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CITY OF SANTA ANA <br />Planning and Building Agency <br />Annrnwarl <br />HVAC SYSTEM HEATING AND COOLING LOADS SUMMARY <br />FOR PERMIT ISSUA <br />Project Name <br />SINGLE HOUSE ADDITION <br />Date <br />1/16/2026 <br />System Name <br />WHOLE HOUSE <br />Master ID <br />Floor Area <br />1,181 <br />ENGINEERING CHECKS <br />SYSTEM LOAD <br />Number of Systems <br />1 <br />Total Room Loads <br />Return Vented Lighting <br />Return Air Ducts <br />Return Fan <br />Ventilation <br />Supply Fan <br />Supply Air Ducts <br />TOTAL SYSTEM LOAD <br />COIL <br />CFM <br />1,688 <br />F 0 <br />COOLING <br />PEAK <br />COIL HTG. <br />PEAK <br />Heating System <br />Sensible <br />Latent <br />CFM <br />Sensible <br />Output per System <br />54.000 <br />32,027 <br />643 <br />1,151 <br />47,091 <br />Total Output Btuh <br />54,000 <br />0 <br />Output Btuh/s ft <br />45.7 <br />1,184 <br />2,447 <br />Cooling System <br />0 <br />0 <br />Output per System <br />34,000 <br />0 <br />0 <br />0 <br />0 <br />Total Output Btuh <br />34,000 <br />0 <br />643 <br />0 <br />Total Output Tons <br />2.8 <br />1,184 <br />2,447 <br />Total Output Btuh/sqft) <br />28.8 <br />Total Output s ftffon) <br />417.0 <br />1 34,395 <br />51,985 <br />Air System <br />CFM per System <br />1,200 <br />HVAC EQUIPMENT SELECTION <br />Airflow cfm <br />1,200 <br />EXISTING A/C UNIT <br />25,137 <br />8,376 <br />54,000 <br />Airflow (cfm/sgft) <br />1.02 <br />Airflow (cfm/Ton) <br />423.5 <br />Outside Air %) <br />0.0% <br />Total Adjusted System Output <br />(Adjusted for Peak Design conditions) <br />TIME OF SYSTEM PEAK <br />25,137 <br />8,376 <br />54,000 <br />F Jan 1 AM <br />Outside Air cfm/s ft <br />0.00 <br />Note: values above given at ARI conditions <br />Aug 3 PM <br />HEATING SYSTEM PSYCHROMETRICS (Airstream Temperatures at Time of Heating Peak) <br />33 IF 66 IF <br />--. oM <br />Outside Air Ar <br />0 cfm Supply Fan <br />1,200 cfm <br />66 IF <br />66 IF 108 OF <br />Heating Coil <br />0. HT t f <br />106 IF <br />ROOM r� <br />68 OF <br />COOLING SYSTEM PSYCHROMETRICS (Airstream Temperatures at Time of Cooling Peak <br />91 / 70 IF 79 / 65 OF 79 / 65 IF 59 / 58 IF <br />Outside Air <br />0 cfm Supply Fan Cooling Coil <br />1,200 cfm <br />79/65OF <br />60 / 58 IF <br />49.0% ROOM It <br />78/65OF <br />JCE <br />