Tag Archives: Design Calculations

Residential HVAC – Manual J Design Calculations

In the past, most HVAC contractors did very little actual design work when “designing” a heating and air conditioning system. Manual J requirements are sweeping across our country. Soon all building authorities will require that a proper Manual J and Manual D duct design be submitted before a building permit will be issued. Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , | Leave a comment

HVAC Design Calculations – For the Homeowner, Builder, Architect, and the Handy Do-It-Yourselfer

HVAC design calculations, Manual J heat loss/gain calculation, Manual D duct designs, and Manual S equipment selection, are the ACCA approved methods for properly designing heating and/or air conditioning and ventilation systems (HVAC). These methods are rapidly sweeping across our country as the preferred methods to determine HVAC equipment and duct system sizing, as well as other comfort systems, such as radiant floor heating. Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , , , , | Leave a comment