The Manual D procedures match duct system resistance (pressure drop) to blower performance (as defined by the HVAC system manufacturer’s blower performance tables). This delivers appropriate airflow to the rooms and spaces to be conditioned while ensuring that system airflow is compatible with the operating range of the HVAC equipment.
California, New Mexico, New York, and Hawaii are the first states to apply for federal rebate money for high-efficiency equipment. Twenty-three states have received funding to set up and manage rebate programs.
ACCA 2024 will feature educational sessions and speakers focused on topics such as workforce development, leadership, finance, and the technical aspects of the HVACR business.
ACCA’s program was developed by contractors, for contractors, to focus on measurable standards and performance metrics that verify high-quality HVAC work.
To address the move toward heat pumps, ACCA has updated Manual S accordingly. Along with setting clear requirements, the revised standard expanded its guidance for variable-capacity equipment.
The ACCA accreditation program involves a comprehensive review of the contractor’s professional licenses and business registration documents, plus the completion of orientation training. The contractor is also subject to third-party verification of ACCA’s Quality Contractor Elements.
