Last Updated on July 7, 2025 by The Insurance Pros
🛑 Michigan Carbon Monoxide Detector Requirements: What Homeowners Must Know in 2025
Carbon monoxide (CO) is a silent and invisible threat, odorless, colorless, and potentially deadly. Michigan law now mandates carbon monoxide detectors in many homes, especially when fuel-burning appliances or attached garages are present.
📜 Michigan Law: When Are CO Detectors Required?
According to the Michigan Residential Code and Construction Code, CO alarms are required in:
- New homes with fuel-fired appliances or attached garages
- Existing homes undergoing permitted renovations that include those features
Installing alarms near bedrooms and any room adjacent to fuel-burning appliances or garages is mandatory. In new builds, alarms should be hardwired, interconnected, and have battery backup. Existing homes may use battery-operated alarms unless otherwise specified during permit work.
📍 Where to Install Detectors
To maximize safety, the National Fire Protection Association (NFPA) recommends placing detectors:
- In hallways outside bedrooms
- On every floor, including basements
- Near fuel-burning appliances (furnaces, stoves, water heaters)
- Above attached garages (not in them)
💡 Tip: Mount CO alarms 3–5 feet above the floor (not the ceiling) and away from vents or windows.
🚨 Recognizing Carbon Monoxide Symptoms
CO poisoning symptoms mimic the flu and worsen with exposure. Watch for:
- Headaches
- Dizziness
- Nausea or vomiting
- Fatigue or confusion
- Loss of consciousness
⚠️ Important: Pets often show symptoms before humans. If multiple household members or pets are sick, get outside and call 911.
🔧 How to Prevent CO Poisoning
- ✅ Install UL-certified battery- or plug-in-powered CO detectors with backup batteries
- 🔁 Replace batteries twice a year (suggested: daylight savings)
- 🔍 Get annual furnace/appliance inspections
- 🔥 Never run generators, grills, or cars in garages, even with the door open
- 🧯 Pair with smoke alarms and a fire extinguisher for total safety
🛒 Recommended Carbon Monoxide Detectors
Here are two trusted, highly rated detectors:
- Kidde Carbon Monoxide Alarm – Wall- or shelf-mountable, loud alert system, simple battery design
- First Alert CO Detector – Plug-in model with backup battery and strong alert system
🎁 Free Installation in Michigan (MI Prevention Program)
If you are a low-income or vulnerable resident, you may qualify for a free 10-year CO alarm installed by your local fire department through the MI Prevention program.
- 🔹 Prioritize seniors, disabled residents, and mobile homes
- 🔹 Funded through state and federal fire safety grants
✈️ Bonus Tip: Are you traveling or staying in rentals?
Hotels and vacation rentals aren’t always required to provide CO alarms. Bring a portable detector when traveling; it’s a small step that could save a life.
📥 Downloadable Guide
Prefer a quick reference sheet? Please download our PDF containing symptoms, installation tips, and links to top-rated detectors:
📄 Download the 2025 CO Detector Guide (PDF)
💬 FAQ: Carbon Monoxide & Michigan Homes
🧾 Is a CO detector required in every Michigan home?
Yes, if your home has fuel-burning appliances or an attached garage and you pull a permit, a CO detector is required near sleeping areas.
🔋 Can I use battery-powered detectors?
Yes. Battery-operated or plug-in detectors are legal in existing homes unless code upgrades require hardwiring (in new construction).
🛠️ What’s the lifespan of a detector?
Most CO alarms last 5–10 years. Replace the unit per manufacturer instructions and test monthly.
🛡️ Final Word
Carbon monoxide detectors aren’t optional; they’re life-saving. A $25 device could save your family. Ensure you have coverage for your home today. Read about what Michigan requires for smoke detectors here.
