First Alert products typically cost $15-$150 per device, with a common household purchase averaging about $45-$75 before tax. The price depends on device type, hardwired or battery power, smart features, and whether an electrician is needed for installation.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Battery smoke alarm | $15 | $25 | $45 | Basic or voice-alert models |
| Carbon monoxide alarm | $20 | $35 | $60 | Plug-in or battery models |
| Combination smoke and CO alarm | $30 | $55 | $100 | Single-sensor or voice-alert versions |
| Smart alarm | $80 | $120 | $180 | Connected features can raise the price |
| Home fire extinguisher | $20 | $35 | $70 | Price varies by size and rating |
What First Alert devices cost for a typical home
For a home replacing three smoke alarms and adding one carbon monoxide alarm, the devices usually total $65-$180. A mixed set with two combination alarms and a kitchen extinguisher commonly runs $80-$220. A smart setup with several connected alarms can exceed $300 before installation.
Most buyers spend about $45-$75 per standard alarm or detector. These estimates assume retail purchase of current consumer models, standard household sizes, and no installation charge. Retailer promotions and multipacks can shift the total.
Assumptions: U.S. retail pricing, standard residential products, before sales tax and installation.
How alarm, battery, and electrician charges add up
The device price is only part of the budget when an alarm must be wired, relocated, or connected to an existing system. Battery-powered replacements are generally simple swaps; hardwired work can require an electrician and may have a minimum service charge.
| Quote item | Typical price | What changes it | Common unit |
|---|---|---|---|
| Battery smoke alarm | $15-$45 | Voice alerts, sealed battery | Per device |
| Combination smoke and CO alarm | $30-$100 | Display, interconnection | Per device |
| Replacement batteries | $3-$15 | Battery type and pack size | Per pack |
| Electrician labor | $80-$150 per hour | Wiring access and minimum visit | Hourly |
| Installation visit | $100-$300 | Number of units and wiring work | Per visit |
For a straightforward wired replacement, labor often matters more than the alarm’s purchase price. An electrician may charge for a service-call minimum even if the work takes less than an hour.
Which First Alert features change the price most
Power type is a major divider: a battery model usually costs less than a hardwired alarm with an interconnect feature. Combination smoke-and-CO units cost more than single-purpose devices, while smart models add connectivity and app notifications. A display or voice location alert can also add roughly $10-$40 compared with a basic unit.
Coverage and quantity matter too. A 3-pack may reduce the per-alarm price by about 10%-25% compared with buying three units separately, although the pack may not include the exact mix of smoke and CO devices needed. Check the device type and power connection before comparing sticker prices.
Extinguisher size and rating affect price: compact home models often cost $20-$35, while larger or multipurpose units can reach $40-$70. For alarms, compatibility with existing hardwired connectors can avoid wiring changes, but model specifications should be checked rather than assumed.
When hardwired installation pushes the total above retail price
Replacing a battery alarm with another battery alarm may involve no labor expense. A hardwired replacement at an existing compatible location may take about 15-30 minutes per unit, but an electrician visit commonly brings the total to $100-$300 for a small job. New wiring, difficult ceiling access, or troubleshooting interconnected units can increase the bill.
For example, four battery alarms at $20-$40 each cost about $80-$160 in devices. Four hardwired units at $30-$70 each plus a $100-$300 service visit put the estimated total near $220-$580. Ask whether the quote includes testing, connector changes, and removal of old alarms.
First Alert prices compared with basic alternatives
First Alert competes with other mainstream home-safety brands, and basic smoke or CO alarms from comparable brands often occupy similar price bands. A generic battery smoke alarm may cost $10-$25, while brand-name voice or combination models commonly cost $30-$100. The lower-priced option is not necessarily a direct substitute if it lacks the required sensor type or power connection.
Smart alarms can cost $80-$180 each, so a single connected device may cost as much as several basic alarms. For a price comparison, match sensor type, power source, interconnection, and alert features—not just the brand name.
Regional labor rates and service-call minimums
Retail device prices are broadly similar across the country, but electrician labor can vary substantially. Installation labor in high-cost metro areas may run 15%-35% above a national midrange estimate; rural areas may have lower hourly rates but longer travel charges or limited appointment availability.
Some contractors charge a $75-$150 service-call minimum before labor, while a multi-device installation may be quoted as a flat $100-$300. Compare the complete installed price, including the visit fee, rather than the hourly rate alone.
How to lower the bill without weakening coverage
Count existing smoke and CO alarms and confirm which ones need replacement before buying a multipack. Match replacement units to existing wiring and interconnection requirements, and avoid paying for smart features that will not be used. For an extinguisher, compare the size and rating needed for the intended location instead of selecting a larger unit by default.
For wired work, request two or three itemized estimates and ask whether the electrician can replace several alarms during one visit. Bundling compatible replacements can spread the service-call minimum across more devices. Do not remove required alarms or substitute a different detector type simply to reduce the purchase price.
Battery replacement, service life, and future expense
Some First Alert alarms use replaceable batteries; others have sealed batteries intended to last for the alarm’s rated service life. Battery packs commonly cost $3-$15, while replacement alarms generally cost $15-$100 depending on type. Check the model label and manual for its replacement date because service life differs by device.
Smoke alarms and CO alarms should be replaced according to their product instructions and applicable local requirements; a low battery is not the same as an end-of-life warning. Planning for full-device replacement avoids treating an aging alarm as a battery-only expense. Sales tax, delivery, and any disposal or installation charges can add to the final household budget.