Cast Iron Heat Exchanger
The ES2 blends unmatched performance with long lasting durability and exclusive energy saving features. Designed as an optimal replacement boiler for millions of homes with existing chimneys, the ES2 achieves an 85% AFUE. At the heart of the ES2 is one of the most advanced cast iron heat exchangers in the industry, and a well-insulated heavy-duty steel base for longevity. Even the ES2’s control system is class leading. The IQ Boiler Control System allows the ES2 to be easily equipped with an optional energy saving control package that can achieve up to a 15-20% reduction in fuel consumption according to most studies.
- Natural or LP gas
- Limited Lifetime Manufacturer’s Warranty
- Exclusive IQ Control System platform
- Optional LCD touch screen for system monitoring
- Time proven cast iron design for durability and reliability
- Designed for homes with existing chimneys
- Optional 5 or 10-year parts & limited labor warranty
- Extended Boiler Warranty Plans are administered by CornerStone United, Inc.