What Does Throw Value Mean For Your HVAC System?

Monday, September 19th, 2016
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Your HVAC system was made for ease of operation and efficiency, but what may look like a simple procedure is actually a complex web of processes. One of the many important aspects of an HVAC system is the throw value. The following are details about the throw value of an HVAC unit and how it relates to other factors.

How throw value is affected by air currents

The throw value is determined by how well the air moves across a room from a diffuser or vent. The throw value is influenced by the speed in which the fan blows air in the unit, the size of the ductwork, and the distance from the fan. Manufacturers will provide the throw value for their HVAC systems based on standard installations.

The ceiling and diffuser can also determine throw value

Another factor in determining the throw value is the relationship of the diffuser and ceiling. Most charts used to assist in determining throw value are based on eight to ten foot tall ceilings with the diffuser set one foot below the ceiling. This placement means that adjusting the ceiling height or moving the diffuser will affect the throw value.

Air circulation is controlled by throw value

The throw value should allow the air to comfortably flow over the head of those occupying a room. The air will move horizontally and mix together, helping to regulate the temperature throughout the rest of the room. However, solid objects like support beams can interfere with air flow. In certain areas where air cannot move horizontally, the diffuser must move the air vertically.

Additional considerations about throw value

If sinking cool air or rising hot air begins to interfere with the throw value, the incomplete mixing of air can cause noticeable drafting. Professional HVAC technicians take these factors into consideration when designing and installing the right system for a home. The size of the room, location of hanging lamps, activities performed in the room, and sunlight from windows are also factors that must be considered.

If you need help choosing or installing a new HVAC system, contact the experts at Allen’s Tri-State Mechanical Inc. today. We offer heavy industrial, commercial, and residential HVAC services throughout the Texas Panhandle and Tri-State area, including Amarillo, Borger, Dumas, and Pampa. Feel free to give us a call at (806) 376-8345 or Contact Us via email for more information. You can also stop by our location at 404 S. Hayden St. in Amarillo, Texas.