← All product categories

Top 3 Best Non-Toxic CO & Smoke Alarms

3 products independently rated for safety, effectiveness, and value, ranked and reviewed by PollutionProfile.

Effectiveness (1–5)
Safety (1–5)
Affordability (1–5)
Certifications (1–5)
Overall score (0–100)
First Alert
1

First Alert

Top Pick

Plug-In CO Alarm with Battery Backup

$20–$28~$4/yr
Rating breakdown
Safety
Excellent5/5
Effectiveness
Excellent5/5
Affordability
Excellent5/5
Certifications
Excellent5/5

UL Listed

Plug-and-forget CO protection with battery backup for outages. One on every level and outside each sleeping area is the code standard. (Provisional rating.)

100/100
Available on AmazonBuy on Amazon
Kidde
2

Kidde

Smoke + CO Combo Alarm (AA battery)

$40–$55~$5/yr
Rating breakdown
Safety
Excellent5/5
Effectiveness
Excellent5/5
Affordability
Good4/5
Certifications
Excellent5/5

UL Listed

Two protections in one ceiling spot — the practical pick for bedrooms and hallways where you'd otherwise mount two devices. (Provisional rating.)

95/100
Available on AmazonBuy on Amazon
X-Sense
3

X-Sense

SC07 Smart Smoke + CO Combo

$30–$40~$4/yr
Rating breakdown
Safety
Good4/5
Effectiveness
Excellent5/5
Affordability
Good4/5
Certifications
Good4/5

UL Listed

Sends phone alerts when the alarm sounds and reminds you when sensors expire — solves the dead-battery, expired-unit failure mode. (Provisional rating.)

86/100
Available on AmazonBuy on Amazon

As an Amazon Associate, PollutionProfile earns from qualifying purchases. This does not affect our ratings. Products are scored independently based on safety, effectiveness, and certifications.

We use cookies and analytics to understand how people use PollutionProfile and improve the experience. We never sell your data. Learn more.