Heating and cooling account for the largest portion of energy consumption in residential buildings. According to California Green Building Code (CalGreen) Section 4.507.2, all newly installed HVAC systems must be sized, designed, and equipped following ANSI/ACCA Manual J, Manual S, Manual D, ASHRAE handbooks, or equivalent design methods and software. Improperly designed systems—often oversized—account for more than 70% of new installations in California, leading to wasted energy and increased costs. Additionally, poorly designed systems result in reduced lifespan and compromised occupant comfort. Many cities now require Manual J, S, and D reports as part of the permit application process.

We specialize in performing Manual J Load Calculations, Manual D Duct Sizing, and Manual S Equipment Selection using the ACCA-certified software, Right-Suite Universal. Our designs provide HVAC contractors with precise guidelines to ensure properly sized systems that enhance both energy efficiency and occupant comfort.

 

Price starting from $700