How many apps do you have to open to control your smart products?
Cold Plunge Control Pro ships with Home Assistant and the Control Freak integration already set up, so your plunge and the rest of your smart home meet in one place. Connect the apps and devices you already own and simplify to a single app. Multi-platform integration built in: ask Alexa what the status is, tell Google to adjust the temperature, and receive automated voice alerts to let you know when something is out of balance. Alerts reach you by push, text, email or alarm — including when you’re away. Home Assistant stays on your home network.
Sit back — the plunge is ready when you are.
For owners of a tub plus a separate plug-in chiller — stock-tank, barrel or chest plunges — who want the water at temperature on schedule, without babysitting a thermostat. Hot/cold tub owners who switch between a warm soak and a cold plunge, and Home Assistant users who want local control of their chiller. Self-install: plug in, drop in the probes, fit the flow switch with the included unions (no pipe cutting), scan the QR code.
What makes it different
Ready when you are
Set “ready by 6:30”; the controller starts cooling early so the water is at your target when you step in.
Holds your temperature
A water probe keeps the plunge at the target you set, all day.
Works with the chiller you have
Switches your plug-in chiller’s power from the Power Hub. Keep your chiller, swap in a new one later without changing the rest.
Chiller only runs with water flowing
A flow switch on the pipe stops the chiller running dry.
Clean water on a schedule
Ozone and UV run only while the pump moves water; filtration cycles keep it clear without the pump running all day.
Filter reminder
Tells you to clean the filter before flow drops.
Chiller health
A probe on the chiller outlet shows it’s cooling, and flags early if it slows down.
Hot and cold in one tub
A heater outlet switches between a warm soak and a cold plunge on a schedule.
Winter mode
The pump runs when the air nears freezing, protecting outdoor tubs and pipes.
Keeps working when the internet doesn’t
Schedules run on the controller. Ethernet, Wi-Fi, and its own Wi-Fi network.
What’s in Cold Plunge Control Pro
- Controller with Home Assistant + Control Freak integration
- Power Hub — labelled outlets for chiller, pump, ozone, heater and a spare
- Water and air temperature probes
- Flow switch
- Chiller-outlet probe (chiller health)
- Filter pressure sender (filter reminder)
- Plumbing unions — fits without cutting pipes
- Keyed, colour-coded cables
Your tub, chiller, pump, ozone and UV aren’t in the box — you keep the ones you have.
Pro first, Starter later
Pro is building now. A Starter kit (controller, Power Hub, water and air probes, flow switch) is coming later.
What it isn’t: it switches your chiller’s power — it doesn’t set your chiller’s own temperature, and it isn’t promised for every chiller. No health claims, no subscription, and Home Assistant never runs in the cloud. Building a tub or chiller? Ask about the OEM board.
Try the home screen
Change the ready-by time, clog the filter, try a cold night, switch hot/cold, or preview a sample alert.
This is a marketing simulation with example data — not live hardware and not the real app. No login, no cloud.
Join the beta
We’re looking for cold plunge owners to test Cold Plunge Control Pro at home before launch.
Join the betaPrice to be announced.