First Lutheran Church of Norfolk is undergoing a full replacement of its HVAC system. Originally heated by steam radiators in the 1920s, then remodeled and air-conditioning added in 1990s, the church’s heating & cooling infrastructure was in need of a complete upgrade. The new system provides over 120 tons of cooling capacity with energy efficient Carrier equipment utilizing heat-pumps with hot water heating coils for a hybrid system that optimizes the lowest cost energy source based on the climate changes. Seventeen (17) individual systems combined with a central heating plant are all managed by a Honeywell-Tridium control system viewed through smart-phones and tablets. The massive sanctuary has a scalable system to accommodate anything between 20 people to 600 people and ensures the indoor air quality is always within optimal conditions by controlling the CO2 and humidity levels. This project will be completed in the fall of 2018 with its premium assets expected to last for over 25-years and yield 40% in utility savings.