Are Monitored Smoke and CO Detectors Worth It?

What monitoring adds to a smoke or CO detector

A standard detector makes noise. A monitored detector also sends the signal to a monitoring center that can call the fire department whether or not anyone is home, awake, or conscious.

The documented flows, from provider support pages as of August 2026: when a SimpliSafe smoke detector triggers, the monitoring center calls only the first primary contact because time could be critical, and requests dispatch if that contact cannot be reached. Ring's smoke flow is the same shape: call the primary contact, dispatch the fire department if there is no answer. For carbon monoxide both providers skip the verification step entirely: SimpliSafe dispatches emergency services and calls you at the same time, with no way to cancel a CO alarm, and Ring immediately requests fire department response, then informs contacts. The asymmetry is deliberate; CO incapacitates the people who would otherwise respond to the alert.

The scenarios where this materially beats a siren-only detector: nobody home (a fire in an empty house gets a response instead of burning until a neighbor notices), occupants asleep or unable to act, and CO events where occupants may already be impaired. For the full escalation mechanics, see the burglary-side counterpart in our monitoring coverage, is professional monitoring worth it.

The fire-death data behind the decision

NFPA's research (its Smoke Alarms in US Home Fires report, covering 2018 to 2022, and its Home Structure Fires report, covering 2019 to 2023) frames the risk precisely:

1. Home fires killed an average of 2,600 civilians per year in 2019 to 2023.
2. Nearly three out of five home fire deaths (59 percent) were caused by fires in properties with no smoke alarms (43 percent) or alarms that failed to operate (16 percent). The single biggest life-safety upgrade is simply having working alarms: the death rate per 1,000 home fires is roughly 60 percent lower with working smoke alarms.
3. Timing is the monitored-detector argument. Only about one-fifth of home fires (19 percent) are reported between 11 p.m. and 7 a.m., but those fires cause nearly half of home fire deaths (48 percent). Among fatalities in homes where alarms worked, 29 percent of victims were sleeping and 15 percent were unable to act.
4. Alarms fail more than people assume. NFPA estimates an average of 19,119 home fires per year where smoke alarms should have operated but did not, causing an average of 403 deaths annually, mostly from missing, disconnected, or dead batteries.

Two honest readings of this data. First, it argues most strongly for working detectors everywhere, hardwired where possible (hardwired alarms operated in 94 percent of the fires large enough to activate them, versus 85 percent for battery-only alarms). Monitoring is a layer on top of that, not a substitute. Second, NFPA does not publish a death-rate comparison between monitored and unmonitored detectors, so nobody can honestly quote you a lives-saved percentage for the monitoring layer itself. The case for monitoring is structural (someone responds when you cannot), not a published statistic.

What it costs, as of August 2026

The monitoring layer for fire and CO is one of the cheapest recurring services in home security.

All prices are as of August 2026 from the providers' own pages. Ring's $5 a month is the cleanest number for an apples-to-apples question of "what does the fire monitoring layer alone cost": $60 a year plus roughly $40 to $75 per detector.

Two offsets worth checking. Insurance: Progressive's official guidance lists monitored smoke detectors among devices that may lower your homeowners rate, and Ring documents that it issues monitoring certificates for insurance companies. Fines: false fire alarms can draw municipal fees in some cities (San Antonio charges $125 per false fire activation from the second through fourth in a year), so mount detectors away from kitchens and steam and keep them maintained.

For where this line item sits in a full monthly budget, see home security cost per month.

Verdict

By the data and published pricing, monitored smoke and CO detection is a cheap layer with an asymmetric payoff. The scenarios it covers (empty house, sleeping household, CO impairment) are exactly the ones where the NFPA death statistics concentrate, and the cost is a rounding error next to the fire damage it is designed to interrupt: an average of $8.9 billion a year in direct property damage from home fires in 2019 to 2023.

Who should skip it: households unwilling to maintain the detectors themselves (monitoring does not help a detector with a dead battery, which is how most alarm failures happen), and renters in buildings where the landlord's fire system already provides supervised coverage. Everyone else deciding between a $40 unmonitored detector and the same detector plus roughly $5 a month of monitoring is buying dispatch-when-you-cannot-call for about the price of a coffee.

If you are already shopping for professional monitoring, ask each provider whether smoke and CO signals are included in the base plan or priced as an add-on; the answer varies. Our short questionnaire at /quote fetches quotes from professional monitoring providers so you can compare that detail side by side.