This publication provides introductory technical guidance for mechanical engineers and other professional engineers and construction managers interested in designing and installing medical gas and vacuum systems for hospitals, and medical and dental clinics. Here is what is discussed: 1. GENERAL 2. MEDICAL GAS AND VACUUM SYSTEMS 3. LABORATORY GAS AND VACUUM SYSTEMS FOR RESEARCH AND MEDICAL LABORATORIES 4. ORAL EVACUATION SYSTEM 5. DENTAL COMPRESSED AIR SYSTEMS 6. DESIGN FOR DENTAL UNIT WATER LINES 7. FUEL GAS SYSTEMS.