An HVAC system provides a controlled indoor environment for building occupants through heating, ventilating, and air conditioning. It maintains indoor air quality, regulates temperature and humidity, and provides occupant comfort. There are several types of HVAC systems including chilled water systems which use water chillers for cooling, condenser water systems which remove and expel heat, and various ventilation systems for air exchange and exhaust like kitchen ventilation. HVAC systems also include smoke exhaust and pressurization systems for fire protection and occupant evacuation.

1. HEATING, VENTILATING,
AND AIR CONDITIONING
(HVAC) SYSTEMS
A PAP2 Training Requirement
MARBONIE G. BALAGUER, BSc CE, TPICQS

2. HVAC
System
PURPOSE
TYPES
DEFINITION
What is an HVAC system?
Why install an HVAC system?
What are the common HVAC system?

3. H
heating
V
ventilating
AC
Air Conditioning
DEFINITION
One of the mechanical installations in a building that is used to provide a controlled
indoor environment to the building occupant in terms of the circulating air’s qualiy,
temperature, and humidity.

4. PURPOSE
Maintain Internal (Indoor) Air Quality
Regulate Internal (Indoor) Temperatures
Regulate Internal (Indoor) Humidity
Provide comfort to the occupants of the building
Heating, Ventilating, Air-Conditioning
HVAC

5. HVAC
TYPES
CHILLED WATER SYSTEM
Heating, Ventilating, Air-Conditioning
CONDENSER WATER
SYSTEM
MECHANICAL VENTILATION
KITCHEN VENTILATION/EXHAUST
SMOKE EXHAUST SYSTEM
PRESSURIZATION SYSTEM

6. CHILLED
Water System
Uses water chillers to provide cooling in a building system and
uses water as secondary refrigerant
PROCESS:
WARM
WATER IN
CHILLED
WATER OUT
Warm water  Heat Exchanger  Cold coils  Chilled Water

7. CONDENSER
Water System
Used to remove the heat from a building or process and expel
the heat to the atmosphere
PROCESS:
Warm water  Condenser  Expel heat  Chilled Water to
circulate

8. MECHANICAL
VENTILATION
Provides fresh air in an enclosed building through the use of a
system of ducts and fans
TYPE:
Direct Ventilation – natural ventilation using windows or fans
Indirect Ventilation – transfer of fan-assisted air using
ductwork system
SYSTEM

9. KITCHEN
VENTILATION /
EXHAUST
Provides ventilation and/or exhaust of air within the kitchen
area
Air exhaust involves the use of kitchen hoods, fans, and
ductwork complete with insulation

10. Installed as part of the building’s fire protection system
Extract smoke and heat from the building providing enough
time for occupant evacuation
Activated using fire alarm devices
SMOKE
EXHAUST
SYSTEM

11. Staircase and lift pressurization system
Used to prevent smoke leaking passed closed doors into
stairs by injecting clean air into the stair enclosure
PRESSURIZATION
SYSTEM