The goal for a Heating, Ventilation and Air Conditioning System (HVAC) is to provide proper air flow, heating, and cooling to each room.
MBM first provides a key design and installation considerations (fabrication, installation and performance testing) that need to be met to achieve a quality system. An HVAC (Heating, Ventilation and Air Conditioning) system should, above all, be properly sized to provide correct air flow and meet room-by-room calculated heating and cooling load.
MBM verifies, while the HVAC system is being installed, the static air pressure drop across the handler is within manufacturer and design specifications to have the capacity to meet the calculated loads. MBM also double checks the supply and return ductwork is sealed properly to provide proper air flow throughout the system, and that the system is balanced to maintain neutral air pressure in the home.
The return system is examined to determine it is sized correctly and provides proper air flow to the fan, and prevents air entering the HVAC system from polluted zones (e.g., garage, storage, attic, etc.).
The duct air temperature gain or loss is minimized between the air handler and room registers, and between return registers and the air handler. Lastly the system is properly charged with refrigerant; and, the system has proper burner operation and draft.
MBM is an authorized dealer of Goodman, Amana, Carrier and Trane heating and cooling systems.
The following should be followed in the design and installation of the HVAC system to ensure efficiency and comfort:
- Determine room-by-room loads and air-flows using ACCA Manual J calculation procedures.
- Size duct system according to ACCA Manual D calculation procedures.
- Layout duct system on floor plan, accounting for the direction of joists, roof hips, fire-walls, and other potential obstructions. Determine register locations and types, duct lengths, and connections required to produce layout given construction constraints.
- Size HVAC equipment to sensible load using ACCA Manual S procedures.
- Install equipment and ducts according to design specifications, using installation requirements and procedures from the Uniform Mechanical Code, the Air Diffusion Council, SMACNA,
- California Residential Energy Efficiency Standards, and manufacturers' specifications, to ensure the duct system will be substantially air tight.
- Charge the system appropriately, and verify charge with the evaporator superheat method or subcooling method.
- Check for proper furnace burner operation and fire-box drafting.
- Test the system to ensure it performs properly by determining (1) the system is properly sized, (2) it does not leak, and has either (3a) proper air handler fan flow, and proper plenum static pressures, or (3b) proper room and return air flows, and proper plenum static pressures.