Hot, steamy summers are conducive to installing air conditioning in our homes. When driving in the car, we all like to turn on a blast of fresh air to make a long journey more pleasant, or to relax in a cool room when the heat outside is tropical. Despite investing in an air conditioner, many people forget to regularly service and clean it, which results in many dangerous diseases. Here are some guidelines on how best to look after an air conditioner and what can result if the unit is not cleaned.