ACC Building Performance
Manual J load calculations, Manual S equipment selection, and Manual D duct system design for contractors, builders, and homeowners who understand that equipment sizing is not a guess.
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The Problem
In residential construction across the Gulf South, HVAC systems are routinely sized by rule of thumb: square footage, gut feel, or whatever the last contractor used on a similar house. It is an industry-wide habit that produces systems that are almost always too large.
An oversized HVAC system short-cycles. It cools the space quickly but never runs long enough to manage humidity. The result is a home that feels cold but clammy, and over time develops the chronic moisture accumulation that creates mold and air quality problems.
Proper HVAC design requires a Manual J load calculation: a room-by-room analysis of your home's heat gain and heat loss based on its actual construction, orientation, glazing, insulation levels, and internal loads.
Design Services
Our team performs detailed load calculations according to ACCA Manual J standards to accurately determine the heating and cooling requirements for each space in your building. By meticulously assessing factors such as climate, insulation, occupancy, and solar gain, we ensure your HVAC system is appropriately sized to provide optimal comfort and efficiency.
Building upon the results of the load calculations, we select the right HVAC equipment and components in accordance with ACCA Manual S guidelines. Our expertise in equipment selection allows us to choose systems that are perfectly matched to your building's requirements, maximizing performance and energy efficiency.
We design ductwork systems that are engineered to deliver conditioned air efficiently and evenly throughout your building, minimizing energy waste and ensuring consistent comfort. Our ductwork designs adhere to ACCA Manual D standards, guaranteeing that airflow is optimized for each space and that pressure losses are minimized.
We verify building and duct system performance with blower door and duct leakage testing, helping identify air leakage, pressure problems, and installation issues that affect comfort, efficiency, durability, and indoor air quality.
Who This Serves
Project Example
Sprawling home with three systems, hard pipe trunk lines with short flexible drops to each room, and integrated dehumidification. ERV is coming later.
Project Example
Fairly challenging two-story home with all hard duct piping, integrated ventilating dehumidification, and MERV16 filtration.
Project Example
A basic system designed for a local HVAC contractor.
Next Step
In the Gulf South, where humidity is the enemy and the margin for mechanical error is small, equipment sizing matters. A correctly designed system manages moisture, controls air quality, and keeps your family healthy.
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