TL;DR
Twelve questions separate a company that has thought about your floor from one that is reading a script: which method and why, what the base price covers, what triggers an upcharge, who shows up, whether they carry insurance, and what happens if a spot comes back. Ask them before you book, and get the answers in writing rather than over the phone.
The four questions about the work itself
1. Which cleaning method will you use on my carpet, and why that one?
A good answer names the method and ties it to your fiber and soil level. Hot water extraction is the deep-clean default. Encapsulation and bonnet cleaning are low-moisture options that dry fast and suit light-soil work. Dry compound suits carpet that cannot get wet.
A bad answer is a slogan. If the reply is that they use the best method on every job, that is a truck, not a plan.
2. What is the base price, and exactly what steps does it cover?
Ask in steps rather than adjectives: pre-vacuum, pre-spray, agitation, extraction, rinse, grooming. Those six words get a straight answer. "Deep clean" does not, because the phrase has no industry definition. Details are in what belongs in a base price.
3. What is not included, and what triggers an extra charge on site?
Stairs, hallways, pet urine treatment, protector, deodorizer and heavy furniture moving are the usual extras. Ask for a dollar range on each one now, not after the truck arrives.
4. How long will the carpet take to dry?
Six to twelve hours is normal for hot water extraction, with airflow driving the result more than heat. Low-moisture methods can be walkable in an hour or two. Thirty minutes for a deep extraction is a warning, not a feature.
Source: IICRC S100 carpet cleaning standard
The four questions about the company
5. Are you insured, and can you send a certificate?
General liability coverage is the one that matters when a hose knocks over a lamp or a hallway gets a wet spot on the hardwood. Certificates are routine to send. There is a walkthrough in verify the company is insured.
6. Is your technician certified, and by whom?
The IICRC is the recognized certification body, and S100 is the carpet cleaning standard. Certification is not a guarantee of a good day, but it does mean someone studied fiber chemistry rather than learning entirely on customer floors. More detail sits in what IICRC certification means.
7. How many technicians will be on the job, and are they background checked?
Crew size changes the timeline, and a solo technician on a whole house is a long day. Background screening is fair to ask about when strangers will be alone in your home.
8. How long have you worked in this area, and can you send recent local references?
Longevity in one market beats a national brand name as a signal. A company that faces the same neighborhoods every year behaves differently than one passing through.
The four questions about what happens after
9. What is your policy if a spot returns?
Spots that reappear are usually wicking, where soil in the backing rises as the pile dries. That is a known phenomenon with a known fix, and a serious company will explain it rather than get defensive. Ask what the callback window is and get it written down.
10. Will I get a written estimate before work starts?
Yes is the only acceptable answer. The estimate should list measurement basis, scope, extras and total.
11. What do you need me to do before you arrive?
Clearing small items, securing pets and picking up floor clutter is standard. A company that has an answer here has run the job before. There is a full prep list in how to prepare for carpet cleaning.
12. How do you take payment, and is a deposit required?
Deposits are normal on large or scheduled-in-advance jobs. Cash-only demands on the day of service are not.
What should the answers to these questions cost me?
Nothing. Quoting, phone consultation and a written estimate are standard unpaid steps across the industry. Some companies charge for an in-home inspection on very large or complex jobs and credit it against the work, which is reasonable when disclosed in advance.
Industry Baseline Range
| Service element | Typical published range |
|---|---|
| Written estimate or phone quote | Free at most companies |
| In-home inspection, large or complex job | $0 to $75, often credited to the job |
| Base cleaning, per room | $25 to $75 per room |
| Base cleaning, per square foot | $0.20 to $0.60 per sq ft |
| Deposit to hold a scheduled slot | $0 to $100, or a percentage of the job |
These figures reflect published industry averages. Current market pricing varies significantly and actual quotes may fall well outside these ranges based on site-specific conditions, material costs, and project complexity.
Current Market Reality
Most residential carpet cleaning is quoted free, because quoting is cheap and winning the job is the point. That changes on jobs needing real diagnostic work -- suspected sub-surface pet contamination, water damage, delamination or an unidentifiable fiber. Those visits cost the company an hour and often get billed, which is not a red flag as long as it was disclosed beforehand.
Prices also move with the calendar. Late spring and the end of summer are heavy move-out seasons, and lead times stretch. Booking mid-week and off-season usually gets a better slot.
What to do with the answers
Write them down as you go, one list per company, and ask every company the same twelve in the same order. That turns twelve conversations into a comparison you can read.
Then look at the shape of the answers rather than the content. Specific numbers, named methods, and a willingness to put things in an email are the signal. Vagueness that resolves into a slogan usually predicts how the day of service will go.
Finally, ask for the scope in writing before you commit to a date. A company that answers well on the phone and then refuses to email the scope has told you those answers were sales rather than policy.
FAQ
What is the single most important question to ask a carpet cleaner?
Ask what is not included in the quoted price. Every other question tells you about quality. That one tells you about the final bill, and it is the question that prevents the most disputes, because the gap between an estimate and an invoice is almost always an unlisted extra.
Should I ask for references or just read reviews?
Do both, and weight recent local reviews heavily. References are self-selected by definition, so their value is in the follow-up questions you ask, such as whether the final price matched the estimate and whether the technician arrived in the window promised.
Is it rude to ask a carpet cleaner about insurance?
Not at all. It is a routine business question, and legitimate companies answer it in a sentence. A certificate of insurance takes minutes to send. A company that reacts badly to the question has told you something useful for free.
How far in advance should I book carpet cleaning?
One to two weeks is a comfortable window in most markets, and longer during move-out season, holiday weeks and the end of the month. If you need a specific dry-by time, book early and say so, because the first appointment of the day gives the carpet the most hours to dry.
Should I ask about the chemicals used?
Yes, especially with infants, pets, allergies or asthma in the house. Ask for the product names and whether a safety data sheet is available. Rinse quality matters as much as the product, because detergent residue left in the pile is what attracts soil back to a clean carpet.
What if the answers change when the technician arrives?
Stop and compare against the written estimate before work begins. Conditions genuinely do change once someone sees the floor, and a revised price can be legitimate. What is not legitimate is a new number appearing with no explanation of what changed, delivered while the equipment is already running.
Every home is different, so the real number depends on size, fiber, soil load and what you want covered. Get a quote with the scope written out and no hidden fees. Start at our carpet cleaning page, read how to choose a carpet cleaning company, or head straight to get a quote.