No. of Recommendations: 5
We bought our house new 10 years ago, so that's at least how old the smoke alarms are. Should we replace them all?

Yes. Even if they still work. The ability of smoke detectors to work as they should declines with age, and for most types by year 10 they are just as likely to give no response to smoke as they would a false positive response to nothing.

I recently did this and replaced them with a smoke detector that detects in two ways, for flame and for smoldering. The best way to figure out what model to buy would be to see what kind of connector you have. Even the same brand from 10 years ago, (you won't find or want the same model as improvements have been made,) may not currently have the same type connector. I had to rewire mine because I could not find a compatible linkage at my local hardware stores. It's not something you need an electrician to do though. Just pay attention to what it looks like before you disassemble them, and of course, throw off the circuit breakers!

Don't get the ones that also have CO detectors in it. CO is best detected near the floor while the smoke detectors are up high.

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