{"product_id":"velocity-boiler-works-41100b-cast-iron-residential-oil-fired-hot-water-boiler-123-mbh-1-1-2-inches-fpt-supply-6-inches-vent-50-psi","title":"Velocity Boiler Works 41100b Cast Iron Residential Oil-fired Hot Water Boiler 123 Mbh 1-1\/2 Inches Fpt Supply 6 Inches Vent 50 Psi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Velocity Boiler Works 41100b is a cast iron residential oil-fired hot water boiler built for reliable, efficient home heating. Manufactured by Crown Boiler Co. under the Velocity Boiler Works brand, this unit delivers a DOE Heating Capacity of 123 MBH and an Input Rating of 140 MBH, making it well-suited for medium to larger residential heating loads. The 41100b carries an AFUE Rating of 87 percent, meaning it converts a strong majority of fuel into usable heat, helping homeowners reduce energy consumption over the long term. The cast iron heat exchanger is built to last and is backed by a lifetime warranty, giving HVAC contractors and homeowners confidence in long-term performance. The supply connection is 1-1\/2 inches female threaded and the return connection is 1-1\/2 inches, making integration with standard residential hydronic piping systems straightforward. The boiler holds 11.08 gallons of water and has a pressure rating of 50 PSI for the water circuit. A 30 PSI ASME relief valve is supplied with the unit. Vent size is 6 inches, and chimney requirements are a 7 inch diameter round flue at 15 feet height, or an 8 inch by 8 inch rectangular flue at 15 feet height. The burner is compatible with Beckett, Carlin, and Riello oil burners, giving installers flexibility in burner selection. GPH recovery is rated at 8 GPM at 35 degrees F and 12.3 GPM at 20 degrees F. Overall boiler dimensions are 20-3\/4 inches wide, 22-1\/4 inches deep, and 31-1\/2 inches tall. The unit meets AHRI, ASME, ANSI\/NFPA 31\/70, CAN\/CSA B139, and CSA C22.1 standards. A 120 Volt Low Water Cutoff Kit is available as an option. The Net IBR Rating is 107 MBH and the Net IBR Steam Area Rating is 20.29 square feet. This boiler is a trusted choice for licensed HVAC technicians and heating contractors replacing or installing oil-fired hydronic systems in residential applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast iron construction with a lifetime heat exchanger warranty for long-term durability\u003c\/li\u003e\n\u003cli\u003e87 percent AFUE rating for strong residential heating efficiency in oil-fired systems\u003c\/li\u003e\n\u003cli\u003eCompatible with Beckett, Carlin, and Riello oil burners for flexible installation options\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\u003cp\u003eThe Velocity Boiler Works 41100b delivers 123 MBH DOE heating capacity with a cast iron build and 87 percent AFUE rating, backed by a lifetime heat exchanger warranty. It is a dependable choice for residential oil-fired hot water heating 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: VELOCITY BOILER WORKS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 41100b\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Hot Water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler Material\u003c\/strong\u003e: Cast Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDOE Heating Capacity\u003c\/strong\u003e: 123 MBH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Rating\u003c\/strong\u003e: 140 MBH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet IBR Rating\u003c\/strong\u003e: 107 MBH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet IBR Steam Area Rating\u003c\/strong\u003e: 20.29 Square Foot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAFUE Rating\u003c\/strong\u003e: 87 Percent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 50 PSI (Water)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Connection\u003c\/strong\u003e: 1-1\/2 Inch Female Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn Connection\u003c\/strong\u003e: 1-1\/2 Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Size\u003c\/strong\u003e: 6 Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Content\u003c\/strong\u003e: 11.08 Gallon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurner Type\u003c\/strong\u003e: Beckett\/Carlin\/Riello\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Valve Details\u003c\/strong\u003e: 30 PSI ASME Relief Valve Supplied\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGPH Recovery\u003c\/strong\u003e: 8 GPM at 35 Deg F, 12.3 GPM at 20 Deg F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler Dimensions\u003c\/strong\u003e: 20-3\/4 Inch Width x 22-1\/4 Inch Depth x 31-1\/2 Inch Height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChimney Size\u003c\/strong\u003e: 7 Inch Diameter x 15 Foot Height (Round), 8 Inch x 8 Inch x 15 Foot Height (Rectangle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: Lifetime (Heat Exchanger)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptions\u003c\/strong\u003e: 120 Volt Low Water Cutoff Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplicable Standard\u003c\/strong\u003e: AHRI, ASME, ANSI\/NFPA 31\/70, CAN\/CSA B139, CSA C22.1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VELOCITY BOILER WORKS","offers":[{"title":"Default Title","offer_id":51120918430002,"sku":"41100B","price":1012.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/304882601.jpg?v=1777743300","url":"https:\/\/voomisupply.com\/products\/velocity-boiler-works-41100b-cast-iron-residential-oil-fired-hot-water-boiler-123-mbh-1-1-2-inches-fpt-supply-6-inches-vent-50-psi","provider":"Voomi Supply","version":"1.0","type":"link"}