Yea Winter rains, I would get at least a an Energy Star rated one, you can start here
Why ENERGY STAR? Choosing an ENERGY STAR dehumidifier can deliver savings on energy bills without sacrificing performance, features, and comfort, while protecting the environment by reducing greenhouse gas emissions.
www.energystar.gov
I would make sure you get an aftermarket water pump because the ones with a built in pump fail. Id get the best I could afford because over capacity reduces operating cost. I thought I bought over capacity, but when it rains for a week its hard to dehumify that. But I can keep it at 50 % when 100 % outside. You may need a whole house dehumidifier. I was able to set mine it at 40 % and for get it, it was made for a dary. Filtered the air in with HEPA then sterilized it with ozone, it mad beautiful air. I have been using low amounts of ozone for 20 years ain't dead yet.