Current codes require that all rooms used for sleeping purposes be protected by smoke detectors. New construction requires that the detectors be hard wired to the building`s electrical system, with battery back-up. Hallways which lead to sleeping rooms also require detectors. While not required by current codes, we also recommend that you install carbon monoxide detectors in your home if you have a device which burns fossil fuels. Gas heaters, furnaces, oil fired boilers, fireplaces and wood stoves are examples.