What to choose 110 vs 220 air conditioner

[Boluker]

Help me to solve this problem, please

[Kertyni]

As I understand you, only recently I myself was thinking about buying an air conditioner and settled on a choice between 110 vs 220 air conditioner . In the end, I was not mistaken with the choice of 220 and now I can safely enjoy spending time in a cool room. The air surrounding us highly contributes to this. This is where an air conditioner comes into play.

[Desmondnon]

I have a Central air conditioner unit in the guest room that I want to have serviced.
How much does your typical annual A/C maintenance cost and what does the service include?