Williamson GWA-100-N-S3 100,000 Btuh Input Natural Gas, Hot Water Boiler

The highly efficient GWA-100-N-S3 pumps out 100,000 BTUs with an AFUE (annual fuel utilization efficiency) rating of 84.0 percent. The GWA is also equipped with flue baffles, stainless steel burners, and an automatic vent damper to maintain that efficiency.

Features:

• Spark (intermittent) pilot system,
• Service is simple with a one-piece access door and easily accessible controls.
• GWA is designed with an inferred heat program that automatically adjusts the boiler water temperature to match heating demands.
• A limited lifetime warranty on the heat exchanger means that you can rest assured that your investment is covered, should there be a problem