Bluonics 55W UV Replacement Ballast | 100–120V Electronic Ballast with Lamp Life Countdown Timer, LED Indicator & Audible Alarm, 4-Pin Connector

✔ Trusted by 200,000+ U.S. homeowners
✔ Over 10 years of proven water filtration experience

UV-55W-BAL-CTD

$69.00
Unit price per

Replacement Ballast with Built-In Lamp Life Countdown

Keep your compatible Bluonics 55W UV water treatment system operating reliably with this replacement electronic ballast. Designed for compatible 55W UV systems, this ballast features a built-in 365-day lamp life countdown timer, helping you keep track of UV lamp replacement intervals for routine maintenance.

Unlike basic replacement ballasts, this model includes green and red LED status indicators, an audible alarm, and a digital countdown display that automatically tracks lamp operating life.

Designed for quick replacement, it features a standard 4-pin UV lamp connector and extended power cords for convenient installation.

Features

Built-in 365-day lamp life countdown timer
Digital countdown display
Green & red LED status indicators
Audible alarm
Standard 4-pin UV lamp connector
Plug-and-play replacement
Extended power cords
Compatible with Bluonics 55W UV systems
Indoor installation

Why Choose a Countdown Ballast?

Knowing when to replace your UV lamp is essential for maintaining system performance. The integrated countdown timer tracks lamp life and provides a visual reminder when routine replacement is due, eliminating the need to manually record installation dates.

The combination of a digital display, LED indicators, and audible alarm provides convenient system monitoring while simplifying regular maintenance.

Technical Specifications

Specification	Details
Product Type	Electronic UV Replacement Ballast
Compatible UV Lamp	55W
Input Voltage	100–120V AC
Frequency	50/60 Hz
Power Plug	US Plug
Lamp Connector	4-Pin
Lamp Life Timer	365-Day Digital Countdown
Display	Digital Countdown Display
LED Indicators	Green & Red Status LEDs
Audible Alarm	Yes
Input Power Cord Length	3 ft 8 in (112 cm)
Output Lamp Cord Length	1 ft 10 in (56 cm)
Installation	Indoor Use Only
Compatible Systems	Compatible Bluonics 55W UV Water Treatment Systems
Package Includes	1 × UV Countdown Ballast
Not Included	UV Lamp, Quartz Sleeve, UV Chamber, Mounting Hardware

Compatibility

Designed for compatible Bluonics 55W UV Water Treatment Systems using a standard 4-pin UV lamp.

Please verify before ordering:

55W UV lamp
4-pin connector
Operating voltage
Ballast model compatibility

Package Includes

1 × UV Replacement Ballast with Countdown Timer

The Bluonics 55W UV Replacement Ballast | 100–120V Electronic Ballast with Lamp Life Countdown Timer, LED Indicator & Audible Alarm, 4-Pin Connector is a sensational customer favorite, and we hope you like it just as much.

Inventory Last Updated: Jul 26, 2026

Love the new countdown ballast.

Bluonics ballast

It has only been 2 weeks since I installed. I like the countdown display and it is working well. I am optimistic that the improvements made will make it last years instead of months as the previous model did for me.

Thank you Bluonics

Thanks to Bluonics for providing these well made UV ballasts that include a countdown timer! I purchased two to use on my older existing UV water filtration that had its original UV ballast finally burn out and one as a spare. Really glad to have found these online and at a very reasonable price! They appear to be well made and look forward to keeping my water UV clean for a long time to come! Thank you Bluonics!!!

Good water

Great product and service.

Great new U/V ballast!

These new ballasts with the countdown timer work great and remind you when your bulb needs to be replaced. Be certain to use a surge protector on your electrical outlet using this ballast. Also, be sure to unplug the ballast if you are using a generator for power such as during an outage, as the generator surging will cause this ballast to blink red indicating it could fail. Great product at a fair price!

Clean water

Have a well on a piece of property that has a lot of horses on it, cowgirl husbands will know what I am talking about. Very happy with the product as well as the service, I have several of these units and will shop here again!

Hope it lasts longer than the last one.

It’s working for now.