Weil-McLain CGi Series 4
Model Number: CGi-4
Reliable cast iron hot water boiler ideal for multi-zone Long Island colonials.
Technical Specifications
*Prices include equipment, installation, and standard warranty. Actual cost may vary.
Estimated Annual Savings
Compared to an 80% efficient boiler
$67
per year
$1340
over 20 years
Ideal For
Traditional hot water baseboard systems in 2,000-3,500 sq ft homes
Expert Review: Weil-McLain CGi Series 4
The Weil-McLain CGi Series 4 is the modern evolution of cast iron hot water boilers. With 84% AFUE and proven cast iron construction, it delivers reliable heat for Nassau County homes where efficiency isn't the only priority—longevity and parts availability matter too.
Why the CGi Remains Popular on Long Island
The CGi Series 4 uses the same cast iron section design that has made Weil-McLain famous for over a century. These boilers routinely last 30-40 years with basic maintenance. The lifetime heat exchanger warranty reflects Weil-McLain's confidence in their core technology.
Best Applications
The CGi excels in older Long Island homes with existing hot water baseboard or radiant systems. It handles the varying water temperatures and flow rates of complex multi-zone configurations without the electronic complexity of condensing units. Popular in Garden City, Rockville Centre, and Manhasset renovations where homeowners want proven reliability.
Installation Advantages
Unlike condensing boilers, the CGi vents into standard masonry chimneys—no PVC venting or condensate neutralizers required. For homes with functional brick chimneys, this simplifies installation and reduces cost. The cast iron sections are heavy but field-repairable: individual sections can be replaced without scrapping the entire boiler.
Cost Considerations
The CGi costs less upfront than condensing alternatives, but doesn't qualify for PSEG efficiency rebates due to its 84% AFUE. For homeowners prioritizing lowest installed cost with proven reliability, the CGi delivers. Annual operating costs run 10-15% higher than condensing models.
Key Features & Technology
Cast iron durability
Compact pin-type design
Easy maintenance access
Side wall venting option
Proven reliability since 1881
Advantages
- Lifetime heat exchanger warranty on cast iron
- Uses existing masonry chimney - no PVC venting
- Proven 30-40 year lifespan
- Individual sections field-repairable
- Simpler controls with fewer electronics
- Lower upfront cost than condensing models
Considerations
- 84% AFUE doesn't qualify for PSEG rebates
- Higher annual operating costs than condensing
- Heavy cast iron may complicate basement access
- Less efficient than modern alternatives
Warranty & Protection
Parts Warranty
2 years
Heat Exchanger
Lifetime
Our Guarantee
100% Satisfaction
All Weil-McLain boiler installations by Homets Air & Heat include our 1-year workmanship warranty, covering labor and any installation-related issues.
Frequently Asked Questions
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