---
title: "Evaporative Air Cooler Series 26"
url: https://tiercooling.com/posts/evaporative-air-cooler-series-26/
date: 2025-12-22
modified: 2026-09-28
lang: en
author: "info@tiercooling.com"
description: "Location: Home Evaporative Air Cooler Series 26 The full range of Rundongfang permanent magnet evaporative air coolers supports a customizable master-slave intelligent linkage control system, a patented product independently developed..."
categories:
  - "News"
image: https://tiercooling.com/wp-content/uploads/2026/09/news-848.jpg
word_count: 2150
---

# Evaporative Air Cooler Series 26

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[

Location: Home

](https://rundongfang.com/)

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![RDF-26ABT-0005](https://rundongfang.com/wp-content/uploads/RDF-26ABT-0005-768x768.jpg)

![RDF-26ABT-0001](https://rundongfang.com/wp-content/uploads/RDF-26ABT-0001-768x768.jpg)

# Evaporative Air Cooler Series 26

The full range of Rundongfang permanent magnet evaporative air coolers supports a customizable master-slave intelligent linkage control system, a patented product independently developed by Rundongfang.

Rundongfang provides customers with a 26000 air volume permanent magnet evaporative air cooler. Eco-friendly air conditioners, also known as evaporative air coolers, water air conditioners, or water-cooled central air conditioners, are cooling and ventilation units that integrate cooling, ventilation, anti-pollution, and odor removal. In addition to delivering fresh air and lower temperatures for factory workshops, public places, and commercial entertainment venues, eco-friendly air conditioners have another key advantage: energy saving and environmental protection! This is a brand-new upgraded green product with no compressor, no Freon, and no copper tubing. Its key components—namely the evaporative cooling water pad (a multi-layer corrugated fiber composite) and the 1.1KW main motor—consume only 1/8 of the electricity used by traditional central air conditioners, delivering more practical energy savings across all industries.

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### Industrial Large Fans

[Permanent Magnet Servo Direct-Drive Industrial Fan](https://rundongfang.com/industrial-ceiling-fans/pmssm-hvls-fan)
- [Permanent Magnet Large Industrial Fan](https://rundongfang.com/industrial-ceiling-fans/big-hvls-fan)
- [Energy-Saving Industrial Fan](https://rundongfang.com/industrial-ceiling-fans/jie-neng-gong-ye-da-feng-shan)
- [7.2m Large Industrial Ceiling Fan](https://rundongfang.com/industrial-ceiling-fans/7-2m-hvls-fan)
- [Industrial Fans for Factory Workshops](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-factory)
- [Industrial Fans for Logistics and Warehousing](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-warehouse)
- [Industrial Fans for Large Supermarkets and Malls](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-market-mall)
- [Industrial Fans for Amusement Venues](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-playground)
- [Industrial Fans for Livestock Farming](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-livestock)
- [Industrial Fans for Sports and Fitness Centers](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-gym)

- [Permanent Magnet Servo Direct-Drive Industrial Fan](https://rundongfang.com/industrial-ceiling-fans/pmssm-hvls-fan)
- [Permanent Magnet Large Industrial HVLS Fan](https://rundongfang.com/industrial-ceiling-fans/big-hvls-fan)
- [Energy-Saving Industrial HVLS Fan](https://rundongfang.com/industrial-ceiling-fans/jie-neng-gong-ye-da-feng-shan)
- [7.2m Large Industrial Ceiling Fan](https://rundongfang.com/industrial-ceiling-fans/7-2m-hvls-fan)
- [Industrial HVLS Fans for Factory Workshops](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-factory)
- [Industrial HVLS Fans for Logistics and Warehousing](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-warehouse)
- [Industrial HVLS Fans for Large Supermarkets and Malls](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-market-mall)
- [Industrial HVLS Fans for Recreational Venues](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-playground)
- [Industrial HVLS Fans for Livestock Farming](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-livestock)
- [HVLS Industrial Fans for Sports & Fitness](https://rundongfang.com/industrial-ceiling-fans/hvls-fans-for-gym)

### Evaporative Air Coolers

- [Evaporative Air Cooler 18 Series – Top Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-top)
- [Evaporative Air Cooler 18 Series – Side Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-side)
- [Evaporative Air Cooler 18 Series – Bottom Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-bottom)
- [Evaporative Air Cooler 23 Series – Top Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-23-series-top)
- [Evaporative Air Cooler 23 Series – Bottom Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-23-series-bottom)
- [Portable Evaporative Air Cooler 18Y Series](https://rundongfang.com/evaporative-air-cooler/portable-evaporative-air-cooler)
- [Evaporative Air Cooler – Centrifugal Series](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-centrifugal-series)
- [Evaporative Air Cooler Axial Fan Series](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-axial-series)
- [Evaporative Air Cooler 26 Series](https://rundongfang.com/evaporative-air-cooler/zheng-fa-shi-leng-feng-ji-26)
- [Permanent Magnet Evaporative Air Cooler](https://rundongfang.com/evaporative-air-cooler/pmssm-evaporative-air-cooler)

- [Evaporative Air Cooler 18 Series Top Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-top)
- [Evaporative Air Cooler 18 Series Side Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-side)
- [Evaporative Air Cooler 18 Series Bottom Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-18-series-bottom)
- [Evaporative Air Cooler 23 Series Top Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-23-series-top)
- [Evaporative Air Cooler 23 Series Bottom Discharge](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-23-series-bottom)
- [Portable Evaporative Air Cooler 18Y Series](https://rundongfang.com/evaporative-air-cooler/portable-evaporative-air-cooler)
- [Evaporative Air Cooler Centrifugal Series](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-centrifugal-series)
- [Evaporative Air Cooler Axial Series](https://rundongfang.com/evaporative-air-cooler/evaporative-air-cooler-axial-series)
- [Evaporative Air Cooler 26 Series](https://rundongfang.com/evaporative-air-cooler/zheng-fa-shi-leng-feng-ji-26)
- [Permanent Magnet Evaporative Air Cooler](https://rundongfang.com/evaporative-air-cooler/pmssm-evaporative-air-cooler)

### Energy-Saving Low-Carbon Air Conditioners

- [Energy-Saving Low-Carbon Air Conditioner 05C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-05c)
- [Energy-Saving Low-Carbon Air Conditioner 08C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08c)
- [Energy-Saving Low-Carbon Air Conditioner 08F/C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08fc)
- [Energy-Saving Low-Carbon Air Conditioner 08F/S](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08fs)
- [Energy-Saving Low-Carbon Air Conditioner 08S](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08s)
- [Energy-Saving Low-Carbon Air Conditioner 10C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-10c)

- [Energy-Saving Low-Carbon Air Conditioner 05C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-05c)
- [Energy-Saving Low-Carbon Air Conditioner 08C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08c)
- [Energy-Saving Low-Carbon Air Conditioner 08F/C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08fc)
- [Energy-Saving Low-Carbon Air Conditioner 08F/S](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08fs)
- [Energy-Saving Low-Carbon Air Conditioner 08S](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-08s)
- [Energy-Saving Low-Carbon Air Conditioner 10C](https://rundongfang.com/jie-neng-di-tan-kong-tiao/energy-saving-low-carbon-air-conditioner-rdf-10c)

![](https://rundongfang.com/wp-content/uploads/RDF-26ABT-0004-1024x597.jpg)

The Rundongfang patented intelligent centralized control system is a multi-unit control system that integrates one master unit with up to 32 slave units. Through the master unit’s touchscreen, it enables single-unit control, zone control, and full control. The master and slave units communicate via the RS485 standard and support external temperature and humidity sensors for intelligent temperature and humidity control, making it ideal for large factories, warehouses, and centralized control applications.

![](https://rundongfang.com/wp-content/uploads/RDF-26ABT-0003.jpg)

Fast start-up and shut-down: Powering on/off takes 1 minute per unit; switching 32 units on or off simultaneously saves up to 32 minutes.

One-touch control of 32 units: Quickly adjust multiple operating modes such as ventilation, cooling, and oxygen enrichment—say goodbye to the era of single-unit, single-control operation.

Easy troubleshooting: The intelligent cluster multi-unit control system features fault inspection indicators and an automatic fault-clearing function, making troubleshooting easy and repairs efficient.

All-in-one multifunctionality: The intelligent cluster multi-unit control system integrates 12 major functions, built with cutting-edge industry technology—safe, efficient, time-saving, and worry-free.

![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0007-1024x313.jpg)

![](https://rundongfang.com/wp-content/uploads/RDF-26ABT-0002.jpg)

| Model | Voltage/Frequency

(V/HZ) | Max Airflow

(m3/h) | Rated Current

(A) | Power

(KW) | Dimensions

(mm) | Air Outlet Dimensions

(mm) | Net Weight

(KG) | Water Tank Capacity

(L) | Controller Type |
| ----- | -------------------------- | -------------------- | ------------------- | ------------ | ----------------- | ---------------------------- | ----------------- | ------------------------- | --------------- |
| RDF18A-11 | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1000 | 670*670 | 63 | 25 | LCD Panel |
| RDF18A-11S | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1000 | 670*670 | 63 | 25 | LED Panel |
| RDF18A/BT | 220V/50HZ | 18000 | 4.8 | 1.1 | 1100*1100*1000 | 670*670 | 63 | 25 | LCD Panel |
| RDF18B-11 | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1000 | 670*670 | 64 | 35 | LCD Panel |
| RDF18B-11S | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1000 | 670*670 | 64 | 35 | LED Panel |
| RDF18B/BT | 220V/50HZ | 18000 | 4.8 | 1.1 | 1100*1100*1000 | 670*670 | 64 | 35 | LCD Panel |
| RDF18C-11 | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1025 | 730*730 | 64 | 35 | LCD Panel |
| RDF18C-11S | 380V/50HZ | 18000 | 2.8 | 1.1 | 1100*1100*1025 | 730*730 | 64 | 35 | LED Panel |
| RDF18C/BT | 220V/50HZ | 18000 | 4.8 | 1.1 | 1100*1100*1025 | 730*730 | 64 | 35 | LCD Panel |

- Unique high-density rare-earth permanent magnet inner rotor structure — never detaches, never demagnetizes.
- Servo direct drive, brushless and quiet, maintenance-free, with no oil pollution.
- Low power consumption, high power density, compact size, light weight, natural cooling, and low temperature rise.
- Sealed structure design with IP64 protection rating.
- Consumes only 1 kWh of electricity per hour for ventilation and cooling of a 100–150 m² workshop.
- Open-type hose water distribution pan system ensures even and smooth water distribution.
- Equipped with over(voltage)/under-voltage, overcurrent, and phase-failure protection, plus automatic (manual) cleaning function.
- Innovative speed regulation technology allows airflow adjustment according to actual needs. Industry-exclusive fan reversal provides exhaust capability, instantly switching from air supply to air exhaust.
- Three discharge air configurations — top, bottom, and side — can be installed to meet the engineering needs of various environments.
- Made of eco-friendly PP engineering plastic: anti-aging, UV-resistant, and long service life.

![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0011.jpg)

![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0008.jpg)

The core cooling component of Rundongfang air conditioners is the high-efficiency evaporative cooling pad — a “natural multi-layer corrugated plant fiber composite.” Based on the natural physical principle that “water evaporation absorbs heat, and evaporation area affects evaporation efficiency,” a fan delivers air indoors; fresh outdoor air passes through the water-soaked cooling pad, where the air fully contacts the moisture and absorbs sensible heat from the air. This achieves cooling, ventilation, dust removal, and increased indoor oxygen content, making it especially suitable for high-temperature and crowded environments.

Main application areas:
Industrial: workshops of automobile plants, hardware plants, electronics plants, machinery plants, electrical appliance plants, motorcycle plants, leather goods factories, garment factories, pharmaceutical plants, textile mills, shoe factories, plastics plants, and other factories.
Commercial: shopping malls, internet cafes, schools, bus stations, gyms, outdoor sports venues, restaurant kitchens, car washes, etc.
Agricultural: agricultural-specific models can be used in various greenhouses, flower farms, livestock farms, etc.

![](https://rundongfang.com/wp-content/uploads/products-info-002.png)

### Low Investment, High Efficiency

Compared with installing central air conditioning under the same conditions and area, the cost of this cooling equipment is only a fraction of the total investment of central air conditioning.

![](https://rundongfang.com/wp-content/uploads/products-info-004.png)

### Low Power Consumption — Only 1 kWh per Hour

Compared with central air conditioning installed over the same area, the power consumption of this eco-friendly equipment is only a fraction of that of central air conditioning.

![](https://rundongfang.com/wp-content/uploads/products-info-006.png)

### Excellent Air Quality

“RunDongFang” integrates ventilation, air exchange, dust removal and cooling in one unit. It increases the oxygen content of the space and improves work efficiency, with a free choice between natural air supply or targeted spot air supply.

![](https://rundongfang.com/wp-content/uploads/products-info-005.png)

### Powerful Cooling Effect

In southern regions, the unit generally achieves a cooling effect of 4℃-10℃, while in hot, dry regions it can achieve 4℃-15℃, and cools down rapidly.

![](https://rundongfang.com/wp-content/uploads/products-info-007.png)

### Large Airflow, Long Air Delivery

Large airflow of 18000 to 60000 cubic meters per hour, selectable according to customer requirements. Our units feature high air pressure and long-distance air delivery.

![](https://rundongfang.com/wp-content/uploads/products-info-008.png)

### Stable Performance, Reliable Quality

Equipped with a 100mm-thick “5090 evaporative cooling pad” for strong cooling capacity, and three-blade forward-swept axial fan blades for low noise and high efficiency.

![](https://rundongfang.com/wp-content/uploads/products-info-003.png)

### Humidity Adjustment

Adjusts humidity in workplaces where increased air humidity is required.

Air Change Rate Reference for Various Applications
Definition of air change rate:

Air change rate (changes/hour) = total indoor supply air volume (m3/h) ÷ [indoor floor area (㎡) × indoor height (m)];
General environments require an air change rate of 30-40 times per hour;
Crowded public places require an air change rate of 30-40 times per hour;
Crowded, high-temperature locations or production workshops require an air change rate of 40-50 times per hour;
High-temperature production workshops with severe pollution require an air change rate of 50-60 times per hour;
In the more humid southern regions, the air change rate should be appropriately increased, while in the hotter northern regions it can be appropriately reduced.

The calculation method for the number of units depends on the required terminal air outlet type at the site;
Unit model and quantity selection offers flexibility based on site conditions;
Number of units required = site volume × air change rate ÷ actual air supply volume of the unit;
Spot cooling should be configured separately according to actual conditions, and the total air volume can be appropriately reduced;
Indoor air supply ducts must match the model of the evaporative air cooler. Based on the actual installation environment and the required number of air outlets,
design suitable air supply ducts and outlets

- Excellent cooling effect: rapidly lowers the indoor temperature
- Excellent ventilation effect: effective ventilation and air supply, with high indoor oxygen content
- Excellent odor removal: promptly eliminates and reduces odors
- Excellent air purification: effectively purifies dust from indoor air
- Effective removal of harmful gases: quickly reduces harmful substances indoors

![](https://rundongfang.com/wp-content/uploads/products-info-009.png)

![](https://rundongfang.com/wp-content/uploads/rdf-tongfengjiangwen-jpg-2026-0009.jpg)

High evaporation efficiency: the heat exchange area is about 100 times the surface area, with excellent water absorption and an evaporation efficiency of over 80%, delivering an excellent cooling effect.

Low air resistance: the multi-layer composite structure and special bonding angles minimize air resistance, resulting in large air volume and long-distance air delivery.

Good antibacterial performance: tested by authorized institutions, it effectively inhibits bacterial growth and keeps the air fresh and natural.

Prevents algae growth: tested by professional institutions, with Class I anti-algae performance, it effectively prevents algae growth.

Healthy and eco-friendly: complies with RoHS and REACH environmental standards, contains no toxic substances that may cause allergies, and is non-toxic and odorless.

Durable and long-lasting: tested by authoritative institutions, it is corrosion-resistant, easy to clean, and has a long service life.

![](https://rundongfang.com/wp-content/uploads/products-info-011.png)

#### 6T Operating System

High-efficiency thickened cooling pad design
Polymer material with space cross-linking technology: sturdy texture, eco-friendly, pollution-free, easy to clean, free of pungent odors, non-toxic and harmless to the human body; adopts a multi-layer corrugated evaporative cooling pad with a heat exchange area close to 100 times the surface area; the pad thickness reaches 100mm, providing a large contact area, higher evaporation efficiency, and better cooling performance.
Innovative inverter control design
220V variable frequency speed control technology with soft start and stable operation.
Anti-drip streamlined grille design
The grille features an eave-shaped anti-drip design that effectively prevents rainwater from entering, ensuring safe use.
Multi-layer anti-clog filter design
The filter adopts a multi-layer anti-clog design. The filtration area is increased, making it more efficient and cleaner.
Low-failure, high-humidity-resistant motor
High efficiency, low noise, and longer service life; cast iron housing with good heat dissipation and low energy consumption;
Low-failure, high-humidity-resistant, corrosion-resistant all-copper core motor with stable operation.
CFD simulation fluid dynamics design
Large air volume, higher air pressure, lower operating noise, and low energy consumption;
Air duct design based on simulated airflow fields greatly reduces air resistance and noise.

![](https://rundongfang.com/wp-content/uploads/products-info-013.png)

#### 6P Ultra Purification System

High-Efficiency Eco-Friendly Odorless Cooling Pad
Made with polymer materials and spatial cross-linking technology, it is sturdy, non-toxic, harmless, and odorless. It offers excellent filtration performance, high evaporation capacity, great cooling effect, and is easy to clean.
High-Efficiency Multi-Layer Anti-Clogging Filter Design
The multi-layer anti-clogging filter design provides multi-stage filtration, effectively filtering dust, particles, and more.
Open-Type Hose Water Distribution Tray System
Brand-new water-spraying components with a unique water storage tank design ensure even water distribution and never clog.
Multi-Function Cleaning Design
Cleaning functions can be performed both when the unit is turned on and off, for a more thorough clean.
High-Quality Durable Water Pump Design
Wide voltage and frequency range, high-efficiency, wear-resistant premium pump with stable water pressure and low temperature rise.
Capable of 24-Hour Continuous Operation
The pump uses a pure copper wire motor with low noise, low vibration, fast heat dissipation, stable temperature rise, long service life, and fewer failures.
Energy-Free Automatic Water Refill Design
Featuring an energy-free buoyancy-based automatic water refill system with ultra-low failure rate and high stability—quality proven through 100,000 operations, and easier maintenance.

![](https://rundongfang.com/wp-content/uploads/products-info-012.png)

#### 6D Three-Dimensional Protection System

High-Strength Weather-Resistant Housing Design
The body is made of weather-resistant polymer that resists UV rays, corrosion, aging, and deformation.
Innovative PVC Cooling Pad Edge Sealing Design
Provides more secure fixing, less likely to fall off; does not damage the pad surface and eliminates leakage risks.
High-Strength Column Design
The unit features high-strength column design with a firm structure, high strength, and strong load-bearing capacity.
One-Piece Molded Chassis Design
Adopts a one-piece molded, tilted design with high strength and excellent cleaning performance.
Ergonomic Handle Design on the Bottom Basin
The handle fits most hand shapes with a smooth contact surface, making transport convenient and safe.
Sturdy and Durable Motor Bracket Design
The motor bracket is made of sturdy, durable cast iron with strong torsion resistance, producing no resonance noise—ensuring reliable and longer-lasting operation. The bolts securing the motor bracket to the chassis use copper-inlaid one-piece injection-molded punched holes for a more secure connection, safer use, greater durability, and easier maintenance.