Commercial Projects -

Most states of the US now require Manual N cooling and heating load calculations be performed to properly calculate heating and cooling loads for new and renovated small commercial buildings. (See Section 403.6 of 2009 IECC and Section 1401.3 of 2009 IRC).

We offer extremely affordable rates for the preparation of Manual N load calculation reports for contractors, builders and architects and we can often have your report completed in as soon as one day.

For 24 years, with literally hundreds of manual N reports created all over the country, we can serve you.

If you are a contractor, builder, or design professional, we know you have clients that are very demanding.

Our job is to help you meet your commitments.

We are Certified by ACCA, which created Manual N, and sets the standards.

Only use a certified professional to do your work.

All of our work is guaranteed to pass local township requirements, all over the US.

We serve all of the USA. You simply provide us with the necessary home plans and equipment you want to install.

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What is Manual N?

Manual N: Commercial Load Calculation

Manual N, “Commercial Load Calculation,” is one of the most widely accepted resources for performing load calculations on commercial facilities. Published by the Air Conditioning Contractors of America (ACCA), a leading professional organization in the HVAC industry, this authoritative manual focuses on commercial buildings up to three stories in height. It incorporates the latest advancements and developments, including new materials, functional system requirements, and manufacturing methods. Manual N provides comprehensive background information and detailed technical procedures necessary for conducting effective load calculations. With this manual, HVAC professionals can perform both basic and exhaustive computer-based load calculations, ensuring accuracy and efficiency in their work.

What isa COMcheck

COMcheck is a software program developed by the U.S. Department of Energy (DOE) to help ensure that new commercial building (or tenant fit-outs in existing buildings meet the energy efficiency requirements of the International Energy Conservation Code (IECC). COMcheck may be acceptable in lieu of a manual N report, however, this is determined by the local county or jurisdiction, rather than statewide.

What information is needed to complete the calculations?

To Prepare Your Manual N Without Delays, We Will Need the Following Information:

Floor Plan for each floor (including basement if applicable)
Size of Windows on each wall, on each floor
Size of doors on each wall, on each floor
Address of property
Exterior Wall material, brick, block, siding, etc.
Roof color, and material, shingle asphalt, metal, shake, etc.
Location of equipment and ductwork – Basement, Conditioned space
If more then one system, we need to know the coverage area and/or location of each HVAC system. If this is unknown, we can help you with this.

Please note some townships may have licensing requirements that are beyond the scope of our work which is limited to ACCA-compliant equipment and duct sizing, and equipment selection.

Feel free to call us or email us with any questions you may have about our services.

We also offer Manual J reports for residential projects.