Sheesh my 10 year old home is doing that I need an upgrade thing. I have 2 smoke alarms that I think need replacing! At random times when the dryer is on and the heating, they start to beep. Have tried replacing the batteries and it makes no difference, tried pressing the reset buttons and it works for a while and they start again, then stop and nothing for weeks, then randomly start again. If anyone has any suggestions as to how to stop this or is able to replace them a quote would be appreciated, please pm me. Thanks in advance :)