HVAC
ELECTRICAL
ELECTRICAL
HVAC heat load calculation, ductwork layout, equipment design and specification, air duct accessories, air inlet and outlet, refrigerant piping, energy recovery, split system and VRF system, clean air, and ventilation.
ELECTRICAL
ELECTRICAL
ELECTRICAL
Power, lighting, elevators, fire alarm, data communication, alarm system, smoke and carbon monoxide detectors, grounding and bonding, panelboards, switchboards, wiring devices, and standby generator.
PLUMBING
ELECTRICAL
PLUMBING
Piping sizing and layout design. Domestic water system, RPZ/Backflow prevention, sanitary sewer system, grease waste system, grease trap, storm drainage, plumbing equipment and fixtures, pumps, gas design, and gas load calculation.
LOW VOLTAGE "LV" DESIGN, CONSTRUCTION, AND MAINTENANCE
A complete network solution, Internet/Data, Firewall/Routing/Switching, Cams, Acoustic, Enterprise wireless for high density businesses, Network storages, and more...
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Other services OHH offers
Value engineering, sustainable lighting design, Thermal Storage...