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​​Heat-Load USA

ACCA Manual J load calculation - Manual S - Manual J HVAC - Manual J Calculation Service - Heat Load Calculation - Residential Load Calculation - Manual J Services - What is a Manual J - manual j hvac residential load calculation
- load calculation - Manual N - Commercial load calculation = HVAC ENGINEERS - HVAC CONSULTANTS
- ACCA Manual N Commercial load calculation - Manual D - Manual D calculation - Manual J & D Calculations

We provide Manual J services nationwide.   We also provide Manual D - duct layout and commercial load calulations known as Manual N services nationwide. 

We have been providing these services nationwide 10 years now. Wheather its a small home by the shore, an addition, a new 4,000 sq ft home with two systems or even a 10,000 sq ft mansion - we are pleased to be of service to you. 

Our picing is starts at $125 and our turnaround is 3 days. We also offer NEXT-Day service. We serve contractors, architects, builders and savy homeowners.  

Call us today to get started:  973-544-6800

We are ready to be of service to you  

Why Chose Heat Load USA?

Manual J load report prepared for you

Our reports are ACCA Manual J 8th Edition Certified

Overnight service available

We Serve ALL states including TX, MD, CO, AZ , NJ, NY, MA, VA, NC, GA & SC.

​Call Us Now: 973-544-6800  or


​​​We serve your area - Since 2010, with literally thousands of manual J reports created all over the country we can serve you.  Weather its a small home, or a mansion with many systems, we are ready to serve you.

We have your back - We will take good care of you.  If you are a contractor, builder or design professional, we know you have clients that are very demanding. The way we see it, our job is to help you meet your commitments. 

Certified by ACCA ACCA created Manual J and S.  ACCA sets the standards.  Only use a certified professional to do your work. ACCA's training provides an HVAC Design certificate that covers Manual J, D & S.  This certification needs to be renewed every 5-years. See ours below.  Make sure the person who does your load calculations is certified to do load calculation.  

Competency  All of our work is guaranteed to pass local township requirements, all over the US. Weather you are in Texas, Colorado, Arizona, Virginia Florida or California.  We serve all of the USA.  You simply provide us the necessary home plans and equipment you want to install.  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. 

Quick Service  We offer 3-day turnaround.  Next Day Service is also available

To Get Started Call or TEXT us:  973-544-6800


What Do We Need To In Order to Prepare A Manual J Report For You? 

  • Floor Plan for each floor (including basement if applicable) 
  • Address of property 
  • Known insulation r-value of walls
  • Known insulation r-value of walls
  • Location of equipment and ductwork  - Basement, Conditioned space, Attic Garage etc. 
  • If more then one system, we need to know the coverage area and location of each HVAC system

​​What is a Manual J? 

A Manual J is the exercise of calculating the size of the heating and cooling equipment in more details then just sq. ft.  It takes into account how tight a home is, insulation  of walls, floors, attic, window sizes and quantity, sun light and much more.  Manual J is for residential properties. Manual N is for commerical properties. 

Today's advanced sophisticated software can accurately size the heating and cooling systems so that they are right-sized for a home.  

We serve contractors, builders, architects, engineers and homeowners and we can have your manual J done in as little as one day.   

For Infomation on Manual D  and duct layout services click here.

Call us now now begin your order:  973-544-6800