Weil McLain Ultra Gas Boiler
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