Useful Links:


NJ Clean Energy Program:

Energy Star:

Energy Star on Heating and Cooling:

Wrightsoft Manual J Software:


Comfort Institute:

Hart and Cooley:

Home Depot HVAC:

Building Performance Institute:

AHRI Directory:

Goodman HVAC:

Amana HVAC:

American Standard HVAC:

ACCA Sample Manual J:

Call Us:  973-544-6800

Awards & Recognition

2012, 2013, 2014, 2015 & 2016 Energy Star EPA Century Award Winner

We are blushing. For 5 years in a row now, we have been award the EPA Century Award from Energy Star. 


For many years now, we have maintained an A+ rating on BBB.  We strive to provide excellent customer service all around!

About Us - Manual J Calculation + More

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

Company Profile

Building Scienes LLC


Founded: 2008

Owner: Rashid Burney


Areas of expertise:  Business, Construction, HVAC, Heat Load 

Heat Load USA was created to serve HVAC contractors, architects, engineers all over the USA. 

 We have on staff a civil engineer, a mechanical engineer and a NJ licensed HVAC master contractor.  This by the way is what we do for a living in NJ.  We are a home performance contractor, doing energy audits, HVAC, insulation and more. 

ACCA Manual D

HVAC Load Calculation

Manual D Calculation

Manual D Calculation

Manual J Calculation‚Äč