Smoke / CO Detector Replacement Cost in Thornton, CO
What homeowners in Thornton typically pay to replace a smoke / co detector in 2026.
Typical range
$25–$80
Most homeowners pay around $50 installed.
EstimatedUpdated 6/17/2026
How we calculated this
Local life-safety codes require interconnected, hardwired systems that mandate professional-grade components.
Nearby cities
Other safety replacement costs in Thornton
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