Lesson 1Cleaning registers, grilles, boots and grilles: removal, brushing, wiping, sanitizing options and fasteners reinstallationThis part specifies secure cleaning of registers, grilles, and boots, covering removal, brushing, wiping, optional sanitising, and proper refitting of fasteners to avoid air escapes, noises, and surface damage in residential settings.
Identifying register and grille typesSafe removal without wall damageManual and mechanical brushing methodsSurface wiping and rinsing optionsUsing sanitizers and documenting useReinstalling fasteners and sealingLesson 2Step-by-step cleaning of return ducts: access creation, agitation sequence, vacuuming technique, protecting furnace intakeThis part offers a sequential guide for cleaning return ducts, including access formation, agitation and vacuum setup, furnace intake protection, sealing post-cleaning, and noting conditions and outcomes for client records.
Locating and marking return duct runsCutting and sealing access openingsAgitation sequence for return ductsVacuum hose placement and passesProtecting furnace and filter intakePost-cleaning sealing and photosLesson 3Overview of cleaning methods and when to use each: negative air with agitation, source removal vacuuming, contact brushing vs air whippingThis part reviews primary duct cleaning approaches, such as negative air with agitation, source removal vacuuming, contact brushing, and air whipping, offering advice on suitable applications and effective combinations for home systems.
Negative pressure cleaning principlesSource removal vacuuming basicsContact brushing tools and usesAir whipping tools and limitationsChoosing methods by duct materialCombining methods for best resultsLesson 4Step-by-step cleaning of supply ducts: downstream access strategy, coil and plenum containment, sequence to avoid recontaminationThis part delineates a sequential approach for cleaning supply ducts, involving downstream access planning, coil and plenum safeguarding, agitation and vacuum order, and steps to halt recontamination of purified areas.
Mapping supply branches and trunksDownstream access and plug strategyIsolating coil and plenum areasAgitation sequence for supply runsVacuuming from distal to main trunkPreventing recontamination of branchesLesson 5Approach to flexible ducts and attic-only vents: gentle agitation techniques, air-whip length control, inspection without destructive removal, when to avoid cleaningThis part clarifies handling flexible ducts and attic vents with mild agitation, regulated air-whip methods, and cautious checks, while identifying when cleaning poses risks or lacks value, favouring replacement instead.
Construction of flexible duct assembliesPre-cleaning inspection in atticsGentle brushing and agitation limitsAir-whip length and pressure controlNon-destructive camera inspectionCriteria for avoiding flex duct cleaningLesson 6Decontamination and waste management: filter and debris disposal, HEPA vacuum canister handling, cleaning tools between jobsThis part covers decontamination and waste handling, including filters, debris, and HEPA canisters, tool cleaning and disinfection between tasks, waste bagging and labelling, and averting cross-contamination in households.
Collecting and bagging duct debrisHandling and sealing used filtersEmptying HEPA canisters safelyCleaning and disinfecting toolsPreventing cross-contaminationWaste storage, labelling, and transportLesson 7Air handler and accessible plenum cleaning steps: blower wheel cleaning, drain pan cleaning, coil exposure limits, gasketed access, avoiding damage to controlsThis part addresses cleaning air handlers and reachable plenums, encompassing blower wheel and drain pan maintenance, restricted coil access, gasketed entry creation, and preserving wiring, controls, and cabinet wholeness during service.
Lockout, tagout, and safety checksOpening cabinets and access panelsBlower wheel and housing cleaningDrain pan and drain line cleaningCoil exposure limits and shieldingProtecting controls, wiring, and sealsLesson 8Setting up negative air machines and HEPA vacuums: sizing, hose routing, creating negative pressure, exhaust placement and filteringThis part elaborates on configuring negative air machines and HEPA vacuums, covering equipment scaling, hose directing, establishing steady negative pressure, exhaust positioning and filtering, and confirming airflow with basic site tests.
Calculating airflow and equipment sizeConnecting ductwork and hosesSealing access points for drawExhaust placement and filtrationVerifying negative pressure directionMonitoring performance during workLesson 9Handling hard-to-reach vents and high registers safely: extension tools, vacuum hose routing, ladder safety, minimising ceiling damageThis part emphasises safely addressing difficult vents and elevated registers using extension implements, correct vacuum hose paths, ladder arrangement, and methods to reduce ceiling and wall harm while capturing dust effectively.
Assessing reach and access challengesSelecting extension poles and toolsSafe ladder setup and positioningRouting hoses to prevent damageProtecting ceilings and wall finishesFinal inspection of high registers
