Good question. I think one thing that often gets missed is that “too much heat” is not just about the temperature itself. It is really about heat + fiber type + backing + chemistry + dwell time.

A synthetic commercial carpet may tolerate a lot more than a wool carpet or a stain-resistant residential carpet. And sometimes the real problem is not the heat alone, but what it does when combined with strong chemistry, overwetting, or slow drying.

In my opinion, the safer way to think about it is:

• Identify the fiber first
• Use only as much heat as needed to improve cleaning
• Keep the wand moving
• Avoid over-application and long dwell with high heat
• Dry aggressively
• Test in an inconspicuous area if there is any doubt

I have seen more issues from the combination of heat, moisture, and chemistry than from heat by itself. So for me the question is less “What number is too much?” and more “What am I cleaning, and how much total abuse can this carpet system handle?”

Back a few years ago Dupont stated truckmounts that cleaned carpeting with Teflon protection at temperatures above 160�F would crack, melt, and remove the finish deaming the warranty useless.

One enterprising truckmount owner who had a propane fired hot hot truckmount attempted to make the carpet fibers 160�F but could not come anywhere close.

200 at the machine should not be a problem unless it's wool or olefin.

My Cleanco runs at about 190-200 without my kero burner,and I very rarely turn it down unless doing a wool area rug or like I mentioned an olefin carpet.

so steam that pile.

STANLEY BELIEVES IS OWN LIES, HE READS ALL THOSE BABY BOOKS ABOUT THE LITTLE ENGINE THAT COULD, 350F.........HA HAHAHA HA ,,,,,,,WHERE DID YOU GET THAT DIAL FROM A PRESSURE COOKER..........MY SONS CAR SAYS SPIDER ON THE BACK OF IT......BUT IT CAN'T MAKE A WEB

                        NIGHTRIDER