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This is a good question but difficult to simply answer yes or no. 

As the LED display technology goes, normally we do not need air conditioner system for the outdoor LED screen except the extreme installation enviroment. LED screen is very sensitive to the heat and working enviroment. For outdoor LED screen of permanent installation in tropical areas or extreme hot climate areas like Middle East, with air conditioner, the screen can work in adequate temperature to avoid overheating and other relative problems to get longer lifespan and much less maintenance.

Is air conditioner necessary for outdoor LED screen? 1

Below with a reference list to show how much cooling(BTU) we need for the LED screen base on the sizes.

SQM of LED Screen

Sq. Ft of the space

BTU/H (Cooling Capacity)

9-14

100-150

5000

14-23

150-250

6000

23-28

250-300

6500

28-33

300-350

7250

33-38

350-400

8000

38-41

400-450

8750

41-46

450-500

9650

46-51

500-550

10500

51-65

550-700

12500

65-93

700-1000

15000

93-111

1000-1200

17700

111-149

1200-1600

19000-24000

149-167

1600-1800

24000-27000

167-260

1800-2800

27000-33000

 

There are other factors need to be considered if we go with air conditioner system.
1. The cost of adding air conditioning system 
2. The cost of the structure of air conditioning system
2. The cost of more power consumption
4. The assembly and maintenance cost

DOIT VISION provides the IP68 series LED screen no need any ventilation / air conditioning system, 5 years warraty

Is air conditioner necessary for outdoor LED screen? 2