Switching relays provide a convenient way to link circulator pumps to thermostats and boilers. Outdoor reset controls allow hydronic boilers to change output temperatures based on outdoor temperatures. Lower temperature settings can lead to fuel savings, especially on unseasonably warm days. Taco’s new FuelMizer combines these features, offering a switching relay and outdoor reset control in a single device. Perfect for retrofit applications, the FuelMizer is ideal in single-zone systems. It leads to 14% energy savings on average, with savings up to 30%. Additional features include outdoor reset override during domestic water calls and diagnostic LED light indicators.