{"product_id":"weil-mclain-386701029-oil-fired-boiler","title":"Weil-McLain Oil-Fired Boiler (with Burner \u0026 Tankless)","description":"\u003cp\u003eA high‑capacity four‑section cast‑iron Oil-Fired Boiler engineered for reliable hydronic heat and on‑demand domestic hot water. Built on the proven Gold S4 platform, this packaged model includes a factory‑installed oil burner and an integrated tankless coil, providing continuous hot‑water production without the need for an indirect tank. The 386701029 is configured for natural‑draft chimney venting, making this Oil-Fired Boiler, a straightforward replacement for older atmospheric oil boilers.\u003c\/p\u003e\n\n\u003cp\u003eKey Features\u003cbr\u003eFour‑section cast‑iron heat exchanger designed for strong heat output, even heat transfer, and long‑term durability.\u003c\/p\u003e\n\n\u003cp\u003e168,000 BTU heating capacity suitable for larger homes or higher‑demand hydronic systems.\u003c\/p\u003e\n\n\u003cp\u003eIntegrated tankless coil delivering on‑demand 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 providing 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\u003eService‑friendly layout with accessible burner, controls, and piping connections.\u003c\/p\u003e\n\n\u003cp\u003eQuiet operation supported by Weil‑McLain’s combustion chamber and cast‑iron block design.\u003c\/p\u003e\n\n\u003cp\u003eIdeal Applications\u003cbr\u003eHomes needing a high‑capacity oil boiler that provides both hydronic heat and domestic hot water via a tankless coil, especially where chimney venting is already in place.\u003c\/p\u003e","brand":"Installed HVAC Pros","offers":[{"title":"Default Title","offer_id":48665118900475,"sku":"W\/MPWTGO4","price":9462.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9406\/6171\/files\/28212.jpg?v=1776257977","url":"https:\/\/installedhvacpros.com\/products\/weil-mclain-386701029-oil-fired-boiler","provider":"Installed HVAC Pros","version":"1.0","type":"link"}