By utilizing the Manual J Load Calculation you set yourself apart from your competition by guaranteeing your client will have the industry standard in home heating and cooling efficiency, thus keeping their energy costs to a minimum. It is very important to size the heating and cooling unit appropriately. For the remainder of the country, the minimum standard is 14. The higher the SEER rating, the more efficiently your heat pump system can produce warm and cold air. For heat pumps, you should consider a model with a 15 SEER rating or higher. On the other hand, energy-star rated heat pumps feature SEER ratings that vary from 18 to 27.5. Right-J ® is the industry leading residential load calculation software since 1986. It enables designers of all skill levels to perform ACCA and ANSI approved Manual J calculations quickly and with ease. Right-J ® also includes Manual S, with expanded data from some manufacturers, which automates the equipment selection process. ACCA* Manual J Load Calculation ACCA* Manual S Equipment Selection ACCA* Manual D Duct Design Due to the ever growing presence of new building materials, advanced insulation systems, and efficient ventilation systems, it's impossible to use rule-of-thumb sizing methods and consistently achieve accurate and energy saving results. value however, the important element to verify is that the cooling equipment does not exceed the capacity limitations. The Latent capacity was determined by subtracting the Sensible capacity from the Total capacity (29,300 - 21,400 = 7,900). Note the air flow required to deliver the capacities stated (1,000 CFM). • Abridged version uses 4 default duct classes • Full Manual J requires calculation of duct areas, leakage, and resulting heat transfer factors • 28 tables of duct layouts -important to be familiar to select correct system! • Each table has 4-steps 1. Baseline heat loss/gain based on default surface area 2. Adjustment multipliers for insulation 3. What is "Manual J" residential load calculation? Developed by the Air Conditioning Contractors of America (ACCA), a Manual J‌ residential load calculation determines how much heating or cooling capacity your home needs, and the right equipment to do it. The calculation is based on an array of factors: Ductwork. Windows. The original contractor told us that you do not include the basement in the calculations so we are trying to find something definitive to prove him otherwise. (Even though the duct work is also in the basement and there is a second thermostat down there.) There is one wall in the house that is 2x6 (South). When it comes to Manual J, our load calculations are fast and accurate! Get a Quote Everyone at ProCalcs has always been very responsive and streamlined in their questions in order to provide our company what we need depending on the type of project. They have also been a key player in expediting the process when we are in a pinch! manual-j-load-calculation . September 22, 2020 / 0 Comments / by mjAdmin. Share this entry. Share on Facebook; Share on Twitter; Why is having a properly sized Heating & Air Conditioning system important? 800-810-3280 itsupport@webrepsusa.com WebREPS, LLC 1880 82nd Avenue - Suite 203 Vero Beach, FL 32966 It is vital to understand that Manual J® is the foundation. It is the first step in diagnosing a potential issue resulting from client complaints with comfort and system performance