Have you noticed frost and ice starting to form on the evaporator coil? Are you starting to feel less and less cool air leaving your air conditioner? It sounds like you need some AC maintenance in Markham, ON. We at Metro Air Limited strongly suggest that you have an annual AC tune-up. Like your car, your air conditioner needs a good look over now and then to keep your home and family cool and comfortable. With regular AC maintenance, there will be less chance of it breaking down during those long warm, and humid summer days in Markham when temperatures can reach over 80 degrees. Regular maintenance will also ensure that your air conditioner is running safely and at its most efficient, saving you from large energy bills.