With the weather heating up, many people are in the market for a new air conditioning unit this summer. 

According to experts, you may not want to opt for a cheaper, smaller version because it may not be powerful enough to cool down large rooms. They also recommend having a professional install your AC so that it's secured properly. 

If choosing between a window model and a portable one, one expert says that a window unit is more energy efficient and easier to repair. 

Don't forget to get your air conditioner cleaned because mold can build up, making you sick and forcing you to use too much energy.