How do I figure the size of an air conditioner and a gas furnace for a mobile home?
I am having a new outside air conditioner and a new 2 stage gas furnace put in. My mobile home is from about 1977. It has 1440 sq. ft., floor (out flow vents) & ceiling in flow vents. The present duct work is inaccessible. There is an old 4 ton elec. A/C unit and an old - maybe 100,00 BTU gas furnace. Neither one is efficient. My place is probably not very air tight Don't know about the insulation. I think I live in zone 3C (about 2+ hours N. of San Francisco on Hwy 101; About 60 miles inland from the coast-Ukiah.) Should I replace the A/C with a 13 SEER 4 ton model and a 2 stage, 95%, variable speed 88,000 BTU gas furnace? Do I need a 4 Ton A/C unit? What about the furnace?
Posted Jul 22, 2014 10:35 PM ET
Edited Jul 23, 2014 4:38 AM ET
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