I use a Rotovac Enduro 2500H, heated dual stage with a 360i. Bought one of the Rotovac start-up packages before I started reading through here. Always under the impression more is better, I've never tried it without using the heaters. Saturday I went to a trailer that was the most disgusting carpet/place I've ever seen. I gagged the whole time while pre vacuuming. They had a little dog that never pooped outside. I didn't smell urine, so maybe it peed outside. The poor lady's parents were very old had virtually given up on life, and she wanted to clean their place while they were gone. Carpet was the original carpet that came in the trailer in 1973, looked like it was quality carpet back then. Power was sketchy in the trailer and the water was really hot, so I tried it without the heater cord plugged in. Been using pro10k with groutmaster previously with ok results. I just received an order from TMF Store, I mixed pro10k, groutmaster, pure 02 and 4oz of PetOut in the hydroforce . I don't know if using PetOut like that had any benefit in the prespray, but I knew it wasn't going to hurt. I didn't have much hope from the start. Carpets came out amazing. I've struggled in the past with traffic areas, they came out awesome. I noticed I had a ton more suction not using the heaters. So what made the difference? The extra suction? The o2? It was the first time I've boosted with o2. Hopefully tomorrow I'm buying my first truck mount and will use this as a back up. Starting to wish I had bought the dual 3-stage with no heat instead. In situations where I don't have hot water, I do have bucket heaters. How hot of water can these pumps handle?

Thanks guys!