If you have MaxxAir covers on your vents, just leaving the vents open is sufficient enough to keep the RV from suffocating. Running the fans 24 X 7 will most likely shorten its life. If you have jalousie windows, keeping one or two open will also help and not let any rain in and bugs if they are screened. Cooling the coach down before a trip I usually run the roof AC's for several hours prior. During winter storage, I also leave the roof vents open.
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Tom and Lisa
Pennsylvania
2015 Challenger 37TB
2015 Ford Taurus toad
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