How Cooling Towers work In this topic, we will look at how a cooling tower operates. This will cover the basic workings of  the most common type of cooling tower “wet” or “open” which you will find on most commercial high rise and industrial sites. Why are open cooling towers the most common? Open or...

Variable refrigerant flow (VRF) systems are gaining in popularity and are used as an enhanced version of multi-split systems, featuring simultaneous heating and cooling as well as heat-recovery capabilities. Modern VRF systems provide some major advantages, such as zoning, individual temperature control, minimized ductwork, excluding the need for secondary fluids (chilled-water or hot-water distribution), and associated...

A heat exchanger is a system used to transfer heat between a source and a working fluid. Heat exchangers are used in both cooling and heating processes.[1] The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact.[2] They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural-gas processing, and sewage treatment....

What is an Air Handler? Simply put, air handlers are devices used to create conditioned air, and move that air throughout a space. Air handlers come in many shapes and sizes, but commonly take the form of a fan, filter, and coil enclosed in a large metal box. They are used to condition the air...

A packaged rooftop unit, or RTU, is a type of HVAC system that contains all the components needed to provide conditioned air in one compact unit. You typically use packaged rooftop units in light and large commercial applications. They are very popular with retail and industrial properties. A packaged rooftop unit is usually a large metal...

Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use the relatively constant temperature of the earth as the exchange medium instead of the outside air temperature. Although many parts of the country experience seasonal temperature extremes — from scorching...

There are quite a few different types of boilers out in the world. They come in all shapes, sizes, pressures, and types of fuel burned. I’m going to go over some of the more common ones, their common components, and why it all matters. First, let’s establish what a boiler is. A boiler is defined...

5 Types of Chillers in HVAC (Capacity & Efficiency) Chillers are one of the most important components in HVAC. They are the heart of the HVAC chilled water system. There are many types of chillers in HVAC and thus, what are the most common types of chillers in HVAC? The 5 common types of chillers...