Lesson 1Refrigerant handling, recovery, and environmental compliance: safe charging practices, leak-checking, recovery equipment, refrigerant types and GWPCovers safe refrigerant management pre-startup, like cylinder storage, recovery steps, leak tests, vacuuming, charging, and following environmental rules and paperwork.
Refrigerant types, GWP, and labelingCylinder storage, transport, and safetyRecovery machines, hoses, and tanksLeak testing and evacuation planningCharging methods and documentationLesson 2Outdoor unit siting and mounting: clearances, vibration isolation, pad choices, flood and snow considerationsDetails picking and prepping outdoor unit spots for proper space, airflow, vibration damping, and safety from floods, snow, debris per maker guidelines and local codes.
Manufacturer and code clearance requirementsAirflow, noise, and neighbor considerationsPads, stands, and wall brackets selectionVibration isolation and anchoring methodsFlood, snow, and debris protection designLesson 3Condensate management and overflow protection: primary/secondary drains, traps, condensate pumps, float switchesExplains setting up solid condensate drains with main/backup lines, traps, pitch, pumps, overflow sensors, and code rules to avoid water issues and repeat calls.
Primary drain sizing and slope rulesSecondary drains and emergency pansTrap design, venting, and primingCondensate pump selection and layoutFloat switches and overflow shutoffLesson 4Refrigerant line set routing and piping best practices: routing, insulation, vapor trap, brazing and flare considerationsBest ways to route and fit refrigerant lines, covering supports, insulation, traps, slope, brazing/flaring, to cut pressure loss and avoid leaks later.
Planning line paths and wall penetrationsLine support spacing and protectionInsulation thickness and UV protectionBrazing, purging, and nitrogen useFlare fittings, torque, and leak risksLesson 5Indoor equipment placement: air handler/coil mounting, mini-split indoor head locations, condensate drain routingCovers indoor unit positioning for air handlers/coils, mini-split heads, service space, airflow, noise, and condensate drain paths to safe outlets.
Air handler and coil mounting optionsReturn and supply airflow considerationsMini-split head height and wall placementService access and noise mitigationCondensate drain routing constraintsLesson 6Pre-installation inspection: assessing existing ductwork, attic/utility layout, refrigerant access, and structural constraintsHow to check the site beforehand: ducts, attic/utility areas, refrigerant routes, framing/access limits impacting size, paths, and work planning.
Documenting existing HVAC and electricalDuct leakage, sizing, and insulation checksAttic, crawlspace, and utility access reviewRefrigerant line routing feasibility surveyStructural and penetrations constraints reviewLesson 7Tools, rigging, and lifting: safe handling of outdoor units, use of lifts or hoists, vehicle and site access planningTools and rigging for safely moving units: dollies, straps, hoists, cranes, and site access plans to prevent damage or injury.
Pre-job tool and equipment checklistSafe manual handling and team liftsUse of dollies, ramps, and stair climbersRigging with hoists, cranes, and slingsVehicle access and site protection plansLesson 8Electrical and control requirements: disconnects, breaker sizing, wire gauge, ground-fault protection, thermostat wiring and controlsElectrical needs: service size, breakers/wires, disconnect spots, earthing, GFCI/AFCI, thermostat wiring and labelling.
Load calculations and panel capacity checkBreaker sizing and wire gauge selectionDisconnect location and mounting rulesGrounding, bonding, and GFCI or AFCIThermostat and control wiring planningLesson 9Key safety precautions: electrical safety, refrigerant exposure and PPE, safe brazing practices, fall protection, lockout/tagoutMain safety steps for prep and install: electrical risks, refrigerant handling with PPE, safe brazing, falls, lockout/tagout on live gear.
Job hazard analysis and safety briefingElectrical shock and arc flash controlsRefrigerant exposure and ventilationSafe brazing, fire watch, and permitsFall protection and lockout or tagout
