6 Carpet Cleaning Methods Explained — Which One Is Right for Your Home?

Ask five carpet cleaning companies what method they use and you’ll often get five different answers, described five different ways — “steam cleaning,” “low-moisture cleaning,” “eco-friendly compound cleaning,” “deep extraction.” Some of that is genuine variety in equipment and approach. Some of it is marketing language dressing up a method that isn’t actually built for the job you’re hiring for. This guide breaks down all six methods in plain terms — what each one physically does to your carpet, where it’s genuinely the right tool, and where it falls short — so you can ask the right questions before you book anyone in Jackson County.

Method 1 — Hot Water Extraction (HWE)

What actually happens during a hot water extraction cleaning? A truck-mounted unit uses the vehicle’s engine to power a high-capacity vacuum blower and route engine heat through a heat exchanger, bringing water to a high cleaning temperature almost instantly. That hot water travels through a hose — commonly rated to run up to roughly 150 feet — into a cleaning wand at the carpet. The process runs in stages: a pre-spray loosens embedded soil, the extraction pass injects hot water under pressure while simultaneously vacuuming it back out along with the dissolved soil, a pH-balanced rinse pass neutralizes any residue from the pre-spray, and final dry strokes pull remaining moisture from the pile.

Hot water extraction is what Carpet Friend Medford runs on every residential job — see our full 7-step process for exactly how each stage works. It’s the method the IICRC (the industry’s standard-setting body for cleaning and restoration) identifies as the benchmark for residential carpet, and it’s frequently the method carpet manufacturers specify to keep a warranty valid.

Method 2 — Encapsulation

How is encapsulation different from a full wet extraction? Encapsulation uses a polymer-based cleaning solution applied with a rotary or cylindrical brush machine (sometimes called a CRB applicator). The polymer surrounds and crystallizes around soil particles as it dries — typically in 20 to 30 minutes, far faster than a wet extraction pass. Once dry, the crystallized soil no longer clings to carpet fiber, and a routine vacuum pass lifts it away. There’s no rinse step and very little standing moisture involved.

Encapsulation is genuinely useful — it’s just built for a different job than most residential homeowners need. It’s a maintenance tool that keeps light commercial soil from building up between real deep cleans, not a substitute for hot water extraction. A carpet that’s had months of foot traffic, pet exposure, or accumulated household soil needs the pile-depth reach that only a wet extraction pass provides.

Method 3 — Dry Cleaning (Very Low Moisture / VLM)

Is “dry” carpet cleaning actually dry? Not entirely — the name is a little misleading. Dry cleaning systems use solvent-based or specially formulated chemical cleaners applied with minimal water, usually through a branded proprietary system. The solvent breaks down soil without saturating the carpet, and because so little moisture is introduced, the carpet is typically ready to walk on almost immediately.

In Jackson County specifically, dry cleaning tends to fall short on the three soil types local homes deal with most: fine volcanic clay tracked in from yards and trails, pet hair and dander in a region with high pet ownership, and wildfire smoke particulate during fire season. None of those respond well to a low-moisture solvent pass the way they respond to hot water flushed through the full pile depth. Dry cleaning has a real place for delicate rugs; it’s rarely the right call for a standard Medford living room carpet.

Method 4 — Bonnet Cleaning

What is bonnet cleaning, and why does it get called “carpet cleaning” at all? A bonnet machine is a rotary floor buffer fitted with an absorbent cleaning pad. Cleaning solution is applied to the carpet surface, and the spinning pad wicks up soil as it moves across the top of the pile. It’s fast, requires minimal drying time, and can make a carpet look noticeably better within minutes — which is exactly why it’s popular for quick commercial refreshes.

Here’s the part worth being direct about: bonnet cleaning is controversial in the industry precisely because it’s sometimes marketed as “carpet cleaning” to budget-conscious commercial buyers when what it actually delivers is a surface refresh, not a deep clean. The IICRC doesn’t recommend bonnet cleaning as a primary residential method, and there’s a real mechanical reason why — because the pad only works the top of the pile, it can push soil deeper into the carpet and pad rather than remove it, leaving a carpet that looks better on day one but is dirtier underneath than before it started. Should you ask a company directly whether they use bonnet cleaning on residential jobs? Yes — and the honest answer from any reputable residential cleaner should be no.

Method 5 — Carpet Shampooing

Is carpet shampooing the same thing as steam cleaning? No, and this is one of the most common points of confusion. Shampooing is an older, legacy method: a rotating brush machine works a foaming detergent into the carpet, the foam is allowed to dry, and the dried residue — along with the soil it’s bonded to — is vacuumed up afterward.

The problem is what’s left behind. Foaming detergents used in shampooing tend to leave a sticky, alkaline residue in the fiber even after vacuuming. That residue acts almost like a magnet for new soil, which is why shampooed carpet often looks dirty again noticeably faster than carpet cleaned with hot water extraction. The IICRC doesn’t recommend shampooing as a standalone residential method for this reason, and it’s a method you mostly still encounter today from budget operations running older equipment rather than as an intentional professional choice.

How do you know if a company is going to leave that residue behind? Ask directly whether they rinse or extract after applying the cleaning solution. A pH-balanced rinse and extraction pass — the step built into our hot water extraction process — is what separates a method that removes residue from one that leaves it in the carpet to attract soil.

Method 6 — Absorbent Compound (Host-Style / Dry Compound) Cleaning

What is that powder some “dry” or “eco” carpet cleaning companies spread across the floor? Absorbent compound cleaning uses a biodegradable organic carrier material — often corn-cob or similarly plant-based — that’s lightly moistened with cleaning solution and worked into the carpet with a brush machine. As the compound sits in the pile for a short dwell time, it absorbs soil and oils from the fiber. Afterward, a thorough vacuum pass removes the compound along with the soil it picked up.

This category includes a number of branded systems marketed on eco-friendly and low-chemical-residue claims, and some carry third-party sustainability certifications. We won’t speak to any specific brand’s certification status here since that varies by product and changes over time — if a company markets a specific certification, it’s reasonable to ask them to show it.

Side-by-Side Comparison of All 6 Methods

Which method actually reaches soil deep in the pile versus just the surface? The table below lays out all six methods against the factors that matter most for a real cleaning decision.

The pattern is consistent across the table: hot water extraction is the only method rated for pet contamination and smoke treatment, because both require flushing hot water through the full depth of the pile to break down and remove what’s bonded to the fiber. Every other method has a legitimate commercial maintenance role, but none of them are built to replace a deep residential clean.

Which Method Matches Medford Conditions?

Does the “best” method actually change depending on where in Jackson County you live? Not fundamentally — but the reasons hot water extraction wins get more concrete when you look at what local homes actually deal with.

Put those three factors together and the conclusion for most Jackson County homes is straightforward: hot water extraction is the method that matches local conditions. The other five methods aren’t wrong or fake — they have real, legitimate niches in commercial maintenance and specialty situations — they’re just not built for what a typical Medford home actually needs removed from its carpet.

Carpet Cleaning Methods FAQ