Steam cleaning, low-moisture and dry carpet cleaning, compared
"Steam cleaning" is hot water extraction: a hot solution rinsed through the pile and vacuumed straight back out. It reaches deepest, Shaw’s warranties are written around it, and Engineered Floors recommends having a professional do it every 12 to 18 months. The low-moisture methods let you use the carpet sooner but work mostly on the top of the pile.
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What steam cleaning really is
Steam cleaning involves no steam at all. A wand sprays hot water and a cleaning solution into the carpet and, in the same pass, a strong vacuum pulls it back out with the soil it loosened. That is hot water extraction, and it is what most carpet cleaners mean by a deep carpet cleaning.
The machine comes in two forms. A truck-mounted unit never leaves the van: it heats the water there and feeds long hoses in through a door, which suits houses with parking near the entry. A portable unit is carried inside and plugs into the home’s outlets, which suits an upstairs condo or a home where hoses can’t reach. Shampooing, the older rotary-brush method, has mostly given way to extraction, because the soap it left behind attracted new soil.
The low-moisture family
| Method | How it works | Trade-off |
|---|---|---|
| Encapsulation | Worked into the pile, the solution dries into crystals that hold the soil until the next vacuuming removes them. $80–$200 per room on Angi’s figures | Dries fast; works mostly near the surface |
| Bonnet cleaning | A spinning absorbent pad buffs the top of the pile; $30–$90 per room on Angi’s figures | Freshens the look; leaves deeper soil |
| Dry compound | An absorbent powder brushed in and vacuumed out; dry cleaning runs $60–$130 per room on Angi’s figures | Almost no water; works near the surface |
| Carbonated (Chem-Dry) | Hot carbonated water lifts the soil for extraction, with far less water by Chem-Dry’s account; $120–$420, $280 on average on HomeAdvisor’s figures | Fast drying; a brand’s own process |
All of these use a small share of the water an extraction does, which is why the room is ready sooner. For comparison, Angi puts steam cleaning at $40–$90 per room.
Matching the method to the carpet
Nylon and polyester make up most wall-to-wall carpet, and either one takes extraction or a low-moisture method. Wool and wool blends are fussier: they need gentler chemistry and cooler water, so they call for a cleaner who works with wool.
- A carpet under warranty: hot water extraction, because the warranty may require it
- Allergies, spills or heavy soil: hot water extraction, which reaches the deepest
- A quick refresh between deep cleanings, or a room you need back the same day: a low-moisture method
- Pet urine: extraction only after a urine treatment, and never heat on the urine (the pet urine guide)
- Wool: a company that knows wool
The standard cleaners train to
Professional carpet cleaning has a written standard: ANSI/IICRC S100, the Standard for Professional Cleaning of Textile Floor Coverings, published by the IICRC, an ANSI-accredited standards body. The 2021 edition covers methods and chemistry, spot and stain removal, inspections before and after the work, and area rugs. Asking whether a company trains its technicians to S100 is a fair way to tell cleaners apart.
Carpet warranty cleaning requirements, and how often to clean
Cleaning can be a condition of a carpet warranty: Shaw’s warranties require proof of periodic hot water extraction, whether a professional service or a do-it-yourself system does the work, on equipment with the Carpet and Rug Institute’s Seal of Approval certification. Cleaning with a rented machine? Check that the machine carries that certification, and keep every receipt, each one dated and listing the rooms and the method.
Shaw recommends cleaning carpet in a typical household every 12 to 18 months, and how many people live in the home and how much traffic it gets decide where in that range it falls. Engineered Floors recommends a professional hot water extraction at the same interval. Pets or kids, smokers or heavy traffic put a home at the busy end, and so do allergies, since a cleaning lifts the dust and dander a vacuum leaves behind. Renting? The move-out guide covers what a landlord may charge.
Drying: hours, not days
Carpet cleaned by hot water extraction may stay damp anywhere from 8 to 24 hours, Stanley Steemer estimates, depending on humidity, temperature and airflow; for its carbonated cleaning, Chem-Dry says 1 to 2 hours is typical. Days are a warning sign. The U.S. Environmental Protection Agency’s mold guide says to get water-damaged areas and items dry in the first 24 to 48 hours so that mold doesn’t get started.
- Run fans and the air conditioning, or open windows on a dry day
- Walk on it in clean socks if you must, not in shoes or bare feet
- Leave the tabs or blocks under the furniture legs until the carpet is dry
- Until then, pets belong in a room with hard flooring
Sources
The cleaning prices on this page are national figures, read in October 2026 in the price guides listed below; none is a quote, and no Camarillo average turned up in the price guides checked. Facts about Camarillo come from the local pages listed.
- Shaw Floors, carpet cleaning and warranty care
- Engineered Floors, Dreamweaver carpet care
- Stanley Steemer, frequently asked questions
- Chem-Dry, how long carpet takes to dry
- Chem-Dry, Hot Carbonating Extraction vs. steam cleaning
- Angi, carpet cleaning cost (2026 data, updated September 21, 2026)
- HomeAdvisor, carpet cleaning cost (updated June 17, 2026)
- IICRC, ANSI/IICRC S100 Standard for Professional Cleaning of Textile Floor Coverings
- U.S. EPA, A Brief Guide to Mold, Moisture and Your Home