Safest thermostats/thermometers/sensors, ranked

8 brands ranked by a transparent safety score: CPSC recall history (weighted by severity and recency) balanced against safety certifications. This ranks brands by safety record, not product quality — and a recall isn't proof a brand is unsafe, nor is its absence proof it's safe.

1. #1
   Load Systems International 1 recall(s)
   96

   Safety rank

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2. #2
   CPSC, Vernier Software & Technology 1 recall(s)
   95

   Safety rank

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3. #3
   Comverge 1 recall(s)
   91

   Safety rank

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4. #4F
   Fuel Sentry 1 recall(s)
   91

   Safety rank

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5. #5
   GE Infrastructure Sensing 1 recall(s)
   91

   Safety rank

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6. #6
   iDevices 1 recall(s)
   91

   Safety rank

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7. #7
   Intermatic 2 recall(s)
   84

   Safety rank

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8. #8
   Siemens Industry 2 recall(s)
   61

   Safety rank

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Ranking combines public CPSC recall data with curated certification listings. The score is a safety signal, not a guarantee, and reflects brand-level (not model-level) data. Confirm current recall and certification status before buying. Some links are affiliate links — see our disclosure.