Cigar Humidification

Cigar Q&A: Does a Cigar Humidor Have to be Airtight?

Q. Does a wooden cigar humidor have to be airtight? I put a flashlight inside mine, and can see the light rays coming out of the gaps along the lid. Is this OK, or does the humidor have to be tight as a submarine hatch?
– Nick V. (U.S Navy)

A. Technically speaking, yes, cigar humidors should be as air-tight as physically possible. When I came into the cigar business, someone told me about a “the dollar test;” if you couldn’t slip the edge of a crisp dollar bill in-between the lid and the base, the humidor had a good seal.

Another method is to open the humidor and place the dollar perpendicular to the edge (as you would feed it into a vending machine) so that half of the bill is on the inside and the other half out. Close the lid, then try to pull the bill out of the humidor. If the humidor has a good seal it should be very difficult to pull the dollar out short of tearing it. Moreover, this test should be done on all four sides of the lid.

In your case, the bigger question should be: despite the gaps, is the humidor keeping the cigars fresh? If your box is within the “normal” range 65-75 degrees x 65-70% relative humidity (RH), then I wouldn’t worry too much about the gaps. If the gaps are exceedingly wide, they will cause problematic variances in your temp & RH. Make sure you have a good digital hygrometer/thermometer to monitor the conditions in the humidor, too.

Finally, if the humidor is brand new and the seal is noticeably out of alignment, return it.

Gary Korb

Gary Korb

Executive Editor

Gary Korb has been writing and editing content for since its debut in 2008. An avid cigar smoker for over 30 years, during the past 12 years he has worked on the marketing side of the premium cigar business as a Sr. Copywriter, blogger, and cigar reviewer. A graduate of the Newhouse School of Public Communications at Syracuse University, prior to his career in the cigar business, Gary worked in the music and video industry as a marketer and a publicist.

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