Picked from listed specs and manufacturer documents; we haven't tested these units.
This page is for sauna owners and builders. For stones, Harvia sells a standard-size box listed for electric heaters. For water, the Northwood cedar bucket and ladle set holds 1 gallon. To watch heat and humidity, the Northwood 2-in-1 gauge reads both. Use the stones and wood treatments your heater and sauna manuals call for.
Use the stone size and amount your heater manual gives.
Who it suits: Owners of an electric stove heater who need fresh stones.
Specs:
Spec source: as listed (model not confirmed), checked 2026-10-17
Trade-off: The box weight isn't confirmed in our sources. Check the listing, and check how many pounds of stones your heater manual calls for.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Filling a heater that takes 5–10 cm stones.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: Make sure your heater manual allows this stone size and type.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Topping up or replacing the stones in a smaller heater.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: Stone size isn't given in our sources. Check the listing against your heater manual.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Traditional sauna owners who pour water on the stones.
Specs:
Spec source: Northwood Sauna product page, checked 2026-10-17
Trade-off: Only pour water on the stones if your heater manual allows it.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: A new sauna owner who wants the basics in one box.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: Sizes aren't in our sources, so check the listing.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Anyone who wants to read heat and humidity on one wood gauge.
Specs:
Spec source: Northwood Sauna product page, checked 2026-10-17
Trade-off: Mount it where your sauna or heater manual suggests.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Someone who wants a slim, silver-finish gauge.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: Mount it where your sauna manual suggests.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Leaning back against a hot wall in comfort.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: Check the size against your bench depth on the listing.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Two-person cabins, or a hemlock room where you want the wood to match.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: Check the size against your bench on the listing.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Adding one backrest to a cedar room.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: One backrest per pack, so order one per seat.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Keeping track of time without bringing a phone into the heat.
Specs:
Spec source: Northwood Sauna site and the listing, checked 2026-10-17
Trade-off: Fifteen minutes is how long the sand runs, not a session guide. Follow your manual.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: A wood timer for a light-colored room.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: The run time isn't in our sources. Check the listing.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: A slim wall timer for a small room.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: The run time isn't in our sources. Check the listing.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Who it suits: Soft light in a traditional sauna room.
Specs:
Spec source: HUUM installation instructions, checked 2026-10-17
Trade-off: A dealer page gives a different heat range, so go by HUUM's guide and mount the light where it says. Have an electrician do the wiring.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Follow your sauna maker's care guide. We list only products sold for sauna use, and we make no cleaning claims of our own. See sauna care and cleaning.
Who it suits: Owners who want a cleaner sold for sauna wood.
Specs:
Spec source: as listed (we found no maker spec sheet), checked 2026-10-17
Trade-off: Check your sauna maker's care guide before you use any cleaner. Finnleo, a sauna maker, says its simplest routine is a brush and plain water.
Check delivery options, assembly details and any freight notes on the listing at checkout.
Need a heater too? See sauna heaters by kW and voltage.
Follow your heater manual. Harvia, a heater maker, says to re-stack sauna stones every year, and to replace stones that crumble or look yellow when you tap two together.
Follow your sauna or heater manual. It shows where to mount a thermometer in your room.
It measures humidity, which is the amount of moisture in the air. Pouring water on the stones raises it.
Only what your sauna maker's care guide recommends. Finnleo, a sauna maker, says not to paint, varnish or stain the inside of a sauna. Harvia suggests a coat of paraffin oil on clean, dry benches.
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