Don't leave the air conditioner on.
Don't leave the air-conditioner on.
The air‐conditioner doesn't work.
This air conditioner doesn't operate properly.
The air-conditioner isn't taking in enough air.
I cannot live without an air conditioner.
The air conditioner doesn't work.
That air-con was fixed.
The air conditioner is out of order.
The air conditioner doesn't work.
The air conditioner dehumidifies the air in the summer
Don't you have an air conditioner?
I want you to check if the air conditioner is broken.
The water cooler is out of order.
The ventilation is out of order.
I slept with the air conditioner left on.
The water cooler is out of order.
The air conditioner is set in the wall.
An air conditioner is an optional extra.