--- title: "Portable Evaporative Air Cooler (18Y / 20H)" url: https://tiercooling.com/product/portable-evaporative-air-cooler-18y-20h/ date: 2026-09-07 modified: 2026-10-09 lang: en author: "info@tiercooling.com" description: "RDF18Y/20H — Portable evaporative air cooler for workstations, events and outdoor sites — plug-and-play mobile spot cooling with no ducted installation." image: https://tiercooling.com/wp-content/uploads/2026/09/RDF-180D-2.jpg word_count: 789 --- # Portable Evaporative Air Cooler (18Y / 20H) No installation, no ductwork, no compressor: the **RDF18Y mobile industrial cooler** rolls to where the heat is - welding bays, loading docks, events, rented workshops - delivering **18,000 m3/h from 1.1 kW on 220 V**, with a 300 L tank and 100-150 m2 coverage. For smaller zones the compact **RDF80** (5,000 m3/h, 45 L, APP control, 30-50 m2) is the companion model; both are specified below. ## Why teams buy the mobile cooler - **Fully mobile.** Heavy-duty castors and a balanced cabinet let one person reposition cooling between stations; the RDF18Y needs only a 220 V socket and a hose-fill. - **18,000 m3/h axial delivery** through an 810x510 mm outlet - genuinely industrial airflow, not a domestic 'air cooler' in a larger shell. - **300 L tank, about 65 L/h water use** for long unattended runs; low-water protection stops the pump running dry. - **RDF80 option for focused cooling:** 5,000 m3/h centrifugal, four-speed 300 W motor, 12 m throw, smart APP control, 23 kg. - **Same 5090 pad technology** as the fixed RDF range: above 80% evaporation efficiency, 4-15 C supply-air drop depending on climate. - **83 kg industrial build** with panel protection and a serviceable pad - designed for daily plant-floor use. ## Technical specifications | Model | Voltage | Airflow | Current | Power (kW) | Dimensions (mm) | Air outlet (mm) | Fan type | Weight (kg) | Water tank | Water use | Noise | Coverage | Throw distance | | ----- | ------- | ------- | ------- | ---------- | --------------- | --------------- | -------- | ----------- | ---------- | --------- | ----- | -------- | -------------- | | RDF18Y | 220V/50Hz | 18,000 m3/h | 4.8 A | 1.1 | 1100x1100x2070 mm | 810x510 mm | Axial | 83 | 300 L | 65 L/h | <=75 dB(A) | 100-150 m2 | - | | RDF80 | 220V/50Hz | 5,000 m3/h | - | 0.3 (variable) | 460x390x1270 mm | - | Centrifugal | 23 | 45 L | 5-8 L/h | - | 30-50 m2 | 12 m | RDF18Y = heavy-duty industrial mobile unit; RDF80 = compact mobile unit with APP control and four-speed motor. RDF20H appears in the legacy product title but not in the 2026 catalogue - only the RDF18Y remains in the current line-up. ## Where portable cooling is the right answer Mobile units fit three situations permanent ducting cannot: rented or multi-tenant buildings, intermittent hot spots (seasonal packing lines, maintenance shut-downs, events under canopies), and spot relief at furnaces, presses or loading bays. The RDF18Y covers 100-150 m2 around itself; the RDF80 covers a 30-50 m2 workstation cluster and fits through standard doorways. The product title historically references an '18Y/20H' pair. The RDF20H is not present in the 2026 catalogue - it is not listed on the manufacturer's Chinese site either, so the 20H designation has been dropped from the product title. ## Backed by a specialist air-treatment manufacturer - 20+ years focused on evaporative cooling and large industrial fans; National High-Tech Enterprise and CRAA-listed manufacturer. - Deputy Director Unit of the national evaporative-cooling industry committee, with 40+ patents and self-developed, patented molds. - Product liability underwritten by CPIC (policy ADNGD0207121Q000109N); type-test, protection-grade and CE motor-conformity documentation supplied with export orders. - RDF equipment is published in service with automotive, food and electronics manufacturers including SAIC-GM-Wuling, FAW-Volkswagen, GAC Toyota/Honda, PepsiCo, Foxconn, Panasonic, Gree, Midea and Haier. ## Ordering the RDF18Y / RDF80 portable evaporative air cooler - **MOQ:** 10 units - **Lead time:** 10 units ex stock; 100 units in about 7 days; 500 units in about 20 days (larger orders confirmed case by case) - **Trade terms:** FOB Shenzhen - **Payment:** T/T - 35% deposit, 65% balance paid before shipment - **Warranty:** 2-year warranty on the complete unit per the factory's warranty policy: motor 2 years, controller 2 years, cooling pad 2 years, water pump 1 year. Overseas spare-parts support (wear-parts list, quotation and dispatch lead time) is confirmed with your order. - **Documentation:** Factory inspection report and English user manual are supplied. Complete-unit CE/SASO certificates can be arranged for export orders upon request. Send your floor dimensions, ceiling height and heat-load description (a sketch or photo is enough) - we reply with a model recommendation, layout and quotation within one business day via the [contact page](/contact/). ## Frequently asked questions ### Does it need installation? None. Fill the tank (or connect the float-valve feed), plug into a standard 220 V circuit and switch on. The unit is fully mobile on castors. ### How long does the 300 L tank last? Water consumption is about 65 L/h in hot, dry conditions and less in humid air or at lower speed; many users connect the auto-fill hose for continuous operation. ### Can it be used outdoors? It is intended for indoor and covered-industrial use - marquees, loading bays under canopies, workshops. Direct rain exposure is outside the design conditions. ### What is the difference between the RDF18Y and the RDF80? RDF18Y is the 18,000 m3/h, 83 kg, 300 L industrial unit for 100-150 m2; RDF80 is a 5,000 m3/h, 23 kg, 45 L compact unit with APP control and 12 m throw for 30-50 m2 workstations. ### Does it work in humid climates? It retains ventilation and air-movement benefit everywhere; the evaporative drop is 4-10 C in humid conditions and 4-15 C in dry heat. ## Related products - [RDF18 Series Fixed Evaporative Cooler](/product/rdf-18-series-evaporative-air-cooler-side-discharge/) - [Axial Fan Evaporative Air Cooler](/product/axial-fan-evaporative-air-cooler/) - [HVLS Fans for Factories](/product/hvls-fans-for-factories/) ## More from TierCooling - [View installed project references](/projects/) - [About the manufacturer](/about/) - [All products in this category](/product-category/portable-evaporative-coolers/) ## FAQ ### What is a portable evaporative cooler used for? Spot cooling: bringing cooled airflow directly to workstations, assembly points or event areas without installing fixed equipment. It is the flexible option when cooling needs move around the site. ### Where does a portable evaporative cooler work best? In hot, dry conditions and well-ventilated or semi-open spaces - workshops, warehouses, outdoor work points - where its evaporative cooling effect is strongest. ### What does it need to run? A standard power supply and a water supply for the cooling pads; exact electrical and water requirements for the 18Y / 20H models are listed in the product specifications. ### Portable cooler or fixed installation? Choose portable units for flexible, low-installation spot cooling; choose fixed evaporative coolers or HVLS systems when the target area is permanent and coverage matters more than mobility.