Method names are a starting point
Hot water extraction is often called “steam cleaning,” although the name can be misleading: the process generally involves applying heated cleaning solution and recovering it, rather than relying on steam alone. The amount of moisture and the equipment used can vary. Ask a provider what the process involves for your carpet and how the work will be carried out.
Low-moisture cleaning describes approaches designed to use less water than conventional extraction. Depending on the system, cleaning solution may be worked into the pile and then removed or recovered. “Low moisture” is not a single recipe, so find out what is applied, how it is removed and what preparation is needed.
Dry compound is another approach
Some dry-compound processes distribute an absorbent cleaning material through the pile, work it into the carpet and then vacuum it away. The precise products and steps differ. Ask whether a dry compound is suitable for the fibre and construction, whether residue removal is included, and what you should expect after the visit.
No method is universally best for every carpet. Fibre type, backing, construction, soil, existing marks, previous treatments and the carpet’s condition all matter. A method that is appropriate in one room may not suit a delicate rug or a carpet with a loose edge. Stain removal is not guaranteed, and cleaning does not repair wear, fading or damage.
Ask about suitability and aftercare
Before agreeing, describe the carpet accurately and point out spills, repairs, fading or earlier spot treatments. Ask how the proposed method addresses the specific material, what areas are included and whether any limitations have been identified. If the assessment is uncertain, request that the provider explain the uncertainty rather than treating a method label as a guarantee.
Drying depends on the process, how much moisture remains, carpet construction, temperature, ventilation and humidity. Ask what the provider recommends for airflow and when to return furniture or resume normal use. Follow the service-specific guidance and wait until treated areas are dry before placing items back. These questions help you choose a suitable scope without assuming that a particular technique is part of every service.