An Unbiased View of hvac system design
GRD means Grille, Register and Diffuser. GRD signifies a part is either a grille, a sign up or maybe a diffuser. It's a generic expression employed to explain something that’s source/return and exhaust/intake air.PTAC means Packaged Terminal Air Conditioner. PTAC can be a compact form of air conditioners that combines the compressor, condenser, e