Cold Plunge And Sauna Accessories: What You Actually Need
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Accessories are where a sauna or cold plunge goes from “a thing I own” to “a thing I use every day.” The good news: the items that make the biggest difference are inexpensive. A bucket and ladle, a thermometer, a backrest, and a couple of towels can transform a sauna for under $150; a cold plunge mostly needs a good cover, a thermometer, and a sanitation plan. We’ve split everything into true essentials, worthwhile upgrades, and an honest skip list. New here? See the home recovery room guide for the bigger picture.
Start here: the under-$200 starter kit
If you only buy a handful of things, buy these. They cover hygiene, safety, comfort and water care — the four things that actually determine whether you keep using your setup.
Sauna essentials
Bucket & ladle Essential
~$30–$80What to look for: a 3–4L wooden or biocomposite bucket and a long, balanced ladle. Biocomposite (e.g., Rento-style) resists warping; wood looks classic but must dry fully between uses.
For traditional and hybrid saunas, this is how you make löyly (steam). Even infrared owners use a small bucket for towels and water. Shop bucket & ladle sets →
Thermometer & hygrometer Essential
~$15–$120What to look for: a combo analog dial (simple, reliable) or a digital/Bluetooth unit (e.g., SensorPush-style) for logging temp and humidity. Accuracy matters more than features.
This is a safety and performance tool — it tells you the room is actually in a safe, effective range and lets you repeat your favorite settings. Shop sauna thermometers →
Backrest & headrest Essential
~$25–$90What to look for: ergonomic cedar or birch that won’t scorch; a curved headrest for neck support. Especially valuable in infrared cabins where you sit longer.
The single biggest comfort upgrade for longer sessions — the difference between enduring the heat and relaxing into it. Shop backrests & headrests →
Towels & bench cover Essential
~$20–$70What to look for: natural, absorbent cotton or linen (Turkish peshtemal towels are light and quick-drying). You want at least two — one to sit on (hygiene, protects the wood), one to dry off.
Sitting on a towel protects the bench from sweat and keeps things hygienic — non-negotiable for a shared sauna. Shop sauna towels →
Sand timer & sauna hat Nice to have
~$15–$45What to look for: a heat-safe sand timer (10–15 min) to pace sessions; a wool sauna hat to keep your head cooler in high heat (traditional saunas).
Small, inexpensive ritual-builders. The hat genuinely helps in hot Finnish-style saunas. Shop timers & hats →
Cold plunge essentials
Insulated cover Essential
~$150–$400What to look for: a fitted, well-insulated cover for your tub. It’s the most cost-effective accessory you’ll buy — it holds the cold, keeps debris out, and cuts your chiller’s running cost.
If you only add one cold-plunge accessory, make it this. A good cover pays for itself in lower electricity and less chiller wear. Shop cold plunge covers →
Floating thermometer Essential
~$10–$40What to look for: a durable floating or digital thermometer if your tub doesn’t display water temp. Lets you dial in a consistent, repeatable cold.
Knowing your exact water temperature is how you progress safely and track what works. Shop plunge thermometers →
Sanitation & filtration Essential
~$20–$300What to look for: match it to your tub — an inline filter cartridge, an ozone/UV module, or simple food-grade hydrogen peroxide. Avoid chlorine, which can damage chiller parts over time.
Clean water is non-negotiable. Learn the options in our cold plunge water treatment guide before buying. Shop sanitation & filters →
Step stool & mat Nice to have
~$25–$80What to look for: a non-slip step for safe entry/exit (especially tall tubs and barrels) and a quick-draining bamboo or rubber mat to stop slips on the floor.
A simple safety upgrade that matters most when you’re cold, wet and a little unsteady stepping out. Shop steps & mats →
Shared & contrast-therapy accessories
Robe & quick-dry towels Nice to have
~$30–$120What to look for: a warm, absorbent robe for the walk between hot and cold, plus extra quick-dry towels. Essential comfort when you’re cycling sauna → plunge → sauna.
Moving between heat and cold is far more pleasant with a robe waiting. See the contrast therapy guide for the routine. Shop robes & towels →
Aromatherapy oils Nice to have
~$10–$30What to look for: a few drops of high-quality eucalyptus, pine or birch oil added to the löyly water (traditional saunas only — never on infrared heaters). A reputable plain essential oil works as well as any “sauna-branded” version.
A genuine atmosphere upgrade for traditional saunas — just don’t overpay for branding. Shop sauna oils →
Worthwhile upgrades (once you’ve got the basics)
- Red light therapy panel — a legitimate add-on for recovery and skin if you don’t have integrated red light; buy a standalone panel rather than an overpriced “sauna” version.
- Warm, indirect lighting (2200–2700K) behind a backrest or under a bench for spa ambience — pleasant, not essential.
- Bench cushions / lumbar support — especially nice in infrared cabins for longer, seated sessions.
- Accessory package/bundle — if you’re starting from scratch, a matched bundle (bucket, ladle, thermometer, hygrometer, timer, backrest) is usually cheaper than buying piecemeal and looks coherent.
What to skip (honestly)
Save your money on these. Not everything marketed for saunas and plunges earns its price:
- Elaborate “sauna” water-filtration systems — clean tap water in a quality bucket is fine; these multi-stage rigs add little for most home users.
- Overpriced branded essential-oil kits — a quality plain eucalyptus or pine oil works identically for a fraction of the cost.
- Gimmicky “smart” controllers and decorative lighting packages sold as must-haves — pleasant splurges, not core to the experience.
- Chlorine for cold plunges — not just unnecessary, it can degrade chiller components over time.
Frequently asked questions
What accessories do I actually need for a sauna?
The true essentials are a bucket and ladle (traditional/hybrid), a thermometer/hygrometer, a backrest or headrest, and a couple of towels plus a bench cover — typically $50–$150 total. Everything else is comfort or atmosphere.
What’s the most important cold plunge accessory?
A fitted insulated cover. It holds the cold, keeps debris out, and lowers your chiller’s running cost — it pays for itself. After that, a thermometer and a sanitation plan.
How should I sanitize cold plunge water?
Use a filter cartridge, an ozone/UV module, or food-grade hydrogen peroxide — matched to your tub. Avoid chlorine, which can damage chiller parts. See our water treatment guide.
Are sauna accessory bundles worth it?
If you’re starting from scratch, yes — a matched bundle is usually cheaper than buying piecemeal and ensures everything fits your sauna’s style. They also make a great gift.
What accessories are a waste of money?
Elaborate sauna water-filtration systems, overpriced branded oil kits, and gimmicky smart controllers or decorative lighting sold as essentials. And never use chlorine in a cold plunge.
Sources & further reading
- Haven of Heat — Best Sauna Accessories You Actually Need (2026). havenofheat.com
- Peak Primal Wellness — Sauna Accessories You Actually Need (and what to skip). peakprimalwellness.com
- Topture — Sauna Accessories Buyer’s Guide: Essentials & Upgrades. topture.com
- homesauna.com — What Are the Best Sauna Accessories for Home Use? homesauna.com
Prices are approximate and vary by material and brand. Confirm current details before buying.