5 Tips about hvac system components You Can Use Today
GRD stands for Grille, Sign up and Diffuser. GRD implies a ingredient is possibly a grille, a sign-up or maybe a diffuser. It's a generic time period employed to describe something that’s supply/return and exhaust/intake air.I've worked in the HVAC industry for around ten years. I have been a contractor, a project supervisor and a system designer