Waterpark Simulator Sauna & Hot Tub Guide: Heat, Fire, Fixes
How Waterpark Simulator saunas and hot tubs work: unlock them, match temperature and humidity requests, stop guests catching fire, and thaw frozen visitors.
Saunas and hot tubs are Wellness Update facilities that take temperature and humidity requests. Match the dial to the guest's request to keep them relaxing; push it too far and guests catch fire, while the lowest settings freeze them solid. This guide covers unlocks, requests, the water gun, and staff automation.
Five different problems get reported as "the sauna is broken": an unmatched request, a ladle you are not holding, a burning guest, a frozen guest, and a maintenance worker who never touches the dial. Each has its own fix.
What saunas and hot tubs actually do
CayPlay added both in the 0.3 Wellness Update. The official announcement describes them as a relaxing break for guests, with a warning attached: "adjusting the temperature a little too far can create quite a different experience." [Official]
That "different experience" is the fire mechanic — not a bug and not random. The same update added the Yogi's 21 wellness quests, which start at 3 stars and reward new pools, slides, loungers and decorations. [Official]
The Museum questline guide covers where the Yogi fits in the endgame. This page covers the facilities themselves.
How to unlock saunas and hot tubs
The Yogi is the gate. His questline begins after the park reaches 3 stars, and wellness-themed items are earned along the way rather than bought from Caymart like a normal attraction. [Official]
Players on the Steam hub answer the unlock question with two details: finish the Yogi quest line, and look for build-menu items with a green background. The same thread says the 3-star pool is the first hot tub. [Community] Treat the item-by-item gating as player-reported; CayPlay's patch notes do not publish a full unlock table.
If a wellness item is greyed out, the answer is usually quest progress, not research. Check the research tree guide before spending points.
How to read and fill a temperature request
A sauna or hot tub only asks for settings when a guest wants to use it. Since 0.3.44, the sauna stops glowing green when there are no requests, so a green highlight is your signal that someone is waiting. [Official]
Players describe two separate values per facility: temperature and humidity. The wall-mounted plus/minus dial handles temperature; the ladle adds humidity and the ventilation control lowers it. [Community] The cross-check guides describe the same loop. [Third-party]
| Request type | Control | What "done" looks like |
|---|---|---|
| Temperature | Wall-mounted + / - dial | Dial turns green at the requested band |
| Humidity up | Ladle from the water bucket | Request gauge fills |
| Humidity down | Ventilation control | Request gauge drops toward target |
| No request | Nothing to do | Facility is not highlighted green |
Two official patches removed common false alarms: settings no longer ask to be set while the park is closed [Official], and a successful request now gets a grace period before the next one arrives. [Official]
Why the temperature dial will not turn green
If the dial refuses to match, check these in order:
- You are on the wrong band. The request is a target range, not "make it as hot as possible". Step the dial until the indicator turns green rather than holding it at maximum. [Third-party]
- The requesting guest left. Requests can expire if a guest gives up, especially when the facility is far from the path or the park is crowded. [Community]
- The park is closed. Since 0.3.5, closed parks should not generate settings requests at all, so a request that appears during closing time is worth rechecking after the next update. [Official]
- The facility is not powered or reachable. A sauna that was moved or is boxed in by decorations cannot serve guests; the 0.3.18 patch specifically fixed the ladle disappearing when a sauna is moved. [Official]
Why guests catch fire, and how to cool them
Overheating is intentional. Put a guest inside, ignore their requested temperature, and push the dial to the top; community reports put the sauna trigger at 100 degrees Celsius. [Community] The guest runs out burning.
Cooling them requires the water gun. Players report that mops and spray cans do not count, and that burning guests run for the exit, so wait near the door. [Community] [Third-party]
Since 1.0.63 you can hold the trigger instead of clicking repeatedly. [Official] That matters for the Yogi quest that asks you to cool several burning guests, because each guest may need more than one pass.
For the quest specifically:
- Let two or three guests enter before maxing the heat; an empty sauna at maximum temperature scares visitors away. [Third-party]
- Bring the temperature back down after each ignition so the next guest will enter. [Third-party]
- In multiplayer, every player can now complete wellness missions, not only the host. [Official]
What "Ladle needed" means
The ladle is stored in the sauna's water bucket, not on the heater. Players report the message appearing while a ladle is visibly present because they are clicking the heater without holding the tool. [Community]
The fix is to pick up the ladle first, then use it. If the ladle seems to have vanished after a move or a dropped interaction, the cross-check guides say to click its ghosted outline in or beside the bucket to recover it. [Third-party] The 0.3.18 patch also fixed the ladle disappearing when a sauna is moved, so update the game before assuming the tool is gone for good. [Official]
Why guests turn into ice cubes
The opposite failure is real and official. CayPlay's Winter Extravaganza post warns that saunas and hot tubs set to the lowest temperatures can freeze visitors, and that you may need to "pull out your hammer to defrost your visitors." [Official]
Players describe the same thing after a vandal tampers with a hot tub: guests become ice cubes, and the answer is to hammer them free. [Community] Check the temperature before blaming a bug, then use the hammer on the frozen guest.
Can staff handle sauna requests automatically?
Not at the start. Community reports say manual dial work is the default on every platform, and that a separate research unlock lets maintenance staff adjust sauna and hot tub temperatures. A developer reply quoted by the cross-check guide confirms that "there is a separate research that unlocks maintenance doing it." [Community] [Third-party]
CayPlay's public patch notes do not name the node. Community guides call it Wellness Facilities Training; treat the label as player-reported. [Community]
Until that research is bought, the staff management guide is the relevant reference for hiring maintenance, and the achievements guide lists the Wellness mission achievements if you are chasing completion.
Patch history that changes how saunas behave
| Patch | Date | Change that matters here |
|---|---|---|
| 0.3 Wellness Update | 2025-11-28 | Hot tubs, saunas and the 21-quest Yogi line added |
| 0.3.5 | 2025-12-02 | Settings stop requesting while the park is closed; tutorial image updated |
| 0.3.18 | 2025-12-15 | Visitor request counts and lengths rebalanced; sauna setup fixes; ladle no longer vanishes on move |
| 0.3.44 | 2026-01-22 | Sauna stops glowing green when there is no request |
| Winter Extravaganza | 2025-12-18 | Lowest temperatures can freeze guests; hammer them free |
| 1.0.30 | 2026-08-04 | Wellness missions completable by all players in multiplayer |
| 1.0.43 | 2026-08-06 | Grace period between sauna requests after a success |
| 1.0.63 | 2026-08-18 | Hold-to-shoot for all guns, including the water gun |
Quick troubleshooting
| Symptom | Likely cause | Fix |
|---|---|---|
| Dial will not turn green | Wrong temperature band or expired request | Step the dial to the requested band; wait for a new guest |
| "Ladle needed" with a ladle visible | Ladle not held as a tool | Pick it up from the bucket, then use it |
| Guest runs out on fire | Temperature pushed too far | Spray with the water gun; lower the dial afterward |
| Guest is an ice cube | Temperature set too low or a vandal tampered with the tub | Hammer the guest free; reset the temperature |
| Maintenance ignores the panel | Automation research not unlocked | Buy the wellness maintenance research or adjust manually |
| Wellness pool stays empty | Guests prefer hot tubs and saunas | Not a temperature bug; check park layout and facility appeal |
FAQ
Do saunas and hot tubs need repairs like pools?The failures reported most often are temperature problems, not durability. If a facility looks broken rather than cold or hot, use the repair and breakdown guide.
Can I skip the wellness content?Yes. The questline is optional endgame content and the main park loop does not require it.
Why did my sauna request disappear?Requests are tied to visiting guests. If the guest leaves, the request goes with them; the 1.0.43 grace period only covers successful requests. [Official]
Green means someone is asking, the dial matches temperature, the ladle handles humidity, fire and ice are intended outcomes, and staff automation is a research purchase.