The answer to 'how to replace smoke detector' is to replace smoke detectors every 10 years or when they fail to respond to the monthly test. Smoke detectors are essential safety devices, so it's important to ensure they are in working order. Here are the steps to replace a smoke detector:
First, turn off the power to the smoke detector at the circuit breaker. Then, remove the old smoke detector by twisting it counterclockwise and pulling it down. Disconnect the wires and install the new smoke detector, making sure to connect the wires correctly. Finally, turn the power back on and test the new smoke detector to ensure it's working properly.