By David Parks · eXp Realty · The Apollo Group · 2 min read
Smoke and carbon monoxide alarms are low-cost devices that save lives. Inspectors check that they are present, placed correctly, and working.
Smoke alarms warn about fire, and carbon monoxide (CO) alarms detect the odorless gas produced by fuel-burning appliances like furnaces, water heaters, and fireplaces.
Smoke alarms are generally recommended inside each bedroom, outside sleeping areas, and on every level. CO alarms are typically placed near sleeping areas and on each level. Colorado has carbon monoxide alarm requirements for homes, so inspectors look for them.
Alarms older than about ten years should be replaced, since sensors wear out. Check the manufacture date on the back. Test batteries, and consider interconnected alarms so that all sound together.
Replacing alarms is an inexpensive and quick fix. If you buy a home, swap batteries on move-in and note the dates for replacement, so you start with a known baseline.
This article is general information, not legal, tax, financial or inspection advice. Every home and situation is different, so confirm details with a licensed inspector, lender, attorney or tax professional.
David is a Greater Denver real estate advisor with eXp Realty and The Apollo Group (Colorado broker license FA100103211). He has closed more than $55 million in volume, earned eXp Icon status in 2025, and holds a 5.0 rating on Zillow from 27 verified reviews.
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