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TopTes PT520A Gas Leak Detector — 17-Inch Gooseneck Combustible Sniffer
$42.49
Final price set by Amazon · may vary
EDITORIAL REVIEW: 4.5/5 — WC Safety Review of the TopTes PT520A, a value gooseneck combustible sniffer. Editorial assessment by Steven Eaton, WC Safety editor, based on published TopTes specifications and category f...
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EDITORIAL REVIEW: 4.5/5 — WC Safety Review of the TopTes PT520A, a value gooseneck combustible sniffer.
Editorial assessment by Steven Eaton, WC Safety editor, based on published TopTes specifications and category fit. We did not laboratory-test this product.
Editorial assessment by Steven Eaton, WC Safety editor, based on published TopTes specifications and category fit. We did not laboratory-test this product.
The TopTes PT520A is an affordable combustible gas leak detector with a 17-inch gooseneck probe and audible and visual alarms for natural gas (methane), propane and butane — it traces a leak to its source; it does not measure whether the air in a space is safe.
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Why the TopTes PT520A is the value combustible workhorse
The most useful leak detector is the one that is on the truck when you need it — so a good combustible sniffer has to be cheap enough to buy in quantity. The PT520A is that value workhorse: an affordable combustible gas leak detector with a long 17-inch gooseneck that bends into place behind and under appliances, tracing natural gas (methane), propane and butane, with an audible tick-rate and visual indication that climb near the leak. As gas leak detectors go, this is the value gooseneck pick, and the best gas leak detector guide and the gas detection guide explain where it fits. It puts a capable combustible sniffer in every truck.
Safety first: a leak detector pinpoints a leak; it does not continuously guard an occupied space — pair it with an area or personal monitor for that. And a gas detector alarms, it does not protect: in an IDLH or oxygen-deficient atmosphere you must evacuate and use supplied-air or an SCBA, because a monitor is not a substitute for respiratory protection. A combustible leak is also a fire and explosion risk; eliminate ignition sources and confirm the detectable gases on the listing.
What the TopTes PT520A listing documents
From the published specs: an affordable combustible gas leak detector; a 17-inch gooseneck probe; audible tick-rate and visual indication that climb near a leak; and coverage of natural gas, propane and methane. These are true combustible gas leak detector and gooseneck leak sniffer credentials in a natural gas leak detector. Confirm the detectable gases on the listing.
How the TopTes PT520A compares to other gas detectors
For a color-display combustible sniffer, the TopTes PT-830S; for a pocket %LEL combustible sniffer, the TopTes PT210S; for a refrigerant sniffer, the TopTes RT-389; for a broad catalytic combustible sniffer, the Forensics Gas Leak Detector; and for a fixed combustible-area monitor, the Forensics EX LEL Wall-Mount. The best gas leak detector guide and the combustible detector vs leak detector guide help you choose.
Choosing the right detector
Match the target gases, probe reach, and budget to your job. Browse the gas detectors, gas leak detectors, and combustible gas detectors collections; for area and personal safety monitoring, the area gas monitors and personal gas detectors collections; and for the leak-versus-monitor decision, the 4-gas vs single-gas guide and the calibration accessories collection.
Where it fits by job and crew orders
The PT520A suits plumbers, gas fitters, and HVAC and facility crews who want an affordable combustible sniffer on every truck for natural-gas and propane leak checks — see the gas detection guide and the portable gas detectors collection for the safety monitors a crew also carries. Its low price makes it easy to equip a whole fleet, and the long gooseneck reaches the awkward joints where leaks hide. Confirm the detectable gases on the listing, keep the probe tip clean, and replace the sensor at its service interval. For crew orders, quantity purchasing runs through a free Amazon Business account — volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations, with the walkthrough linked in our footer.
Frequently asked questions
What is the TopTes PT520A?
An affordable combustible gas leak detector with a 17-inch gooseneck probe and audible and visual alarms for natural gas (methane), propane and butane.
What gases does it detect?
Combustible gases such as natural gas (methane), propane and butane. Confirm the full list of detectable gases on the listing for your application.
What does the gooseneck do?
The long 17-inch gooseneck bends and holds its shape to reach behind and under appliances, fittings and tight spaces where a short rigid probe cannot, so you can trace a leak into awkward spots.
Is a leak detector the same as a gas monitor?
No - a leak detector pinpoints a leak; it does not tell you whether the air in a space is safe to breathe. For that you need an area or personal gas monitor. Confirm your program's requirements.
Is it a substitute for respiratory protection?
No - a leak detector is a tool for finding a leak, not respiratory protection. In a hazardous atmosphere you must use the correct respiratory protection. Confirm your program's requirements.
How does it indicate a leak?
The listing states an audible tick-rate and visual indication that climb as the probe nears the leak, so you follow the rising signal to the source. Confirm the indicators on the listing.
Is it good value for a fleet?
The listing positions it as the value workhorse, affordable enough to put in every truck, with a large review base. Confirm the price and features on the listing.
How is it powered?
Confirm the power source and run time on the listing; many value sniffers use replaceable batteries for field convenience.
Who is it for?
Plumbers, gas fitters, HVAC techs and facility crews who want an affordable combustible sniffer on every truck for natural-gas and propane leak checks.
How do I use it to find a leak?
Move the probe slowly along suspected joints and connections; when the tick-rate climbs, narrow your search to pinpoint the exact source. Confirm the procedure on the listing.
How do I care for it?
Keep the probe tip clean, replace or charge the power source as needed, store it per the manual, and replace the sensor at its service interval to keep it responsive.
How do I order for a crew?
Quantity purchasing runs through a free Amazon Business account - volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations. The bulk-ordering walkthrough is linked in our site footer.
Brand / Vendor
TopTes
Model / SKU
PT520A
Product Type
Gas Leak Detector
Price
$42.49 (Amazon)
Rating
4.6 / 5 — 3848 Amazon ratings
Availability
Check current availability on Amazon
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Verified Buyer Reviews
Customer Reviews
★★★★★4.6 / 5· 3,848 ratings on Amazon
★★★★★
Worked Great
It worked great to locate a very small LP leak. Had a new furnace installed and could faintly smell gas from time to time. Tried soapy water and leak detection liquid from plumbing supply house but couldn't find it. Bought the PT520A and started checking the gas joints and found the leak within two minutes. It was in a connection under the gas valve that I couldn't really get to with my detection solutions. The PT520A is very easy to use and clearly tells you when gas is detected. It is basic. There is no readout telling you the concentration of gas but the audible alarm and bar graph give you a general idea. In my case it worked very well to locate the leak and is worth the money. I would recommend it for a cheap detection devise for around the house or camper. And yes, I did call the furnace installer and they responded within 2 hours to correct the issue.
Verified Purchaser · March 6, 2 · ✓ Amazon Verified Purchase
★★★★★
Nice little gadget to have for double checking your gas line work
This thing is Awesome. Works as Advertised and detected my methane natural gas leak test no problem. Only had it for a day so cant say anything about longevity but for the here and now it does what its supposed to.
Verified Purchaser · June 14, 2 · ✓ Amazon Verified Purchase
★★★★★
great product
works great. tested it with lighter, easy to use
Verified Purchaser · May 23, 20 · ✓ Amazon Verified Purchase
★★★★☆
Works good but one CAUTION.
Works great.CAUTION WITH BATTERY COVER SCREW!!The battery cover screw is not captured. So it can easily get lost. It took me a few minutes with a nylons covered vacuum hose to find it. (-1 star)Other than that it is simple to use. I have it for my RV. We smelled gas and order one, after years of putting it off. I quickly found the leak before it arrived (Gkid/toddler turned knob on stove). But I still want one, to check leaks around tanks, shut off valves, etc. tested it in a col scenarios and it detected them quickly. I'll use it periodically around the RV to ensure the precious LP is not freeing itself! 😄
Verified Purchaser · April 5, 2 · ✓ Amazon Verified Purchase
★★★★★
It can be a lifesaver.
This thing saved our butts. We had a slow leak left after the generator was installed but didn't know it at first. Had a few people say they smelled gas outside. I couldn't be sure, so I bought this, and it detected multiple leaks along the line with accuracy and sensitivity. The gas company came out and fixed their side, and the plumbers came back to do theirs. But if I hadn't bought this tool, who knows what could have happened. Lifesaver.
Verified Purchaser · April 27, · ✓ Amazon Verified Purchase
★★★★★
Just what I needed
Owning an older rig we're definitely wondering how our fuel lines have been. Decided to buy this unit and try to see if make sure there's no leaks. Works well. I know it works instantly as I tried it with a cigarette lighter and it went off instantly as well as turning on the propane stove without lighting it. Very good instructions, seems well built.
Verified Purchaser · June 21, 2 · ✓ Amazon Verified Purchase
★★★★★
Effective, accurate, and a must for homeowners!
This was a lifesaver, literally. We had occasionally smelled gas for years - had it checked early on and was told that there was no leak, so we've just ignored it. A couple months ago, I started having breathing issues and assumed my asthma was just flaring up (began prescription inhaler) but started losing my voice as well. After a few weeks of this, I happened to smell the gas again and decided to order this detector - if nothing else, it would be good to have on hand.Upon delivery, I tested the connection to our gas logs. The device started screaming as soon as I put the sensor beside the connection point. It didn't do much "around" the logs, but it went crazy at the connection itself. I called the gas company and they sent someone out - his expensive tester confirmed there was a leak! It took a couple of weeks, but I was able to stop using the prescription inhaler and everything returned to normal - we work from home and were being exposed 24/7. This gas detector is incredibly effective and can literally save your life!This was worth EVERY PENNY and more - this is a "must have" for every house with gas lines/appliances.
Verified Purchaser · February 1 · ✓ Amazon Verified Purchase
★★★★★
Works great - Just as described
We bought this because at times we could smell a strange odor in our garage. We recently had a new gas water heater installed so we thought that it might be a gas leak. This detector didn’t detect a gas leak. Turns out we were smelling a dead bird behind a cabinet. We tested the detector on our gas stove just to make sure it worked and the alarm went off immediately.
Verified Purchaser · May 26, 20 · ✓ Amazon Verified Purchase
Showing 8 of 3,848 Amazon reviews.
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