HVAC engineers

 A boiler is a closed vessel in which water or other fluid is heated, typically by burning fuel or using electricity. Here are some key aspects of a boiler: 1. Types of Boilers:     - Steam Boiler     - Hot Water Boiler     - Gas Boiler     - Oil Boiler     - Electric Boiler     - Condensing Boiler 2. Components:     - Burner     - Heat Exchanger     - Controls     - Pump     - Expansion Tank 3. Functions:     - Provides hot water or steam for heating, cooking, or cleaning     - Can be used for space heating, water heating, or both 4. Efficiency:     - Measured by AFUE (Annual Fuel Utilization Efficiency) or thermal efficiency     - Ranges from 80% to 98% efficient 5. Maintenance:     - Regular cleaning and inspection     - Replacement of filters and worn parts     - Annual professional maintenance recomm...