Smoke and CO alarms at move-in: age, type and an escape plan
Prepare an alarm inventory, manufacturer instructions, local requirements and an escape plan for the household.

What matters before you decide
Identify smoke and CO alarms, their condition and how everyone will leave in a fire. Follow manufacturer instructions and local requirements. A device seen during a tour is not evidence of correct placement or remaining service life. If fire is suspected, get outside and contact the fire department rather than investigating yourself.
- Record type and manufacture date.
- Follow manufacturer and local guidance.
- Separate appliance checks from detector tests.
Inventory devices without assuming equivalence
Record device type, manufacture date, power source and instructions by room. USFA advises monthly smoke-alarm testing and generally replacement ten years from manufacture; follow the device instructions and local rules. Ask a qualified electrician about hardwired installation or unknown history. Do not disable an alarm to stop nuisance sounds. Record unresolved installation questions for the appropriate professional rather than experimenting with the wiring.
Separate CO detection and appliance assessment
USFA explains that human senses cannot detect carbon monoxide and recommends maintaining CO alarms. A smoke-only device and a CO device have different functions: read the label. Keep servicing and venting questions in a separate inspection file. Testing a detector does not establish that a furnace, fireplace or generator is safe. Retain qualified-service records alongside the alarm inventory.
Make the escape plan usable
Use USFA’s guidance to identify exits and an outside meeting point. Account for mobility, hearing, children and unfamiliar guests. For apartments, obtain building instructions and identify exit stairs. This is a preparation file, not an emergency troubleshooting procedure. During an emergency follow fire-department instructions and do not re-enter a dangerous building to retrieve documents or possessions.
A device with no readable date
An alarm has no readable manufacture date. Record the uncertainty and seek appropriate replacement or assessment rather than treating a visible device as a completed safety check.
Decision checklist
- Record type and manufacture date.
- Follow manufacturer and local guidance.
- Separate appliance checks from detector tests.
- Plan exits and an outside meeting place.
Frequently asked questions
01Does an alarm test prove the furnace is safe?
No. Condition and ventilation need an appropriate separate assessment.
02Can I remove a battery for nuisance alarms?
Do not disable it. Follow manufacturer guidance and seek qualified help.
Primary sources and further reading
Always verify the date, scope and local application before using a source for a specific decision.
Sources consulted on .
Independent educational information. Not legal, tax, lending, or investment advice. Verify local rules and consult licensed professionals before making a real estate decision.


