Data as of Jul 25, 2026 · Based on 319 AI responses from ChatGPT Search and Google AI Mode · See how Parse measures this
Brands AI recommends here
The top pick for general home use due to its proven sensor reliability, clear voice alerts, and intuitive smartphone integration, making it a dependable choice for most households regardless of other smart gear.
An excellent choice for budget-conscious buyers who need reliable smart alerts. These detectors offer a long, 10-year battery life and easy wireless setup, providing a high-value option for monitoring multiple rooms economically.
Best for those who already use a security system. Its primary strength is deep integration with centralized professional monitoring, ensuring someone is always alerted to potential danger in the home.
First AlertSource | Citation share |
|---|---|
 Best smart smoke detectors in 2025 | Tom's Guidehttps://www.tomsguide.com/us/best-smart-smoke-detectors%2Creview-4472.html | 5.9% |
 The Best Smart Smoke Detector | Tested & Rankedhttps://www.techgearlab.com/topics/smart-home/best-smart-smoke-detector | 3.8% |
 Best Smoke and Carbon Monoxide Detectors of 2026 - Consumer Reportshttps://www.consumerreports.org/home-garden/smoke-carbon-monoxide-detectors/best-smoke-and-carbon-monoxide-detectors-of-the-year-a9237799621/ | 3.6% |
 3 Best Smart Smoke Carbon Monoxide Detectors and Monitors of 2026 - Reviewedhttps://www.reviewed.com/smarthome/best-right-now/best-smart-smoke-carbon-monoxide-detectors-alarms-and-monitors | 3.5% |
Smart Smoke & Carbon Monoxide Alarms | Smart Fire Detectionhttps://www.firstalert.com/collections/smart-smoke-carbon-monoxide-alarms | 2.9% |
 The Best Carbon Monoxide Detectors for Detecting Deadly ...https://www.cnet.com/home/security/best-carbon-monoxide-detector/ | 2.7% |
Best Smoke Detectors and Dual Alarms for 2026: Lab Testedhttps://www.cnet.com/home/security/best-smoke-detector/ | 2.7% |
 Place Any Space Smart Smoke and Carbon Monoxide Detector review | PCWorldhttps://www.techhive.com/article/583050/best-smart-smoke-detector.html | 2.3% |
 What are the best hardwired smart smoke and CO detectors out there ...https://www.reddit.com/r/smarthome/comments/1lqyv75/what_are_the_best_hardwired_smart_smoke_and_co/ | 1.9% |
 The Best Smoke Detectors (2026) - Business Insiderhttps://www.businessinsider.com/guides/home/best-smoke-detector | 1.4% |
The [Kidde RGCUDR-RW Smart Smoke and CO Detector Go to product viewer dialog for this item. ](https://www.homedepot.com/p/Kidde-AA-Battery-Powered-Smart-Smoke-and-CO-Detector-Ring-App-Enabled-Wireless-Interconnect-Voice-Alerts-RGCUDR-RW-21033910/340313465?source=shoppingads&locale=en-US&fp=ggl&srsltid=AfmBOooSMWgNh7kmStUyhIdRhqV3A3qCNjAXoRP-pnEK6AAH56hiylcbRrk) is the best overall smart smoke and carbon monoxide detector , priced at about $70 with reliable dual-hazard sensing and mobile alerts.
Top Smart Smoke & CO Detectors
| Model | Average Price | Power Source | Smart Integration |
|---|---|---|---|
| Kidde RGCUDR-RW | $70 | AA Batteries | Ring App |
| X-Sense XP0J-iA | $37 | Hardwired (AC) + Battery | Wi-Fi App |
| First Alert Onelink Safe & Sound | $249 | Hardwired | Apple HomeKit & Alexa |
Key Features to Consider
If you tell me your preferred smart home system (like Apple HomeKit, Google Home, or Ring) and whether you need hardwired or battery-powered units, I can narrow down the best option for your home.
If you want the best smart smoke + carbon monoxide (CO) detector for a Canadian home in 2026, my pick is the Kidde Smart Smoke & CO Alarm, particularly if you use Ring/Alexa or want a good balance of safety, smart features, and price.
$114.00
| Pick | Best for | Why |
|---|---|---|
| Kidde Smart Smoke & CO | Best overall | Smoke + CO, phone alerts, smart-home integration, no required subscription |
| First Alert SC5 | Google/Nest homes | Designed as the successor to Nest Protect and integrates with Google Home |
| Google Nest Protect | Best features | Excellent voice/location alerts, self-testing, split-spectrum sensing—but it's discontinued and increasingly expensive |
| First Alert Onelink | Apple Home users | HomeKit support and smart-home integration |
Why I'd choose Kidde: Current 2026 comparisons increasingly favor it as the practical choice. Consumer Reports also has multiple Kidde combination alarms among its better-performing tested models.
The Google Nest Protect is still arguably the most polished smart detector ever made, with particularly good voice warnings, room identification, self-testing, and smoke/steam discrimination. However, Google discontinued it in 2025, so buying one now means dealing with older stock and potentially inflated prices.
$125.00
The First Alert SC5 is the more interesting Google-oriented replacement, but current Canadian pricing is considerably higher, and its user ratings in the shopping results I found are noticeably weaker than the Kidde's.
$114.00
$169.99
$125.00
$110.00
My recommendation: If you're buying several for your house, I'd go Kidde Smart Smoke & CO rather than paying the premium for SC5/Nest Protect.
One thing I'd verify before ordering in Canada is the Canadian ULC certification and the exact model number, because smoke/CO alarms are life-safety equipment and U.S. versions aren't necessarily appropriate for Canadian installation requirements.
If you tell me whether you use Apple Home, Google Home, Alexa/Ring, or none, I can narrow it down to the single best model for your setup and find the best Canadian price.
The Kidde Smart Smoke & Carbon Monoxide Detector Go to product viewer dialog for this item. is widely considered the best all-around smart combination alarm for most homes. With tech giants changing their focus—such as Google officially discontinuing its popular Nest Protect product line —traditional fire safety leaders like Kidde and First Alert offer the most reliable, up-to-date hardware with advanced phone connectivity.
The best options vary depending on your smart home ecosystem and how your home is wired:
Top Smart Smoke & CO Detectors
Recognized by reviewers at Wirecutter as the top current pick.
Uses a highly accurate photoelectric sensor paired with an electrochemical CO sensor to dramatically reduce nuisance alarms from cooking.
Features voice alerts that call out the specific hazard and room location rather than just sounding a generic beep.
Connects directly to Wi-Fi to push phone alerts and can wirelessly interconnect with older, non-smart Kidde alarms to update your entire house.
Available in two tailored variations: a standard smart version for Alexa/Google Home, and an official Ring App-Enabled model (RGCUDR-RW) perfect for Ring security setups.
The premier choice if you are transitioning away from discontinued Nest hardware or want seamless Apple HomeKit, Alexa, and Google Assistant utility.
Provides a direct partnership framework with Google Home setups and integrates with existing smart infrastructure smoothly.
Delivers "Precision Detection" technology to screen out kitchen steam while prioritizing real, smoldering fires.
Offers robust voice alarms detailing exact emergency locations and comes in both hardwired or battery-operated designs.
Rated by tech review testers as the best value configuration for full-home coverage.
Operates on a dedicated wireless RF mesh system using a central SBS50 base station, meaning if one alarm triggers, every unit in the house sounds off simultaneously.
Saves you money on complex electrical work via an easy screw-in battery setup that still pushes instant remote app notifications.
Lets you safely test or silence the loud 85-decibel sounder directly through your phone app instead of climbing on chairs.
Quick Comparison
| Feature | Kidde Smart Series | First Alert SC5 | X-Sense SC07-MR Go to product viewer dialog for this item. |
|---|---|---|---|
| Power Options | Hardwired or AA Battery | Hardwired or 6-Battery | Lithium Battery |
| Primary Ecosystem | Ring, Alexa, Google Home | Apple HomeKit, Alexa, Google | Independent / X-Sense App |
| Voice Alerts | Yes | Yes | No (Audible Siren Only) |
| Best For | Overall reliability & Ring users | Multi-platform smart homes | Multi-room value bundles |
If you'd like to narrow this down, let me know:
If you want the best smart smoke + carbon monoxide detector in 2026, I’d pick the First Alert SC5 Smart Smoke & CO Alarm for a new installation.
$129.99
Why I like it:
The hardwired SC5 is currently about $130, while the battery version is about $130 direct from First Alert.
$74.97
This is the one I'd choose if price matters or you're already using Kidde/Ring/Alexa. It provides app notifications, voice alerts and interconnection, and is currently around $75 for the hardwired model. Consumer Reports also ranks Kidde's smart combination detector highly.
$149.00
It's still an excellent detector—but I wouldn't buy one new in 2026. Google discontinued Nest Protect production in 2025, so you're essentially buying remaining inventory. Existing units continue to work, but I'd rather invest in the current First Alert SC5 ecosystem for a new installation.
| Detector | Best for | My take |
|---|---|---|
| First Alert SC5 | Best overall | ⭐⭐⭐⭐⭐ |
| Kidde Smart | Value / Ring / Alexa | ⭐⭐⭐⭐½ |
| Nest Protect | Existing Nest owners | ⭐⭐⭐⭐ |
| X-Sense smart models | Lots of interconnected alarms | ⭐⭐⭐⭐ |
One important caveat: smart connectivity shouldn't be the deciding factor for life safety. Sensor performance, proper placement, interconnection, and having the right type of smoke sensing are more important than phone notifications.
If you tell me (1) whether your existing alarms are hardwired or battery, (2) whether you use Apple Home, Google Home, Alexa/Ring, or none, and (3) how many detectors you need, I can tell you exactly which model I'd buy and how I'd set up the whole house.
The Kidde Smart Smoke & Carbon Monoxide Alarm Go to product viewer dialog for this item. is widely rated by experts as the best overall smart smoke and CO detector on the market. It features exceptionally fast photoelectric detection and robust app control without locking you into a single ecosystem.
Because Google officially discontinued the iconic Nest Protect line, the smart home landscape has shifted toward strong brand partnerships with companies like Ring and Google Home.
Top Smart Smoke & CO Detectors
| Model | Best For | Power Source | Ecosystem / App | Key Features |
|---|---|---|---|---|
| [Kidde Smart Smoke & CO Alarm Go to product viewer dialog for this item. ](https://www.homehardware.ca/en/talking-smart-smoke-carbon-monoxide-detector-with-indoor-air-quality-detector-battery-backup/p/3616719) | Best Overall | Hardwired or Battery | Kidde App, Alexa, Google Home | Photoelectric sensor, voice alerts, optional indoor air quality monitoring. |
| [First Alert SC5 Smart Alarm Go to product viewer dialog for this item. ](https://www.firstalert.com/collections/smart-smoke-carbon-monoxide-alarms) | Google / Nest Homes | Hardwired or 10-Yr Battery | Google Home, First Alert App | Full Google Nest app integration, customized voice alerts, Bluetooth hush proximity safety feature. |
| Kidde Ring-Enabled Smart Alarm | Ring & Alexa Users | Hardwired or Battery | Ring App, Amazon Alexa | Native Ring UI alerts, no extra hub required, optional $5/mo professional fire dispatch monitoring. |
| X-Sense SC07-MR | Best Budget / Value | 10-Year Sealed Battery | X-Sense App, Home Assistant | RF wireless interconnectivity, low per-unit pricing, stable standalone Wi-Fi setup. |
Important Buying Considerations
To help narrow down the choices, tell me:
If you want the best smart smoke + carbon monoxide detector in 2026, I’d pick the First Alert SC5 Smart Smoke & CO Alarm—especially if you use Google Home/Nest.
$129.99
| Pick | Best for | Why |
|---|---|---|
| First Alert SC5 | Best overall / Google Home | Smoke + CO, smartphone alerts, voice alerts, Google Home integration, and designed as the successor to Nest Protect |
| Kidde Smart Smoke + CO | Best value | Roughly $75, smart phone alerts, voice alerts, and interconnect capability |
| Nest Protect | Best features, if you can find one | Still arguably the best-designed detector, with excellent voice/location alerts and split-spectrum sensing—but Google discontinued it, so I wouldn't start a new installation with it |
| X-Sense SC07-WX | Best lower-cost option | Smart app alerts, smoke + CO, and available in multipacks |
$129.99
$74.97
$79.99
$149.00
One important caveat: I wouldn't automatically buy the SC5 despite its strong feature set. Current owner feedback is mixed, including reports of false alarms, while the Kidde has also received some complaints about reliability. www.reddit.com The SC5 is nevertheless the closest current equivalent to Nest Protect and meets UL 217/UL 2034 standards.
If you tell me (1) hardwired or battery, (2) Google Home/Alexa/Ring/Apple, and (3) how many detectors you need, I can narrow it down to the best exact model and cheapest current option.
When looking for the best smart smoke and carbon monoxide (CO) detector, the top choices balance reliable dual-sensor tech (photoelectric and electrochemical), clean app integrations, helpful voice alerts, and nuisance-silencing features.
The top-ranked smart smoke and CO detectors on the market fit different ecosystem and installation needs:
Kidde Smart Smoke + Carbon Monoxide Alarm (Best Overall / Top Pick)
Widely recommended by Wirecutter and expert testers, Kidde’s hardwired and battery-backup smart units deliver fast, dependable smoke and CO sensing. They feature clear voice warnings ("Fire!" or "Carbon Monoxide!") and let you easily silence false kitchen alarms or check battery status right from the Kidde app without needing to wave a broom at the ceiling.
Google Nest Protect (Best for Smart Ecosystems & Polish)
Though aging, the 2nd-generation Nest Protect remains a favorite for its intuitive color-coded status ring, gentle "Heads-Up" pre-alarms for minor kitchen smoke, motion-activated pathlights, and seamless app notifications. (Note: Keep in mind that Google has wound down manufacturing of this line, so units purchased now will have a ticking clock toward their standard 10-year expiration date.)
Kidde Hardwired Ring-App-Enabled Alarm (Best for Ring Ecosystems)
If you already run a Ring security setup, this model integrates directly into the Ring app. It gives you fast mobile alerts and offers an optional 24/7 professional monitoring add-on through Ring so emergency services can be dispatched if an alarm goes off while you're away.
X-Sense SC07-MR / SC07-WX (Best Budget / Value Interconnected Option)
For whole-home protection on a budget, X-Sense offers wireless interconnected 2-in-1 combo alarms with 10-year sealed lithium batteries. When one unit triggers, they all sound, and the app allows quick source identification to see which room is affected. (Check local code certifications, as some models use ETL rather than strict UL listings, though both meet safety standards).
To help narrow down the ideal choice for your home, tell me:
If you want the best smart smoke + carbon monoxide detector today, I’d pick Kidde’s Smart Smoke & CO Alarm rather than buying an old Google Nest Protect.
$74.97
Why I’d choose it:
Kidde's newer smart alarms are particularly attractive now because Google discontinued the Nest Protect, so I wouldn't buy a new Nest Protect unless you specifically want an older/discontinued product.
$45.99
$139.99
$129.99
$69.97
| Pick | Best for |
|---|---|
| Kidde Smart Smoke + CO | ⭐ Best overall |
| X-Sense XP0A-MR | Multiple interconnected alarms / value |
| First Alert SC5 | Nest Protect replacement |
| Kidde battery model | Homes without existing wiring |
SafeWise's 2026 testing also puts X-Sense's SC07-W near the top overall, particularly for its dual smoke/CO sensors and wireless interconnection.
One important distinction: if you already have hardwired alarms, tell me how many detectors you need and whether yours are hardwired or battery-powered. I can recommend the exact model/pack and make sure the alarms will interconnect properly.
If you're buying a smart smoke and carbon monoxide detector today, these are the strongest options depending on your smart home setup.
$74.97
This is my top recommendation for most homeowners because it offers:
It has also been recognized in independent testing and reviews as one of the best current smart detectors.
$129.99
Pros:
The downside is price—about $130 each.
$99.99
Good choice if you want:
X-Sense has built a good reputation for reliable detectors at competitive prices.
I would choose:
They integrate well with existing interconnected alarm systems.
I would choose:
Both avoid running new wiring while still providing phone alerts.
If you were considering the Nest Protect, it's no longer the best choice. Google has moved away from it, and newer products from Kidde and First Alert have effectively become the recommended replacements.
For most homes, I'd buy the Kidde Smart Smoke & Carbon Monoxide Detector. It strikes the best balance of:
One final tip: regardless of brand, install detectors inside every bedroom, outside each sleeping area, and on every level of your home, and replace the entire unit when it reaches its expiration date (typically 10 years). Consumer Reports continues to emphasize that proper placement and timely replacement are just as important as choosing a top-rated model.
The "best" smart smoke and carbon monoxide (CO) detector depends heavily on your existing smart home ecosystem and whether your home uses hardwired or battery-powered setups.
The top-rated smart smoke and CO detectors on the market excel in specific categories:
To help narrow down the ideal option for your home, tell me:
