Manual J Load Calculations – Don’t Make Assumptions, Design Does Matter!

The use of commercial software to calculate the heating and cooling loads greatly simplifies the process. Various software applications that provide results certified by ACCA to meet all requirements of MJ8 are available such as WrightSoft Residential.  Heating and cooling load calculations are dependent on many factors.  This blog covers building orientation, AED (Adequate Exposure … Continue Reading »

Oversized or Undersized HVAC Equipment – Neither makes for a Comfortable Home

Many contractors think a bigger system will reduce the number of complaints they get.  Or the HVAC unit may be oversized because you have added insulation or double-pane windows and the contractor just replaces your old inefficient system with a new efficient system of the same size.  What good is it to you when your … Continue Reading »

What is Manual J Heat Loss and Heat Gain?

The use of commercial software to calculate the heating and cooling loads greatly simplifies the process. Various software applications that provide results certified by ACCA to meet all requirements of MJ8 are available such as WrightSoft Residential.  Heating and cooling load calculations are dependent on the building location, indoor design conditions, orientation, and building construction.