Ditto on that. My boxes are equipped with SPDT switches so I "thought" I'd speed up the cycle. No bananas. Even after you've auto tuned the unit is going to go through it's cycles anyhow next time you use it. Think it's 3 on the Auber but haven't really paid any attention to how many on my Rex units. Takes about 20 minutes on my Lee 10# units to get up to temp just like Lee's said. With or without the PID.