The lifespan of the Google Nest Protect smoke detector is generally up to ten years, according to the manufacturer. This is pretty standard for smoke and carbon monoxide detectors since their sensors start degrading after that time.
One handy feature of the Nest Protect is that it'll give you a Heads-Up notification via the Nest app when it's close to the end of its life. This way, you can plan for a replacement so you're not caught off guard.
To keep your Nest Protect working well, it's a good idea to test it regularly and keep it clean from dust and debris. If you have a battery-operated model, remember to keep an eye on battery levels — the device will let you know when it's time for a change.
Our research shows that people like the app notifications and the ability to silence alarms from their phone, though these features need Wi-Fi to work.
Overall, the Nest Protect offers a solid mix of safety and smart technology, making it a reliable choice for keeping your home safe for up to a decade.
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How we researched this
Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from 1 retailer in ShopSavvy's price data, most recently seen May 13, 2025.
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More Answers
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