{"product_id":"allied-air-23u37-downflow-gas-furnace-90000-btu-96-afue","title":"Allied Air 23U37 Downflow Gas Furnace 90000 Btu 96% Afue","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ALLIED AIR 23U37 is a single-stage, downflow natural gas furnace rated at 90,000 BTU\/h output and 96 percent AFUE efficiency. It uses a constant torque ECM blower motor to deliver steady, even airflow throughout the heating cycle, reducing temperature swings common with standard PSC motors. The 409 stainless steel primary heat exchanger uses crimped, non-welded construction for long-term durability, while the AL 29-4C stainless steel secondary heat exchanger handles condensate conditions in a high-efficiency system. A silicon nitride ignitor provides reliable hot-surface ignition. This unit is ENERGY STAR certified. Licensed HVAC technicians handle installation and commissioning.\u003c\/p\u003e\n\u003cp\u003eThe 23U37 is designed for residential downflow applications where supply air is discharged downward through the floor or a plenum beneath the unit. The cabinet is 21 inches wide with a compact 33-inch height, sized for standardized coil fit with matched cooling equipment. It supports direct two-pipe and non-direct one-pipe venting using standard PVC pipe, and the cabinet accommodates left or right utility connections with zero-step horizontal conversion. The unit is rated for up to 4 nominal tons of matched cooling equipment and carries compliance with California South Coast Air Quality Management District low-NOx requirements, making it suitable for installations in restricted emissions jurisdictions.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e96 percent AFUE single-stage operation with ENERGY STAR certification\u003c\/li\u003e\n  \u003cli\u003eConstant torque ECM blower motor for consistent airflow and enhanced cooling SEER ratings when paired with matched equipment\u003c\/li\u003e\n  \u003cli\u003e409 stainless steel primary heat exchanger with crimped non-welded construction\u003c\/li\u003e\n  \u003cli\u003eAL 29-4C stainless steel secondary heat exchanger for high-efficiency condensing duty\u003c\/li\u003e\n  \u003cli\u003eSelf-diagnostics stores last 10 fault codes independent of power interruption\u003c\/li\u003e\n  \u003cli\u003eControl board includes electronic air cleaner and humidifier terminals\u003c\/li\u003e\n  \u003cli\u003eCertified for direct two-pipe and non-direct one-pipe PVC venting\u003c\/li\u003e\n  \u003cli\u003eLow-NOx compliant for South Coast AQMD jurisdictions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eThe 23U37 is designed for downflow residential gas furnace installations and is compatible with matched cooling equipment at up to 4 nominal tons. No specific compatible model numbers were provided in the product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a licensed HVAC technician in accordance with the National Fuel Gas Code (NFPA 54), local mechanical codes, and the manufacturer installation instructions. Shut off gas supply and disconnect electrical power before any service work. Venting must be installed per the appliance venting tables and local jurisdiction requirements using rated PVC pipe for direct or non-direct configurations. Verify control board wiring connections for accessories such as electronic air cleaners and humidifiers match terminal designations before energizing the unit.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel Type\u003c\/strong\u003e: Natural Gas\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput\/Output Capacity\u003c\/strong\u003e: 90,000 BTU\/h\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAFUE Efficiency\u003c\/strong\u003e: 96 percent\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStage\u003c\/strong\u003e: Single Stage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downflow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Cooling Capacity\u003c\/strong\u003e: 4 tons\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlower Motor Type\u003c\/strong\u003e: Constant Torque ECM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCabinet Width\u003c\/strong\u003e: 21 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCabinet Height\u003c\/strong\u003e: 33 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Heat Exchanger Material\u003c\/strong\u003e: 409 Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Heat Exchanger Material\u003c\/strong\u003e: AL 29-4C Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIgnition Type\u003c\/strong\u003e: Silicon Nitride Hot Surface\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVenting\u003c\/strong\u003e: Direct Two-Pipe or Non-Direct One-Pipe PVC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications\u003c\/strong\u003e: ENERGY STAR, South Coast AQMD Low-NOx\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ALLIED AIR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 23U37\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ALLIED AIR","offers":[{"title":"Default Title","offer_id":51283999883570,"sku":"23U37","price":2786.76,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309278193.png?v=1781065592","url":"https:\/\/voomisupply.com\/products\/allied-air-23u37-downflow-gas-furnace-90000-btu-96-afue","provider":"Voomi Supply","version":"1.0","type":"link"}