{"product_id":"weil-mclain-672619208940-ultra-series-4-hot-water-gas-boiler-80-mbh-93-5-afue-floor-mount","title":"Weil-mclain 672619208940 Ultra Series 4 Hot Water Gas Boiler 80 Mbh 93.5% Afue Floor Mount","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Weil-McLain 672619208940 Ultra Series 4 is a modulating condensing hot water gas boiler built for residential heating applications. It delivers 80 MBH input and 71,000 BTU per hour heat output at a 93.5% AFUE rating, making it one of the more efficient floor-mount gas boilers available for home heating systems. HVAC technicians and heating contractors rely on this boiler for high-efficiency hydronic heating installs where long-term fuel savings and precise temperature control matter most. The unit features a cast aluminum nano-coated heat exchanger that resists corrosion and improves heat transfer efficiency over time. A high-grade stainless steel burner handles combustion quietly, reducing noise in residential settings. The built-in U-Control system simplifies setup, diagnostics, and ongoing maintenance for service technicians. It supports temperature management across up to three different set points and allows control of multiple boilers from a single panel, making it well suited for zoned hydronic systems. The boiler includes a 5 to 1 turn-down ratio for precise modulation, outdoor reset capability, and domestic hot water priority. Venting is flexible, supporting PVC, CPVC, and polypropylene vent pipe for direct vent installation. The unit arrives with boiler circulators included, reducing installation time on the job. It is ASME certified, CSA certified, and Energy Star compliant. It is also listed for sale in California as a CEC compliant product. Operating on natural gas with a spark ignition system at 120 volts single phase, this boiler fits standard residential electrical and gas service. The supply and return pipe connections are both 1 inch. The unit dimensions are approximately 43 inches tall, 22-13\/16 inches wide, and 19-15\/16 inches deep. The slate gray jacket gives it a clean, modern appearance in mechanical rooms.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast aluminum nano-coated heat exchanger for improved efficiency and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eU-Control system allows easy setup, diagnostics, and multi-boiler management from one panel\u003c\/li\u003e\n\u003cli\u003eFlexible venting with PVC, CPVC, or polypropylene pipe for direct vent installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\u003cp\u003eThe Weil-McLain Ultra Series 4 gas boiler combines 93.5% AFUE efficiency with modulating combustion and advanced controls, making it a practical choice for residential hydronic heating upgrades and new installations.\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: 672619208940\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollection\u003c\/strong\u003e: Ultra Series 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Residential\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type\u003c\/strong\u003e: Natural Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFUE\u003c\/strong\u003e: 93.5%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput (MBH)\u003c\/strong\u003e: 80 MBH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBTU Heat Rating\u003c\/strong\u003e: 71,000 BTU per hour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondensing\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition System\u003c\/strong\u003e: Spark Ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type\u003c\/strong\u003e: Floor Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Type\u003c\/strong\u003e: Direct Vent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cast Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolts\u003c\/strong\u003e: 120V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase\u003c\/strong\u003e: Single Phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Pipe Connection Size\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn Pipe Connection\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZones\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 43-1\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 22-13\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth\u003c\/strong\u003e: 19-15\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASME Certified\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCSA Certified\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Star Compliant\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCEC Compliant\u003c\/strong\u003e: For Sale in CA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WEIL-MCLAIN","offers":[{"title":"Default Title","offer_id":51121091838258,"sku":"672619208940","price":4825.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/304883497.jpg?v=1777748112","url":"https:\/\/voomisupply.com\/products\/weil-mclain-672619208940-ultra-series-4-hot-water-gas-boiler-80-mbh-93-5-afue-floor-mount","provider":"Voomi Supply","version":"1.0","type":"link"}