Load Calculation Data and Procedures
ASHRAE Technical Committee 4.1

Meeting Documents

Download documents from previous committee meetings below according to the appropriate society year. ASHRAE's society year begins on July 1 and ends June 30.

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Other Publications

Additional documents produced by the TC may be available for direct download or for purchase through the ASHRAE Bookstore, as noted below.


ASHRAE members have free access to research project final reports. Non-ASHRAE members can purchase research reports for $30 per article from the ASHRAE Bookstore found at this link.

TC 4.2 Climatic Information  Co-sponsor, TC 4.1 Load Calculation Data and Procedures
The climatic design conditions in the HOF Chapter 14 are fundamental for the sizing and design of building energy systems to allow for optimal energy efficiency measures and ensure that the design conditions are related to the energy system capacity to meet the climatic loads in a probabilistic sense. Regular updating of the climatic conditions is critical in this respect for many practical reasons and to show due diligence in a world of changing climate.

Other completed research Projects
1482-RP: Update to Measurements of Office Equipment Heat Gain Data
1453-RP: Updating the ASHRAE Climatic Data for Design and Standards (co-sponsor to TC 4.2)
1416-RP: Development of Internal Surface Convection Correlations for Energy and Load Calculation Methods (co-sponsor to TC 4.7)
1363-RP: Generation of Hourly Design Day Weather Data (co-sponsor to TC 4.2)
1362-RP: Revised Heat Gain and Capture and Containment Exhaust Rates from Typical Commercial Cooling Appliances (co-sponsor to TC 5.10)
1343-RP: Method of Testing and Data Collection for Energy Characteristics of Healthcare Equipment (co-sponsor to TC 9.6)
1326-RP: Application Manual for Non-Residential Load Calculations
1311-RP: Improving Load Calculations for Fenestration with Shading Devices


Presentations from TC sponsored seminars can be downloaded here, if available.