if you are using a water bath and swapping ice bottles to maintain temps, you should be okay and the ambient isn't such an issue, that's what I used to do prior to ferm chamber and found it did a really nice job maintaining a consistent temp.FYI typed that on my phone. Meant to say 70. That's temp of fermentation. If your room is at, say, 64 your ambient is "OK". Just remember to add 6-8 degrees to your ambient for the temp of fermentation - which generates its own heat. If you keep your house much warmer than 64 it's a bit too warm for most ale yeasts.6-8 degrees? Wow, wasn't aware it was that much higher. I currently use a water bath which keeps it pretty tight. I'll check the surrounding water and use a UV gun to check the glass. Counting down the days until I get a wine cooler.