{"product_id":"weil-mclain-381-359-304-cga-25-cast-iron-gas-water-boiler-27000-btu-output-spark-ignition-with-taco-007e-circulator-series-4-natural-gas","title":"Weil-mclain 381-359-304 CGA-25 Cast Iron Gas Water Boiler 27000 Btu Output Spark Ignition with Taco 007e Circulator Series 4 Natural Gas","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Weil-McLain 381-359-304 is a CGA-25 Series 4 cast iron, gas-fired hydronic water boiler designed for residential and light commercial heating applications. This unit delivers 27,000 BTU of verified output power from a 38,000 BTU input, giving it an efficiency rating of 84 percent. It runs on natural gas and uses spark ignition for reliable, consistent startup without a standing pilot light. The boiler comes paired with a Taco 007e circulator pump, providing a ready-to-install hydronic heating solution for licensed HVAC professionals and plumbing contractors. Cast iron construction is a proven choice for long-service heating equipment. It resists corrosion, handles repeated thermal cycling, and holds heat well. The CGa Series 4 line has been a trusted name in forced hot water boiler systems for decades, commonly found in older and new residential buildings alike. This model carries an IBR rating of 28,000 BTU and a DOE heating capacity rating of 32,000 BTU. It connects to natural gas supply lines via a 1\/2 inch gas connection and ties into the hydronic loop through 3\/4 inch water connections. The vent configuration uses Type B venting, which means it requires a lined chimney or B-vent pipe for proper flue gas exhaust. Vent size is 4 inches. The boiler measures 45 and 3\/8 inches in height, 10 inches in width, and 4 inches in depth, making it a compact footprint for mechanical room installations. Maximum rated operating altitude is 4,500 feet above sea level. The heat exchanger carries a 20-year warranty, and parts are covered for 2 years. This boiler is intended for installation, commissioning, and service by a licensed and qualified heating professional only. All warranty and technical support inquiries must be handled by the licensed contractor responsible for the installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast iron heat exchanger rated for long service life with a 20-year warranty\u003c\/li\u003e\n\u003cli\u003eSpark ignition system eliminates the need for a standing pilot light, improving efficiency and safety\u003c\/li\u003e\n\u003cli\u003eIncludes Taco 007e circulator pump for a complete hydronic heating package ready for professional installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\u003cp\u003eThe Weil-McLain 381-359-304 CGA-25 Series 4 delivers reliable 27,000 BTU hydronic heating with cast iron durability, 84 percent efficiency, and an integrated Taco 007e circulator. It is a proven solution for residential and light commercial hot water heating systems.\u003c\/p\u003e\u003ch3\u003eProduct Information\u003c\/h3\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: WEIL-MCLAIN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 381-359-304\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type\u003c\/strong\u003e: Boiler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type\u003c\/strong\u003e: Hydronic (Water)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type\u003c\/strong\u003e: Natural Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type\u003c\/strong\u003e: Spark Ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Input\u003c\/strong\u003e: 38,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Output\u003c\/strong\u003e: 27,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIBR Rating\u003c\/strong\u003e: 28,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDOE Rating\u003c\/strong\u003e: 32,000 BTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency\u003c\/strong\u003e: 84%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Type\u003c\/strong\u003e: Type B Vent (Chimney)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Connection\u003c\/strong\u003e: 1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Connection\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 45 and 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 10 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Altitude\u003c\/strong\u003e: 4,500 feet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures\u003c\/strong\u003e: 007e Circulator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: 20 Year (Heat Exchanger) \/ 2 Year (Parts)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WEIL-MCLAIN","offers":[{"title":"Default Title","offer_id":51120795550002,"sku":"381-359-304","price":3088.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/304884988.jpg?v=1777739932","url":"https:\/\/voomisupply.com\/products\/weil-mclain-381-359-304-cga-25-cast-iron-gas-water-boiler-27000-btu-output-spark-ignition-with-taco-007e-circulator-series-4-natural-gas","provider":"Voomi Supply","version":"1.0","type":"link"}