{"product_id":"weil-mclain-381-359-309-cga-7-cast-iron-gas-water-boiler-147000-btu-output-spark-ignition-with-taco-007-circulator-series-4-natural-gas","title":"Weil-mclain 381-359-309 CGA-7 Cast Iron Gas Water Boiler 147000 Btu Output Spark Ignition with Taco 007 Circulator Series 4 Natural Gas","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Weil-McLain 381-359-309 is the CGA-7 Series 4 cast iron gas-fired hydronic water boiler rated at 147,000 BTU output, designed for residential and light commercial heating applications. This boiler is part of the well-established CGa Series 4 lineup from Weil-McLain, a brand long trusted by HVAC professionals for durable, high-performance heating equipment. The CGA-7 model uses spark ignition for reliable startup and runs on natural gas, making it a practical choice for installations where dependable heating performance is a priority. It delivers 147,000 BTU of output from a 200,000 BTU input, achieving an 84 percent efficiency rating that meets the demands of modern hydronic heating systems. The IBR rating of 148,000 BTU and a DOE rating of 170,000 BTU further confirm the heating capacity of this unit for properly sized hydronic systems. The cast iron heat exchanger carries a 20-year warranty, while parts are covered for 2 years, reflecting the long service life expected from cast iron boiler construction. This unit supports both power vent and Type B chimney vent configurations, giving installers flexibility depending on the structure and existing flue setup. The boiler ships as a complete package including a Taco 007 circulator, reducing the need for additional components at the time of installation. Water connections measure 1-1\/4 inches and the gas connection is 3\/4 inches, fitting standard residential and light commercial piping configurations. The unit stands 62-1\/8 inches tall, measures 22 inches wide, and has a 7-inch depth, with a 7-inch vent size. This boiler is intended for installation, commissioning, and service by a licensed HVAC professional in accordance with manufacturer instructions, local codes, and applicable industry standards. It is not intended for homeowner installation or service.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast iron heat exchanger with a 20-year warranty for long service life in hydronic heating systems\u003c\/li\u003e\n\u003cli\u003eIncludes Taco 007 circulator for a more complete installation package out of the box\u003c\/li\u003e\n\u003cli\u003eSupports both power vent and Type B chimney vent configurations for flexible installation options\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\u003cp\u003eThe Weil-McLain 381-359-309 CGA-7 Series 4 delivers 147,000 BTU output with 84 percent efficiency and spark ignition, backed by a cast iron heat exchanger built for long-term reliability in residential and light commercial hydronic 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: 381-359-309\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 Output\u003c\/strong\u003e: 147,000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Input\u003c\/strong\u003e: 200,000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIBR Rating\u003c\/strong\u003e: 148,000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDOE Rating\u003c\/strong\u003e: 170,000\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: Power Vent \/ Type B Vent (Chimney)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Size\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 62-1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 22 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Connection\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Connection\u003c\/strong\u003e: 3\/4 inches\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":51121018962226,"sku":"381-359-309","price":5426.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/304883412.jpg?v=1777746066","url":"https:\/\/voomisupply.com\/products\/weil-mclain-381-359-309-cga-7-cast-iron-gas-water-boiler-147000-btu-output-spark-ignition-with-taco-007-circulator-series-4-natural-gas","provider":"Voomi Supply","version":"1.0","type":"link"}