Follow The Signal.
Find The Leak.
Five purpose-built detectors and one 5% Hydrogen / 95% Nitrogen tracer gas that rises straight to the surface — sensitive enough to find leaks other methods miss, without excavation.
Precise, Rapid, Reliable & Versatile
Precise Leak Location
5% H₂ / 95% N₂ rises straight up through dirt, asphalt, and concrete to be read at ground level.
- Confirms leaks acoustic methods miss
- 92% correct-location rate reported by customers
Pinpoint Accuracy
Targeted repairs, not guesswork — know exactly where to dig or open the system before you start.
- No unnecessary excavation
- Faster, more confident repairs
Safe & Non-Invasive
Non-toxic, non-corrosive, non-combustible in tracer form, and safe for drinking-water piping.
- No damage to pipes or systems
- Readily available gas supply
Built To Be Versatile
One tracer gas, five detector formats, covering underground, automotive, HVAC, and refrigeration work.
- Detection to 0.25 oz/yr refrigerant
- EPA-compliance ready
Five Detectors.
One Job — Find It Fast.
Every unit shares the same core sensing method and a graduated display with rising alert tone as you close in. Pick the format that matches the job.
Reading the gauge: most H2Leak detectors carry a 3-level onboard sensitivity dial — shown below as our sensitivity gauge — so you can coarse-scan, then fine-tune right down to the leak.
Hydro-Lok™
Compact underground detector with a field-replaceable flex hose and hydrogen sensor. Cone and pinpoint tips read straight through soil, asphalt, and concrete.
Handheld Hydrogen
Our most sensitive handheld — reads 1 to 1000 ppm H₂ with a graduated display and rising alert tone as you close in on the leak.
Original Handheld
Our original hydrogen sniffer — the same high-sensitivity core, in a streamlined package for HVAC, automotive, and general-purpose work.
Hydrogen & Refrigerant
Two detectors in one unit — switch between refrigerant-gas and H₂/N₂ tracer detection depending on what’s already charged in the system.
Helium & Multi-Gas
Thermal-conductivity detection across helium, hydrogen, argon, CO₂, SF₆, methane, and refrigerant gases — built for labs and specialized industrial work.
Not Sure Which Unit Fits?
Tell us the systems you’re servicing and we’ll match a detector to the job.
Talk To UsWhere Our Detectors
Go To Work
Same tracer gas, five very different jobsites — from underground pipe to supermarket refrigeration racks.
Underground
Water, gas, and pool-piping leaks located without digging first — tracer gas moves straight up to ground level.
Learn More →
Automotive AC
Find refrigerant leaks while the vehicle is still on the lift — no dye penetrant, no repeat visits.
Learn More →
HVAC & Refrigeration
Recover, recharge with tracer, locate, repair, and verify — sensitive to leaks as small as 0.25 oz/yr.
Learn More →
Grocery Refrigeration
Help supermarkets stay ahead of EPA refrigerant-leak compliance on large commercial racks.
Learn More →Other Applications
Pipelines and specialty industrial systems — hydrogen and helium tracer adapts to nearly any sealed system.
Learn More →
Built To Put This
Tech In Every Truck
Greg Vaughan started working with hydrogen leak detectors in 2007, after a decade selling helium units to HVAC and refrigeration manufacturers. Those same manufacturers also sold hydrogen detectors for the underground water market — but built for industrial buyers, out of easy reach for most plumbers and leak-detection crews.
Greg knew that same sensitivity could be made far more accessible. He redesigned the detector to bring it within reach of everyday leak-detection trucks and crews, without giving up accuracy.
Our goal is simple: put this technology within reach of every leak-detection truck, plumbing crew, and municipal water department that needs it.
Read More About UsWhat Our Clients Say
A plastic pipeline, 5 ft underground, only 6 PSIG to work with — acoustic methods weren’t going to find this one. A few hours of low-pressure tracer gas with the Hydro-Lok narrowed the leak to within a 6 ft radius. The team even shipped high-pressure hoses and fittings so we could start right away.
Production Engineer, Evonik Industries AG
Twenty years of leak detection with acoustic and pipe-locating equipment, and the Hydro-Lok still finds leaks those methods can’t. It’s been standard equipment on the truck for three years now, and it’s saved plenty of jobs where other companies charged for a location they never found.
Dave Weeks Plumbing, Lakeland, FL
Simply Leak Detection has used the Hydro-Lok since 2012. Recently, they sent us the video below of the Hydro-Lok in action.
Watch: Hydro-Lok In Action Video →718 Griffin Avenue #147, Enumclaw, WA 98022
Serving Seattle, WA · Tacoma, WA & Olympia, WA
The H2Leak Hydrogen Leak Detector product has proved wonders for my business, finding leaks others miss and locating them more quickly.
Watch: H2Leak In Action Video →Your company sold us our hydrogen detector years ago and could not have been more pleased. We had one issue and the warranty was immediate and refreshing. I have heard horror stories about other detectors and companies, but yours is the only one we would ever consider doing business with.
President, Waterline Leak and Location
Ready To Find
Your Next Leak?
Tell us what you’re servicing — underground, automotive, HVAC, or refrigeration — and we’ll help you pick the right detector.