Question 1

Which is better, Google Nest Protect or Kidde Smart Detect?

Accepted Answer

Based on our testing, the Kidde Smart Detect scores higher overall at 8.8/10. The Google Nest Protect scored 8.7/10 and the Kidde Smart Detect scored 8.8/10 in our Best Smart Smoke and CO Detectors 2026 evaluation.

Question 2

Is the Google Nest Protect worth it over the Kidde Smart Detect?

Accepted Answer

The Google Nest Protect scores 8.7/10 while the Kidde Smart Detect scores 8.8/10. The Google Nest Protect is our "Best Overall" pick in the Best Smart Smoke and CO Detectors 2026 category.

Google Nest Protect vs Kidde Smart Detect: Which to Buy?