Our last Manual-J post focused on envelope loads and how important it is to properly account for them in your HVAC design. Now we will turn
Before jumping into the ASHRAE 62.2 options for existing homes, make sure you’ve read and understand how to calculate the airflow requirements for new construction,
Whole-building ventilation Whole building ventilation should dilute interior pollutants by creating an air exchange within the home. This can be achieved by one or more
Now that the new 2012 NC Energy Code requires every duct system to be pressure tested, there’s a good business opportunity for folks that are
Are you still using rules of thumb to size HVAC equipment? This one size fits all approach can get you in trouble with your clients
Manual-J Heating and Cooling Load Calculations Manual-J is the name for a specific protocol (often called “Heat Load Calculation” or “Cooling Load Calculation“) used to determine
120,000 homes were “officially” evaluated by HERS raters in 2010 – a 7% increase from 2009. Believe it or not, this number represents 41% of all new homes built in 2010!
Manual-D is ACCA’s duct design method for properly sizing the airflow pathways – the ductwork – within a residential heating and cooling system. Even though
