{"product_id":"lennox-14a57-gas-furnace-pressure-switch-2-stage-95af2v","title":"Lennox 14A57 Gas Furnace Pressure Switch 2-stage 95AF2V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LENNOX 14A57 is a 2-stage pressure switch designed for use in gas furnace applications. It monitors draft inducer operation by sensing negative pressure in the flue or combustion air proving circuit, preventing ignition or gas valve operation if proper airflow is not confirmed. This switch is rated at 0.8\/0.5 inches WC, corresponding to its two-stage set points, and serves as a critical safety component in high-efficiency condensing furnace systems. Installation is typically performed by a licensed HVAC technician as part of a scheduled maintenance replacement or diagnostic service call.\u003c\/p\u003e\n\u003cp\u003eThis pressure switch is used on the LENNOX 95AF2V gas furnace, a two-stage, high-efficiency residential condensing furnace. It fits within the low-voltage control circuit and works in conjunction with the draft inducer motor and control board to verify proper venting before allowing the heating sequence to proceed. The dual set points correspond to the low-fire and high-fire stages of the two-stage gas valve operation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDual set points at 0.8 inches WC and 0.5 inches WC for two-stage furnace operation\u003c\/li\u003e\n  \u003cli\u003eFunctions as a safety interlock to confirm draft inducer airflow before ignition\u003c\/li\u003e\n  \u003cli\u003eDesigned for use in high-efficiency condensing gas furnace control circuits\u003c\/li\u003e\n  \u003cli\u003eOEM-style replacement for the LENNOX 95AF2V gas furnace\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on the LENNOX 95AF2V gas furnace as stated by the manufacturer.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis part is installed by a licensed HVAC technician. Before servicing, shut off electrical power to the furnace at the disconnect switch or breaker and allow the system to cool. Verify the replacement switch set points match the original before installation, and inspect the rubber tubing and hose barbs for cracks or blockages during the swap. Follow all applicable local codes and the furnace manufacturer installation instructions.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Pressure Switch, 2-Stage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSet Points\u003c\/strong\u003e: 0.8 \/ 0.5 inches WC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUsed On\u003c\/strong\u003e: 95AF2V Gas Furnace\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.0 pounds\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: LENNOX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 14A57\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LENNOX","offers":[{"title":"Default Title","offer_id":51283902300466,"sku":"14A57","price":58.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309277562.png?v=1781062814","url":"https:\/\/voomisupply.com\/products\/lennox-14a57-gas-furnace-pressure-switch-2-stage-95af2v","provider":"Voomi Supply","version":"1.0","type":"link"}