What happened to Del Val? All their numbers are no longer in service. They were excellent and always timely. I just had a high efficent heater, AC and tankless water heater installed by them last summer (June 2009) and they were out in the fall for the check up. No mention on closing etc........... If they are no longer in service; any suggestions for another company. Had them for over 6 years! This is a bummer!