Weil-McLain CGi-4 Series 4 90,000 BTU Cast Iron Natural Gas Boiler - W381359004
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
- Gas fired water boiler with cast iron sections
- Natural draft and direct exhaust capability
- Can be used with natural or propane gas
- Now with built-in low water cut off functionality
- Compact design saves valuable living space
- No vertical draft hood and no mechanical vent damper
- Intermittent electronic ignition with standard components for easy servicing
What Our Experts Think
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Durable Cast Iron Build: Cast iron heat-retaining sections resist corrosion and stress for long-lasting performance
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90,000 BTU Heating Output: Well-suited for small to medium homes and light hydronic heating systems
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Efficient Natural Gas Operation: Provides steady, cost-effective heat with reliable combustion performance
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Trusted Weil-McLain Engineering: Dependable design from a respected boiler manufacturer
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Hydronic Heating Ready: Ideal for radiant floors, baseboard, or radiator systems needing consistent warmth
Q&A
Q: What fuel does this boiler use?
A: Natural Gas
Q: What is the heating capacity?
A: 90,000 BTU
Q: Where is this model best used?
A: Small to medium residential homes and light hydronic heating applications
Q: Why choose cast iron construction?
A: Excellent durability, heat retention, and long service life
Maintenance Tips
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Annual Professional Inspection: Have a licensed technician check burners, controls, and safety systems yearly
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Monitor Water Levels & Pressure: Regularly verify proper boiler water level and system pressure
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Flush System Periodically: Remove sediment and mineral buildup to maintain efficiency and extend life
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Inspect Vents & Flues: Make sure exhaust and vent pathways are clear and functioning properly
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Check for Leaks: Regularly inspect connections, valves, and the boiler exterior for moisture or wear
Damage 
Loss 
Theft 
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