ASHRAE has agreed to resell Carmel Software's HVAC load calculation software: Residential 5.0 and Loadsoft 6.0. The Residential 5.0 software performs residential and light-commercial HVAC load calculation analysis based upon the ASHRAE 2001 Fundamentals. The Loadsoft 6.0 software performs commercial HVAC load calculation analysis based upon the RTS (radiant-time series method) which is also published in the ASHRAE 2005 Fundamentals.