You may think of your heating system primarily as a source of physical comfort, but it can protect your home against devastating winter damage. To ensure that your heating system keeps performing in any weather, consider a Wi-Fi-connected thermostat like the Nest. The technology offers you the convenience of being able to control your thermostat from anywhere, via any Internet-enabled device. But more importantly, the smart thermostat provides real-time system alerts, so if your heating system were to fail, you could take action immediately—before frozen pipes and other hazards endanger your home. Available on Amazon; $249.