Models: UG-80, UG-105, UG-155, UG-230, UG-310

Weil McLain’s Highest Efficiency Boiler

The best combination of gas heating and energy efficiency.

  • Up to 93% AFUE

  • Gas Fired

  • Mixing body mixes air and gas providing higher efficiency

  • Designed to operate in low temperature condensing applications

  • Electronic control module automatically adjusts blower speed and gas flow rate in response to environment

  • Variable speed motor matches combustion output to heating needs

  • Stainless steel burner, features quiet operation, high efficiency and cleaner combustion

  • Limited 15 year heat exchanger warranty