I just had a 232000BTU boiler fail in a 4 unit apartment building. I searched several HVAC contractors to do an emergency replacment. Advanced Refrigeration call back in under 1 hr and had a full solution with equipment already prepared and read to start the installation. With in 6 hrs they had the hot water system back up and running. The boiler was installed in less than 24 hrs. I would highly recommend this company.