I know you said you checked the coils and they're clean. But since you have a new rig, have you had the air conditioning checked to be sure it's operating at optimum efficiency? Can you detect any duct leakage? Do you have a voltmeter or energy management system to be sure you're getting adequate voltage? We used to keep a 37' fifth wheel cool with one AC (15,000 btu). A couple of really hot days (100+) made it work pretty hard though.
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Dave & Jo Ann
2008 HitchHiker Champagne 35LKRSB | 2011 F350 Lariat 6.7PSD | Many great memories!
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