Wireless heterogeneous network is a main component in sensing data for present IoT architecture. Wireless sensor network is the data source collector for decision making and prognostic activity in IoT. The network has challenges like energy and data reliability for accurate decision making. The energy-efficient routing algorithm (EERA) algorithm is a solution for increasing lifetime as well as gives high data reliability to the network through link stability approach. The CH selection and routing mainly influences data reliability and network lifetime. The EERA algorithm determines the better CH through residual energy, Link stability. The EERA algorithm is compared with ISEP, PSO-C, ACO-Leach and LEACH routing protocols. The EERA-algorithm performs more when compared to ISEP and ACO-Leach protocol by 1.23 times and 1.31 times in terms of lifetime. The unequal clustering mechanism exhibited by this algorithm provides equal load distribution throughout the area of interest. The EERA proposed approach also provides 1.44 times improved throughput on comparing with LEACH routing protocol. The algorithm also eliminates HOTSPOT issue and addresses energy hole issue in the networks. This proposed algorithm is an efficient approach for energy hole and data reliability issue in heterogeneous wireless network.