What does HVAC/R mean?
This is a question that I get asked a lot, so I thought that I would write a blog post on the subject to explain it to you.
Five Letters and Four Concepts
HVAC/R stands for Heating, Ventilation, Air Conditioning, and Refrigeration.
There are five letters and four concepts, and all four of these concepts revolve around the subject of controlling temperature.
Ultimately, all that a HVAC/R mechanic is concerned with is to control the temperature within a given space to produce a desired effect.
What the HVAC/R trade is attempting to accomplish
The effect may be to keep a residence at a comfortable 19 degrees Celsius during a cold winter day, or keeping fresh produce at 2 degrees Celsius during a summer heat wave. The equipment that is used to achieve these effects can vary widely, but the general concepts are the same across all of the HVAC/R disciplines.
We try to accomplish a consistent temperature within a given space. That space might be a shopping mall, your home, or a walk in freezer in a restaurant.
There are a lot of variables that have to be taken into account for HVAC equipment to operate well.
For example, when we install an A/C system we perform a heat load calculation. This test allows us to quantify the maximum amount of heat that the building will be exposed to. Without this calculation, we wouldn’t know the correct size of air conditioner to install in a particular building.
Now You Know
So now you know what HVAC/R stands for. Feel free to demonstrate your new knowledge at your next dinner party and impress all of your guests!
If you would like to read some more articles, here is the 404 HVAC/R Blog link.
Here is the Wikipedia link that provides a lot more information, if you’re so inclined.
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Until next time, stay warm (or cool).