Carbon Monoxide Detector Installation Cost (2026): Plug-In vs Hardwired (and Why the Labor Isn’t ‘Just Two Screws’)
· Home & HOA
Real-world 2026 CO alarm installation costs: per-alarm ranges, labor vs materials, plug-in vs hardwired vs combo smoke/CO, wired vs wireless interconnect, permit/code notes, typical labor time, and 4 EXAMPLES ONLY quote snapshots.