# Recovery Math

> Sauna, cold plunge and sleep gear, by the numbers


## Pages

- [Cold Plunge vs Chest Freezer Cost Calculator (Free)](https://recoverymath.com/calculators/cold-plunge-vs-chest-freezer/): Ice, chiller or chest freezer: which cold plunge setup is cheapest over 5 years? Free calculator with your inputs.
- [5-Year Cost of Ownership Calculator (Free) | Recovery Math](https://recoverymath.com/calculators/5-year-cost/): The 5-year cost of a sauna, cold plunge or bed-cooling system: price, install, electricity, filters, memberships. Not just the sticker price.
- [120V vs 240V Sauna Calculator (Free) | Recovery Math](https://recoverymath.com/calculators/sauna-120v-vs-240v/): Does your sauna need 120V or 240V? Compare circuit, breaker, heat-up and install cost for two saunas. Free calculator.
- [Home Sauna Running Cost Calculator (Free) | Recovery Math](https://recoverymath.com/calculators/sauna-running-cost/): What a home sauna costs to run per session, month and 5 years, by model and state electricity rate. Free calculator.
- [Free Sauna & Cold Plunge Cost Calculators | Recovery Math](https://recoverymath.com/calculators/): Four free calculators: sauna running cost, 120V vs 240V, sauna 5-year cost and cold plunge vs chest freezer. Use your own electricity rate.
- [Red Light Panels by the Numbers: What the Measurements Say](https://recoverymath.com/red-light/): Red light panels compared on wavelengths, irradiance at real distances, flicker and warranty, with independent measurements credited.
- [Sleep Tech by the Numbers: Bed Cooling Cost Incl. Membership](https://recoverymath.com/sleep-tech/): Bed cooling systems compared on what they cost to own: hardware, membership, parts and trial terms over 5 years.
- [Cold Plunges by the Numbers: Chiller vs Ice vs Chest Freezer](https://recoverymath.com/cold-plunge/): What a cold plunge really costs over 5 years: chiller, ice or chest freezer, weight when full and circuit needs. Free calculator.
- [Home Saunas by the Numbers: Running Cost, Wiring & 5-Year Cost](https://recoverymath.com/saunas/): Home sauna running costs, 120V vs 240V wiring, warranty fine print and 5-year totals. Free calculators, every number sourced.
- [Terms of use | Recovery Math](https://recoverymath.com/terms/): Terms of use for recoverymath.com, our calculators and newsletter.
- [Privacy policy | Recovery Math](https://recoverymath.com/privacy-policy/): What personal information Recovery Math collects, how we use it, and your privacy choices.
- [Affiliate disclosure | Recovery Math](https://recoverymath.com/affiliate-disclosure/): How Recovery Math makes money through affiliate links, and why commissions never change our numbers or verdicts.
- [Contact | Recovery Math](https://recoverymath.com/contact/): Contact Recovery Math: corrections, calculator questions and suggestions at hello@recoverymath.com.
- [About | Recovery Math](https://recoverymath.com/about/): Recovery Math is an independent, numbers-first guide to home saunas, cold plunges, sleep tech and red light.
- [How We Analyse: Our Method, Sources & Update Policy](https://recoverymath.com/how-we-research/): How Recovery Math turns spec sheets, manuals, electricity data and recall records into verdicts, and how we keep every number dated and sourced.
- [Recovery Math: Saunas, Cold Plunges & Sleep Tech by the Numbers](https://recoverymath.com/): Independent running-cost, wiring and 5-year cost analysis for home saunas, cold plunges and sleep tech. Free calculators. Every number sourced.


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