My buddy Blake Reid just posted this. Well worth a read. It's short.terrawatthome.com/news/2017/03/13/you-need-bigly-dehumidifier-pt-1
For those of us in green grass climates, I'm becoming a bigger and bigger fan of these things. We recommend them for EVERY project. That doesn't mean they get installed. I particularly like ventilating dehumidifiers because they bring in outside air and pressurize a house a touch, which can tend to push contaminants outdoors. They also tackle dehumidification when there isn't cooling load, which is about 6 months/year here in Cleveland. They can allow much higher AC set points, pushing 80 degrees.
Blake has an XT155 in his basement. I just bought one too, I'll install it in the next few weeks. Four of my clients have them. Supplemental dehumidification was a subject at Summer Camp. (Ken Gehring of Thermastor spoke there this year, and was kind enough to donate a little dehu for the Habitat project we helped with.)
I'm coming out hard for these things. If you aren't recommending them for projects and moisture is an issue in your climate, you might consider it. That way, if there is a moisture problem later and the client doesn't do it, you're covered. Thoughts?