For example, in the early stages of the design process, when the owner, architect, and engineer are meeting to determine the best course of design to pursue, it is important to understand the impact of the HVAC system on the overall design especially as it relates to space requirements. However, there are times when this accuracy and time/effort investment are not fiscally reasonable. This will determine how the building will function in both heating and cooling environments and at different times of the day, week, month, or year. It is imperative to use the most realistic and accurate computer model in designing the building’s HVAC systems. A design engineer who doesn’t spend the time manipulating wall construction, roof construction, occupancies, equipment loads, and lighting configurations would not be providing the building owner with professional service. These programs are often necessary when it comes time to perform the actual equipment sizing, selection, and specification. There are many HVAC Load Calculations Worksheets on the market that are highly specialized, require an extreme amount of data input, produce large quantities of output, are very accurate in terms of HVAC loads, and are usually quite expensive. The output is a one-page form showing all the pertinent data and design conditions needed to accurately select the proper heating, ventilating, and air-conditioning equipment to satisfy the space conditions. The simplicity and unique compactness allows the design engineer to input, change, and manipulate multiple HVAC load variations on the spot, with the output immediately available on screen.

HVAC Load Calculations Worksheet specifically accelerates initial design decisions and system selection.

Commercial load calculation worksheet