An HVAC (Heating, Ventilation, and Air Conditioning) engineer who specializes in designing, installing, and maintaining heating and cooling systems for residential, commercial, and industrial buildings. knowledge of thermodynamics, fluid mechanics, and heat transfer to design systems that provide optimal indoor air quality and temperature control. HVAC engineer design and capability to specify HVAC systems for new construction projects or retrofitting existing buildings. This includes selecting equipment such as boilers, chillers, air handlers, and ductwork, as well as designing control systems and energy-efficient strategies. System analysis: HVAC engineers use computer simulations and analysis tools to model HVAC systems and evaluate their performance. This can help identify potential problems and optimize system efficiency. System maintenance: HVAC engineers oversee the installation and maintenance of HVAC systems to ensure they are working properly and efficiently. This may involve troubleshooting problems, repairing equipment, and performing preventative maintenance. Code compliance: HVAC engineers must ensure that all systems meet local, state, and federal building codes and safety regulations.