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How RenoRanked scores combustible gas detectors

Each product on the combustible gas detectors scorecard gets one 0–100 score from the weighted formula below, computed only from published manufacturer specs and dated retailer records; we do not physically test products. The current table covers 20 products across 8 recorded spec fields, refreshed July 1, 2026.

Scale
0-100
Products
20
Fields
8
Updated
July 1, 2026

The weights

Combustible Gas Detectors scoring dimensions, weights, definitions, and data sources
DimensionWeightDefinitionData source
Detects Methane18%The detects methane score is binary: a listed yes earns full marks, while a no or a missing listing earns zero.Detects Methane
Detects Propane16%The detects propane score is binary: a listed yes earns full marks, while a no or a missing listing earns zero.Detects Propane
Detects Combustible14%The detects combustible score is binary: a listed yes earns full marks, while a no or a missing listing earns zero.Detects Combustible
Probe Included13%This dimension checks whether probe included is listed; yes earns full credit, while no or missing earns zero.Probe Included
Sensitivity Ppm12%This dimension reads listed sensitivity ppm from 5 to 5,000; higher numbers score better, while a missing value scores neutral.Sensitivity Ppm
Alarm11%Across the catalog, listed alarm goes from 80 dB to 85 dB; higher numbers score better, while a missing entry stays neutral.Alarm
Response Time Sec9%Across the catalog, listed response time sec goes from 1 to 60; lower numbers score better, while a missing entry stays neutral.Response Time Sec
Power Source7%The power source scale runs Battery up to Plug In; entries nearer Plug In earn the most credit, while unlisted ones stay neutral.Power Source
Total100%All dimensions above sum to the full score.Published score total
Combustible Gas Detectors detects methane score breakdown for 5 ranked products by weighted scoring dimension. The top five combustible gas detectors are separated by 12 points; sensitivity ppm is the tiebreaker. Score contribution by dimension Detects Methane (18%)Detects Propane (16%)Detects Combustible (14%)Probe Included (13%)Sensitivity Ppm (12%)Alarm (11%)Response Time Sec (9%)Power Source (7%) 0255075100 #1 Extech EZ40 EzFlex Combustible Gas Detector: 97/100 #1 Extech EZ40 EzFlex… 1816141312119 97/100 #2 Reed Instruments R9300 Combustible Gas Leak Detector: 85/100 #2 Reed Instruments R9300… 18161413119 85/100 #3 CPS LS790B Combustible Gas Leak Detector: 85/100 #3 CPS LS790B Combustible Gas… 18161413119 85/100 #4 TPI 725 Combustible Gas Leak Detector: 85/100 #4 TPI 725 Combustible Gas Leak… 18161413119 85/100 #5 Amprobe GSD600 Gas Leak Detector: 85/100 #5 Amprobe GSD600 Gas Leak… 18161413119 85/100 Combustible Gas Detectors: weight x grade, 0-100 scale. RenoRanked
  1. #1 Extech EZ40 EzFlex Combustible Gas Detector97/100Detects Methane 18 pts, Detects Propane 16 pts, Detects Combustible 14 pts
  2. #2 Reed Instruments R9300 Combustible Gas Leak Detector85/100Detects Methane 18 pts, Detects Propane 16 pts, Detects Combustible 14 pts
  3. #3 CPS LS790B Combustible Gas Leak Detector85/100Detects Methane 18 pts, Detects Propane 16 pts, Detects Combustible 14 pts
  4. #4 TPI 725 Combustible Gas Leak Detector85/100Detects Methane 18 pts, Detects Propane 16 pts, Detects Combustible 14 pts
  5. #5 Amprobe GSD600 Gas Leak Detector85/100Detects Methane 18 pts, Detects Propane 16 pts, Detects Combustible 14 pts
The top five combustible gas detectors are separated by 12 points; sensitivity ppm is the tiebreaker.

What the score bands mean

Score bands80+ strong60–79 solidBelow 60 limited fit

  • 80+: strong marks on the heaviest dimensions with few weak lines in the listed specs.
  • 60–79: competitive on most scored inputs, with at least one clearly weaker dimension.
  • Below 60: trails this field on the inputs weighted most; the product cards list exactly where.

Source hierarchy

Published manufacturer specifications rank first, dated retailer records second; marketing claims without a checkable figure are excluded from scoring. Missing values never earn invented numbers; they are labeled “not listed - neutral 50” and take the neutral 50 grade the weight definitions describe.

  1. Klein Toolsmanufacturer evidence for 12 catalog fields
  2. UEi Test Instrumentsmanufacturer evidence for 12 catalog fields
  3. RIDGIDmanufacturer evidence for 12 catalog fields
  4. General Toolsmanufacturer evidence for 12 catalog fields
  5. REED Instrumentsmanufacturer evidence for 12 catalog fields
  6. Amprobemanufacturer evidence for 12 catalog fields
  7. Bacharachmanufacturer evidence for 12 catalog fields
  8. Testomanufacturer evidence for 13 catalog fields
  9. Scored product catalog20 compared products
Combustible Gas Detectors freshness timeline showing source retrieval dates and the separate regeneration date. RenoRanked source ledger tracks combustible gas detectors with 9 retrieval records, retrieved 2026-07-01 to 2026-07-02. For combustible gas detectors, sources were retrieved 2026-07-01 to 2026-07-02; the page was regenerated 2026-07-09, a build date kept separate from the source retrieval dates. Source freshness ledger Dots are source retrieval dates; the amber marker is the separate regeneration date. Klein Tools: retrieved 2026-07-01 UEi Test Instruments: retrieved 2026-07-01 RIDGID: retrieved 2026-07-01 General Tools: retrieved 2026-07-01 REED Instruments: retrieved 2026-07-01 Amprobe: retrieved 2026-07-01 Bacharach: retrieved 2026-07-01 Testo: retrieved 2026-07-02 Scored product catalog: retrieved 2026-07-01 Regenerated 2026-07-09 2026-07-012026-07-09 Combustible Gas Detectors keeps retrieved and regenerated dates distinct.

Retrieved · Built

  1. Testo2026-07-02Source record
  2. Amprobe2026-07-01Source record
  3. Bacharach2026-07-01Source record
  4. General Tools2026-07-01Source record
  5. Klein Tools2026-07-01Source record
RenoRanked source ledger tracks combustible gas detectors with 9 retrieval records, retrieved 2026-07-01 to 2026-07-02.

Update history

  • Rankings rebuilt from the refreshed catalog: 20 combustible gas detectors re-scored on 8 published spec fields, detects methane first.

Back to the combustible gas detectors scorecard