Cold plunge and sauna buying guides, with the prices shown.
Pick a tub, chiller or sauna by what it costs to buy and to run. Every number comes from a published spec, manual or listing, and the math is on the page.
Cold plunges and chillers
Tubs, chillers and the water care that keeps them running, priced from published specs.
Saunas
Barrel, cabin and infrared saunas: what fits your space, and what they cost to run.
The guides
Cold plunges
Best Cold Plunge Tubs Under $1,500 (2026)
What $1,500 buys in a cold plunge tub in 2026, with or without a chiller: the specs that matter and the cheap tubs that disappoint in year two.
7 min
Inflatable vs Hard-Shell Cold Plunge: What You Give Up
Inflatable vs hard-shell cold plunge, spec by spec: where they really differ, and why insulation, not price, should decide which you buy.
7 min
How to Keep Cold Plunge Water Clean: Filter, Sanitize, Test
Cold plunge water care that works: the filter, sanitizer and testing routine that stretches a drain from weekly to every 6-8 weeks.
7 min
Best Cold Plunge Tub 2026: Buy the Tub and Chiller Apart
Cold plunge tubs priced by class: inflatables $79-399, barrels $1,035-1,575, all-in-ones $5,490+. Why a tub plus a separate chiller wins.
9 min
Best Cold Plunge Under $1,000 (With a Real Chiller)
No insulated hard-shell tub sells under $1,000, but a complete chilled cold plunge does. The under-$1,000 build, priced line by line.
8 min
Best Cold Plunge Under $500: Cheapest Setups That Work
Under $500, a 5-layer inflatable at $79-399 is the buy. Ice runs $156-260 a year at weekly use and $1,095-1,825 daily. Here is the crossover.
8 min
Chest Freezer Cold Plunge: Size, Cost and Risks
A 7 cu ft chest freezer holds 52 gallons, since one cubic foot is 7.48. The volume math, the refrigerant lines in the walls, and when it's worth it.
9 min
Stock Tank Cold Plunge: Size, Cost and Chiller Math
A stock tank cold plunge, priced: the tank is the cheapest part. At 15-20 BTU per gallon, the big cheap tank costs about $1,300 more to cool.
8 min
Indoor Cold Plunge for Apartments and Small Spaces
An upright plunge loads ~200 lb per square foot, far past the 30-40 psf most floors are built for. What fits an apartment, and what to skip.
8 min
Cold Plunge Temperature: How Cold Should It Be?
The ideal cold plunge temperature as an equipment answer: 45-55°F. What each degree costs in BTU, why 40°F costs more, and which chillers get there.
7 min
Chillers
Cold Plunge Chiller Specs: The One Number That Matters
Most 'my plunge won't get cold' complaints trace to one chiller spec the marketing buries. How to read a cold plunge chiller spec sheet.
6 min
Best Cold Plunge Chillers of 2026, Ranked by Use
The best cold plunge chiller depends on how you plunge. Ranked by use case: solo daily, two users, budget, hot garages and the lowest electric bill.
8 min
What Size Chiller for a Cold Plunge? The BTU Math
What size chiller your cold plunge needs: gallons x 15-20 BTU. The math step by step, a tub-size lookup table, and when to round up.
7 min
Cold Plunge Electricity Cost: The Real Monthly Bill
How much electricity a cold plunge uses: watts x hours x your rate, published wattage for every chiller class, 2026 rates, and five ways to cut it.
8 min
1/2 HP vs 1 HP Chiller for an Ice Bath (and 1/4 HP)
HP rates the motor, not the cold. Published BTU, watts and amps for 1/4, 1/2 and 1 HP chillers, the pulldown math, and who needs the big one.
8 min
Best Budget Ice Bath Chiller Under $700 (2026)
Dedicated plunge chillers start near $1,950. Under $700 you're buying aquarium-class units. The verified prices, and who the budget pick fits.
7 min
Cold Plunge Chiller and Filter Setup for 8-Week Drains
The cold plunge filter stack that stretches drains to 8 weeks: a 20-micron cartridge, inline ozone, a peroxide residual and a rinse-first habit, priced.
7 min
DIY Cold Plunge Chiller vs Purpose-Built: Full Cost
Assembled, a 1/2 HP DIY cold plunge chiller returns 3.4-4.3 BTU per dollar against 3.8 for a purpose-built unit. Where DIY actually wins.
8 min
PlungeChill by the Numbers: The BTU They Don't Publish
PlungeChill is a paid partner held to our spec test anyway: their own cooling rates work out to 1,200-1,700 BTU/hr. That fits 60-80 gallons, not 120.
8 min
Saunas
Infrared vs Traditional Sauna: Barrel or Infrared?
Infrared vs traditional barrel sauna: different heat, different space, very different running costs. How to choose the one you'll actually use.
6 min
Best Infrared Sauna for Home Under $3,000 (2026)
The best home infrared saunas under $3,000: 1-person, 2-person, budget and full-spectrum picks, with the EMF and heater numbers that decide it.
8 min
Sauna and Cold Plunge Setup at Home: Contrast Therapy
A sauna and cold plunge setup at home: what to buy first, how to plan space and electrical, and the contrast therapy mistakes that cost thousands.
9 min
We don't own these units.
Built from published specifications, warranty terms and owner reports. We show the arithmetic. Manufacturer specifications, installation manuals, warranty exclusions and owner reports, read in full. Then the arithmetic the marketing page leaves out: BTU per gallon, kilowatt-hours at your rate, five-year cost including filters and water.
How we work- We have not bought, held, or operated any unit on this site.
- We publish no measurements of our own: no probes, no logged hours, no durability runs.
- Where the published record is silent or contradicts itself, we say so instead of filling the gap.
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