MEP Engineering · Engineering Glossary
HVAC stands for Heating, Ventilation, and Air Conditioning — the systems that control temperature, humidity, air quality, and air movement inside a building. HVAC engineering encompasses load calculations, equipment selection, duct and piping design, and energy code compliance.
A commercial HVAC system design starts with a cooling load and heating load calculation (Manual J for residential, ASHRAE methods for commercial) that determines how much heating and cooling the space needs under design conditions. The engineer then selects equipment — rooftop units, chillers, heat pumps, VRF systems — and designs the duct distribution, outside air intake, exhaust, and controls. HVAC systems must comply with ASHRAE 62.1 for ventilation, ASHRAE 90.1 or Title 24 for energy efficiency, and local mechanical codes. Apex Grid provides HVAC engineering where project-specific credentials and authorization are verified.
Apex Grid Engineering maintains this glossary as a resource for architects, contractors, developers, and property owners who encounter unfamiliar engineering terminology on their projects.
View All Engineering TermsApex Grid's licensed PEs provide mep engineering services across multiple jurisdictions — with fast quote turnaround and permit-ready documents.
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