Outdoor temperature reset controls is an energy-saving heating concept, tested and approved by multiple government agencies as the most effective program to save energy. Users of outdoor reset controls, coupled with certain boilers, qualify for some tax rebates and incentives! If your building is heated by the use of a hot water boiler. In that case, the boiler will maintain a specified water temperature all year round, usually between 160°F and 200°F, the outside weather conditions notwithstanding, then this will result in tenants feeling much warmer while in fall plus spring. However, your space temperature will be less warm while we were in the cold winter weeks due to the faster energy escape while we were in harshly low hot and cold temperatures, then outdoor reset controls respond to weather changes by increasing the temperature of the boiler water circulating throughout your building. It sends cooler water out to your heating and A/C plan while we were in warmer outdoor temperatures and sends warmer water to your building while in cooler outdoor temperatures. The outdoor reset controls then control the amount of energy getting into your building based on your outdoor temperature by adjusting the boiler water temperature. This provides an almost perfect equilibrium where the energy getting into your building is equivalent to the energy getting out, and as a result, you will maintain a steady indoor temperature throughout the year and save significant energy costs, then for every 4°F, your boiler water temperature is lowered, there is a 1% energy savings. The reset ratio is a regulation that allows you to accomplish the equilibrium between your heat input and your heat loss for optimum energy saving.