- HCT here means House Cleaning Technician, an individual credential from the IICRC, not a firm status.
- The course runs two days with 14 instructional hours; the exam and each retest cost $80 USD.
- The passing score is 75%, with two retest opportunities, each within 45 days of the prior scoring date.
- Four preparation topics: interior residential cleaning, sanitizing and disinfecting, non-disaster restoration, and normal maintenance.
Which HCT This Sheet Covers
The acronym "HCT" gets used for several unrelated credentials. This page is about one: the House Cleaning Technician certification governed and certified by the Institute of Inspection Cleaning and Restoration Certification (IICRC). If you are still sorting out terminology, our explainers on what HCT is and what HCT stands for cover the basics before you commit to a review plan.
One distinction trips people up early: the IICRC credential is separate from other residential-cleaning programs. ISSA Residential is an approved training provider for the IICRC HCT, and it also offers its own separate credential, which is not the same thing and is not covered here. When you register, make sure the course you pick is an IICRC-approved HCT course.
The Numbers at a Glance
Here is the one-page core of this cheat sheet. Everything in the table comes from IICRC's published material on the House Cleaning Technician credential.
| Item | Must-Know Fact |
|---|---|
| Certifying body | IICRC (Institute of Inspection Cleaning and Restoration Certification) |
| Prerequisites | None listed on IICRC's HCT page |
| Course length | Two days, 14 instructional hours (excluding exam time, lunch and breaks) |
| Exam fee | $80 USD for the initial exam and for each retest, separate from school tuition |
| Passing score | 75% |
| Retests | Two opportunities, each within 45 days of the prior scoring date |
| Renewal | Annual payment plus 14 continuing-education credit hours every four years |
| Who holds it | The individual, not the company |
For deeper treatment of each line, see our pages on HCT certification cost, the HCT passing score and HCT requirements.
The Four Preparation Topics
IICRC's course description names four topic phrases. They are unweighted preparation topics from a broad course summary, not a formal exam blueprint, so do not read them as official domain percentages or as a guarantee of exhaustive coverage. They are still the best structure for review. Interior cleaning of residences is the overarching subject, and the other three phrases are its named components.
Domain 1: Interior cleaning of residences
This is the umbrella topic and the one to anchor everything else to. Expect to reason about the home as a cleaning environment: its rooms, its surfaces, its furnishings and the soils that accumulate on them.
- Match the cleaning approach to the surface and material in front of you
- Understand how soils differ and why the same product does not suit every substrate
- Know the tools and equipment used for residential interiors and what each is for
- Keep safety in view whenever chemicals, equipment or occupied spaces are involved
Domain 2: Sanitizing and disinfecting surfaces
This topic separates cleaning from reducing microbial load. Candidates should be able to explain the difference between the terms rather than treat them as synonyms, since they describe different outcomes.
- Distinguish cleaning, sanitizing and disinfecting by purpose
- Recognize that surface condition and prior cleaning affect how well a product can perform
- Follow product directions on application, contact time and safe handling
- Connect sanitizing practices to occupant health in a residence
Domain 3: Non-disaster restoration
The key word is non-disaster. This topic concerns restoring the condition of household surfaces and contents in ordinary circumstances, not responding to catastrophic events. Keep that boundary clear when you review, because it shapes which scenarios fit the topic.
- Understand what restoring an item or surface means compared with routine cleaning
- Recognize when a problem is beyond a basic cleaning response
- Know the limits of a technician's role and when to escalate or refer
Domain 4: Normal maintenance
IICRC's course description uses the phrase "normal maintenance," while the dedicated HCT page calls the same topic "routine maintenance." Both point to the same idea: the recurring care that keeps a home in good condition between deeper work.
- Understand why consistent upkeep reduces the need for corrective work
- Recognize how maintenance frequency relates to use, traffic and soil load
- Be able to explain a maintenance approach to a client in plain language
For a fuller walk-through of how these areas fit together, read our guide to all four HCT content areas.
Course, Delivery and Exam Logistics
Under IICRC's general certification requirements, the path has three parts: attend an approved course, pass the written examination, and document the required skills. The two-day course is supplemented by on-the-job training and field experience, so classroom hours are a starting point and not the whole preparation story. There are no listed prerequisites on the HCT page, which makes this a realistic entry point for newcomers. See HCT requirements for the eligibility picture in more detail.
In-person versus live-stream
Sources disagree slightly on delivery, so confirm before you pay. The dedicated HCT page says in-person only, but IICRC's current Certifications Offered catalog and its Live-Stream Certifications page include HCT online, and ISSA Residential lists a two-day virtual class. The safe approach is to confirm the delivery arrangement of the specific approved course you select.
- In-person candidates: take the written exam on the final course day.
- Live-stream candidates: must attend the full course and take the exam through the IICRC Online Exam Portal, with ID verification and 45 days after the final course day to complete it.
Money and sequencing
Budget in two layers. The first is school tuition, which varies by provider. The second is the $80 USD exam fee, charged separately for the initial attempt and for each retest. ISSA Residential also lists an optional HCT manual separately at $149; that is supplemental preparation material, not a requirement. Our cost breakdown lays out how these pieces add up, and the exam dates guide covers how to find the course calendar.
Retest Rules You Should Memorize
Retest mechanics are where candidates most often lose track of deadlines. IICRC's Retest FAQs spell them out, and they are worth knowing before your first attempt rather than after.
- The passing score is 75%.
- You get two retest opportunities.
- The first retest must happen within 45 days of the initial examination scoring date.
- The second retest must happen within 45 days of the first retest scoring date.
- Each retest costs $80 USD.
- If you fail both retests, you must repeat the course and the examination.
The general FAQ uses a less precise "45 days" phrasing. Read it alongside the detailed Retest FAQs, which are the more specific source. For more on what the threshold means in practice, see the passing score guide.
Key Takeaway
Treat your first attempt as the one that counts. A retest is a safety net, but it costs another $80 USD and starts a 45-day clock. Finish your review before exam day, then use timed practice questions to find weak topics while you still have time to fix them.
Field Skills the Course Expects You to Know
The IICRC course description gives the four topic phrases above. A separate, ISSA-controlled badge listing for its residential House Cleaning Technician program names a wider set of preparation skills: environment, furnishings, health, materials and surfaces, safety, cleaning science, and tools and equipment. These come from a provider, so they support your preparation but should not be read as additional official exam domains. They are still a handy checklist of the practical knowledge behind the four topics.
| Skill Area | Where It Supports the Four Topics |
|---|---|
| Materials and surfaces | Choosing cleaning methods in interior cleaning; judging what restoration can and cannot do |
| Cleaning science | Understanding soils and chemistry behind both cleaning and sanitizing |
| Health | Sanitizing and disinfecting, and occupant-focused maintenance |
| Safety | Every topic, especially chemical handling and equipment use |
| Tools and equipment | Interior cleaning and normal maintenance routines |
| Furnishings and environment | Interior cleaning and the limits of non-disaster restoration |
If you want a structured plan built around these areas, our HCT study guide walks through a full preparation approach, and the page on how hard the HCT exam is helps you set expectations.
Keeping the Credential Active
Certification is not permanent. Maintenance requires an annual renewal payment and 14 continuing-education credit hours every four years. The renewal amount depends on which IICRC certifications you hold, so a technician with multiple credentials pays differently from someone with only HCT.
Two ownership points are worth remembering:
- HCT belongs to the individual. If you change employers, the credential goes with you.
- HCT is separate from IICRC Certified Firm status. A company can hold firm status without every employee being certified, and an individual can hold HCT without their employer being a certified firm.
Because the credential travels with you, it can matter when you are comparing roles. Our resources on HCT jobs, HCT earnings and whether the certification is worth it help you weigh the investment. Employers in residential cleaning and related service work are the natural audience for a credential like this, but check actual job postings in your area to see how they treat it.
Scheduling Review by Topic
This is the only general-method section in this sheet, and it is tied directly to the four topics. The logic: start with the umbrella topic, because the other three build on it, and finish with the topic that is easiest to confuse with its neighbors.
Interior cleaning of residences
- Review surfaces, materials, soils, tools and safety basics
- Build a one-page glossary of terms you keep mixing up
Sanitizing and disinfecting, then normal maintenance
- Write out the difference between cleaning, sanitizing and disinfecting in your own words
- Pair maintenance routines with the surfaces and soils from Week 1
Non-disaster restoration and mixed review
- Define the boundary between routine cleaning and restoration
- Take mixed-topic practice sets at hctexam.com and revisit your weakest topic
Adjust this to your course date. If your exam falls on the last day of a two-day class, do most of this before you attend, and use the course itself to fill gaps.
Quick Answers (FAQ)
It stands for House Cleaning Technician, an IICRC credential. Other certifications share the same letters, but none of their details apply here. For background, see what HCT means.
IICRC's Retest FAQs specify a 75% passing score. You get two retest opportunities, each within 45 days of the prior scoring date, and each retest costs $80 USD.
Two days, totaling 14 instructional hours, not counting exam time, lunch or breaks. It is supplemented by on-the-job training and field experience.
Sources differ. IICRC's dedicated HCT page says in-person only, while its Live-Stream Certifications page and catalog include HCT online, and ISSA Residential lists a two-day virtual class. Confirm the delivery format with your chosen approved school. Live-stream candidates take the exam in the IICRC Online Exam Portal with ID verification.
The current question count and time limit were not verified in IICRC's issuer sources, so this sheet does not state them. Ask your approved school. For general context, see what the data shows on pass rates.
It requires maintenance: an annual renewal payment and 14 continuing-education credit hours every four years. The renewal amount depends on the certifications you hold.
Use this sheet as your anchor, then pressure-test it with practice questions. When you are ready to check how much has stuck, head to the HCT practice test and see which of the four topics needs another pass. For a broader overview of the credential itself, our page on HCT certification is a good companion read.