How to Protect My Tenants From Carbon Monoxide?
Last updated October 31, 2026
The short answer
Why Carbon Monoxide Is a Danger
Carbon monoxide is a colorless, odorless gas that can cause headaches, dizziness, and worse. It comes from burning fuel in furnaces, water heaters, stoves, and generators. In a rental property, a faulty appliance or blocked vent can put everyone at risk.
Because you cannot see or smell it, CO can build up without warning. The only way to detect it is with an alarm. Cold winters mean more time indoors with heating systems running, so the risk is higher during colder months.
Install Carbon Monoxide Alarms
Place a CO alarm on each floor of the rental, especially near sleeping areas. Check that each alarm meets current safety standards. Install them outside bedrooms and in common living spaces. Keep them at least five feet from fuel-burning appliances to avoid false alarms.
Test each alarm monthly and replace batteries as needed. Replace the entire unit when the manufacturer says to, usually every five to seven years. Write the installation date on the back so you know when it is time. Make sure tenants know what the alarm sounds like and what to do when it goes off.
- Install alarms on every level, including basements
- Place near bedrooms and sleeping areas
- Test monthly and replace batteries yearly
- Replace unit every five to seven years
- Keep alarms away from vents and windows
Maintain Fuel-Burning Equipment
Have a qualified professional inspect and service furnaces, water heaters, and stoves each year. Check for cracks, rust, or soot that can signal a problem. Keep vents and chimneys clear of blockages like bird nests or debris. In Quincy, coastal storms can cause power outages, so be careful with portable generators.
Never run a generator inside a garage, basement, or near a window. Portable heaters and grills should only be used outdoors. If you notice a strong odor or yellow flame on a gas appliance, turn it off and have it serviced. Regular maintenance prevents most CO issues before they start.
- Service furnaces and water heaters annually
- Inspect vents and chimneys for blockages
- Clean or replace air filters as needed
- Never use generators indoors or near windows
- Watch for yellow flames on gas burners
- Keep appliance areas clear of clutter
Educate Your Tenants
Give tenants a written guide on CO safety when they move in. Explain the symptoms of CO poisoning: headache, nausea, dizziness, and shortness of breath. Tell them to leave immediately if an alarm sounds and call the fire department from outside. Make sure they know who to contact for maintenance issues.
Encourage tenants to report any appliance problems or odd smells right away. Post emergency numbers in a visible spot, like on the fridge. Remind them not to disable alarms, even if they seem annoying. A short conversation can go a long way in keeping everyone safe.
Respond to an Alarm or Suspected Leak
If an alarm goes off, evacuate the building and call 911 from a safe location. Do not try to find the source yourself. Once the fire department clears the building, a professional can inspect and repair the appliance. Keep the area ventilated until the problem is fixed.
After a leak, check for water damage if a pipe burst or a vent blocked caused flooding. Local water damage pros can dry out structures and prevent mold. If you have water damage, address it quickly to avoid long-term issues. Your insurer decides what is covered, so check your policy.
Talk to someone now
Water keeps spreading into floors and walls, so it is worth acting early. Calls are answered 24/7.
Call Now (617) 404-2753Frequently asked questions
How often should I test CO alarms in my rental?
Test each alarm at least once a month. Press the test button and listen for the beep. Replace batteries as needed, and replace the entire unit every five to seven years. Monthly testing takes less than a minute and can save lives.
What should tenants do if the CO alarm sounds?
Tell them to leave the building immediately and call 911 from outside. Do not open windows to air out the house first, because that can delay evacuation. Do not go back inside until the fire department says it is safe.
Can a CO leak cause water damage?
Sometimes. A blocked vent or faulty appliance can lead to condensation and moisture buildup, which may cause water damage. Winter storms can also cause ice dams that lead to leaks. If you have water damage, local water damage pros can help dry and restore affected areas.