Lesson 1Cleaning registers, grilles, boots and grilles: removal, brushing, wiping, sanitizing options and fasteners reinstallationThis part specifies secure cleaning of registers, grilles, and boots, encompassing removal, brushing, wiping, optional sanitising, and proper refitting of fasteners to avert air escapes, noises, and aesthetic harm to surfaces.
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 forming access, arranging agitation and vacuuming, shielding the furnace intake, resealing openings, and noting conditions and outcomes for clients.
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 gives an overview of primary duct cleaning approaches, such as negative air with agitation, source removal vacuuming, contact brushing, and air whipping, with advice on suitable applications and effective combinations.
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 sketches a sequential approach for cleaning supply ducts, including downstream access planning, guarding coils and plenums, agitation and vacuuming order, and steps to hinder recontamination of purified sections.
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-only vents with mild agitation, regulated air-whip methods, and cautious checks, whilst identifying when cleaning poses risks or lacks efficacy, 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 managing filters, debris, and HEPA containers, sanitising tools across jobs, labelling and bagging refuse, and averting cross-contamination to other spaces.
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, including blower wheel and drain pan maintenance, restricted coil access, forming gasketed entries, and preserving wiring, controls, and cabinet wholeness during and post-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 paths, establishing dependable 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 concentrates on securely cleaning inaccessible vents and elevated registers using extension implements, correct vacuum hose paths, ladder arrangements, and methods to reduce ceiling and wall harm whilst capturing dust and debris 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
