pressure water across every jet, every time — so every seat delivers the same powerful massage.
Deep Ergonomic Seating Design
Our contoured seats are precision-designed to support your body's natural curves, ensuring every jet hits exactly where it needs to. Built for comfort during long sessions, whether hot or cold, every seat feels like it was made specifically for you.
Targeted Foot Massage Jet
Your feet carry you through everything — they deserve the same attention as the rest of your body. While most spas ignore them completely, our dedicated foot jet delivers a continuous soothing massage that relieves tired, aching feet so you can soak in the relaxation.
Clean, High-Performance Water Filtration
Constant water maintenance is one of the biggest frustrations of owning a spa — draining your time as much as your energy. Our advanced filtration system handles it all for you, running continuous circulation and purification to keep your water crystal clear and fresh day after day, so your spa is always ready when you are.
Premium-Grade Build & Finish
A spa should look just as good in five years as it does on day one. That's why every detail of ours is crafted with premium-grade materials built to withstand daily use, resist wear, and maintain a clean, modern finish that keeps your space looking sharp for the long haul.
Interior Chromatherapy Lighting
Most spas stop at a single basic light. Ours goes further. Our premium interior chromatherapy lighting creates the perfect ambiance for any mood, bathing your spa in rich, vibrant color that enhances the entire experience and sets ours apart from anything else on the market.
The science is overwhelming.
The results are life-changing.
Every benefit below is drawn from published, peer-reviewed medical studies. This isn't marketing — it's decades of documented science.
+530%
Norepinephrine & Focus Surge
Cold water immersion at 57.2°F increases plasma norepinephrine by 530% — the neurotransmitter responsible for alertness, attention, and focus. The effect begins within minutes and lasts for hours after stepping out.
Srámek et al. · Journal of Applied Physiology · 2000 · head-out cold water immersion study
59%
Depression Symptom Reduction
59% of regular cold water immersion users reported a significant reduction in depressive symptoms. A brain fMRI study confirmed CWI shifts the positive-to- negative affect ratio from 1.75 to 3.0 — the threshold of psychological flourishing.
Yankouskaya et al. · Biological Psychiatry · 2023 · brain fMRI study (PMC9953392)
+40%
Brown Fat & Metabolic Rate
Cold exposure activates brown adipose tissue (BAT), increasing metabolic rate and improving glucose regulation. Your body burns calories generating heat — and the thermogenic effect continues for hours after each cold session.
Hanssen et al. · Journal of Clinical Investigation · brown adipose tissue activation
+250%
Dopamine — Lasting for Hours
Cold water immersion increases dopamine levels by 250% — and unlike the brief spike from stimulants, the elevation persists for hours. Better motivation, mood, and drive, triggered naturally by your tub every session.
Srámek et al. · J Applied Physiology · 2000 · plasma catecholamine response to cold immersion
+36%
Faster Sleep Onset
Hot water immersion 1–2 hours before bed accelerates sleep onset by 36% and significantly improves slow- wave deep sleep. The mechanism — core temperature drop triggering the brain's sleep signal — is one of the most reliable biological switches known to medicine.
Haghayegh et al. · Sleep Medicine Reviews · 2019 · 17-study systematic review
30–40%
Arthritis & Joint Pain Relief
Hot water reduces joint stiffness by 30–40% in arthritis patients. The Arthritis Foundation officially recommends hydrotherapy as a first-line treatment. Warm water buoyancy reduces joint loading by up to 90% compared to land-based therapy.
Arthritis Foundation · hydrotherapy clinical guidelines · supported by multiple RCT data
Cardiovascular Health & Longevity
The most comprehensive long-term research on passive heat therapy comes from Finland. In a landmark 20.7-year study published in JAMA Internal Medicine, researchers followed 2,315 middle-aged men and found a clear dose-dependent relationship: the more often they used heat therapy, the longer they lived.
A 2025 systematic review confirmed hot water immersion reduces systolic blood pressure by 6–7 mmHg for a full 24 hours after a single session. A 10 mmHg reduction is associated with a 20% reduction in major cardiovascular events.
- Reduces arterial stiffness — a key marker of cardiovascular aging
- Improves endothelial function comparable to exercise training
- After 8 weeks, cardiovascular improvements matched those of sedentary adults who began an exercise program
- Associated with 65% lower risk of Alzheimer's disease and 66% lower risk of dementia over a 20-year Finnish cohort
- Reduces CRP — the primary circulating inflammation marker
Mental Health & Mood Elevation
Cold water immersion triggers one of the most powerful neurochemical responses available without medication. Within minutes, the brain floods the body with norepinephrine and dopamine — the neurotransmitters at the center of attention, motivation, and mood.These elevations last for hours after you step out of the water.
A 2023 fMRI study demonstrated that cold water immersion shifts the brain's positive-to-negative affect ratio from 1.75 to 3.0 — crossing the threshold associated with psychological flourishing. Regular users show sustained reductions in depressive symptoms, anxiety, and chronic stress.
- 530% increase in norepinephrine — sharper focus and mental clarity for hours
- 250% increase in dopamine — sustained motivation and mood elevation
- Brain fMRI data confirms structural changes in emotional regulation after regular cold immersion
- 59% of regular users report meaningful reduction in depressive symptoms
- Used by elite athletes and military personnel as a core mental performance tool
Sleep Quality & Recovery
Hot water immersion in the evening is one of the most evidence-backed sleep interventions available. When your body exits warm water, your core temperature drops — sending a powerful biological signal to initiate sleep. Sleep researchers call this the "warm bath effect."
A 2019 systematic review of 17 studies found that a warm bath 1–2 hours before bed at 104 - 107.6°F for just 10 minutes significantly improved sleep onset, sleep quality, and slow-wave deep sleep — by accelerating the natural nocturnal drop in core body temperature.
- Accelerates sleep onset — falling asleep up to 36% faster in clinical trials
- Increases slow-wave (deep) sleep duration — the most restorative sleep stage
- Reduces nighttime waking and improves overall sleep efficiency
- Reduces cortisol levels — promoting calm before bed
- Hydrotherapy jets relax muscle tension — removing physical barriers to sleep
- Regular use associated with reversal of insomnia symptoms in multiple studies
Every Other Documented Benefit
Click any card to view the published research
Cardiovascular statistics drawn from Finnish sauna and passive heat therapy research. Cold water immersion statistics from clinical CWI studies. Consult your physician before beginning any thermal therapy routine.
Here is The Math
Why the Hot Spring 7™ is the best value in the lineup: At $24,999 for 7 seats it costs just $3,571 per person — the lowest per-person price of any model.
The Hot Spring 2 at $10,299 costs $5,150 per person and includes none of these. If three or more people will use it — the 7 is the obvious choice.
THE INVESTMENT CASE
$25,999 is the smart choice.
Most people who want year-round contrast therapy end up spending far more trying to piece together a solution that still doesn't match what the Icy Hot Spring 7™ delivers.
PER-PERSON VALUE
Seven People. One Investment.
$24,999 across 7 family members used 3× per week for 10 years works out to less than $0.50 per person, per session — for access to the world's most advanced home wellness spa. No gym membership, no spa club, no cold plunge membership comes close to that value.
HEALTH ROI
The Cost of Not Having It
One chronic health event — a cardiac episode, a series of physical therapy visits,ongoing sleep medication — can easily cost $10,000 $50,000. The Icy Hot Spring 7™ is preventive medicine. The peer-reviewed studies above show it works. This is the investment that pays you back
HSA / FSA ELIGIBLE
Tax-Advantaged Purchase
Because the Icy Hot Spring 7™ is designed for documented medical and therapeutic purposes, many customers use HSA or FSA funds toward their purchase. Call us for supporting documentation. 0% APR financing available — most approvals are same day.
HOW THE ICY HOT SPRING 7™ WORKS
Two powerful therapies. One extraordinary tub.
104°F
The Icy Hot Spring 7™ operates in two distinct therapeutic modes — Hot Mode
and Cold Mode. Switch anytime from the touchscreen. Most families use Cold Mode
from May through September and Hot Mode from October through April.
PERFECT FOR FALL & WINTER
Hot Mode
80°F – 1d4°F · 100 Hydrotherapy Jets Active
Set the Icy Hot Spring 7™ to Hot Mode and experience a full-body clinical-grade hydrotherapy session. The 100 precision jets target every major muscle group while heat therapy activates your cardiovascular and recovery systems.
- Precise temperature control from 80° to 104°F
- 100 active hydrotherapy jets for full-body massage
- All 7 seats fully functional with targeted jets
- 40% lower all-cause mortality with 4–7x/week use
PERFECT FOR SPRING & SUMMER
Cold Mode
50°F – 72°F (10°C – 22°C) · All 7 Seats Available
In summer, switch to Cold Mode and enjoy therapeutic cold water immersion — what elite athletes and longevity researchers call the single most powerful recovery tool available.No ice required. No separate unit. Just set the temperature and step in.
- Integrated chilling system — no ice bags needed
- Cools to 50°F and maintains temperature precisely
- All 7 seats available for cold immersion simultaneously
- UV + Ozone filtration keeps cold water crystal clean
WITHOUT THE ICY HOT SPRING 7™
- Hot tub unused 6 months a year Paying electricity to maintain a tub nobody touches insummer
- Cold plunge for one person Your family waits outside. The ritual never happens together.
- $450/month on wellness memberships Cryo clinics, spa clubs, physical therapy — costs that never end
- Poor sleep, stiff joints, high stress No consistent recovery practice means compounding health debt
- Seasonal health Hot therapy in winter. No therapy in summer. Half a year wasted.
- Wellness is a solo activity Nobody does it together. The habit never sticks.
WITH THE ICY HOT SPRING 7™
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Used every single day, all year Cold in summer. Hot in winter. Never covered and idle again.
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All 7 family members, simultaneously Everyone together. The ritual that actually becomes one.
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Under $0.50 per person per session Memberships cancelled. The spa pays for itself in under 2 years.
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36% faster sleep onset, documented Evening hot sessions. Better sleep within days. Every day.
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50% lower cardiovascular disease risk 4–7 sessions/week. The science is two decades of data.
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530% norepinephrine surge, every cold session Focus. Drive. Mood elevation that lasts for hours.
The only contrast therapy tub designed by doctors.
We worked with cardiologists, surgeons, physical therapists, pain specialists, and recovery doctors. Every temperature protocol and every feature is based on documented medical research — not marketing
Doctors contributed to this design
Cardiologists · Pain Specialists · Physical Therapists, Surgeons · 100+ years combined- Torque: Main terminal block (TB1) to 27–30 in. lbs.
- Access: Remove the cabinet panel opposite the spaTouch 3 screen to reach the Balboa control box
- Conduit entry: 26mm hole at the bottom of the corner skirt panel closest to the box
- Bonding: Use the external bonding lug with #8 AWG solid copper to the spa's common bonding grid
- HiPot testing: Disconnect the slip terminal (green wires) from Port J11 before testing — reconnect after
- Power shedding: The 5.5kW heater auto-disables when 2+ high-speed massage pumps run, keeping draw within the 60A breaker limit
The information on this page is for general informational purposes only and is not intended as medical advice. The Icy Hot Spring 7™ is a wellness product, not a medical device, and is not intended to diagnose, treat, cure, or prevent any disease. Individual results vary. Always consult your physician before using a hot tub or cold plunge, especially if you have any medical condition, are pregnant, take prescription medication, or are caring for a child. All electrical work must be performed by a licensed electrician in accordance with the National Electric Code (NEC) and local regulations.
Get your Icy Hot Spring 7™ today.
Jump back to the top, pick your Icy Hot Spring 7™, and start feeling better this weekend — deeper sleep, faster recovery, and the contrast therapy your body has been missing. No long wait, no complicated setup.
Technical Specifications
Built different.
Spec'd different.
Every number below reflects a medical engineering decision. When 48 doctors sign off on a spec sheet, the result looks different from what accountants build.
"We reviewed every major hot tub brand's specifications before designing the Icy Hot Spring 7™. Then we built it the way doctors would not the way margins would"
- Medical Saunas Engineering Team
Four reasons there's
zero risk to ordering today.