Coolerguys 3U Rackmount Cooling Kit (High Speed) - Quiet 3-Fan

In this review of the Coolerguys 3U Rackmount Cooling Kit (High Speed) the bottom line is simple: it is a practical, always-on cooling solution for 19' server racks that need steady, high airflow without frequent maintenance. The reviewer found the kit best when continuous operation and predictable lifespan matter most - it ships with three high speed, dual ball bearing 120mm fans and a dedicated 12V power supply so you can start cooling immediately. If you want simple, durable rack cooling that can run 24/7, this kit delivers.

Key Features

• High Speed Fan: The three high speed 120mm fans provide strong airflow to move hot air out of a 19' rack quickly, helping maintain lower internal temperatures.
• Dual Ball Bearing: Dual ball bearings extend the fans' life and keep them running reliably under continuous use compared with sleeve-bearing fans.
• Long Lifespan: With ratings of 50,000+ hours at typical conditions, the kit is built to run 365/24/7 for years before replacement is likely.
• Always-On Ready: This kit is designed to be always on and includes a 2000mA 100-240V AC to 12V DC power supply for uninterrupted operation.
• Reversible Mounting: Fans can be mounted for intake or exhaust by orienting the bracket so air flows toward you when the label faces you.
• Optional Control: Compatible with either a Coolerguys programmable thermal controller or a pre-set thermal controller for those who want temperature-based control.

Who It's For

The kit is ideal for system administrators, small datacenter operators, and home lab builders who need a straightforward 19' rack cooling option that runs continuously. It is also a good choice for setups where predictability and low-maintenance operation are priorities, since dual ball bearings and an included power supply reduce the need for frequent servicing.

Those who need ultra-low noise, variable-speed control out of the box, or integrated temperature monitoring should consider adding the optional Coolerguys thermal controller or looking at controller-equipped units. This kit itself is an always-on high speed solution rather than a silent, temperature-regulated system.

Pros & Cons

Pros

• Durable dual ball bearing fans rated for long lifespans under continuous operation.
• Includes a universal 100-240V AC to 12V DC 2000mA power supply for easy installation.
• Mounting allows intake or exhaust orientation to suit rack airflow design.

Cons

• Fans are high speed and will be audible compared with low-speed or controlled fans, with a combined noise figure noted in specifications.

Specifications

Product Type	3U rackmount cooling kit
Fan Size	120mm (three fans)
Bearing Type	Dual ball bearing
Noise Level	38.7dB individual, 43.5dB combined
Power Supply	2000mA 100-240V AC to 12V DC
Compatibility	Standard 19' server rack
Rated Lifespan	50,000+ hours (based on 95F / 35C operating temperature)

Our Verdict

The Coolerguys 3U Rackmount Cooling Kit (High Speed) is a solid value for anyone needing reliable, always-on cooling for a 19' rack. Its included power supply, dual ball bearing fans, and reversible mounting make it practical and low maintenance; pick up a Coolerguys thermal controller if quieter, temperature-dependent operation is required.

Frequently Asked Questions

Can the fans be mounted as intake or exhaust?
Yes. Mount the fan to the bracket pointing in the desired direction; when the label is facing you the air will flow toward you.

Is a separate power supply required?
No. The kit includes a Coolerguys 2000mA 100-240V AC to 12V DC power supply for immediate installation.

Are these fans rated for continuous use?
Yes. With dual ball bearings the fans are rated to last 50,000+ hours and are intended for 365/24/7 operation.