My central air conditioner stopped working last night. It happened around 6PM. I needed it fixed ASAP because my husband suffers from asthma! I called ASM and explained my situation, the owner told me they would be at my house in 30 minutes, which they were. They diagnosed the problem and fixed it within a few minutes. I was very impressed with both working owners. Not only will I use them again, I will most certainly recommend them to friends.