Hot Then Cold covers home saunas, cold plunges and contrast-therapy setups. Every guide is written to help you make one decision well, and every product fact in it — a price, a size, a plan, a warranty — comes from a source we can point to.

What we compare

• Size, footprint and how many people it actually seats or fits
• Heater type and power (traditional, wood-fired or infrared) and the electrical circuit it needs
• Wood species, insulation and build — and what that means for upkeep
• For cold plunges: the chiller's lowest temperature, filtration and sanitation, and whether it runs on a standard outlet
• Warranty length and what it excludes
• Delivery, assembly, returns and financing
• The full cost to own: the pad or floor, an electrician, water and running costs — not just the sticker price

Where our information comes from

• Manufacturers' product pages, specification sheets and owner's manuals
• Published pricing and warranty terms, checked on the seller's own site and dated in each guide
• Published research and medical guidance for any health topic — never a promise of results
• Customer ratings from Trustpilot, quoted with the rating and review count, where a brand has them

What we never do

• Claim to have tested a product we have not used.
• Publish made-up reviews, quotes, ratings or test results.

Prices change

Each guide gives the month a price or plan was checked. Sellers change prices and run sales often, so confirm the current price on the seller's own site before you buy.

How we make money

Some links on this site are affiliate links: if you buy or sign up after following one, the seller may pay us a commission, at no extra cost to you. Read our full affiliate disclosure.

Corrections

If something in a guide is wrong or out of date, tell us and we will check it and fix it.