Nest Protect CO detector died after 9 years, what’s a good replacement since wired versions are hard to find?

Looking for a Nest Protect Replacement – Are They EOL?

I’ve had my Nest Protect (S3003LWES) for about 9 years, and the first one just died today. When I went searching for a replacement, nearly every site is out of stock on the wired version, and it’s starting to feel like these devices are basically end-of-life (EOL).

What’s the best alternative? I’m slowly moving away from Google because they have a habit of killing off products without much warning.


Update: Thanks for the recommendations! I ended up grabbing a Kidde unit (pictured below) for about $62 at Home Depot. It has a 10-year sealed battery and interconnects with other alarms, so it does the job. Not here to promote it, just wanted something simple and reliable.

Unfortunately, I’ll probably have to replace more Nest Protects soon, since they’re all close to the 10-year mark. If anyone else has a solid long-term alternative, I’d love to hear it.

Just get a standard battery-powered carbon monoxide detector. Place one near each gas appliance and in every bedroom.

Will said:
Just get a standard battery-powered carbon monoxide detector. Place one near each gas appliance and in every bedroom.

I had those before switching to Nest Protect, but I got tired of replacing the 9V batteries so often.

@Maximilian
You could go with a model that has a sealed 10-year battery. Some places now require those by law.

@Maximilian
A good option is a plug-in CO detector with a backup battery. The battery only gets used if the power goes out, so it lasts much longer. Or you could get a wired smoke/CO combo detector to replace the Nest Protect.

@Maximilian
9V batteries should last at least a year or two in most CO detectors. Were they draining faster for you?

Will said:
@Maximilian
9V batteries should last at least a year or two in most CO detectors. Were they draining faster for you?

Yeah, maybe every year or so, but with 10 detectors, it felt like I was constantly replacing batteries.

@Maximilian
After 10 years, those detectors start beeping to indicate expiration too. It would be nice if smart detectors allowed you to replace just the sensor module instead of forcing a full replacement.

@Will
Yeah, but then they wouldn’t sell as many new devices.

@Maximilian
Nest Protect uses AA lithium batteries. I replace mine about once a year. It’s pretty easy.

Stewart said:
@Maximilian
Nest Protect uses AA lithium batteries. I replace mine about once a year. It’s pretty easy.

Once a year? I’ve had mine for over three years and haven’t replaced the batteries yet.

@Alfred
Mine are in high-traffic areas, so the night light is triggered a lot. Maybe that drains the batteries faster.

I’ve seen ads for Owl Home. It seems to have similar features to Nest Protect, but I haven’t found many reviews yet. Since it’s a new company, hard to say how long they’ll be around.

@sabrina
Might just go with a standard 10-year smoke detector (preferably wired) and use a HomePod for smart notifications. After researching, there aren’t many good smart smoke alarm options. The Owl Home detectors look interesting, but it’s unclear how reliable they’ll be long-term.

@Maximilian
There are also wireless interconnected smoke detectors with built-in batteries. Those could be an option.

Since your Nest Protect was a wired version, you could replace it with any standard wired smoke/CO detector. That would be better than a battery-only option.

For CO detection, it’s also good to have at least one standalone CO detector separate from your smoke detectors. I had a cracked heat exchanger in my furnace, and my Nest Protects never went off even when a CO reading was detected by the HVAC tech.

If you’re looking for smart detectors, Kidde has a smart series available at Home Depot, but I haven’t researched them enough to know how well they work. They claim to work with Google Home.

@Lenox
Would love something that works with Home Assistant, but I’m not seeing many options.

@Lenox
I looked into the Kidde smart detectors, but the reviews were pretty bad, especially on connectivity. I ended up going with standard dumb detectors and use Google Home speakers to detect alarms. Works well enough.

I have Nest Protects in my home but bought these for a rental property due to the Nest shortages. They seem to work well, but one unit had issues and had to be replaced under warranty.

Ubiquiti is coming out with a smoke and CO detector. Just announced last week.

https://www.youtube.com/watch?v=f_g_iBtbobY