{"product_id":"castair-refrigerated-compressed-air-dryer-25-to-161-cfm-37-f-dew-point-ul-listed","title":"Castair Refrigerated Compressed Air Dryer – 25 to 161 CFM, 37°F Dew Point, UL Listed","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 Refrigerated Compressed Air Dryer — 25 to 161 CFM, 37°F Dew Point, UL Listed\u003c\/h2\u003e\n\u003cp\u003eA refrigerated air dryer is the most effective way to get clean, dry compressed air. Castair dryers chill the air with refrigerant to condense out water vapor, then drain it automatically — holding a steady 37°F dew point so there's virtually no condensation at your air tools, paint booth, or pneumatic equipment. Removing that moisture lowers overall air-system maintenance cost and downtime by 15–25%. Available in five sizes from 25 to 161 CFM, all UL listed. Made in the USA by Castair, a family-owned Minnesota manufacturer since 1991.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy It's Different:\u003c\/strong\u003e Castair builds these with a stainless steel heat exchanger for even heat transfer and long life, an automatic moisture drain that only cycles when water is present (conserving compressed air), and a simple, reliable dew-point indicator — no computer logic or programming needed. Environmentally friendly R134a \/ R407c refrigerant and a quick-connect recharge port round out a low-maintenance, small-footprint design. A properly sized pre-filter is required to maintain warranty and will significantly extend both dryer and air-tool life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Paint booths, air tools, and pneumatic equipment that need genuinely dry air — any shop where moisture is causing rust, finish defects, or tool wear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Choose your CFM size from 25 to 161. Connection size scales with capacity (3\/4″ NPT up to 1-1\/2″ NPT). Optional bypass\/mounting kits are available (see below).\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 \u003cbr\u003e• \u003cstrong\u003ePre-filter required for warranty:\u003c\/strong\u003e a properly sized pre-filter must be installed ahead of the dryer — order one to match. \u003cbr\u003e• \u003cstrong\u003eSize for your air temperature:\u003c\/strong\u003e ratings are based on 100°F inlet \/ 100°F ambient @ 100 psi. At 150°F inlet, capacity drops to 55% of the rating (e.g., a 100 CFM dryer = 55 CFM at 150°F). Size up if your air runs hot — pairing with an aftercooler helps. \u003cbr\u003e• \u003cstrong\u003eElectrical:\u003c\/strong\u003e 115V, 1-phase, 60 Hz, with a 9′ three-prong cord. \u003cbr\u003e• \u003cstrong\u003eMax inlet pressure:\u003c\/strong\u003e 232 psig. \u003cbr\u003eIt is the customer's responsibility to verify CFM (at actual inlet temperature), connection size, and pre-filter sizing before purchase.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintains a 37°F dew point\u003c\/strong\u003e for reliably dry air\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLowers air-system maintenance \u0026amp; downtime 15–25%\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic moisture drain\u003c\/strong\u003e — only cycles when water is present\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel heat exchanger\u003c\/strong\u003e for long life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR134a \/ R407c refrigerant\u003c\/strong\u003e with quick-connect recharge port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable dew-point indicator\u003c\/strong\u003e — no computer logic or programming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e115V \/ 1-phase \/ 60 Hz\u003c\/strong\u003e with 9′ power cord\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax 232 psig\u003c\/strong\u003e inlet pressure\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSmall footprint, lightweight, UL listed\u003c\/strong\u003e\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=\"7\"\u003eCastair Refrigerated Air Dryers — UL Listed, 115V\/1Ph\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;\"\u003eCFM @ 37°F\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eCFM @ 50°F\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eIn\/Out\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eAmps\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eWt (lb)\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eW × D × H (in)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRD25-6K\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e25\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e28\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e3\/4″ NPT\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e3.0\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e57\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e10.6 × 17.9 × 19.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRD59-11K\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e59\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e65\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e3\/4″ NPT\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e6.5\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e73\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e10.6 × 19.1 × 22.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRD71-15K\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e71\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e86\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1″ NPT\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e7.5\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e110\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e11.8 × 23.7 × 22.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRD113-60K\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e107\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e130\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1″ NPT\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e9.0\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e119\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e11.4 × 30.5 × 24.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRD161-37K\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e161\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e181\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e1-1\/2″ NPT\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e11.4\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e137\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e11.4 × 33.7 × 24.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"margin: 8px 0 0; font-size: 14px;\"\u003e\u003cem\u003eCapacities rated at 100°F inlet \/ 100°F ambient @ 100 psi. At 150°F inlet, capacity = 55% of rating.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptional Bypass \/ Mounting Kits\u003c\/strong\u003e\u003c\/p\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=\"2\"\u003eBypass Kits (3\/4″ NPT 3-ball valve bypass, metal flex hose \u0026amp; vibration pads)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eKit #\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd; background: #f3f3f3; text-align: left;\"\u003eFor\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eDM75\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRD59-11K or smaller — mounts dryer on compressor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eDP100\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eRD71-15K or bigger — bypass plumbed, not mounted on compressor\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;\"\u003eRefrigerated compressed air dryer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eDew Point\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e37°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eCFM Range\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e25 – 161 CFM (@ 37°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eRefrigerant\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eR134a \/ R407c\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003ePower\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e115V \/ 1-phase \/ 60 Hz, 9′ cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eMax Inlet Pressure\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e232 psig\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;\"\u003eUL listed\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\u003eOne (1) Castair refrigerated air dryer per the model selected, with automatic drain \u0026amp; 9′ power cord\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003e(Pre-filter required for warranty — sold separately. Optional bypass\/mounting kit (DM75 or DP100) available. Larger sizes available — call for pricing. Contact us to confirm sizing.)\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 Refrigerated Dryer Installation \u0026amp; Operation Manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"CastAir","offers":[{"title":"RD25-6K – 25 CFM 3\/4\" NPT","offer_id":45142654943347,"sku":"RD25-6K","price":1348.2,"currency_code":"USD","in_stock":true},{"title":"RD59-11K – 59 CFM 3\/4\" NPT","offer_id":45142654976115,"sku":"RD59-11K","price":1546.3,"currency_code":"USD","in_stock":true},{"title":"RD71-15K – 71 CFM 1\" NPT","offer_id":45142655008883,"sku":"RD71-15K","price":2001.3,"currency_code":"USD","in_stock":true},{"title":"RD113-60K – 107 CFM 1\" NPT","offer_id":45142655041651,"sku":"RD113-60K","price":3026.8,"currency_code":"USD","in_stock":true},{"title":"RD161-37K – 161 CFM 1-1\/2\" NPT","offer_id":45142655074419,"sku":"RD161-37K","price":3446.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/3650\/5203\/files\/test3-3_1.webp?v=1782831463","url":"https:\/\/bluecollarplanet.com\/products\/castair-refrigerated-compressed-air-dryer-25-to-161-cfm-37-f-dew-point-ul-listed","provider":"Blue Collar Planet","version":"1.0","type":"link"}