Description

Weil-McLain CGa-25 Series 3 38,000 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

Reliable everyday heating: The Weil‑McLain CGa‑25 Series 3 38,000 BTU Cast Iron Natural Gas Boiler delivers consistent, even hydronic heat — ideal for small to mid‑size homes, cottages, or supplemental systems with lower heat demand.

Proven cast‑iron build: Cast‑iron sections offer excellent thermal mass and corrosion resistance, helping the boiler deliver stable warmth and long‑lasting service.

Straightforward and dependable: Classic, no‑nonsense design with accessible components makes service and maintenance easier for technicians.

Trusted heritage: Weil‑McLain’s CGa series has a strong track record for durable, dependable operation across many years of field use.

Product Q&A

What type of boiler is this?
A cast‑iron, natural gas‑fired hydronic boiler designed for space heating via baseboards, radiators, or radiant floor loops.

What is the heat output?
38,000 BTU/hour — well‑suited for smaller homes or lower load heating systems where moderate heat is needed.

Does it require special venting?
Yes — conventional gas boilers need proper chimney or venting in accordance with local codes and manufacturer specs.

Can it be used for new construction?
Yes — especially where a compact, reliable cast‑iron boiler is preferred for heating efficiency and longevity.

Maintenance Tips

Annual professional service: Schedule a licensed HVAC technician to inspect and tune the boiler before each heating season — checking the burner, heat exchanger, and controls.

Monitor system pressure & water level: Keep the pressure within recommended ranges and check the expansion tank’s condition.

Air bleeding: Release trapped air from baseboards or radiators periodically to promote even heat distribution.

Inspect venting & combustion air: Ensure flue and air intakes remain clear of debris and operate safely.

Check for leaks: Regularly inspect around valves, joints, and piping for signs of water or gas leaks.

Flush system as needed: Periodic flushing helps reduce sediment buildup and maintain boiler efficiency.

Weil-McLain CGa-25 Series 3 38,000 BTU Cast Iron Natural Gas Boiler-Schneller Versand

Description