I?m going to buy a house next month with a separate garage that I w ant to make into a workshop and music practice area. The building inspecti ons were yesterday and there?s no insulation in the garage attic so the guy said the walls probably don?t have any either. He said it would be an easy matter to blow foam in the attic but holes would have to be cut in the walls to insulate them. I?m considering doing both. Do you agree this should be done? What would be a typical cost for that?
I measured the dimensions of the inside of the garage and it is 4400 cu fee t. This Sunday, the wether forecast is for clear skies and 95 degrees. If I use that for the load, how many BTUs of cooling are needed to make it co mfortable in a reasonable amount of time inside the garage? Is that how I should size the system?
The garage has power but not 220V at this time. Will I need that?
The cooling season here in New Orleans is around 9 months. Over 20 years, will the extra cost of a compressor and air handler pay for itself in reduc ed operating costs compared to a window unit? What would you do if you wan ted to make a garage comfortable year round?