Company: Weil-McLain^®

Product: High-Efficiency Gas Boiler Line

Description: This expanded product line includes Evergreen®, Ultra™ Series 4, and GV90+^® cast-iron boilers. All operate with natural or propane gas and feature the latest hydronic heating technology. The Evergreen stainless steel condensing boiler features an AFUE rating of 95 percent, simple controls, and 10 heating system presets. Designed for residential and light commercial applications, the line can cascade two to eight boilers together, ZoneStacking® up to 24 programmable zones with no external panel required. The Ultra Series 4 boilers feature a heat exchanger with nanotechnology coating that works like Ultra Armor, protecting the unit from buildup in the heat exchanger, ensuring the unit requires no cleaning for a full five years after installation. Available in six sizes, this product is a good fit for single-family and light commercial applications. The GV90+ features streamlined controls with a simple setup and offers an AFUE rating of 91 percent. It is designed with a high-performance, durable cast-iron primary heat exchanger. A corrosion resistant stainless steel condensing secondary heat exchanger recoups heat energy from exhaust normally wasted to further increase system efficiency.