{"product_id":"lochinvar-gbn05050-50-gallon-direct-vent-natural-gas-water-heater","title":"Lochinvar gbn05050 50-gallon Direct Vent Natural Gas Water Heater","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe Lochinvar GBN05050 is a 50-gallon direct vent natural gas water heater built for residential indoor installation. It delivers reliable hot water performance with a first hour rating of 83 gallons, making it a strong choice for households with moderate to high daily hot water demand. The unit runs on natural gas and uses a pilot with piezo igniter for straightforward, dependable startup. With a Uniform Energy Factor of 0.65 and a maximum input of 47,000 BTUs, this water heater balances heating power with energy efficiency. The direct vent design pulls combustion air from outside and exhausts flue gases through a dedicated 5-inch flue, making it suitable for tightly sealed modern homes where indoor air quality and safety are priorities. The gas burner is engineered to reduce NOx emissions, meeting Low-NOx emission requirements. This is an important compliance factor for HVAC contractors and plumbers working in regions with strict air quality regulations. Water connections are located at the top of the unit and sized at 0.75 inches, a standard configuration that simplifies installation in most residential settings. The tank carries a nominal capacity of 50 gallons with a rated storage volume of 48 gallons. Both the tank and parts are covered by a 6-year limited warranty, giving contractors and homeowners confidence in long-term reliability. The GBN05050 is not ASME certified and does not include an insulating blanket. It ships in a carton measuring 73 inches tall, 31.5 inches long, and 23.5 inches wide. HVAC technicians and plumbers replacing aging residential water heaters will find the GBN05050 a dependable, code-compliant solution with solid output capacity and efficient combustion performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e83-gallon first hour rating supports high daily hot water demand in residential applications\u003c\/li\u003e\n\u003cli\u003eLow-NOx gas burner meets strict emissions requirements for compliant installations\u003c\/li\u003e\n\u003cli\u003eDirect vent design with 5-inch flue allows safe indoor installation without relying on indoor combustion air\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\u003cp\u003eThe Lochinvar GBN05050 delivers 47,000 BTUs of natural gas heating power with a 0.65 Uniform Energy Factor and Low-NOx compliance, making it a reliable and regulation-friendly choice for residential water heating replacement projects.\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: LOCHINVAR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: GBN05050\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Gallon Capacity\u003c\/strong\u003e: 50 Gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Storage Volume\u003c\/strong\u003e: 48 Gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniform Energy Factor (UEF)\u003c\/strong\u003e: 0.65\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum BTUs\u003c\/strong\u003e: 47,000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirst Hour Rating\u003c\/strong\u003e: 83 Gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source\u003c\/strong\u003e: Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Source\u003c\/strong\u003e: Natural Gas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type\u003c\/strong\u003e: Pilot with Piezo Igniter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlue Diameter\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Connection Location\u003c\/strong\u003e: Top\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Connection Size\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight to TP Relief Valve\u003c\/strong\u003e: 53.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmissions\u003c\/strong\u003e: Low NOx\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type\u003c\/strong\u003e: Indoor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Residential\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTP Relief Valve Included\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimited Tank Warranty\u003c\/strong\u003e: 6 Years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimited Parts Warranty\u003c\/strong\u003e: 6 Years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDestination Country\u003c\/strong\u003e: US\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Height\u003c\/strong\u003e: 73 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Length\u003c\/strong\u003e: 31.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Width\u003c\/strong\u003e: 23.5 inches\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LOCHINVAR","offers":[{"title":"Default Title","offer_id":51120964829490,"sku":"GBN05050","price":2420.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/304883915.jpg?v=1777744456","url":"https:\/\/voomisupply.com\/products\/lochinvar-gbn05050-50-gallon-direct-vent-natural-gas-water-heater","provider":"Voomi Supply","version":"1.0","type":"link"}