{"product_id":"castair-5-hp-commercial-single-two-stage-air-compressor-up-to-18-3-cfm-100-psi-30-80-gal-asme-tank","title":"Castair 5 HP Commercial Single \u0026 Two-Stage Air Compressor – Up to 18.3 CFM @ 100 PSI, 30–80 Gal ASME Tank","description":"\u003cdiv style=\"font-family: Arial, sans-serif; font-size: 15px; line-height: 1.7; color: #222; max-width: 900px; margin: 0 auto;\"\u003e\n\u003ch2 style=\"font-size: 24px; font-weight: bold; color: #000;\"\u003eCastair 5 HP Commercial Single \u0026amp; Two-Stage Air Compressor — Up to 18.3 CFM @ 100 PSI, 30–80 Gal ASME Tank\u003c\/h2\u003e\n\u003cp\u003eThe Castair Commercial Series is a heavy-duty 5 HP garage and shop air compressor built around a slow-RPM, oil-lubricated cast iron pump for quiet operation and long life. Running on standard single-phase power with a 3450 RPM motor that has built-in overload protection, it needs no magnetic starter — just plug into the proper circuit and go. Choose single-stage (factory set to 125 PSI) for general shop air or two-stage (factory set to 175 PSI) for higher pressure, in a range of ASME tank sizes and vertical or horizontal layouts to fit your space. Built to order by Castair, a family-owned Minnesota manufacturer since 1991.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy It's Different:\u003c\/strong\u003e Commercial Series pumps are built for service life: precision steel connecting rods with automotive-type rod insert bearings at the crankshaft and needle bearings at the wrist pin, disc-and-spring valves for easy service and efficiency, and four-ring pistons that reduce oil carry-over. Single-stage models use smooth-running V-twins for 360-degree cooling with a bleeder pressure switch for load-less starts; two-stage models add tapered roller bearings at both ends of the crankshaft and a mechanical centrifugal unloader for a load-less start-up every time. An easy-to-read oil sight glass and automotive-type intake filter\/silencer round out the package.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Garages, auto shops, and small commercial operations that want durable, quiet 5 HP shop air on standard single-phase power without the complexity of a magnetic starter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Choose single-stage (125 PSI) or two-stage (175 PSI), your ASME tank size (30, 60, or 80 gallon), and vertical or horizontal orientation. All run on 230V single-phase power.\u003c\/p\u003e\n\u003cp style=\"border: 1px solid #d00; padding: 10px; background: #fff8f8;\"\u003e\u003cstrong\u003e⚠️ BEFORE YOU ORDER — PLEASE READ:\u003c\/strong\u003e This is a built-to-order shop compressor. \u003cbr\u003e• \u003cstrong\u003eElectrical:\u003c\/strong\u003e requires a dedicated 230V single-phase circuit (approx. 22A). No magnetic starter required — the motor includes built-in overload protection — but installation should follow local code and use proper grounding. \u003cbr\u003e• \u003cstrong\u003eLead time:\u003c\/strong\u003e built to order — confirm current production lead time before purchase. \u003cbr\u003e• \u003cstrong\u003eWeight \u0026amp; placement:\u003c\/strong\u003e 295–560 lb depending on configuration; requires a level floor and adequate ventilation. Larger tanks ship by freight. \u003cbr\u003eIt is the customer's responsibility to verify electrical service, floor space, and ventilation before purchase and installation.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty 5 HP\u003c\/strong\u003e on standard single-phase power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo magnetic starter required\u003c\/strong\u003e — 3450 RPM motor with full 15% service factor \u0026amp; built-in overload protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-stage (125 PSI) or two-stage (175 PSI)\u003c\/strong\u003e options\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUp to 23.7 CFM @ 0 PSI \/ 18.3 CFM @ 100 PSI\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlow-RPM oil-lubricated cast iron pump\u003c\/strong\u003e for quiet operation \u0026amp; long life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods\u003c\/strong\u003e with automotive insert \u0026amp; needle bearings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc \u0026amp; spring valves\u003c\/strong\u003e and \u003cstrong\u003efour-ring pistons\u003c\/strong\u003e for efficiency \u0026amp; easy service\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowder-coated ASME tank\u003c\/strong\u003e with rigid metal belt guard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper discharge \u0026amp; unloader tube\u003c\/strong\u003e for strength and heat dissipation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy-to-read oil sight glass\u003c\/strong\u003e and automotive-type intake filter\/silencer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #000; color: #fff; text-align: left; padding: 10px; font-size: 15px;\" colspan=\"8\"\u003eCastair Commercial Series 5 HP — Single-Phase, 230V\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eStage\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eTank\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003ePump RPM\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eCFM @ 100 PSI\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eShut-Off\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eL × W × H (in)\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eWt (lb)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eC513HA8\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eSingle\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e30 gal Horiz.\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1088\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18.3\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e125 PSI\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e33 × 18 × 38\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e295\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eC516VA8\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eSingle\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e60 gal Vert.\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1088\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18.3\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e125 PSI\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e34 × 20 × 68\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e335\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eC518VA8\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eSingle\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e80 gal Vert.\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1088\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18.3\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e125 PSI\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e32 × 24 × 66\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e435\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eC518HA8\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eSingle\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e80 gal Horiz.\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1088\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18.3\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e125 PSI\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e64 × 20 × 41\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e435\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eC518VC1\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eTwo\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e80 gal Vert.\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e715\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18.1\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e175 PSI\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e32 × 24 × 74\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e560\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eC518HC1\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eTwo\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e80 gal Horiz.\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e715\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e18.1\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e175 PSI\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e64 × 20 × 48\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e560\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 14px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #000; color: #fff; text-align: left; padding: 10px; font-size: 15px;\" colspan=\"2\"\u003eShared Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCastair (Spicer, Minnesota — family-owned since 1991)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCommercial cast iron piston air compressor (single or two-stage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eTotal HP\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e5 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eUp to 23.7 CFM @ 0 PSI | up to 18.3 CFM @ 100 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eMotor\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eSingle-phase, 3450 RPM, 15% service factor, overload protection (no mag starter required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eVoltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e230V single-phase (~22A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eTank\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e30 \/ 60 \/ 80 gal, powder-coated ASME-certified, vertical or horizontal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eShut-Off Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eSingle-stage 125 PSI | Two-stage 175 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eASME-certified air receiver tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eCastair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e5 HP commercial cast iron compressor on a powder-coated ASME tank\u003c\/li\u003e\n\u003cli\u003eSingle-phase 3450 RPM motor with built-in overload protection\u003c\/li\u003e\n\u003cli\u003eRigid metal belt guard, copper discharge \u0026amp; unloader tube\u003c\/li\u003e\n\u003cli\u003eOil sight glass, automotive-type intake filter\/silencer\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e(Factory-mounted options available — air-operated auto drain #ADVSM, auto drain #SDV03M, 1″ silencer #SA100M, Right-From-the-Start kit #RFS001, belt-guard aftercooler #BGAC1M, vibration pads #VP1004. Contact us to configure.)\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eManuals \u0026amp; Documentation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"#\"\u003eCastair Commercial Series Installation \u0026amp; Operation Manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#\"\u003eCastair Commercial 5 HP Spec Sheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"CastAir","offers":[{"title":"Single Stage-30 Gal Horizontal","offer_id":45137518362739,"sku":"C513HA8","price":1984.92,"currency_code":"USD","in_stock":true},{"title":"Single Stage-60 Gal Vertical","offer_id":45137518395507,"sku":"C516VA8","price":1984.92,"currency_code":"USD","in_stock":true},{"title":"Single Stage-80 Gal Vertical","offer_id":45137518428275,"sku":"C518VA8","price":2302.48,"currency_code":"USD","in_stock":true},{"title":"Single Stage-80 Gal Horizontal","offer_id":45137518461043,"sku":"C518HA8","price":2658.8,"currency_code":"USD","in_stock":true},{"title":"Two Stage-80 Gal Vertical","offer_id":45137518493811,"sku":"C518VC1","price":2564.28,"currency_code":"USD","in_stock":true},{"title":"Two Stage-80 Gal Horizontal","offer_id":45137518526579,"sku":"C518HC1","price":2945.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/3650\/5203\/files\/test1-3.webp?v=1782503513","url":"https:\/\/bluecollarplanet.com\/products\/castair-5-hp-commercial-single-two-stage-air-compressor-up-to-18-3-cfm-100-psi-30-80-gal-asme-tank","provider":"Blue Collar Planet","version":"1.0","type":"link"}