residential hvac load calculation software

Louis in September 2015.Ĭool Calc uses advanced geospatial algorithms to process publicly-available Lidar data and Ortho imagery, allowing it to automatically detect a building’s footprint, wall area, ceiling area, floor area and exposures. It is fully compliant with ANSI/ACCA 8th Edition Version 2 and was featured at the ComfortTech trade show in St. Launched earlier this year, Cool Calc is one of only seven products to earn the coveted ' Powered by ACCA Manual J' approval for full residential load calculation from the Air Conditioning Contractors of America, and is the only ACCA-approved Manual J calculator available free online. The tool is the result of two years of development by a team at DCNE. The Cool Calc Manual J tool enables contractors to leverage the power of big data to measure a home’s HVAC needs before making a house call. Understandably, properly performing a Manual J calculation can take some time.Ī new tool developed by Distributor Corporation of New England (DCNE) promises to streamline the process of calculating home energy performance. ACCA's Manual J even calculates the amount of heat and humidity that each occupant of the house will add to the interior of the home. In addition, an HVAC load calculation also takes into consideration other factors such as the home's geographic location, orientation to the sun, envelope tightness, duct leakage, lights and appliances. Through a complex series of calculations and inputs, the HVAC designer is able to analyze all aspects of the thermal characteristics of every wall, floor, ceiling, door and window.

A new online tool lets contracts complete the complex task in about a minute.īy using Manual J methodology, HVAC designers are able to accurately determine the total amount of heat that is lost through the exterior of a home during the cooler months, and the total amount of heat that is gained through the exterior of a home during the warmer months. It's one of the tools published by the Air Conditioning Contractors of America to help HVAC contractors design a heating and air conditioning system.

HVAC contractors use a Manual J calculation to determine the heating and cooling loads of a home or building, and recommend the capacity of HVAC equipment needed.

Residential hvac load calculation software