{"product_id":"mastercool-a-c-system-flush-kit-with-flush-gun-33-oz-canister-36-hose-90-150-psi-professional-hvac-r-cleaning","title":"Mastercool A\/C System Flush Kit with Flush Gun, 33 oz Canister — 36\" Hose, 90–150 PSI Professional HVAC\/R Cleaning","description":"\u003cp\u003e\u003cstrong\u003eMastercool 91046-A is a professional A\/C system flush kit that pairs a flush gun, 36\" hose, 33 oz. aluminum canister and adapter to purge oil, debris and sludge from condensers, evaporators and hoses using shop air.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis all-hardware kit lets technicians quickly set up a controlled flush process when retrofitting systems, replacing compressors, or cleaning individual components. The toolset is built for compatibility with any lightweight flushing solvent that can be atomized with compressed air, and it runs on standard shop pressures between 90 and 150 PSI. The kit does not include solvent and is not intended for flushing compressors, expansion devices, or filter\/drier components.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Mastercool 91046-A remove oil and debris from A\/C components?\u003c\/h3\u003e\n\u003cp\u003eThe kit converts shop air into a high-velocity flushing stream that dislodges and carries out refrigerant oil, sludge and particulate from lines, condensers and evaporators. Using a dedicated canister and a 36\" hose, the flush gun directs solvent-air mixture through the component until the discharge runs clean.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOperates at 90–150 PSI to generate effective flow and cleaning power.\u003c\/li\u003e\n  \u003cli\u003eFlush each component individually — hoses, condensers, evaporators.\u003c\/li\u003e\n  \u003cli\u003e33 oz. aluminum canister holds solvent for one-person operation and easy handling.\u003c\/li\u003e\n  \u003cli\u003eCompatible with common refrigerant systems (R134a, R1234yf, R12, R22, R410a) when paired with appropriate solvent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the setup and safety limits technicians need to know?\u003c\/h3\u003e\n\u003cp\u003eSetup is straightforward: attach the canister to the flush gun via the supplied adapter, connect the 36\" hose, and feed shop air to the gun. Respect the equipment’s rated pressure and component exclusions to avoid damage or safety hazards.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMax rated pressure: 150 PSI — do not exceed this limit.\u003c\/li\u003e\n  \u003cli\u003eOperating range: 90–150 PSI for consistent performance.\u003c\/li\u003e\n  \u003cli\u003eDo NOT flush compressors, expansion valves, orifice tubes, filter driers, or accumulators with this kit.\u003c\/li\u003e\n  \u003cli\u003eFlush solvent must be compatible and is sold separately (see Mastercool 91049 line).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich solvents and systems are compatible with the 91046-A kit?\u003c\/h3\u003e\n\u003cp\u003eThe flush gun and canister are solvent-agnostic for lightweight solvents that can be mixed with compressed air, giving shops flexibility to choose chemistry based on the refrigerant and contamination type. Mastercool recommends using approved flushing agents and following solvent manufacturer guidance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with solvents intended for mixing with pressurized air (solvent not included).\u003c\/li\u003e\n  \u003cli\u003eSuitable for use on systems charged with R134a, R1234yf, R12, R22 and R410a when solvent is appropriate.\u003c\/li\u003e\n  \u003cli\u003eMastercool 91049 line offers compatible flush solvents in multiple sizes.\u003c\/li\u003e\n  \u003cli\u003eAlways follow solvent handling, ventilation and disposal requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Mastercool 91046-A A\/C System Flush Kit is aimed at automotive and HVAC\/R technicians, shop owners, and retrofit specialists who need a durable, simple-to-use flushing tool for component-level cleaning. It’s ideal for professionals who prefer a hardware-only solution that pairs with their chosen solvent, appreciate a proven U.S.-based brand, and require a kit that performs reliably at standard shop pressures. If you need an all-in-one flushing gun, hose and canister package with broad solvent compatibility and clear pressure limits, this kit provides the hardware to get that job done.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include flush solvent?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The 91046-A includes only the gun, hose, canister and adapter. Use a compatible solvent such as Mastercool 91049 products sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this kit on compressors and filter dryers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Do not flush compressors, expansion valves, or filter driers with this kit; it is designed for hoses, condensers and evaporators only.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":48084161986718,"sku":"B000HAUXLE","price":87.74,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mastercool-91046a-front-view-kit.jpg?v=1785847906","url":"https:\/\/northtrailauto.ca\/products\/mastercool-a-c-system-flush-kit-with-flush-gun-33-oz-canister-36-hose-90-150-psi-professional-hvac-r-cleaning","provider":"North Trail Auto","version":"1.0","type":"link"}