I was wondering the same thing about my heating and air conditioning in Sevenoaks. Although the air conditioning improves the air quality, it seemed wasteful to run it in the comfortable months in spring and autumn. I decided to do some more research on the benefits of air conditioning and realised it may be a good idea to use it throughout the year.
An air conditioning company explained to me that the air purifying effects of the air conditioner not only make you feel more comfortable, but it also removes dust and dirt from the air that may damage things in your home or business premise. I decided this was a huge benefit to my business as I could really cut down on cleaning costs and time.