Lennox GWB8-E, GWB8-100E-3, 100000 Btu, Up to 83.9 AFUE, Floor Mount, Gas-Fired Water Boiler

### Product Overview

The GWB8-100E-3 boiler delivers impressive efficiency with an AFUE rating of up to 83%, leading to significant energy savings over older, less efficient models. Enjoy lower utility bills throughout the winter season without the need to constantly adjust your thermostat.

**Key Features:**

- **Vent Damper:** Automatically seals when the boiler shuts off, enhancing overall energy efficiency.
- **Cast Iron Heat Exchanger:** Engineered for durability and long-term reliability, suitable for various water flow rates.
- **Thick Fiberglass Insulation:** Reduces heat and energy loss during the cooling phase of the heat exchanger.
- **Electronic Ignition Control:** Optimizes burner operation by monitoring water temperature and activating the burner only when necessary.