The Weil‑McLain CGI4PIN Series 4 ECM Gas‑Fired Water Boiler delivers dependable, energy‑efficient hydronic heating with a rugged four‑section cast‑iron heat exchanger and a proven standing pilot burner ignition system. Designed for long‑term reliability, this 90,000 BTU model provides steady, even heat while maintaining the quiet, low‑maintenance performance homeowners expect from Weil‑McLain. Its 84% AFUE efficiency makes it a strong choice for traditional chimney‑vented installations and replacement projects where durability and simplicity are essential.
Built on the trusted CGI Series 4 platform, the CGI4PIN features an ECM circulator that improves system efficiency by optimizing water flow and reducing electrical consumption. The boiler’s clean, accessible control layout supports fast installation and simplified service, giving technicians clear access to key components. Precision‑machined cast‑iron sections ensure excellent heat transfer, long service life, and consistent performance across a wide range of operating conditions.
The standing pilot burner provides reliable, proven ignition—ideal for homes where straightforward operation and easy servicing are priorities. Integrated safety controls help maintain proper system function under varying load conditions, offering homeowners dependable comfort throughout the heating season.
Perfect for residential applications requiring a chimney‑vented, cast‑iron gas boiler, the CGI4PIN S4 ECM delivers the reliability, efficiency, and serviceability that define the Weil‑McLain name. It’s a practical, long‑lasting solution for upgrading older systems or installing a robust new hydronic heating setup.
We service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to) this coverage area:
Nassau County: Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale
Suffolk County: Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley
Contact us today at (631) 779-3196