Both get carpet clean. They do very different things to the floor underneath, and the
difference is worth understanding before you book either one.
First, a naming problem. Steam cleaning is not steam. It is the
common name for hot water extraction: hot water is sprayed into the carpet and then
vacuumed back out.
The appeal is intuitive. Hot water sounds like it must be sanitising, and people like
the idea of heat killing bacteria in the fiber. But a cleaning product that genuinely
works kills the bacteria on its own. A good deal of the industry leans on hot water
to make up for what its product is not doing.
Low moisture liquid dry cleaning takes the other route. A solution strips and
encapsulates the soil, which is then lifted out using very little water.
Side by side
What we use for most jobs
Low Moisture Liquid Dry Cleaning
Dry again in hours, not days
Backing and padding stay dry, so neither breaks down
Very low risk of stains wicking back up while drying
No residue left to pull soil straight back in
Room back in normal use the same day, with pets and children in it
Also called steam cleaning
Hot Water Extraction
Genuinely flushes the backing and the padding
The correct choice for pet urine or a spill that soaked through
Carpet typically stays damp for a day or more
Oversaturation risk, which breaks down backing and padding over time
Higher chance of a stain wicking back to the surface as it dries
The part that costs people their carpet
Oversaturation is the biggest complaint in professional carpet cleaning, and the most
expensive one. One customer described walking across her carpet after a professional
cleaning and watching water come up between her toes.
When carpet is soaked like that, the backing starts breaking down. So does the
padding beneath it. That erases years from the usable life of a floor somebody paid
thousands of dollars for.
Which produces a genuinely damaging piece of folk wisdom. People put off cleaning for
years, telling themselves they are protecting the carpet, and by the time they call,
the grit has already sanded permanent traffic lanes into the fiber. They avoided one
risk and walked straight into a worse one.
With low moisture cleaning, none of that trade-off exists. Regular
cleaning is what preserves carpet.
So when is extraction the right call?
When the problem has genuinely reached the padding. Soil, bacteria and pollutants
live at the surface level of carpet, not down in the pad, so the pad only needs
flushing when something soaked through to it.
In practice that means a pet accident, or a spill that went all the way down. Around
one job in ten. It also means an entryway or traffic lane where soil is ground in
deep enough that a targeted acid rinse and extraction pass gives the better result.
Both methods are available here, which is the point. The method gets matched to the
carpet in front of us, rather than the carpet being matched to the only machine on
the truck.
Before
After
When extraction is the right tool
Oils were ground deep enough into this commercial entryway that hot water extraction was the correct call, not the usual liquid dry cleaning. A full color restore rather than a surface sweep.
Not sure which one your carpet needs?
Describe it on the phone and you will get an honest answer, including if the answer is that it does not need cleaning yet.