Heating, ventilation and air conditioning is the meaning of the acronym of HVAC. If you’re here because your curious about what HVAC is about or you’re taking a short course to get your certification; here is a simplified version of HVAC to give you a little peek on the basics of the topic. It is not a complete list but it will help you understand better if HVAC is the right fit for you.  

The HVAC industry is a thriving business as more and more households have and HVAC unit. If you are around Canada there are many service providers of HVAC Newmarket that you should check out.  


Understand the Laws of THERMODYNAMICS 

It states that:  

  • Heat is a form of energy  
  • Heat energy will move from place of high intensity to a place with lower intensity  

It will be easier for you if you understand the basic of thermodynamics. To make you understand it better heat will move towards the much cooler place. This phenomenon will just happen on its own.  

What is Latent Heat and Sensible Heat? 

Latent Heat measures the heat energy quantity of a substance, while Sensible Heat is the energy you measure in Celsius, Fahrenheit and Kelvin; it is how hot something is.   

In the HVAC latent heat energy will make the substance warmer if it is absorbs. If it is released then the substances becomes cooler.   

The relationship between pressure and temperature  

Temperature and pressure follow each other in a sealed system. If one rises the other follows or if one falls the other would also fall. This is crucial point in HVAC so be sure to understand their relationship. This will allow the technician to be able to tell what is happening inside the system with the use of a system gauge. 


Compressors from its root word compress is a pump in which is the cause of the coolant to circulate around. Compressors have different types it could be rotary type, screw type reciprocating type or centrifugal type.   


This is a coil that cools the air in the unit. It absorbs latent heat thus cooling the air in which it absorb the heat from. To make the air flow it has a blower so it will not stay put in that area.   


This is usually the exterior of an air conditioning unit. Meaning hot air will be blowing out of it.   


The thermostat is basically the part of the unit in which you can turn the temperature high or low thus cooling or heating the space.

These are some of the basic concepts that any HVAC technician should have a proper grasps on. It is important that you understand each very well so you’ll be able to troubleshoot a system properly and efficiently.  

It is still much better if you have proper training and certification before you try playing with your HVAC system. This is so you can avoid accidents upon yourself and to others. Always remember safety first.