Product Review · Saunas & Cold Plunges · #6 Ranked
1stplunge 148-Gal Tub + Chiller Kit
148-gallon plunge tub with 1/3 HP chiller and filter · Reviewed by Katie · amazon.com live, Sept 24 2026
Why it scored a 77
The 1stplunge kit is the cheapest way here to get chilled water without ice. For $449.00 you get a 1/3 HP chiller rated to 42°F, a 148-gallon insulated tub, a 20-micron external filter, a submersible pump and insulated hoses, which is why Value scores 90 and Features 84. The catch is confidence. Reliability sits at 70 and Satisfaction at 82 because 4.3 stars rests on only 56 ratings, and the soft PVC tub is not in the same class as the Frozin. Warranty is the lowest factor at 55 for 1 year.
What you're getting
- 1/3 HP chiller, cools to 42°F, rated for 24/7 use
- About 40 dB running noise (maker claim)
- 148-gal oval tub: 7-layer PVC, Oxford fabric, EPE foam
- 20-micron external filter with replaceable cartridges
- Submersible pump and insulated hoses included
- 110V chiller power
- Chiller and tub ship in two separate boxes
- Only 56 ratings; soft tub, 1-year limited warranty
ViperScore breakdown
At a glance
- 148 gal, chiller to 42°F
- 1/3 HP, 20-micron filter
- 1-year limited warranty
- Price$449.00
- Tier148-gallon plunge tub with 1/3 HP chiller and filter
- Category rank#6 of 10
Should you buy the 1stplunge 148-Gal Tub + Chiller Kit?
The 1stplunge 148-Gal Tub + Chiller Kit is for a first-time plunger who wants chilled water daily and cannot justify four figures. At $449.00 it ranks #6 of 10 in our Saunas & Cold Plunges category. If you want a hard insulated tub and colder water, the Rezvani Frozin 400 + Chiller reaches 37°F for $1,949.99. If you will use ice, the AudaciaGo XXL Inflatable Plunge is $345.95.
Where it earns its score
- Chiller in the box. At $449.00 it costs less than the tub-only Frozin 400 and still gets water to 42°F with no ice.
- Complete kit. Filter, pump, hoses and valves are included, so there is nothing else to buy before the first fill.
- Filtration. A 20-micron external filter with replaceable cartridges catches hair and debris.
- Room to sit. The 148-gallon oval tub holds more water than the 100-gallon Frozin 400.
What to know first
- Warranty is the lowest factor at 55. It is a 1-year limited warranty from a young brand with 56 ratings.
- Check with your doctor first. If you have a heart condition, are pregnant or take medication that affects heat or cold tolerance, talk to your doctor before any cold plunge.
- Plan the power. The chiller is a 110V unit built to run 24/7; give it a dedicated GFCI outlet rather than an extension cord.
Our verdict
The 1stplunge 148-Gal Tub + Chiller Kit scores 77, a Fair Buy ranked #6, on Value (90), Features (84) and Satisfaction (82). Its 1-year warranty (55) and 56-rating history keep it out of Good Buy range. Buy it if you want chilled water on a budget. For a sturdier build, the Rezvani Frozin 400 + Chiller (79) costs about $1,500 more.
Rezvani Frozin 400 + Chiller
Questions buyers ask
Does the 1stplunge cold plunge kit need ice?
No. The included 1/3 HP chiller cools the water to as low as 42°F.
What comes in the 1stplunge kit?
A chiller, 148-gallon tub, 20-micron external filter, submersible pump, insulated hoses and valves, shipped in two boxes.
What warranty does 1stplunge offer?
A 1-year limited warranty, per the listing.
Ready to check it out?
1stplunge 148-Gal Tub + Chiller Kit · ViperScore 77 · Fair Buy · $449.00
How the other 9 saunas & cold plunges scored
86Dynamic Saunas Andora 2-Person
84Dynamic Saunas Elite 1-Person
84Dynamic Saunas Heming 2-Person
83Lifepro RejuvaWrap Sauna Blanket
79Rezvani Frozin 400 + Chiller
76AudaciaGo XXL Inflatable Plunge
76Rezvani Frozin 400 Tub
75The Cold Pod 85-Gal Tub
70SereneLife SLISAU30BK Sauna Tent
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