{"product_id":"heavy-duty-shop-air-compressor-industrial-series-model-no-i15324hc3-s","title":"Heavy Duty Shop Air Compressor Industrial Series - Model No. I15324HC3-S","description":"\u003ch2\u003eCastair I15324HC3-S: 15HP 3-Phase Industrial Air Compressor — 120 Gallon Horizontal with Aftercooler\u003c\/h2\u003e\n\n\u003cp\u003eThe Castair I15324HC3-S is a 15-horsepower, 3-phase, 120-gallon horizontal industrial air compressor with Castair's C3 cast iron pump and a factory-mounted belt guard aftercooler. The horizontal tank layout is the practical choice when overhead clearance is tight or when you need to position the compressor in a low-ceiling mechanical room, under a mezzanine, or along a wall where vertical height is a constraint.\u003c\/p\u003e\n\n\u003cp\u003ePerformance is identical to the vertical I15312VC3-S: 795 RPM pump speed, 61.7 CFM free air delivery, 50.2 CFM at 175 PSI, and 1,185 lbs. The difference is geometry — 69 x 24 x 62 inches versus 44 x 30 x 82 inches. The horizontal unit is longer but significantly shorter, which changes what installation options are available in your shop.\u003c\/p\u003e\n\n\u003cp\u003eThe -S designation means it ships with the BGAC2M belt guard mounted aftercooler — the same 50 CFM unit used on all 15HP Castair industrial models. This reduces discharge air temperature before it enters the tank, condensing moisture before it reaches your tools, airlines, or spray equipment.\u003c\/p\u003e\n\n\u003ch2\u003ePump Design — C3 Cast Iron\u003c\/h2\u003e\n\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump designation:\u003c\/strong\u003e C3 — Two-stage, W3 cylinder configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRPM:\u003c\/strong\u003e 795 — slow-speed operation reduces heat and extends service life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll cast iron:\u003c\/strong\u003e Cylinders, heads, valve plates, crankcase — no aluminum components in the compression system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered roller bearings\u003c\/strong\u003e at both ends of the crankshaft\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision steel connecting rods\u003c\/strong\u003e with automotive-type rod insert bearings at crankshaft and wrist pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisc and spring valves\u003c\/strong\u003e — field-replaceable without specialized tooling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-ring pistons\u003c\/strong\u003e for efficiency and reduced oil carry-over\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal unloader\u003c\/strong\u003e — loadless start-up protects the motor every cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil capacity:\u003c\/strong\u003e 1 gallon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTank and Structure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank capacity:\u003c\/strong\u003e 120 gallons, horizontal orientation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank finish:\u003c\/strong\u003e Powder-coated ASME-rated steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e Channel steel saddle on horizontal models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety valve:\u003c\/strong\u003e ASME-rated, factory installed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt guard:\u003c\/strong\u003e Totally enclosed metal with aftercooler mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge lines:\u003c\/strong\u003e Copper tubing or stainless braided flex line\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMotor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower:\u003c\/strong\u003e 15HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-phase (requires 3-phase service)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor speed:\u003c\/strong\u003e 1725 RPM industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService factor:\u003c\/strong\u003e 15% minimum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax working pressure:\u003c\/strong\u003e 175 PSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePerformance Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor output:\u003c\/strong\u003e 15 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical:\u003c\/strong\u003e 3-phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank capacity:\u003c\/strong\u003e 120 gallons, horizontal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump RPM:\u003c\/strong\u003e 795\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree air delivery (0 PSI):\u003c\/strong\u003e 61.7 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivery at 175 PSI:\u003c\/strong\u003e 50.2 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax pressure:\u003c\/strong\u003e 175 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (LxWxH):\u003c\/strong\u003e 69 x 24 x 62 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1,185 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftercooler:\u003c\/strong\u003e BGAC2M included (belt guard mounted, 50 CFM)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHorizontal vs. Vertical — Choosing the Right Tank Orientation\u003c\/h2\u003e\n\u003cp\u003eThe choice between horizontal and vertical tank comes down to your installation space:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorizontal (this unit — I15324HC3-S):\u003c\/strong\u003e 69 x 24 x 62 inches — lower profile, better for low-ceiling spaces, mechanical rooms, or under mezzanines. Footprint is longer but narrower in depth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVertical (I15312VC3-S):\u003c\/strong\u003e 44 x 30 x 82 inches — smaller floor footprint, taller. Better when ceiling height allows and floor space is the constraint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBoth deliver identical performance: same pump, same motor, same CFM. Pick the orientation that fits your installation space. If you have 10+ foot ceilings and need to minimize floor footprint, go vertical. If ceiling height is limited, the horizontal is the right call.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCastair I15324HC3-S compressor — fully assembled\u003c\/li\u003e\n\u003cli\u003eBGAC2M belt guard mounted aftercooler (50 CFM)\u003c\/li\u003e\n\u003cli\u003eASME safety valve (factory installed)\u003c\/li\u003e\n\u003cli\u003ePressure switch with unloader\u003c\/li\u003e\n\u003cli\u003eTotally enclosed metal belt guard\u003c\/li\u003e\n\u003cli\u003eCopper discharge and unloader tubing (or stainless braided flex line)\u003c\/li\u003e\n\u003cli\u003eOwner's documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eMagnetic motor starter is not included unless specifically ordered. 3-phase electrical service and proper motor starter are required for installation.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAvailable Configurations — 15HP Horizontal Industrial Series\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eI15312HC2-S:\u003c\/strong\u003e 15HP, 3-phase, 120gal Horizontal, C2 pump, 898 RPM, 45.3 CFM @ 175 PSI, 69x24x50, 980 lbs — lighter with slightly lower CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI15324HC3-S (this unit):\u003c\/strong\u003e 15HP, 3-phase, 120gal Horizontal, C3 pump, 795 RPM, 50.2 CFM @ 175 PSI, 69x24x62, 1,185 lbs — more CFM, heavier C3 pump\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen Does a Shop Need This?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eYou need maximum CFM from a 15HP horizontal unit — 50.2 CFM at 175 PSI supports 3-5 technician stations running impact guns, air ratchets, and similar tools\u003c\/li\u003e\n\u003cli\u003eYour shop has low ceiling height or overhead obstructions that make a vertical compressor impractical\u003c\/li\u003e\n\u003cli\u003eYou have 3-phase electrical service and need a compressor matched to that power supply\u003c\/li\u003e\n\u003cli\u003eAftercooler-treated air is important for your application (painting, sandblasting, precision pneumatics)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h2\u003e\n\u003cp\u003eWe have specialized in industrial air compressors and shop equipment since 2016. Our staff understands the difference between a C2 and C3 pump, can walk you through your electrical requirements, and will help you choose between horizontal and vertical configurations based on your actual shop layout — not just what happens to be in stock.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e to commercial addresses in the lower 48 states\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support\u003c\/strong\u003e at 866-217-0063 before and after your purchase\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFull Castair manufacturer warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest buying guidance\u003c\/strong\u003e — we size compressors to real shop needs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthorized dealer\u003c\/strong\u003e with direct Castair support access\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342561304789,"sku":"I15324HC3-S","price":8271.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/heavy-duty-shop-air-compressor-industrial-series-model-no-i15324hc3-s","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}