Description

Weil-McLain CGa-6 Series 3 166,000 BTU Cast Iron Natural Gas Boiler

Weil-McLain is a leading North American Brand of hydronic comfort heating systems for residential, commercial and institutional buildings, since 1881. Contractors, engineers, architects, homeowners, and facility managers alike rely on Weil-McLain boilers for their comfort heating needs. Installed in homes, offices, schools, restaurants, hotels, and other facilities throughout North America, the Weil-McLain brand is among the most trusted and often used in the building industry.

Features

Natural draft, silent operation
Integrated Boiler Control Module with intermittent electronic ignition system and indicator/diagnostic lights
Compact design saves valuable living space
Built-in low water cut off functionality
Stainless steel burners for quieter ignition, longer life, and improved combustion
Gas fired water boiler with cast iron sections
Easily accessible controls, vertical flueways, and top cleaning for easy and quick servicing

What Our Experts Think

Dependable hydronic performance: The Weil‑McLain CGa‑6 Series 3 166,000 BTU Cast Iron Natural Gas Boiler delivers consistent, even heat for larger homes, multifamily units, and light commercial spaces, providing comfort and reliability you can count on.

Rugged cast‑iron construction: Heavy‑duty cast iron offers excellent thermal mass and corrosion resistance, helping the boiler maintain stable temperatures and long service life.

Straightforward design: Proven conventional boiler architecture makes service, maintenance, and troubleshooting easier for HVAC professionals.

Trusted brand history: Weil‑McLain’s CGa range has a strong reputation for durable, long‑lasting operation in traditional hydronic heating systems.

Product Q&A

What type of boiler is this?
A cast‑iron, natural gas‑fired hydronic boiler that heats water for baseboards, radiators, or radiant floor loops.

What is the heating capacity?
166,000 BTU/hour — suitable for medium‑large heating loads in residential, multifamily, or light commercial applications.

Does it require special venting?
Yes — like all conventional gas boilers, it needs proper chimney or flue venting installed per local codes and manufacturer instructions.

Is this suitable for new construction?
Yes — especially in systems where robust cast‑iron performance is preferred and condensing efficiency is not required.

Maintenance Tips

Annual professional inspection: Have a licensed HVAC technician check the boiler before each heating season — examining the burner, heat exchanger, combustion, and controls.

Monitor pressure and water level: Keep system pressure within manufacturer‑recommended ranges and verify expansion tank condition.

Bleed heat circuits: Release trapped air from radiators or baseboards to ensure even heating.

Inspect venting: Ensure chimney or flue paths remain clear and properly sealed to prevent combustion issues.

Check for leaks: Regularly inspect around valves, connections, and pipe joints for water or gas leakage.

Periodic system flushing: Flushing helps remove sediment and scale, improving efficiency and extending component life.

Weil-McLain CGa-6 Series 3 166,000 BTU Cast Iron Natural Gas Boiler-Schneller Versand

Description