Back heat woth RBI racks?

I know on the site is says its best for rooms 75 and up but wondered if anyone on here uses them in rooms that are 70 degrees do they still work well?

Mine still work pretty well at 70 degrees, although the room is usually around 78. The cool side may drop a couple of degrees, but the warm side stays up pretty well. Temps have been extremely consistant using a Helix. I love mine, and Rich is top notch to deal with.

Yeah I know all I hear are good things about him. Plan to replace all my melamine ones with rbis. Was going to go with boaphile but cant wait 3 to 4 weeks.