The best performing Portable Evaporative Cooler on the market!*

That will blow the rest away!
Free Delivery
to Metro Adelaide suburbs^
Click & Collect
Local pickup available from Lonsdale, South Australia

Convair Mastercool™ Portable Evaporative Cooler

Keep your cool this SIZZLING Summer with the Convair MastercoolTM.

Cooling that’s OUT OF THIS WORLD, but WON’T COST the EARTH!

For just $449, you can be comfortably cool, day and night.

Offer only available online!

Australian designed, Australian made and Australian owned.


Convair Mastercool™
Evaporative Cooler


For Medium to Large Rooms – 100m3

  • Superior cooling performance
  • Large 14 litre water tank for overnight operation
  • Advanced corrosion-free polymer construction
  • Fitted with castors for easy portability
  • Economical and ultra-quiet
  • High velocity Stealth® fan technology
  • 3 speed cooling, or fan only
  • Adjustable directional vanes
  • Aspen cooling pad helps to maximise the cooling effect
  • 24 month warranty
  • Free Delivery available to Adelaide Metro postcodes^
  • Local pickup available from Lonsdale, SA

Technical Information

Air Flow

1,010 m3/hr

Water Capacity

14 Litres

Cooling Capacity*

1.2 kW

Dimensions (mm)

Shipping: 765 (H) x 565 (W) x 370 (D)

Operating: 1020 (H) x 540 (W) x 430 (D)


86 Watts


Shipping: 13 kg

Net: 12 kg

*Achievable with ambient 38˚C DB (dry bulb), 21˚C WB (wet bulb) and room temperature of 27.4˚C (AS2913).

Benefits of Portable Evaporative Cooling

Sometimes, it’s not possible or practical to get a fixed cooling system installed – and that’s where our portable cooler comes in. Enjoy instant climate control right where you need it with the super-effective cooling capability of our Convair Mastercool™. It is versatile, easy to move and incredibly cheap to operate.

Running costs for an evaporative cooler are significantly lower than any other form of portable cooling, saving you money while doing your bit for the environment.

You’ll be blown away with Convair’s design and performance that delivers real cooling, real reliability and real value. The Convair Mastercool™ is also backed by a two year warranty.


More cooling capacity

Delivers in-home performance which is far ahead of the rest of the field, the coolest portable evaporative cooler in the world!

Superb airflow

The sophisticated, high-tech and ultra-powerful Stealth® fan, results in more air flow, ideal for cooling medium to large living areas.

Huge power savings

Save on running costs when compared to other types of portable cooling.

Whisper quiet cooling

The Stealth® fan maximises air flow and minimises noise levels, providing a superior performance on both counts.

Delivers Safer-Air™

100% fresh, filtered outside air,
expelling the stale recycled air.

Australian Made

Proudly a 100% Australian owned company, designing and manufacturing world-leading air conditioning products.

Patio Cooling

Suitable for both indoor and outdoor living

Alfresco Living

Don’t let the heat limit your outdoor enjoyment, on those stifling hot days, when you need some cool airflow under your patio, with its superior cooling performance, the Mastercool™ can also provide spot cooling in your outdoor patio area. Enjoy the serenity of alfresco living without the disturbance of noisy cooling systems. Your portable cooler may be used when attended in a covered patio, alfresco and external area not directly exposed to weather. 

Portable evaporative coolers are perfect for busy families where children and pets keep coming in and out of your home. 

portable cooler on patio with white chair and table

Why is the Convair MastercoolTM so much better?

For evaporative coolers to work, they need three critical elements:

  • filter media (cooling pads),
  • fan system, and
  • water distribution system

Because of its advanced design features, the Convair Mastercool™ portable cooler has cleverly combined these essential components to maximise the cooling effect that it delivers. Some other evaporative cooler brands provide no cooling at all – they just blow air around like a fan.

Convair Mastercool Cooling Area in Room

Large water tank for overnight operation

3 fan speeds
plus cooling control

Ultra efficient
Stealth® fan

Compare Portable Evaporative Cooler Brands & Models

Harness the Power of the Cold Hard Facts

Portable evaporative cooler models of competitors have been tested against the Convair Mastercool™ in the NATA approved Meridian Laboratory, demonstrating the superior cooling performance. This compares the cooling capacity of different models available in Australia, for consumers to make informed decisions for their home comfort, using actual, deliverable kilowatts of cooling capacity. 






Air Temp




Convair Mastercool






Bonaire Crown 10i






Bonaire Diet 12i






Bonaire Profile 3D 30i






Glen Dimplex EWTEV9






Dimplex 7L DCEVP7






Delonghi EV250






Polar Breeze 1500






Polar Breeze 480






Click 5L CLL04Y31






Click 12L CAC002Y31






* Based on 38oC inlet, 27.4oC room (AS2913).
** Standard Dry Airflow.
*** Leaving Air DB (dry bulb) Temperature.
– All results were corrected to Standard Air (1.2kg/m3) where applicable.
– All units were tested at 230V and 50Hz.
– Negative cooling capacity results indicate the supply air temperature did not reduce below 27.4oC and no discernible cooling effect would be produced.

Comparison to Portable Refrigerative Air Conditioners

Portable evaporative coolers and portable refrigerative air conditioners offer distinct cooling solutions with differences in cooling mechanisms, energy efficiency, environmental friendliness, and air quality. Refrigerative air conditioners, also known as reverse cycle air conditioners are more costly to run, use harmful refrigerants, and require access to a window or outlet to expel hot air. Evaporative coolers deliver a natural, healthy and cost-efficient way to cool a space in your home. 



Air Conditioner

Use with window OPEN



Use with window CLOSED



Requires exhaust hose and vent



Cooling effect*



Low energy use



No harmful refrigerants






Works outdoors



* Measured in accordance with Australian Standard AS2913-2000.
** Can be used when attended in a covered patio, alfresco and external area not directly exposed to weather.

What to look for in a Portable Evaporative Cooler

Media (pads)


Water Distribution System

What to
look for:

Air must pass evenly through a moistened pad:

- Look for a design that provides a consistently thick pad for the air to pass through.

Lots of air means lots of cooling:

- Look for a big fan that provides even distribution of air through the filter media (pad).

The water distribution system must be capable of completely saturating the filter media (pads):

- Look for a system that doesn’t leave any dry or open sections of the pad, as air will pass through but will not be cooled.



Convair Mastercool uses Aspen cooling pads. These pads force all the air to come in contact with evaporating water, so you get the maximum cooling effect.

Convair Mastercool has an advanced fan that is designed to deliver maximum airflow with minimum noise. This type of fan forces air to pass through the saturated filter pad in far greater volume than others can.

Convair Mastercool uses a patented water distribution system that ensures the filter media stays totally saturated. This unique channel design resists clogging and delivers a steady, even water distribution at all times.

Australian Made

Harness the power of dinkum Aussie cool, cool cooling

Built by Australians, for the Australian climate

Seeley International is proudly a 100% Australian owned company, designing and manufacturing world-leading air conditioning products for Australia and the world. As Australia’s largest air conditioning manufacturer, we are a global leader in developing ingenious, energy-efficient cooling and heating products.

Being made in Australia, you can rely on build quality, availability of parts and after sales service. We’re extremely passionate, and dedicated to strengthening the Australian economy, supporting local employment and building on the skills of our workforce.

Seeley International Production Operator working with machinery

Frequently Asked Questions

A portable evaporative cooler cools the air using the natural process of evaporation; and can be moved from room to room, or even to an outdoor area.

Based on the principles of evaporation, air is pumped through water-infused cooling pads. As the air is pushed through the cooling pads, the water evaporates and the heat in the air is absorbed, which lowers the air temperature. A fan then pushes the cool air out into the room. 

  1. Open window or door.
  2. Add water to the maximum line, plug the cooler into a standard power outlet, and switch on.
  3. Adjust the water flow and fan speed to your comfort level and enjoy!
  4. For optimum performance, place the back of the cooler next to a window or door opened 15cm. Open a window of door opposite the cooler to create a cross air flow.

Portable evaporative coolers are energy-efficient, cost-effective and eco-friendly; plus they are easy to setup and use. 

Regular maintenance includes cleaning the water reservoir, replacing cooling pads when they become worn, and cleaning or replacing the water pump and filter as needed. 

With Aspen pads, you should expect to change these every 3 or 4 years. This can vary with water quality, frequency of operation and local conditions.

Proper maintenance ensures optimal performance. Failure to replace filter pads when they are past their useful life may result in reduced efficiency/performance of the portable evaporative cooler.

No. Portable evaporative coolers are known to be quieter than traditional air conditioning units. They operate with a low hum, making them suitable for both indoor and outdoor use without causing excessive noise. 

A portable evaporative cooler is most effective in well-ventilated areas with open windows or doors. The unit relies on fresh air to work properly.  

Portable evaporative coolers may indirectly reduce odours in your home; however, they do not have the capability to directly remove or eliminate strong or persistent odours.

It is important to place the unit on a stable service to prevent tipping, keep electrical cords away from water. Look at your manual for more safety guidelines. 

Orders are dispatched within 2 business days and delivery times are estimated between 2-5 business days, depending on your delivery location. Express orders are dispatched within 1 business day and delivery times are estimated between 1-3 business days, depending on your delivery location. Orders are subject to stock availability.

The Convair Mastercool™ has a 24 month warranty. Please refer to your owners manual for further information.

If the evaporative cooler is within 24 months of date of purchase, you can log a claim by emailing, include the product serial number, description of the fault and attach a copy of the original purchase invoice. 

Troubleshooting help will be provided, otherwise you may be required to return the goods to be inspected. 

Spare parts including the pump belt, aspen cooling pads can be bought online from our Seeley Parts Shop.  

*Compared to all domestic portable cooler models. 

^Free Delivery – Conditions apply – Metro Adelaide postcodes as defined by Australia Post standard parcel post service, S1 zone.

Shipping And Delivery Policy:
Seeley International uses Australia Post to deliver your online product purchases. Outside of areas with free shipping, shipping costs are dependent on and calculated based on the delivery location. Exact shipping costs are calculated in the shopping cart and will be added to the order before checkout. Orders are dispatched within 1 business day and standard delivery times are estimated between 3-5 business days, depending on your delivery location. Express shipping is available and must be added to the order before checking out. Express orders are dispatched within 1 business day and delivery times are estimated between 1-3 business days, depending on your delivery location. Orders are subject to stock availability.

Shipping Destinations:
Convair portable evaporative coolers are shipped within Australia. We do not accept international orders for portable coolers.

Click & Collect:
Collection available Monday-Friday from Lonsdale, South Australia. Closed weekends and public holidays. Further details will be supplied upon submitting an order. 

Refund & Returns Policy:
We recommend you choose carefully. We will not give refunds if you simply change your mind or make a wrong decision. Our products come with a warranty. You can view the warranty terms and conditions HERE