A slower, cooler ferment won't damage your ale. If you have a large cardboard box, put it over the fermenter and blanket. Also, if this is a glass carboy, you might want to put some cardboard under the fermenter to cut conductive losses.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk