Cold plunge, also known as cold-water immersion, is basically the opposite of a sauna—but similar to a sauna, still has purported health benefits. Experts say it can help improve stress, inflammation, sleep quality, and more, and that you don’t necessarily need to use a cold plunge daily to see these effects.
If you’re a nine-to-fiver with limited gym time, a home cold-plunge tub is appealing: It’s right there, no need for a gym trip, and it requires minimal time. Plus, after putting in your eight hours, who couldn’t use a quick de-stressing session? Read on to find out what our testers thought about Sun Home Cold Plunge Pro, a popular option on the market today, as well as what a cold plunge can do for you and who should skip it.
Sun Home Cold Plunge Pro
Capacity
Warranty
Power Requirements
- Our thoughts: This tub combines extremely cold temps, thoughtful design details, and a polished look that feels at home in a high-end gym or spa
- What it does: Cools up to roughly 150 gallons of water down to about 32–46 degrees Fahrenheit, with strong circulation, integrated filtration, and features
- Who it’s for: Folks willing to pay for a premium, permanent setup
- What makes it different: Combines true low temps and a powerful chiller with surprising comfort
- xtremely cold temps with strong circulation
- Spacious interior with comfortable reclined position and headrest
- Premium look and feel suitable for luxury spaces
- Very high price point versus other tubs
- Heavy and not realistically portable once installed
- Standard warranty only 1 year without paid extensions
Sun Home Cold Plunge Pro Specs
Our Experience with Sun Home Cold Plunge Pro
The Sun Home Cold Plunge Pro is “precision-engineered in Germany,” according to the company’s website, and has a temperature range of 32 to 55 degrees Fahrenheit. It even forms “thick glacier ice for a truly authentic ice bath experience.” This cold plunge tub also offers additional features, like a sanitization system and sterilization chamber plus a sediment filter. The tub is made of stainless steel, which the company says offers superior insulation and durability.
But why would someone choose to do a cold plunge, also known as cold-water immersion? We got insights from Raj Desai, MD, a sports medicine expert who is double board-certified in physical medicine and rehabilitation and interventional pain management. Dr. Desai says, “Cold-water immersion—cold plunge—can improve stress, inflammation, sleep quality and immune function. Evidence is currently emerging for metabolic and cardiovascular benefits. It can help improve insulin sensitivity, thus increasing metabolic benefits. There is also evidence of mental health benefits.”
And while current research shows that regular exposure is necessary for sustained benefits, even short, intermittent sessions can produce immediate effects, says Dr. Desai, explaining, “There’s research showing that repeated exposure—three times a week for four weeks—can improve sleep and cognitive performance.”
Our tester, Raven, tried the Sun Home Cold Plunge Pro. Here’s what she had to say.
What We Liked
Raven tried the cold plunge a couple of times, for about one minute each time. Here’s what she said about the experience.
- Durability (5 out of 5): The unit itself seemed very durable, with no issues reported.
- Ergonomics (4 out of 5): Raven noted, “There was a headrest included,” though she thought it could have been more comfortable.
- Overall experience (4 out of 5): The cold plunge had a “very deep tub,” said Raven, which was nice. And true to its name, the water was very cold—there was even some ice.
What We Would Change
While our tester’s overall experience was positive, there was one small drawback.
- Size: Even though the cold plunge had great depth, Raven said it felt “a little claustrophobic.” That said, we think this product is comparable in size to others that offer similar functionality, so folks who are comfortable with such spaces may not find it to be an issue.
Who It’s For & Who It’s Not For
A cold plunge may not be the right choice for everyone. Dr. Desai says, “First, for anyone deciding to try cold plunging, it’s imperative that they gradually acclimate to the cold water with progressive increases in duration as tolerance develops.”
Additionally, he adds, “Those who should not attempt cold plunges include individuals with cardiovascular disease, arrhythmias, uncontrolled hypertension, severe metabolic disorders, severe peripheral vascular disease, or unstable angina.”
Finally, Dr. Desai said that for adults over 50 years old, cardiovascular screening is critical. Adults 50 years old and older should obtain medical clearance and begin with a very brief exposure to cold water (30 to 60 seconds), increase time submerged gradually over two to three months, and exit the cold plunge tub immediately if they experience any chest pain, severe shivering, or confusion, says Dr. Desai.
Comparing Sun Home Cold Plunge to Other Cold Plunge Tubs
Frequently asked questions
How do I use a cold plunge tub?
First you should make sure you’re medically fit to use a cold plunge tub. We recommend speaking with a healthcare provider who can review any medical issues and advise whether using a cold plunge tub would be suitable for you. If you are a good candidate, consider starting with shorter durations and gradually increasing time in the cold plunge. Finally, be sure to exit the cold plunge tub if you experience the symptoms outlined below, like chest pain, severe shivering, or confusion.
Is the Sun Home Cold Plunge Pro any good?
Our tester reported that this cold plunge was highly durable, with a deep tub and headrest. It’s only suitable for one person so may feel cramped to some, but overall it received high ratings.
What are the negatives of a cold plunge?
According to Dr. Desai, there is a risk of cardiac arrythmia and cold shock response. “You’ll want to keep an eye out for prolonged shivering, confusion, slurred speech, chest pain, palpitations, or difficulty rewarming,” says Dr. Desai.
