Updated April 09, 2019 by Quincy Miller

The 6 Best Ultrasonic Leak Detectors

This wiki has been updated 16 times since it was first published in December of 2016. Nothing can bring an engine or HVAC unit screeching to a halt quite like an air or fluid leak. Unfortunately, finding one can be a lot like searching for a needle in a haystack, since the sound made is tough to hear. These ultrasonic detectors take some of the guesswork and pain out of diagnosing a fault, as they can pick up on noises beyond the reach of human ears. When users buy our independently chosen editorial recommendations, we may earn commissions to help fund the Wiki. If you'd like to contribute your own research to the Wiki, please get started by reviewing this introductory video.

This wiki has been updated 16 times since it was first published in December of 2016. Nothing can bring an engine or HVAC unit screeching to a halt quite like an air or fluid leak. Unfortunately, finding one can be a lot like searching for a needle in a haystack, since the sound made is tough to hear. These ultrasonic detectors take some of the guesswork and pain out of diagnosing a fault, as they can pick up on noises beyond the reach of human ears. When users buy our independently chosen editorial choices, we may earn commissions to help fund the Wiki. If you'd like to contribute your own research to the Wiki, please get started by reviewing this introductory video.

1. Robinair 16455 TruTrack

If you live in a climate where a properly working air conditioner is critical to your comfort and/or health, then the Robinair 16455 TruTrack (appx. $566) should be in your toolbox. This model can detect refrigerant leaks, which is one of the top reasons why AC units malfunction.

Audible and visual alerts
Picks up both steam and gas
Requires only one 9-volt battery

2. Inficon Whisper

You won't have to yell for peace and quiet with the Inficon Whisper (about $205), as it boasts internal noise-control circuitry that helps it filter out background sounds. The wired headphones should be capable of blocking out the rest of any commotion.

Ideal for single-handed use
Rechargeable transmitter
Comes with carrying case

3. Allosun EM2268

The Allosun EM2268 (appx. $149) is tiny enough to carry in a pocket, and barely realize it's there until you need it. It comes in handy if you already have an overstuffed toolbox, or just want something that won't weigh down your coveralls.

Includes two probe tips
Volume-adjustment dial on headphones
Can also detect electrical discharge

4. Bacharach Tru Pointe

Some leaks need to be identified and stopped immediately, or you could have a disaster on your hands. The Bacharach Tru Pointe (about $762) determines the intensity of the problem and turns it into a correspondingly loud noise, helping you quickly track down its source.

Ten-segment led bar graph
Sensitivity adjustments
Isn't affected by wind

5. Allosun EM282

The Allosun EM282 (around $54) will help you ensure the integrity of pipes, valves, and wires, but it won't dip too far into your tool budget. A recessed control on the side lets you increase or decrease its detection strength as needed.

Power and leak indicator lights
Large test button
Struggles in cramped spaces

6. Amprobe ULD-300

The Amprobe ULD-300 (about $323) is a good option for any handyperson, mechanic, or HVAC technician. It has an extension tube to help you reach farther and find failing valves and bearings. Unfortunately, the included headset isn't well padded.

Not affected by background noise
Minimal learning curve
Difficulty with smaller leaks

Last updated on April 09, 2019 by Quincy Miller

After getting his bachelor’s from the University of Texas, Quincy Miller moved out to Los Angeles, where he soon found work as a copywriter and researcher, specializing in health and wellness topics for a major online media brand. Quincy is also knowledgeable about home improvement, as he’s had extensive experience with everything from insulation to power tools to emergency room trips, sometimes in that order. Sharing a home with three dogs and a couple of cats has forced Quincy to learn as much as he can about pet supplies, animal nutrition and, most importantly, the best ways to tackle the mountains of fur that accumulate in every corner of your home.

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