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Manual J Calculations for Residential house 1018 sq. ft. American Standard unit

Please help. My house is one story 1941, two bedroom, one bath. Exterior is stuccoand plaster. Old double hung windows, single pane, old roll insulation in attic. My house is in Whittier, California. I'm thinking of American Standard split unit 14 seer, 80% furnance, single stage. What do you think?

Thank you,


Posted by balance7477 on

  • balance7477 Aug 06, 2008

    Thanks! Just to clarify, my one story stucco, two bedroom, one bath Whittier,CA house is 1,018 sq. ft. It has 13 old double hung windows-single pane, old roll insulation in attic only. The Southern Edison referred license contractor suggest strongly the American Standard split 14 seer, 80% furnance single stage, remove six existing supplies duct work,return and replace all six supplies and return with R-6 duct work, new registers and grill for return. Also he will remove existing package unit on roof and patch roof with plywood and metal, and pull permit, total labor and material is $8,250.00. He says 15 or 16 seer with the 90% variable is a waste of money! The American web reccommends 15 or 16 seer, 90% variable speed furnance.



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Without actually doing a load calc it would just be an educated guess.Good choice in equipment though.

Posted on Aug 06, 2008

  • Anonymous Aug 08, 2008

    of course am stan is going to suggest the higher end equipment.It is better.Is it so much better to justify the added expense up front?That's debateable.Good luck.



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