Air conditioners may be expensive to buy, but they are priceless on a hot Indian summer’s day. However, when it comes to the point of purchase, it’s easy to get carried away and try to save some money by going it alone with the installation. This is a bad idea, you should get it installed but, installation seems like an expensive add-on to an already expensive appliance. Depending on the type of air conditioner you buy (split systems are the most common), installation is a little more complex than simply plugging in a new fridge, for example.
Professional (and licensed) installation is the best way to make sure your unit is installed correctly, and safely. On top of this, many air conditioning warranties require professional installation, otherwise they will be invalid. Going the DIY route could void the warranty .
So it is always recommended to leave the job to the experts.