A blower cooler is an evaporative air cooler that uses a centrifugal blower, a drum-shaped wheel, instead of a propeller-type axial fan. A blower builds more air pressure, so it keeps its airflow through long or bent ducts and usually runs quieter. An axial cooler moves large volumes efficiently when the air path is short and open.
Axial fan vs centrifugal blower
| Axial fan cooler | Centrifugal blower cooler | |
|---|---|---|
| Fan type | Propeller blades | Drum-shaped blower wheel |
| Air pressure | Lower | Higher |
| Best with | Short, straight ducts or direct discharge | Longer ducts, bends and grills |
| Noise | Higher at the same airflow | Lower |
| Typical use | Factory duct coolers, large open sheds | Offices, shops, restaurants, ducted rooms |
Why pressure matters
Every metre of duct, every bend and every grill resists the air. A fan that cannot push against that resistance delivers much less air at the far end than its rated figure. A centrifugal blower is built to work against resistance, so more of its rated airflow reaches the last outlet.
The E-cool Blower Cooler
- Airflow: 18,000 or 22,000 CMH
- Motor: 1,100 W BLDC with 100% copper winding
- Noise: 65 dB
- Control: remote and Wi-Fi app
- Tank: 60 litres
- Power: 110 V, 220–240 V or 380–415 V versions
- Use: indoors and outdoors
What BLDC adds
A BLDC (brushless DC) motor is electronically controlled. It uses less power than a comparable induction motor at part speed and gives smooth speed control, which is why it pairs well with a remote or app.
When to choose a blower cooler
- The air must travel through a longer duct or several bends
- Noise matters: restaurants, showrooms, offices, places of worship
- You want remote or app control
- Export markets that need 110 V or 60 Hz versions
When an axial duct cooler is better
- Large factory floors and warehouses that need 25,000 to 50,000 CMH per unit
- Short duct runs with wide outlets
- The lowest cost per cubic metre of air
See the E-cool Blower Cooler and the axial duct air coolers.
Frequently asked questions
What is a blower cooler?
An evaporative cooler with a centrifugal blower instead of an axial fan. It builds more pressure, so it works better through ducts and runs quieter.
Is a blower cooler better than a fan cooler?
For ducted and noise-sensitive spaces, yes. For large open floors needing very high airflow, axial duct coolers are more economical.
What is a BLDC air cooler?
A cooler driven by a brushless DC motor, which is efficient at part speed and gives smooth speed control.