I had a leak in a water heater, so I contacted One Hour Heating & Air Conditioning operated by Modern Mechanical. They came out and they fixed the leak or thought they did, but then it leaked again. Then they ordered a new water heater and installed it. That one also leaked, but the technician stayed until he resolved the problem. The customer service was great. Everyone was really friendly. They told me everything that was going on so I wouldn't be surprised. They were very professional. I am happy to recommend One Hour Heating & Air Conditioning operated by Modern Mechanical, and I'm sure I'll use them again in the future.