What is the difference between a carpet extractor and a carpet cleaner?

What a carpet extractor is

A carpet extractor has two tanks and two systems. A pump pushes cleaning solution through jets in a wand or a fixed head into the carpet pile, and a vacuum motor immediately draws that solution back out through a slot in the same tool, taking the suspended soil with it into a separate recovery tank. Because the water goes in and comes straight back out, the carpet is left damp rather than saturated, and the soil leaves the building instead of drying back into the pile.

POLIVAC builds this class of machine in Australia across two lines. The Terminator is a portable with a 50-litre solution tank running a 220 PSI diaphragm pump. The Predator is the heavier line: the MK2 and MK3 carry a HYPRO pump rated to 2000 PSI and a 42-litre recovery tank. Solution goes down through a wand — the two-jet PPT006 or the four-jet PPR112 — and comes back up through the same head.

Why "carpet cleaner" is the ambiguous half

"Carpet cleaner" has no fixed referent. It is used for the machine, for the chemical that goes in the tank, for a small domestic upright with a water reservoir, and for the contractor who turns up to do the work. A supplier advertising carpet cleaners may be selling any of those. If a quote or a specification says "carpet cleaner", the useful next questions are all extractor questions: what pump pressure, what recovery capacity, and what tool.

Extraction is not the only carpet method

It is worth separating extraction from the alternatives, which are genuinely different processes rather than different names for the same one. Rotary shampooing agitates a foaming detergent into the pile with a brush — POLIVAC's C27RS turns a 40 cm nylon brush at 187 RPM from a 15-litre tank. Encapsulation crystallises soil into a polymer that is vacuumed away dry once it has cured. Bonnet cleaning wipes the top of the pile with an absorbent pad on a rotary. None of those flushes the pile with water and pulls it back out; only extraction does, which is why extraction is the one described as a deep or restorative clean.

When it matters

Choose extraction when soil is embedded rather than sitting on the surface, when the carpet has not been deep-cleaned in months, or when a contract obliges you to periodically restore rather than merely maintain. It is the method that physically removes soil from the building, so it is what a restorative clean means in practice — and it is the method that recovers a carpet that the interim methods are no longer keeping on top of.

The common mistake is treating extraction as routine work. It wets the carpet, and carpet that stays wet too long risks odour, wicking of old stains back up to the tip of the pile as the water evaporates, and in bad cases delamination of the backing. So extraction is a periodic deep clean scheduled around drying time and reoccupancy, with dry vacuuming, spot work and an interim method such as encapsulation carrying the day-to-day load. Plan the drying, not just the cleaning.

The second mistake is under-vacuuming beforehand. Dry soil that could have been vacuumed out in minutes becomes mud the moment it is wet, and the extractor then has to remove it the hard way — slower, wetter and less completely. The third is matching the machine to price rather than to area: a portable with a 20-litre recovery tank is emptied constantly on a large floor, and on a big site that emptying is most of the labour.