HVAC equipment sitting on work bench

What is the Best Refrigerant Leak Detector?

In Articles by Matthew Eversole10 Comments

Cooling season is almost here. As you prepare for the return of air conditioning service calls, you might consider adding an electronic leak detector to your toolbox. “What’s the best refrigerant leak detector?” you might ask other HVAC technicians.

H-10 PRO Universal Refrigerant Leak Detector

The answer to that question is simple. While we manufacture a variety of leak detection instruments, the H-10 PRO is the best. Learn why the H-10 has been the gold standard among HVAC-R professionals for decades and how the latest model of this popular refrigerant detector improves on its legacy.

H-10 refrigerant leak detector

Timeless Design

The H-10 PRO is an ultra-sensitive refrigerant leak detector. Its tried-and-true heated diode sensor technology helps HVAC technicians to find small refrigerant leaks fast.  As a result, they can reduce the time spent searching for a refrigerant leak and complete the job.

  • Ultra-sensitive DetectionLocates refrigerant leaks as small as 0.006 oz/year (stationary) and 0.1 oz/year (moving).
  • Universal DetectionDetects any refrigerant that you might find in a residential / commercial application, including all CFC, HFC and HCFC refrigerants.
  • Rapid Response TimeAV indicators notify of the presence of a refrigerant within 1-second of exposure.
  • 3-Hour Battery LifeRechargeable battery allows users to break-free of extension cords when chasing a leak in a remote location (attic or crawlspace).

Find Small Refrigerant Leaks Fast with the H-10 PRO

Highly responsive to refrigerant leaks, Bacharach's H-10 PRO is trusted by technicians worldwide. It's simply uncompromising.

The Choice of HVAC-R Professionals Everywhere

Not yet convinced that the H-10 PRO is superior to every other leak detector on the shelves at your local supply house? Don’t take our word for it, see what other HVAC-R professionals say about the H-10’s ability to reliably locate refrigerant leaks.

Download H-10 PRO Datasheet


  1. I remember using the corded version way back when i was an apprentice we always found our leaks.
    Didn’t know there was a cordless version nice!

  2. As an active and leading test & measurement laboratory equipment import business management firm, we are so pleased to introduce who we are and what we do. We have been dealing with helium vacuum leak detector, vacuum gauge, etc. for analytical, chemical instruments, university and industry for years.
    We have had a lot of inquiries about specific refrigerant leak detectors, so I would like to take this occasion to do business with you. I would greatly appreciate it if you would provide us technical specification and pricing as to whole range of your products unless you have liaison office over here yet. I look forward to hearing from you.

  3. I used the H-10 B GE style leak detector for many years and that is the only leak detector that I would use. Finally Inficon came out with the D-tek and it worked so well that I laid aside my H-10, mostly because of not having to find 115 volt power . Then came the HFC refrigerants. I never was satisfied with heated diode Sensor for HFC. It did work when new but lost sensitivity quickly with age. Have you made improvements to the heated diode sensor so that it will work well with HFC’s?
    I am currently using infrared sensor technology and it is the best I have found but would like something better for HFC’s.

    1. Author

      Hi Laban,

      The H-10 G and H-10 PM were both good instruments that worked great on older refrigerants, like: R-22, R-12, and R-134a. Once the refrigerant blends were introduced, they required that the heater voltage be increased slightly in order to achieve a response. (While increasing the heater voltage slightly and using the leak detectors in the “SMALL” leak range and “MANUAL” mode did provide response to leaks, it also reduced the lifespan of the sensor.)

      The H-10 PRO was designed to detect all refrigerants and, although it looks like the H-10 PM externally, it is totally different under the hood. The main PC board was re-designed and a different pump was used to provide optimal response to every refrigerant on the market. R-410A, HFO1234yf, along with all of the original refrigerants previously detected with the H-10 G and H-10 PM are now detectable as the H-10 PRO is received by the customer. In general, the H-10 PRO readily detects all CFC, HFC and HCFC refrigerants.

      The H-10 G and H-10 PM had a reputation for being the best leak detector for decades. Now, with a growing number of refrigerant blends, the H-10 PRO is quickly being recognized as the “Best Leak Detector” for these refrigerant blends as well as all the older refrigerants.

  4. When I was in my teens, working with my dad, he swore by the original H-10 BY G.E. (Ok, yes that was 50 years ago,) Since then, I have bought so many leak detectors over the years and found some that work ok, some that mislead you, and some that are excellent. Currently I have 3 on the truck besides the dye’s and ultrasonic. The infrared works, just not quickly, the D-tek used to work well, but doesn’t seem responsive after several years. The best so far is the Bacharach Dual, has a changeable sensor tip for natural gas and refrigerants. This is interesting, looks like I’m going to have to check this one out.

    1. Author

      Hi John,

      The Informant®2 (the dual gas detector you mentioned) is a great instrument, but the H-10 PRO is far more responsive to the presence of refrigerant blends like R-410A. Give the H-10 PRO a try and we’re confident that you won’t need anything else (UV dye, soap bubbles, etc.) for chasing refrigerant leaks.

  5. I’ve been in the HVAC business for 21 years and I’m on my 2nd H series leak detector. My H-60 just stopped working and now I’ve got the H-10 PRO. I was amazed at how much faster and more responsive it was then my previous 2, but one question since it is rechargeable does the equipped power cord double as a power source and will charging it through my service trucks power supply damage the unit,the included info is pretty vague.

    1. Author

      Hi Bob,

      You are able to power the H-10 PRO with the included AC charger. If using the AC charger and a power inverter in your truck, there will be no problems with damaging the unit. If using the DC auxiliary cable and the truck’s 12 volt battery, the H-10 PRO’s battery will charge but may never indicate a “full” charge.

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