You bought a hot tub to relax. Instead, you got a part-time job.

The AutoChlorinator™ tests your water and doses chemicals automatically. No strips. No guessing. No maintenance visits.

Get early access

The hot tub maintenance trap

You bought a hot tub to relax. Instead, you got a part-time job.

The testing ritual

Dip strips, wait, squint at colors, Google what "high alkalinity" means. Repeat 2-3 times per week. Forever.

The guessing game

"A capful? A tablespoon? The whole bottle?" Add chemicals, hope for the best, check again tomorrow.

The surprise visits

Guests coming tomorrow. Race to the hot tub store. Shock it. Pray it clears in time. Sound familiar?

The hidden costs

Overdosing wastes chemicals. Underdosing ruins equipment. Either way, you pay—in money, time, or both.

What if your hot tub just... handled itself?

What if your hot tub just... worked?

The AutoChlorinator™ floats in your tub, tests the water automatically, and doses exactly what's needed. You refill it every few months. That's it.

1

Drop it in

2

Forget about it

3

Refill every 6 months

See Your Water Quality. Anytime. Anywhere.

No more wondering if your hot tub is ready. Check your water chemistry from your phone—or share a live dashboard with guests.

142
Days Hands-Free

Set It and Forget It

The AutoChlorinator™ handles your water chemistry so you don't have to. Track your hands-free streak and see how long you can go without touching a test strip.

● Live
dashboard.autochlorinator.com

Live Dashboard

Check your water chemistry from anywhere. Vacation rental hosts can verify water quality before guests arrive—without driving over. Share a public link so guests can see for themselves.

How It Works

The AutoChlorinator™ uses intelligent water testing and automated chemical dosing to maintain perfect hot tub water chemistry automatically.

Continuous Water Testing

The device continuously monitors chlorine levels in your hot tub water, testing multiple times per day to detect when treatment is needed.

Smart Dosing Calculation

Based on current water conditions, usage patterns, and water volume, the system calculates the exact amount of chlorine needed—no more, no less.

Automated Treatment

The AutoChlorinator™ automatically dispenses the precise chlorine dose directly into your hot tub water, maintaining optimal sanitizer levels 24/7.

Continuous Monitoring

The cycle repeats automatically, adjusting to changing conditions like heavy use, temperature changes, or rain contamination.

Hot tub care, simplified

Monitor the safety of your water.
The AutoChlorinator™ continuously regulates chlorine levels, keeping your hot tub clean and free from harmful bacteria. Enjoy peace of mind knowing your water is always safe, balanced, and ready for relaxation.
Easy-to-read, easy-to-understand.
The AutoChlorinator™ doesn't use complicated technology or store your data in the cloud — no required apps or Wi-Fi and reliable, straightforward water care.
Set it and forget it.
Think about planning your next hot tub party — not wondering if your hot tub will be balanced in time. Relax and enjoy your soak while it does the work for you!
Safe, 10-second chemical refills.
Topping up your chemicals and reagents is quick, easy, and safe with the AutoChlorinator™. Refills are easy, mess-free, and last 6 months!
Bring-your-own chemicals.
The AutoChlorinator™ doesn't rely on proprietary technology. We strive to be vendor-neutral so any reagents or chlorine will work.
More efficient use of chemicals.
The AutoChlorinator™ only doses chemicals as they are needed. This means fewer refills, less hassle, and more savings — all while maintaining crystal-clear, safe water.

Get early access

Join the waitlist for founding member pricing and first access when we ship.

What you'll get:

  • Free guide: 5 hot tub chemistry mistakes (and how to fix them)
  • Build updates: Real progress, no fluff
  • First access: 24 hours before everyone else
  • Founding member pricing: You're in the first 100

No spam. Unsubscribe anytime.

Follow the build

From prototype to your hot tub.

We're documenting every step—prototypes, test results, design decisions, and setbacks. No marketing surprises. See the real product take shape.

See It Work

Watch real test data from our prototypes. Chlorine readings, dosing accuracy, battery life—actual numbers, not marketing claims.

Shape the Product

Early followers get input on features. Want bromine support? Longer battery? Your feedback influences what we build.

No Vaporware

Hardware projects fail all the time. Our public timeline means you'll know if we hit problems—and how we're solving them.