{"product_id":"weil-mclain-386701030-oil-fired-water-boiler","title":"Weil‑McLain 203K BTU Gold S4 Oil-Fired Water Boiler","description":"\u003cp\u003eA high‑capacity five‑section cast‑iron Oil-Fired Water Boiler engineered for strong hydronic output, long service life, and reliable domestic‑hot‑water production. Built on the proven Weil‑McLain Gold platform, the 386701030 arrives as a factory‑packaged unit with burner installed, ensuring proper alignment, consistent ignition, and reduced installation time. This Oil-Fired Water Boiler includes an integrated tankless coil, providing on‑demand domestic hot water without the need for an indirect tank. Designed for natural‑draft chimney venting, it is a straightforward replacement for older atmospheric oil boilers in larger homes.\u003c\/p\u003e\n\n\u003cp\u003eKey Features\u003cbr\u003eFive‑section cast‑iron heat exchanger delivering high output, thermal stability, and long‑term durability.\u003c\/p\u003e\n\n\u003cp\u003e203,000 BTU heating capacity suited for larger homes or higher‑demand hydronic systems.\u003c\/p\u003e\n\n\u003cp\u003eIntegrated tankless coil providing continuous domestic hot water directly from the boiler.\u003c\/p\u003e\n\n\u003cp\u003eFactory‑installed oil burner matched to the boiler’s firing rate for clean, stable combustion.\u003c\/p\u003e\n\n\u003cp\u003e86% AFUE efficiency offering dependable performance with simple annual maintenance.\u003c\/p\u003e\n\n\u003cp\u003eNatural‑draft chimney venting ideal for retrofit installations using existing flue systems.\u003c\/p\u003e\n\n\u003cp\u003eQuiet, low‑vibration operation supported by Weil‑McLain’s combustion chamber and block design.\u003c\/p\u003e\n\n\u003cp\u003eService‑friendly layout with accessible burner, controls, and piping connections.\u003c\/p\u003e\n\n\u003cp\u003eIdeal Applications\u003cbr\u003eLarger homes needing a high‑capacity oil boiler that provides both hydronic heat and on‑demand domestic hot water through a built‑in tankless coil, especially where chimney venting is already in place.\u003c\/p\u003e\n\n\u003cp\u003eWe service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to):\u003c\/p\u003e\n\n\u003cp\u003eNassau County:\u0026amp;nbsp;Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale\u003c\/p\u003e\n\n\u003cp\u003eSuffolk County:\u0026amp;nbsp;Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley\u003c\/p\u003e\n\n\u003cp\u003eContact us today at (631) 779-3196\u003c\/p\u003e","brand":"Installed HVAC Pros","offers":[{"title":"Default Title","offer_id":48665119326459,"sku":"W\/MPWTGO5","price":9924.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9406\/6171\/files\/28213.jpg?v=1776257895","url":"https:\/\/installedhvacpros.com\/products\/weil-mclain-386701030-oil-fired-water-boiler","provider":"Installed HVAC Pros","version":"1.0","type":"link"}