Short answer
Every mattress cleaning method changes three things: how much water it leaves in the bed, how it delivers heat, and what it takes away or leaves behind. Extraction and shampooing are wet, detergent-based methods borrowed from carpet; dry-vapor steam is a heat method with little added water; HEPA vacuuming is removal only. Check your mattress maker's care instructions first.
By Matthew Brunken · Updated October 2, 2026 · Last reviewed October 2, 2026 · Sources · Editorial standards
Cleaning changes three things in a mattress: how much water goes into it, how heat reaches the fabric, and what is taken out or left behind. Hot-water extraction and shampooing put water and detergent in, then try to pull them back out. Dry-vapor steam delivers heat with a small amount of condensed water. HEPA vacuuming only removes. Whatever the method, the mattress maker's care label comes first.
Why this hub exists
Mattress cleaning is often offered as an add-on to carpet cleaning, using the same hot-water extraction equipment. That isn't a criticism of carpet cleaners. It does mean the tools and vocabulary used on many mattresses were designed for floors, where the Carpet and Rug Institute says hot-water extraction is the most common professional residential carpet cleaning system.
The result is that the same words can mean different things. "Steam cleaning" might mean hot-water extraction, a handheld garment steamer or a pressurized dry-vapor boiler. "Dry" might mean dry to the touch in an hour or dry all the way through by tomorrow. "Sanitize" might mean a measured reduction in germs, or it might just mean "cleaned."
This hub fixes the vocabulary first. Each article explains one mechanism: where the water goes, how heat gets into fabric, what gets removed and what stays behind. We cite equipment specifications, manufacturer care instructions, carpet-industry standards and peer-reviewed studies, and we say so plainly when the data doesn't exist.
How to use this hub
- New to the topic? Start with the flagship comparison of mattress cleaning methods, then read the articles under "Moisture, heat and the mattress."
- Comparing quotes from two companies? Read dry-vapor steam vs carpet extraction for mattresses and why carpet-cleaning equipment and mattress-sanitation equipment aren't necessarily interchangeable.
- Own a memory foam mattress? Read what happens when water penetrates memory foam before anything else, and check your manufacturer's care instructions.
- Looking up a word? Every defined term in the vocabulary list below has its own link, and the articles link back to it.
How later guides build on this one
Later hubs in the Knowledge Center lean on the definitions here. The second, Can this mattress be professionally sanitized?, quotes what each manufacturer's care page says about steam, water, heat and chemicals. When a mattress maker writes a care instruction, that instruction governs. Tempur UK says "Do not steam-clean or dry-clean the TEMPUR Material." It warns "There is a high risk that soaking with water or other cleaning fluids will cause irreversible damage" and adds, "It will also invalidate your guarantee." Tempur-Pedic US says TEMPUR material "should never become wet" and notes "Due to the temperature-sensitivity of the TEMPUR-material, adding high heat can hinder its ability to react to your body temperature and conform to your body shape." Purple says "you should not steam clean a memory foam, latex, or adjustable mattress since the heat and water could damage its materials" and "you should not steam clean a Purple mattress". Sleep Sanitation does clean Tempur-Pedic and Purple mattresses with an Italian-made Vapor Clean dry-vapor system (Vapor Clean's product page claims "just 5-6% moisture," a maker claim, not a measurement of our equipment), in quick, low-moisture passes. That is our own method and reasoning, not an exemption from either maker. Your care label and warranty terms govern your own decision, and following the label is the safe default; check your warranty terms, or ask the manufacturer, before any steam or vapor cleaning. This hub explains the mechanisms behind instructions like these, so the reasons make sense and you can compare what different cleaning providers actually do.
The third hub, Mattress accidents: urine, pets, sweat and odor, applies these mechanisms to a specific problem: where urine goes inside a mattress, what can be removed, and why low moisture matters most when the stain is organic.
What we don't know
- How much water a steam pass leaves in a mattress. Vendors publish water-flow and "5% moisture" figures for their machines, but we have not found an independent measurement of moisture left in a mattress after steam cleaning.
- Fabric surface temperatures. Boiler and tip temperatures are published; the temperature the ticking and comfort layers actually reach during a normal pass generally is not.
- A mattress-specific cleaning standard. We have not found a consensus standard written for in-home mattress cleaning. Carpet and upholstery standards from the IICRC and CRI are the closest references.
- Clinical outcomes. The 2013 dust mite practice parameter says no clinical trials have shown a benefit from physical measures such as heating, so we don't claim health outcomes for any method.
Our editorial standard
Every figure in this hub's glossary has its source linked beside it, and each article names or links the source for every figure it uses and lists all sources at the end. Claims made by equipment sellers are labeled as vendor claims. Studies are described with their real conditions, such as carpet rather than mattresses or lab surfaces rather than homes, because those details change what a result means. Sleep Sanitation is a dry-vapor steam mattress sanitation company, so we have a point of view. We try to keep it out of the definitions.