{"product_id":"weil-mclain-ultra-series-4-299000-btu-condensing-gas-boiler","title":"Weil-McLain Ultra Series 4 299,000 BTU Condensing Gas Boiler","description":"\u003ch2\u003eWeil-McLain Ultra Series 4 299,000 BTU Condensing Gas Boiler\u003c\/h2\u003e\n\u003cp\u003eWeil-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.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eCast aluminum coated heat exchanger\u003c\/li\u003e\n\u003cli\u003eDesigned to operate in low temperature condensing applications\u003c\/li\u003e\n\u003cli\u003eOutdoor reset and domestic hot water priority\u003c\/li\u003e\n\u003cli\u003eModulates with 5:1 turn-down ratio\u003c\/li\u003e\n\u003cli\u003eHigh grade stainless steel burner features quiet operation\u003c\/li\u003e\n\u003cli\u003eU-Control gives the power for easy set-up and maintenance\u003c\/li\u003e\n\u003cli\u003eMultiple set-up and zone options\u003c\/li\u003e\n\u003cli\u003eSystem sensing recognizes system and outdoor temperatures\u003c\/li\u003e\n\u003cli\u003eTemperature management for up to three different set-points\u003c\/li\u003e\n\u003cli\u003eControl multiple boilers from a single control panel\u003c\/li\u003e\n\u003cli\u003eStandard screen messages provide service alerts and maintenance reminders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-start=\"0\" data-end=\"30\"\u003eWhat Our Experts Think\u003c\/h5\u003e\n\u003cul data-start=\"31\" data-end=\"820\"\u003e\n\u003cli data-start=\"31\" data-end=\"267\"\u003e\n\u003cp data-start=\"33\" data-end=\"267\"\u003e\u003cstrong data-start=\"33\" data-end=\"62\"\u003eTop-tier high efficiency:\u003c\/strong\u003e The \u003cstrong data-start=\"67\" data-end=\"131\"\u003eWeil-McLain Ultra Series 4 299,000 BTU Condensing Gas Boiler\u003c\/strong\u003e delivers \u003cstrong data-start=\"141\" data-end=\"184\"\u003eindustry-leading condensing performance\u003c\/strong\u003e (typically up to ~95% AFUE), maximizing heat output while minimizing fuel costs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"268\" data-end=\"454\"\u003e\n\u003cp data-start=\"270\" data-end=\"454\"\u003e\u003cstrong data-start=\"270\" data-end=\"293\"\u003eHigh-capacity heat:\u003c\/strong\u003e With \u003cstrong data-start=\"299\" data-end=\"323\"\u003e299,000 BTU\/h output\u003c\/strong\u003e, this boiler is ideal for \u003cstrong data-start=\"350\" data-end=\"420\"\u003elarge homes, multi-unit buildings, and light commercial facilities\u003c\/strong\u003e with substantial heating loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"455\" data-end=\"616\"\u003e\n\u003cp data-start=\"457\" data-end=\"616\"\u003e\u003cstrong data-start=\"457\" data-end=\"492\"\u003eQuiet and dependable operation:\u003c\/strong\u003e Advanced burner and heat-recovery design provide smooth, reliable heat with reduced operational noise and thermal stress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"617\" data-end=\"820\"\u003e\n\u003cp data-start=\"619\" data-end=\"820\"\u003e\u003cstrong data-start=\"619\" data-end=\"656\"\u003eDurable, service-oriented design:\u003c\/strong\u003e Weil-McLain’s robust engineering emphasizes corrosion resistance, long-lasting components, and accessible service points — reducing downtime and maintenance costs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-start=\"822\" data-end=\"841\"\u003eProduct Q\u0026amp;A\u003c\/h5\u003e\n\u003cul data-start=\"842\" data-end=\"1700\"\u003e\n\u003cli data-start=\"842\" data-end=\"1017\"\u003e\n\u003cp data-start=\"844\" data-end=\"1017\"\u003e\u003cstrong data-start=\"844\" data-end=\"876\"\u003eWhat type of boiler is this?\u003c\/strong\u003e\u003cbr data-start=\"876\" data-end=\"879\"\u003eA \u003cstrong data-start=\"883\" data-end=\"924\"\u003ehigh-efficiency condensing gas boiler\u003c\/strong\u003e that uses a second heat exchanger to extract extra heat from exhaust gases before venting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1018\" data-end=\"1218\"\u003e\n\u003cp data-start=\"1020\" data-end=\"1218\"\u003e\u003cstrong data-start=\"1020\" data-end=\"1048\"\u003eWhere is this best used?\u003c\/strong\u003e\u003cbr data-start=\"1048\" data-end=\"1051\"\u003eExcellent for \u003cstrong data-start=\"1067\" data-end=\"1167\"\u003elarge residential properties, multifamily housing, schools, churches, and light commercial sites\u003c\/strong\u003e requiring significant hydronic heating capacity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1219\" data-end=\"1376\"\u003e\n\u003cp data-start=\"1221\" data-end=\"1376\"\u003e\u003cstrong data-start=\"1221\" data-end=\"1262\"\u003eWhat heating systems does it support?\u003c\/strong\u003e\u003cbr data-start=\"1262\" data-end=\"1265\"\u003eWorks with \u003cstrong data-start=\"1278\" data-end=\"1373\"\u003ehydronic baseboard, radiant floor, fan coils, and other hot-water heat distribution systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1377\" data-end=\"1513\"\u003e\n\u003cp data-start=\"1379\" data-end=\"1513\"\u003e\u003cstrong data-start=\"1379\" data-end=\"1405\"\u003eWhat fuel does it use?\u003c\/strong\u003e\u003cbr data-start=\"1405\" data-end=\"1408\"\u003eNatural gas (propane conversion kits may be available through a qualified HVAC technician if needed).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1514\" data-end=\"1700\"\u003e\n\u003cp data-start=\"1516\" data-end=\"1700\"\u003e\u003cstrong data-start=\"1516\" data-end=\"1552\"\u003eDoes it require special venting?\u003c\/strong\u003e\u003cbr data-start=\"1552\" data-end=\"1555\"\u003eYes — condensing boilers typically use \u003cstrong data-start=\"1596\" data-end=\"1633\"\u003ePVC\/CPVC or polypropylene venting\u003c\/strong\u003e due to lower exhaust temperatures and to manage condensate safely.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-start=\"1702\" data-end=\"1726\"\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul data-start=\"1727\" data-end=\"2546\"\u003e\n\u003cli data-start=\"1727\" data-end=\"1912\"\u003e\n\u003cp data-start=\"1729\" data-end=\"1912\"\u003e\u003cstrong data-start=\"1729\" data-end=\"1761\"\u003eAnnual professional service:\u003c\/strong\u003e Have a licensed HVAC technician inspect and tune components before the heating season — burner, heat exchanger, combustion air system, and controls.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1913\" data-end=\"2030\"\u003e\n\u003cp data-start=\"1915\" data-end=\"2030\"\u003e\u003cstrong data-start=\"1915\" data-end=\"1945\"\u003eCheck condensate drainage:\u003c\/strong\u003e Ensure condensate lines are clear and properly pitched to avoid clogs or freezing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2031\" data-end=\"2164\"\u003e\n\u003cp data-start=\"2033\" data-end=\"2164\"\u003e\u003cstrong data-start=\"2033\" data-end=\"2061\"\u003eMonitor system pressure:\u003c\/strong\u003e Keep boiler pressure within manufacturer-recommended range; adjust with an expansion tank if needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2165\" data-end=\"2298\"\u003e\n\u003cp data-start=\"2167\" data-end=\"2298\"\u003e\u003cstrong data-start=\"2167\" data-end=\"2211\"\u003eClean air intake \u0026amp; exhaust terminations:\u003c\/strong\u003e Keep vents and air intake areas free of debris and obstructions for safe combustion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2299\" data-end=\"2404\"\u003e\n\u003cp data-start=\"2301\" data-end=\"2404\"\u003e\u003cstrong data-start=\"2301\" data-end=\"2323\"\u003eInspect for leaks:\u003c\/strong\u003e Periodically check around valves, joints, and fittings for water or gas leaks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2405\" data-end=\"2546\"\u003e\n\u003cp data-start=\"2407\" data-end=\"2546\"\u003e\u003cstrong data-start=\"2407\" data-end=\"2434\"\u003eMaintain water quality:\u003c\/strong\u003e Use corrosion inhibitors and flush the hydronic system periodically to reduce scale and prolong equipment life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Weil-McLain","offers":[{"title":"Default Title","offer_id":54162689753372,"sku":"W383500737","price":8646.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/0622\/4924\/files\/Weil-McLain-Ultra-Series-4-299000-BTU-Condensing-Gas-Boiler-Main-Image_39.jpg?v=1780152229","url":"https:\/\/www.mybackyardzone.com\/products\/weil-mclain-ultra-series-4-299000-btu-condensing-gas-boiler","provider":"Backup Power Made Simple","version":"1.0","type":"link"}