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Old 07-11-2016, 06:28 AM   #1
City: Lake Charles
Country: USA
Join Date: Aug 2015
Posts: 17
Pilot 30 II air conditioner upgrade question

I'm thinking of replacing the factory 7000 BTU air conditioner with a 12,000 BTU unit. Will the existing 30 amp shorepower and breaker for AC be ok with this upgrade?

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Old 07-11-2016, 06:49 AM   #2
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City: Essex, Ct
Country: USA
Vessel Name: Bella
Vessel Model: Mainship Pilot 34
Join Date: Aug 2012
Posts: 1,995
A 12,000 btu air conditioner draws about 12 amps. You should be fine with a 30 amp breaker, although I suspect that the branch circuit feeding the A/C is really 15 or 20 amps. If it were really 30 amps, the A/C circuit would have to be wired with 10 gauge wire. It is probably wired with 12 or 14 gauge.


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Old 07-11-2016, 08:04 AM   #3
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City: Bristol PA
Country: USA
Join Date: Jul 2016
Posts: 137
Ck name plate or electric specs, you want to know "max circuit amps,. If it's a newer unit you may be pleasantly surprised to find the amp rating much lower then us old school HVAC types remember.
Retired HVAC, wooden boat aficionado & builder of smaller craft. NOT Josie the plumber!
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