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TopTes PT520A Gas Leak Detector — 17-in Gooseneck (Natural Gas, Propane, Methane)
$42.49
Final price set by Amazon · may vary
Editor’s note: the TopTes PT520A gas leak detector is one of the instruments we curate in our Gas Leak Detectors buyer’s hub. Compare it with the Klein Tools ET120 below before you order. TopTes PT520A Gas Leak De...
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Editor’s note: the TopTes PT520A gas leak detector is one of the instruments we curate in our Gas Leak Detectors buyer’s hub. Compare it with the Klein Tools ET120 below before you order.
TopTes PT520A Gas Leak Detector — 17-Inch Gooseneck Sniffer
The TopTes PT520A gas leak detector is the value workhorse — a gas leak detector with a 17-inch gooseneck for combustible gases such as natural gas (methane), propane and butane and a huge review base. Affordable enough to put in every truck, it traces the leak source without claiming to measure air safety.
Jump to: Features · Specs · What it detects · Comparison · FAQ
The TopTes PT520A is an affordable combustible gas leak detector with a 17-inch gooseneck probe and audible/visual alarms for natural gas, propane and methane.
Key features
- Traces natural gas, propane, methane and butane leaks to the source
- Long 17-inch gooseneck reaches behind and under appliances and fittings
- Audible tick-rate and visual indication that climb near the leak
- Our best-selling leak detector — 3,800+ ratings at 4.6 stars
- Runs on AA batteries (three included) — grab-and-go simplicity
- Affordable enough to keep one in every truck and toolbox
Pros
- Lowest-cost long-gooseneck sniffer
- Huge 3,800+ review track record (4.6)
- 17-inch reach
- Simple AA-battery operation
- Great value for trucks/tool cribs
Cons
- Locates leaks — not an atmosphere safety monitor
- Combustible gases only
- Tick-rate readout only (no concentration display)
- Not for confined-space entry
Specifications
| Specification | Detail |
|---|---|
| Finds | Natural gas, propane, methane, butane |
| Probe | 17-inch gooseneck |
| Alarm | Audible tick-rate + visual |
| Power | AA batteries (3 included) |
| Use | Home, RV and light-industrial |
| Color | Orange |
Where the TopTes PT520A fits
- Natural-gas and propane leak checks
- Appliance, RV and grill connections
- Plumbing and HVAC gas lines
- Truck/toolbox spare sniffer
- Quick recheck after a repair
What the TopTes PT520A detects (and what it doesn’t)
It finds combustible gases such as natural gas (methane), propane and butane — not refrigerants, CO or oxygen. For refrigerant work see the TopTes RT-389; for CO the Carbon Monoxide Alarms & Detectors range. It locates leaks; it does not measure whether a space is safe — use a Portable Gas Detectors monitor for entry decisions. The long gooseneck and tick-rate make it easy to sweep a line and pinpoint the joint.
Cross-shopping? This unit sits in our Gas Leak Detectors hub alongside Klein Tools ET120, Forensics Gas Leak Detector, TopTes PT-830S, TopTes PT210S. For other gas-detection form factors see Portable Gas Detectors, Personal & Wearable Gas Detectors, Fixed Gas Detection Systems, or browse the full Gas Detectors range.
TopTes combustible leak detector family compared
| Model | Probe | Display / readout | Power | Street price |
|---|---|---|---|---|
| PT210S | 4 in fixed | %LEL bar + alarm | AA batteries | ~$32 |
| PT520A | 17 in gooseneck | Tick-rate + alarm | AA batteries | ~$42 |
| PT-830S | 14.5 in flexible | TFT color, 0-10000 ppm | Rechargeable | ~$96 |
- Choose the PT520A for the best value long-gooseneck combustible sniffer with a massive review record.
- Step up to the PT-830S for rechargeable power and a color concentration display.
- Go cheaper/smaller with the PT210S 4-inch %LEL sniffer.
Frequently asked questions
What does the TopTes PT520A detect?
Combustible gases — natural gas, propane, methane and butane. It does not detect refrigerants, CO or oxygen.
How long is the PT520A gooseneck?
17 inches and flexible, giving excellent reach behind and under appliances and along fittings.
Is the PT520A rechargeable?
No — it runs on AA batteries (three included). For a rechargeable model with a color display, see the PT-830S.
Why is the PT520A so popular?
It pairs a long gooseneck and reliable tick-rate alarm with a very low price, which is why it has over 3,800 ratings and is a common truck/toolbox staple.
Can it tell me if a space is safe to enter?
No — it locates leaks only. Measure entry conditions with a Portable Gas Detectors monitor or Personal & Wearable Gas Detectors clip.
How do I pinpoint the leak?
Sweep slowly along the line; the audible tick-rate speeds up and the visual indicator climbs as you approach, peaking at the leak.
Does it show the gas concentration?
It uses a tick-rate and visual indicator rather than a numeric display. For a concentration readout, choose the PT-830S.
Does it detect refrigerant or CO?
No — for refrigerant use the TopTes RT-389; for CO see the Carbon Monoxide Alarms & Detectors range.
Will it find a propane or grill leak?
Yes — it detects propane and butane, which makes it handy for grills, RVs and LP appliances as well as natural-gas lines.
Is it in stock and how does it ship?
Use the Amazon buy button for current availability and delivery timing through our fulfillment partner.
How does it compare to the Klein ET120?
The Klein ET120 adds a numeric ppm range and trusted-brand build at a higher price; the PT520A is the budget long-gooseneck option.
Can I use it for confined-space work?
Only to find a leak — entry still requires atmospheric testing with a Portable Gas Detectors 4-gas instrument.
Ready to order the TopTes PT520A gas leak detector? Add it to your cart above, or check the current Amazon price below. Compare it against the rest of our Gas Leak Detectors lineup before you buy.
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Why trust this TopTes page? WC Safety is an independent industrial safety-equipment retailer serving safety managers, procurement teams and field supervisors. The specifications here are taken from the manufacturer’s published listing for TopTes PT520A and framed against OSHA 29 CFR 1910.146 and OSHA Permissible Exposure Limits. Disclosed: WC Safety earns Amazon affiliate commissions on outbound clicks; that does not influence the specs shown or our lineup.
By Steven Eaton, WC Safety Editorial — Industrial safety-equipment desk · specialization: atmospheric monitoring, gas detection and instrument selection.
Last updated: · Sources reviewed: manufacturer product listing & specifications, OSHA 29 CFR 1910.146, OSHA Annotated PEL tables, ACGIH Threshold Limit Values.
Editorial standard: Zero sponsored listings. No manufacturer input. Specs verified against the manufacturer’s published data.
Last updated: · Sources reviewed: manufacturer product listing & specifications, OSHA 29 CFR 1910.146, OSHA Annotated PEL tables, ACGIH Threshold Limit Values.
Editorial standard: Zero sponsored listings. No manufacturer input. Specs verified against the manufacturer’s published data.
How this page is maintained. Specifications and pricing are reviewed against the manufacturer’s current listing and re-checked whenever the lineup changes. Gas-detection guidance follows OSHA 1910.146 and OSHA PELs, cross-referenced with ACGIH TLVs.
Disclosure. WC Safety participates in the Amazon Associates Program and earns commissions on qualifying purchases through outbound links on this page (tag wcsafety04-20). We are not sponsored by any instrument manufacturer. This page is buyer guidance, not medical, legal or regulatory advice — confirm gas-detection requirements for your site against the applicable OSHA standard and, for commercial monitoring programs, a Certified Industrial Hygienist (CIH).
Brand / Vendor
TopTes
Model / SKU
B0BTM3G8DK
Product Type
Gas Leak Detector
Price
$42.49 (Amazon)
Rating
4.8 / 5 — reviews
Availability
✓ In Stock on Amazon
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