By outdoor AC, mostly confused with evaporative air coolers, We here mean the portable air conditioners (have a compressor).
For cooling of completely open or semi-open areas and events, we usually recommend other options like evaporative air coolers.
We describe as “outdoor” because they are mostly placed outdoors, with only 1 duct for cool air needed. While could be placed indoors as well, but then additional duct required to take out the hot air.
The most common portable A/C units:
The most used capacities in UAE are 1, 2.1 and 5.7 Ton portable AC units. Certainly, Multiple units could be used to cover the needed volume.
Most commonly used portable outdoor A/C units in Dubai
| Capacity (Ton) | Applicable area (m2) | Refrigerant | Price range (AED) |
| 1 | 10-20 | R22 | 1100-1900 |
| 2.1 | 20-35 | R410a | 7600-8600 |
| 5.7 | 40-60 | R410a | 11900-12900 |
Please keep in mind that these outdoor AC’s are available at AC rental in UAE page.
FAQ’s
Yes, quality portable outdoor ACs can function in Dubai’s hot climate, though their efficiency depends on BTU rating, area size, and proper maintenance. For best results in extreme heat (45°C+), choose units with higher BTU ratings (10,000+) and keep them well-maintained.
Running costs depend on the unit’s energy efficiency and usage patterns. On average, a 10,000 BTU portable AC operating 8 hours daily costs approximately 8-15 AED per day in electricity, depending on your DEWA tariff rate and the unit’s efficiency rating.
Yes, but their effectiveness decreases in completely open spaces. They work best in semi-enclosed outdoor areas like covered patios, gazebos, or balconies where the cool air can be somewhat contained. For fully open spaces, consider evaporative coolers or misting systems as alternatives.
For Dubai’s climate, calculate 30-40 BTU per square foot of space (rather than the standard 20 BTU for milder climates). For example, a 150 sq ft balcony would require a 4,500-6,000 BTU unit, while larger areas of 300 sq ft would need 9,000-12,000 BTU units or higher.
Regular maintenance is crucial in Dubai’s dusty environment:
Clean filters every 2-4 weeks. Clean the condenser coils monthly. Check for dust in the vents and exhaust hose. Consider a dust cover when not in use
Portable ACs offer flexibility for renters since they don’t require permanent installation and can be moved between rooms or taken when moving. However, fixed units generally provide better cooling efficiency and lower operating costs for permanent residences.