When planning for the construction of a new home or office, the performance of a Manual J Load Calculation should be the first consideration, but unfortunately it’s all-too-often completely overlooked. A load calculation is the key to countless options in residential and light commercial construction that can lead directly to incredible savings both up-front and long-term. In addition, performing a load calculation in the critical “pre-planning” stage can offer insight into selecting construction materials, HVAC systems, and other products that result in a better-built, stronger, and more comfortable indoor living environment. The question we’re most often asked here at High Tech Homes Construction is, “Why don’t more people get a Manual J Load Calculation if it really is so affordable and beneficial?”

The answer is simple, and staggering, when you consider today’s sky-rocketing energy prices – “Ignorance.” Today’s consumers - and even those in the construction industry overall – oftentimes aren’t familiar with the Manual J Load Calculation, where to go to have one performed, or the numerous advantages found in the data it provides.

For the purpose of educating our site visitors, we’d like to share a basic description of the Manual J 8th Edition Load Calculation here:

According to Air Conditioning Contractors of America (ACCA), the Eighth Edition of Manual J (MJ8 – ACCA/ANSI) was adopted by the American National Standards Institute (ANSI) as the American standard for residential heating and cooling load calculations.

The Manual J 8th Edition load calculation is used to determine the home’s peak heating and cooling requirements by gathering and processing data specific to the subject residential structure being evaluated. Room size is one example of the data needed to ensure indoor comfort and airflow.

Once the home’s peak heating and cooling loads have been identified, the Manual J load calculation establishes the home’s heating, ventilation & air conditioning (HVAC) system size requirements.

Today’s technology offers many energy-efficient systems to meet the home’s HVAC needs. The Manual J load calculation assists in the selection process by ensuring that the desired system will meet the home’s HVAC needs. When combined with other approved calculations, it can even project the system’s estimated operating costs (both current and future), as well as payback period.

While the Manual J load calculation is a long-established standard for determining a home’s peak heating and cooling requirements, care must be taken to verify that data was accurately obtained from a qualified source prior to selecting and purchasing the home’s HVAC system.

An improperly sized HVAC system can lead to a whole host of problematic issues after installation. For example, run cycles that are too long or too short can impact dehumidification, loss of operating efficiency and unnecessary wear and tear on the system’s components, which may shorten the overall lifespan of the system.

Performing a Manual J Load Calculation may well be the most significant investment you make in your home.

At a cost of approximately 15¢ per square foot of the home’s total square footage (including basement whether finished or unfinished), a Manual J Load Calculation should be at the top of the “To-Do List” when planning the construction of all new homes.

For more information on how to secure a Manual J Load Calculation for your new home project please fill out the form below … we’re eager to help guide you to tremendous savings!