{"product_id":"weil-mclain-ab-155h-aquabalance-series-2-155000-btu-heat-only-condensing-gas-boiler","title":"Weil-McLain AB-155H AquaBalance Series 2 155,000 BTU Heat-Only Condensing Gas Boiler","description":"\u003ch2\u003eWeil-McLain AB-155H AquaBalance Series 2 155,000 BTU Heat-Only 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\u003eCompact design to increase placement options\u003c\/li\u003e\n\u003cli\u003eHeavy gauge insulated jacket provides quiet operation\u003c\/li\u003e\n\u003cli\u003eContractor-friendly removable sides\u003c\/li\u003e\n\u003cli\u003ePre-wired, plug-in ready electrical design\u003c\/li\u003e\n\u003cli\u003eCommercial grade 120V power 6' cord with 3 prong plug\u003c\/li\u003e\n\u003cli\u003e24 VAC thermostat relay, fuse protected with prewired terminal strip\u003c\/li\u003e\n\u003cli\u003eHoneywell control with digital display\u003c\/li\u003e\n\u003cli\u003eWall mounting bracket and hardware included\u003c\/li\u003e\n\u003cli\u003eUnique \"3-in-1\" vent adapter readily accepts PVC, CPVC, SS, or PP vent materials\u003c\/li\u003e\n\u003cli\u003eMultiple vent options includes direct vent, 2 pipes or concentric, through roof or sidewall\u003c\/li\u003e\n\u003cli\u003eStrategically placed sensors used instead of additional bulky boiler controls\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=\"824\"\u003e\n\u003cli data-start=\"31\" data-end=\"310\"\u003e\n\u003cp data-start=\"33\" data-end=\"310\"\u003e\u003cstrong data-start=\"33\" data-end=\"69\"\u003eHigh‑efficiency condensing heat:\u003c\/strong\u003e The \u003cstrong data-start=\"74\" data-end=\"162\"\u003eWeil‑McLain AB‑155H AquaBalance Series 2 155,000 BTU Heat‑Only Condensing Gas Boiler\u003c\/strong\u003e delivers \u003cstrong data-start=\"172\" data-end=\"197\"\u003econdensing efficiency\u003c\/strong\u003e that lowers fuel use and operating costs compared to traditional boilers while producing steady hydronic heat.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"311\" data-end=\"512\"\u003e\n\u003cp data-start=\"313\" data-end=\"512\"\u003e\u003cstrong data-start=\"313\" data-end=\"333\"\u003eHeat‑only focus:\u003c\/strong\u003e Designed specifically for \u003cstrong data-start=\"360\" data-end=\"377\"\u003espace‑heating\u003c\/strong\u003e, this model is ideal when \u003cstrong data-start=\"404\" data-end=\"482\"\u003edomestic hot water is provided by a separate water heater or indirect tank\u003c\/strong\u003e, simplifying system design.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"513\" data-end=\"655\"\u003e\n\u003cp data-start=\"515\" data-end=\"655\"\u003e\u003cstrong data-start=\"515\" data-end=\"547\"\u003eQuiet, dependable operation:\u003c\/strong\u003e Smooth combustion and robust controls deliver \u003cstrong data-start=\"594\" data-end=\"621\"\u003econsistent temperatures\u003c\/strong\u003e and low noise during operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"656\" data-end=\"824\"\u003e\n\u003cp data-start=\"658\" data-end=\"824\"\u003e\u003cstrong data-start=\"658\" data-end=\"683\"\u003eBuilt for durability:\u003c\/strong\u003e Corrosion‑resistant heat exchangers and service‑friendly components promote long service life and easier maintenance for HVAC professionals.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-start=\"826\" data-end=\"845\"\u003eProduct Q\u0026amp;A\u003c\/h5\u003e\n\u003cul data-start=\"846\" data-end=\"1592\"\u003e\n\u003cli data-start=\"846\" data-end=\"1048\"\u003e\n\u003cp data-start=\"848\" data-end=\"1048\"\u003e\u003cstrong data-start=\"848\" data-end=\"879\"\u003eWhat does “heat‑only” mean?\u003c\/strong\u003e\u003cbr data-start=\"879\" data-end=\"882\"\u003eIt means the boiler is dedicated to \u003cstrong data-start=\"920\" data-end=\"942\"\u003espace‑heating only\u003c\/strong\u003e — it does not provide domestic hot water. A separate water heater or indirect tank is required for DHW.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1049\" data-end=\"1239\"\u003e\n\u003cp data-start=\"1051\" data-end=\"1239\"\u003e\u003cstrong data-start=\"1051\" data-end=\"1077\"\u003eWhat fuel does it use?\u003c\/strong\u003e\u003cbr data-start=\"1077\" data-end=\"1080\"\u003e\u003cstrong data-start=\"1082\" data-end=\"1097\"\u003eNatural gas\u003c\/strong\u003e — a propane (LP) conversion kit is often available and must be installed by a \u003cstrong data-start=\"1176\" data-end=\"1208\"\u003elicensed HVAC\/gas technician\u003c\/strong\u003e if propane fuel is required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1240\" data-end=\"1405\"\u003e\n\u003cp data-start=\"1242\" data-end=\"1405\"\u003e\u003cstrong data-start=\"1242\" data-end=\"1275\"\u003eWhat systems does it support?\u003c\/strong\u003e\u003cbr data-start=\"1275\" data-end=\"1278\"\u003eCompatible with \u003cstrong data-start=\"1296\" data-end=\"1362\"\u003ehydronic baseboards, radiant floor systems, and fan‑coil units\u003c\/strong\u003e tied into a hot‑water distribution loop.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1406\" data-end=\"1592\"\u003e\n\u003cp data-start=\"1408\" data-end=\"1592\"\u003e\u003cstrong data-start=\"1408\" data-end=\"1436\"\u003eIs this high‑efficiency?\u003c\/strong\u003e\u003cbr data-start=\"1436\" data-end=\"1439\"\u003eYes — condensing technology extracts extra heat from combustion gases, raising overall \u003cstrong data-start=\"1528\" data-end=\"1565\"\u003eefficiency and lowering fuel cost\u003c\/strong\u003e over non‑condensing units.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-start=\"1594\" data-end=\"1618\"\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul data-start=\"1619\" data-end=\"2519\"\u003e\n\u003cli data-start=\"1619\" data-end=\"1827\"\u003e\n\u003cp data-start=\"1621\" data-end=\"1827\"\u003e\u003cstrong data-start=\"1621\" data-end=\"1653\"\u003eAnnual professional service:\u003c\/strong\u003e Have a \u003cstrong data-start=\"1661\" data-end=\"1689\"\u003elicensed HVAC technician\u003c\/strong\u003e inspect and tune the boiler annually before the heating season — checking burner, heat exchanger, controls, and combustion performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1828\" data-end=\"1971\"\u003e\n\u003cp data-start=\"1830\" data-end=\"1971\"\u003e\u003cstrong data-start=\"1830\" data-end=\"1857\"\u003eCheck condensate drain:\u003c\/strong\u003e Ensure condensate lines and traps are clear and properly sloped to avoid blockages or freezing in cold weather.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1972\" data-end=\"2112\"\u003e\n\u003cp data-start=\"1974\" data-end=\"2112\"\u003e\u003cstrong data-start=\"1974\" data-end=\"2019\"\u003eMonitor system pressure \u0026amp; expansion tank:\u003c\/strong\u003e Maintain correct boiler pressure and verify the expansion tank’s condition as recommended.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2113\" data-end=\"2235\"\u003e\n\u003cp data-start=\"2115\" data-end=\"2235\"\u003e\u003cstrong data-start=\"2115\" data-end=\"2151\"\u003eClean intake \u0026amp; exhaust openings:\u003c\/strong\u003e Keep air intake and vent terminations free of debris for safe, efficient airflow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2236\" data-end=\"2362\"\u003e\n\u003cp data-start=\"2238\" data-end=\"2362\"\u003e\u003cstrong data-start=\"2238\" data-end=\"2260\"\u003eInspect for leaks:\u003c\/strong\u003e Regularly check valves, pipe fittings, and connection points for signs of \u003cstrong data-start=\"2335\" data-end=\"2359\"\u003ewater or gas leakage\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2363\" data-end=\"2519\"\u003e\n\u003cp data-start=\"2365\" data-end=\"2519\"\u003e\u003cstrong data-start=\"2365\" data-end=\"2392\"\u003eMaintain water quality:\u003c\/strong\u003e Use recommended hydronic corrosion inhibitors and schedule periodic system flushing to reduce scale and extend component life.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Weil-McLain","offers":[{"title":"Default Title","offer_id":54162688966940,"sku":"W383100055","price":3195.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/0622\/4924\/files\/Weil-McLain-AB-155H-AquaBalance-Series-2-155000-BTU-Heat-Only-Condensing-Gas-Boiler-Main-Image_20.jpg?v=1780152200","url":"https:\/\/www.mybackyardzone.com\/products\/weil-mclain-ab-155h-aquabalance-series-2-155000-btu-heat-only-condensing-gas-boiler","provider":"Backup Power Made Simple","version":"1.0","type":"link"}