I have used Alber twice. Once to replace an old boiler & bring the entire system up to snuff at a Charity on Maple Avenue in Merchantville at which I have been active for about 4 years in various volunteer positions. They succeeded at a quick pace, on time & on budget. The 2nd times was at my house in Voorhees to install a new AC, Heater, Water Heater & Humidifier. We had worked with at least 3 contractors over the years and no one could get the rooms close to equal in temperature, winter or summer. Three rooms in 3 different parts of the house were 4 to 8 degrees colder in winter and warmer in summer. Bill, the owner constructed a special vent in one room, changed a baffle, added a baffle and discovered that an air return vent was really a heat/ac vent. When they finished the job in a professional manner, on time and at a competitive price, the rooms were within 1-3 degrees different in temperature. A remarkable feat! The savings annual are apparent, but the comfort is beyond "the moon." I highly recommend them. Rich L, Voorhees, NJ