{"product_id":"braemar-tqm-618-gas-ducted-heater-air-pressure-switch-18pa-sy639826","title":"Braemar TQM 618 Gas Ducted Heater Air Pressure Switch 18 Pa","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis genuine Braemar TQM 618 gas ducted heater air pressure switch is a critical safety component. Rated at 18 Pa, it's designed specifically for condensate systems, ensuring your heater operates safely and reliably by detecting proper airflow.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eYou know the drill – when a gas ducted heater starts acting up, especially with intermittent ignition or lockout errors, the air pressure switch is often the first suspect after checking for blocked flues. Having a reliable, genuine replacement on hand saves call-backs.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eBest For\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eHVAC Service Technicians\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eGas Fitters\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003eMaintenance Teams for Ducted Heating Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eCompatibility\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003eThis air pressure switch (PN. 639826) is specifically designed for the Braemar TQM 618 gas ducted heater. It's also compatible with other Braemar models that use the same part number, including the THM 618, TQM 632 \u0026amp; X, TQM 623 \u0026amp; X, TQS 720, and TQ 516 series. Always cross-reference the part number and model before installation.\u003c\/p\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eFeatures\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eGenuine Braemar Part:\u003c\/strong\u003e Ensures perfect fit and reliable operation as per manufacturer specifications.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003e18 Pa Rating:\u003c\/strong\u003e Calibrated for the precise pressure differential required in Braemar condensate gas ducted heaters.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eGold Tech for Condensate:\u003c\/strong\u003e Designed for robust performance in environments prone to condensate presence.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eSafety Critical Component:\u003c\/strong\u003e Essential for preventing unsafe operation due to blockages or fan failures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 16px; margin-bottom: 20px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"color: #007acc; border: 1px solid #e0e0e0; padding: 10px; text-align: left; background-color: #f5f5f5;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e639826\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003ePressure Rating\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e18 Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eCondensate Gas Ducted Heaters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003eWeight (approx)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px;\"\u003e1.00 KGS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e1 x Braemar TQM 618 Gas Ducted Heater Air Pressure Switch 18 Pa Gold Tech for Condensate (PN. 639826)\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eUsing It on the Job\u003c\/h2\u003e\n\u003col style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eSafety First:\u003c\/strong\u003e Before starting any work, ensure the gas supply is isolated and the electrical power to the heater is disconnected and locked out.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eAccess:\u003c\/strong\u003e Carefully access the existing air pressure switch within the heater's compartment, usually near the fan or flue system.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eRemove Old Switch:\u003c\/strong\u003e Disconnect the vacuum tubes and electrical wiring from the old switch. Note their original positions carefully or take a photo.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eInstall New Switch:\u003c\/strong\u003e Mount the new genuine Braemar switch in the same position. Reconnect the vacuum tubes and electrical wiring as they were.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eTest Operation:\u003c\/strong\u003e Restore gas and electrical supply. Perform a full operational test of the heater to confirm the switch is functioning correctly and the heater cycles normally without errors.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003eLimitations \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cul style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eProfessional Installation Required:\u003c\/strong\u003e Installation of this part, which involves gas and electrical connections, must be performed by a qualified and licensed professional to ensure safety and maintain warranty validity.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eNon-Refundable Condition:\u003c\/strong\u003e This product, like other ignition and electrical parts, is shipped in a tamper-evident satchel and is non-refundable once opened. Ensure you confirm compatibility before breaking the seal.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Only for the specific Braemar models and part numbers listed. Do not use if your model or part number differs.\u003c\/li\u003e\n\u003cli style=\"font-size: 16px; line-height: 1.6; margin-bottom: 10px;\"\u003e\n\u003cstrong\u003eAustralian Standards:\u003c\/strong\u003e Always follow Australian standards and Safe Work guidance during installation and servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote style=\"border-left: 4px solid #007acc; background-color: #f9f9f9; font-style: italic; padding: 15px; margin: 20px 0;\"\u003e\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003e\u003cstrong\u003eTradie Pro Tip:\u003c\/strong\u003e Before replacing the switch, always check the condensate drain lines for blockages or water ingress, as these can mimic a faulty pressure switch by preventing proper pressure differential. A good clean might save you a new part.\u003c\/p\u003e\u003c\/blockquote\u003e\n\u003ch2 style=\"color: #007acc; border-bottom: 2px solid #f0f0f0; padding-bottom: 8px; margin-top: 35px;\"\u003ePair With\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.6; margin-bottom: 20px;\"\u003ePair this air pressure switch with other Braemar gas heater spare parts or general gas ducted heating accessories from HVAC Shop to complete your service kit. Consider checking your ignitor and flame sensor for wear when performing maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Automated FAQ Schema --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What Braemar models is this pressure switch compatible with?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This pressure switch (PN. 639826) is compatible with Braemar TQM 618 gas ducted heaters. It also suits other models like THM 618, TQM 632 \u0026 X, TQM 623 \u0026 X, TQS 720, and TQ 516, provided they use the same part number.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the pressure rating of this switch?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Braemar air pressure switch (SY639826) has a specific pressure rating of 18 Pa. This calibration ensures it accurately detects the correct airflow conditions for safe operation in Braemar condensate systems.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need a licensed professional to install this part?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, installation of this gas and electrical component must be carried out by a qualified and licensed professional. This ensures safety, correct operation, and maintains the validity of your heater's warranty, adhering to Australian standards.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"Braemar","offers":[{"title":"Default Title","offer_id":43660724863035,"sku":"SY639826","price":78.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0316\/7787\/4235\/files\/truck-icon_98ed785c-4432-40b6-b42c-477ec7f5e007.png?v=1781670433","url":"https:\/\/www.hvacshop.com.au\/products\/braemar-tqm-618-gas-ducted-heater-air-pressure-switch-18pa-sy639826","provider":"HVAC Supply Shop","version":"1.0","type":"link"}