Advanced Technology

Course Description

Advanced Technology prepares students to demonstrate the skills and knowledge needed for service and repair technician positions in HVAC-related jobs and careers, emphasising job site safety, employability skills, proper tool usage, and basic math skills. Students have the opportunity to earn ESCO Gas Heat Employment Ready and ESCO Heat Pump Employment Ready Certifications.

Within the SCNS taxonomy, ACR is the Air Conditioning, Refrigeration and Heating prefix, and the 0000-level number marks this as PSAV clock-hour instruction. Daytona State publishes it at 150 clock hours with a $365.37 lab fee, offered fall and spring, with ACR0561C as prerequisite and ACR0810C as corequisite. ⚠ It carries no college credit.

The two certifications tell you what this course is: heat pumps and gas heat — the two ways buildings are heated, and the two areas where a technician's knowledge most often runs out. Heat pumps dominate in Florida because the climate suits them, and their reversing valves, defrost controls, and auxiliary heat sequences are where residential diagnosis becomes genuinely difficult. Gas heat brings combustion, and combustion brings carbon monoxide — the one fault in this trade that kills the customer rather than the equipment.

Learning Outcomes

Required Outcomes

• Describe heat pump operation in heating and cooling modes.
• Describe the reversing valve and diagnose its faults.
• Trace refrigerant flow through a heat pump in both modes.
• Describe defrost cycles, their initiation, and their termination.
• Diagnose defrost control faults.
• Describe auxiliary and emergency heat and their control sequences.
• Measure and interpret heat pump performance in heating mode.
• Charge a heat pump correctly and describe seasonal considerations.
• Describe balance point and supplemental heat sizing.
• Describe gas heating equipment and its components.
• Describe the combustion process and its requirements.
• Describe gas types, pressures, and piping requirements.
• Measure and adjust manifold gas pressure.
• Describe ignition systems and their sequences of operation.
• Diagnose ignition and flame-sensing faults.
• Describe heat exchangers and inspect for cracking.
• Describe venting requirements and identify unsafe venting.
• Test for combustion gas leaks and unsafe conditions.
• Describe carbon monoxide, its causes, and the required response.
• Perform combustion analysis and interpret the results.
• Describe electric resistance heat and its sequencing.
• Read and interpret ladder and wiring diagrams.
• Diagnose control circuit faults systematically.
• Document diagnosis and communicate safety findings to a customer.

Optional Outcomes

• Describe variable-speed and inverter-driven equipment.
• Describe communicating controls and diagnostics.
• Describe geothermal heat pump systems.
• Describe hydronic heating fundamentals.
• Describe modulating and two-stage equipment.
• Prepare for NATE certification.

Major Topics

Required Topics

• Heat pump operation in both modes
• Reversing valves and their faults
• Refrigerant flow in a heat pump
• Defrost cycles
• Defrost control diagnosis
• Auxiliary and emergency heat
• Heating mode performance
• Heat pump charging
• Balance point and supplemental heat
• Gas heating equipment
• The combustion process
• Gas types, pressures, and piping
• Manifold pressure adjustment
• Ignition systems and sequences
• Ignition and flame-sensing faults
• Heat exchangers and cracking
• Venting requirements
• Combustion gas leak testing
• Carbon monoxide
• Combustion analysis
• Electric resistance heat
• Ladder and wiring diagrams
• Control circuit diagnosis
• Documentation and safety communication

Optional Topics

• Variable-speed and inverter equipment
• Communicating controls
• Geothermal heat pumps
• Hydronic heating
• Modulating and two-stage equipment
• NATE certification preparation

Resources & Tools

• The programme's laboratory, live equipment, and recovery machines — the reason to take this in person. Book every open lab hour; this trade is learned with your hands.
• Refrigeration and Air Conditioning Technology (Whitman, Johnson, Tomczyk & Silberstein) — the standard text for this programme and the one to keep afterwards.
• Modern Refrigeration and Air Conditioning (Althouse, Turnquist & Bracciano) — the other standard reference.
• EPA Section 608 study materials (epa.gov) — free official guidance, plus inexpensive practice tests; the authority for anything in this guide about refrigerant rules.
• ESCO Institute (escogroup.org) — administers the EPA 608 and the Employment Ready certifications this programme carries.
• NATE (natex.org) — North American Technician Excellence; the credential to plan for once you have field experience.
• ACCA (acca.org) — the contractors' association; Manual J, S and D are the industry standards for load calculation, equipment selection, and duct design.
• AHRI directory (ahridirectory.org) — free; verified equipment performance data and matched-system ratings.
• Florida DBPR (myfloridalicense.com) — free; the authority on Florida contractor licensing.
• Florida Building Code — Mechanical and Energy Conservation volumes — what installations are actually inspected against here.
• Manufacturer service literature and wiring diagrams — learn to read a ladder diagram properly; it is the difference between diagnosing and guessing.
• A good multimeter, gauges, and a vacuum micron gauge — the micron gauge is the tool that separates professionals from parts-changers, and beginners routinely skip it.

Career Pathways

• Heating, air conditioning, and refrigeration mechanic and installer — SOC 49-9021.
• Residential service technician — the most common entry route, and where diagnostic skill is built fastest.
• Installation crew — new construction and change-outs; physical work with clear progression.
• Commercial and light commercial service — rooftop units, chillers, and building systems.
• Commercial and industrial refrigeration — supermarkets, cold storage, and food service; the best-paid speciality and consistently short of trained technicians.
• Controls and building automation — a growing, technical, and well-paid pathway.
• Maintenance technician in hospitals, hotels, theme parks, schools, and government facilities — salaried with benefits, and a very large Florida sector.
• Marine and transport refrigeration — a Florida-specific niche given the ports and the produce trade.
• Energy auditing and performance testing.
• Service manager, dispatcher, or estimator — the usual progression off the tools.
• Technical sales and manufacturer representation — companies recruit experienced technicians specifically.
• Instruction — teaching in a programme like this one after several years in the field.
• Contracting on your own account — ⚠ a licensed activity in Florida requiring documented experience; see the licensing note.

Special Information

⚠⚠ Carbon monoxide — the fault that kills the customer

• This is the most serious safety responsibility in the trade, and it is not about your safety but about the family living in the house.
• Carbon monoxide is colourless, odourless, and lethal, and its early symptoms — headache, nausea, fatigue — are mistaken for illness. People go to sleep and do not wake.
• A cracked heat exchanger can put combustion products into the supply air. Inspect properly, and know your company's procedure when you find one.
• ⚠⚠ If you find an unsafe condition, shut the equipment down and red-tag it. Do not restore it because the customer objects or because it is cold. Document what you found, what you did, and what you told them. A technician who leaves a known unsafe appliance in service carries personal responsibility for what follows.
• Check the venting. Disconnected, corroded, blocked, or improperly sloped vents are common and they are the direct route to a poisoning.
• Check for combustion air. A sealed room starves an appliance and produces incomplete combustion.
• Test for spillage and backdrafting, including with exhaust fans running — a powerful kitchen fan can reverse a vent.
• Use a combustion analyser and a CO monitor, and wear a personal CO monitor yourself.
• Recommend CO alarms in any home with combustion appliances or an attached garage.
• ⚠ Rule 11 applies — codes, venting requirements, and testing standards change; follow current code and your employer's procedure.

⚠ Heat pumps are where residential diagnosis gets difficult

• A heat pump is an air conditioner that can run backwards, and almost everything confusing about them comes from that.
• Know which line is which in each mode. The suction and liquid lines swap function, and diagnosing a heat pump in heating mode with cooling-mode habits produces confident wrong answers.
• Reversing valve faults are commonly misdiagnosed. A valve that leaks internally bleeds hot gas across and produces poor performance in both modes with no obvious failure.
• Defrost is a sequence, not a component. Understand what initiates it and what terminates it before condemning a board.
• Auxiliary heat masks problems. A system with a failed compressor may still heat the house on strip heat while the customer's bill triples — and in Florida this can go unnoticed for a whole season.
• Check whether auxiliary heat is running when it should not be. This is a common and expensive fault, and finding it is genuinely valuable to the customer.
• Charge is critical on heat pumps and the correct method depends on mode and on manufacturer guidance — weigh the charge where possible.
• Read the sequence of operation in the service literature before diagnosing. Every manufacturer differs, and guessing wastes far more time than reading.

⚠⚠ Refrigerant will hurt you in three different ways

• Asphyxiation. Refrigerants are heavier than air and displace oxygen in low and confined spaces — crawl spaces, pits, walk-in boxes, and machine rooms. People have died from this without ever feeling short of breath, because the gas is not toxic and gives no warning; ventilate, and never work a leak in a confined space alone.
• Frostbite. Liquid refrigerant flashing to gas is intensely cold and causes instant severe frostbite on skin and permanent injury to eyes. Safety glasses and gloves, every time you connect or disconnect a hose — not just when you expect a release.
• Pressure. A charged system stores real energy, and a cylinder is a pressure vessel. Never heat a refrigerant cylinder with a torch, never overfill one, never transport one loose in a vehicle, and never exceed 80 percent fill on a recovery cylinder.
• Never braze or apply heat to a pressurised or charged system. Recover first, then purge with dry nitrogen while brazing.
• Refrigerant decomposes into toxic products in contact with a flame — including phosgene — so a leak near an open torch is a chemical hazard as well as a fire one.
• Use a regulator on nitrogen. A nitrogen cylinder at full pressure connected directly to a system will rupture it explosively; this has killed technicians.
• Know where the recovery machine and the leak detector are, and use them. Recovery is both the law and the professional standard.
• Keep cylinders upright, secured, and labelled, and never mix refrigerants in a recovery cylinder.

⚠⚠ Electrical work is the part of this trade that kills people

• HVAC technicians work on live 240-volt equipment routinely, and electrocution is a leading cause of death in the trade.
• ⚠⚠ Capacitors store a lethal charge after the power is off. A run or start capacitor can hold enough energy to kill after the disconnect is pulled. Always discharge capacitors before touching terminals, using the correct method, and treat every one as charged.
• Lock out and tag out, and verify the circuit is dead with a meter you have just tested on a known live source. Test the meter, test the circuit, test the meter again.
• One hand in a pocket when you must probe live, so a shock cannot cross your chest.
• Know that the disconnect may not de-energise everything — control circuits, crankcase heaters, and separately fed components can remain live.
• Wear the right personal protective equipment, use insulated tools, and stand on a dry surface.
• Never bypass a safety control to make a unit run. The control exists because the failure it prevents is serious, and a bypassed safety left in place is a hazard you created.
• Do not work energised when you can avoid it. Convenience is not a justification, and the pressure to keep a customer's system running is exactly when accidents happen.

⚠⚠ EPA Section 608 is a legal requirement, not a nice-to-have

• Under Section 608 of the federal Clean Air Act, technicians who maintain, service, repair, or dispose of equipment containing regulated refrigerants must be certified — and certification is required to purchase regulated refrigerant at all. Without it you cannot lawfully do the central task of this trade.
• The certification has types — Type I (small appliances), Type II (high-pressure), Type III (low-pressure), and Universal (all three). Sit the Universal examination if you can; it costs little more and it closes off no employment.
• It does not expire, which makes it unusually good value among trade credentials.
• ⚠⚠ Venting regulated refrigerant is a federal violation carrying substantial civil penalties, and the obligation is on the individual technician as well as the employer. Recover, never vent — this is the single rule that most defines lawful practice in this trade.
• Recordkeeping obligations attach to refrigerant purchase, recovery, and disposal, and to leak repair on larger systems.
• This programme also carries ESCO Employment Ready certifications — brazing and soldering, system recovery and evacuation, gas heat, and heat pump — and OSHA 10 Construction Site Safety. Employers recognise these by name; collect every one the programme offers.
• NATE certification is the widely recognised next credential once you have field experience, and it frequently carries a pay differential.
• ⚠ Rule 11 applies. Refrigerant regulation is actively changing — see the note on the refrigerant transition. Verify current EPA requirements at epa.gov rather than relying on a course guide.

⚠⚠ Budget for the laboratory fees and the tools — they are substantial and easy to miss

• Daytona State publishes a laboratory fee of roughly $315–$407 for each course in this programme. Across the seven courses documented in this repository that is over $2,500 in fees alone, on top of tuition and before any tools are bought.
• PSAV programmes advertise low tuition, and the fees are where the real cost sits. Ask the programme for a complete cost sheet — tuition, every course fee, tools, textbooks, certification examination fees, uniforms, and boots — before you enrol, not term by term.
• The fees cover consumables that are genuinely expensive — refrigerant, brazing gas and rod, copper tubing, filter driers, and the wear on gauges, recovery machines, and vacuum pumps.
• You will need your own hand tools, and employers expect a technician to arrive with them. Ask for the programme's required tool list early and buy over time rather than all at once.
• Certification examination fees are usually separate from course fees, including EPA 608 and the ESCO assessments.
• Ask about financial aid, Pell eligibility for clock-hour programmes, and Florida workforce funding. Trade programmes frequently have funding routes that degree students do not, including employer sponsorship and apprenticeship arrangements.
• Buy quality on the tools you use daily — gauges, a good vacuum pump, and a decent meter — and cheaply on the rest. Bad gauges produce bad diagnoses.

⚠⚠ This is a PSAV clock-hour course — it carries no college credit

• The leading zero in the course number is the signal. Under the Florida Statewide Course Numbering System, a 0000-level number denotes postsecondary adult vocational (PSAV) instruction, measured in clock hours rather than semester credit hours. These courses carry zero college credit.
• ⚠ A catalog may display the clock-hour figure under a heading that reads "credit hours." It is not credits. When you see a number like 187.5 attached to a 0000-level course, that is hours of instruction — no course is worth 187.5 semester credits.
• PSAV hours do not transfer as college credit to an associate or bachelor's degree, and they do not satisfy general education requirements.
• What they produce is a workforce credential — a career certificate plus, in this programme, a set of industry certifications that employers ask for by name. For a trade like this that is frequently exactly the right outcome, and it is reached far faster and more cheaply than a degree.
• Some institutions offer articulation from a PSAV certificate into a related associate degree. ⚠ These are institution-specific and they change. If you intend to continue to a degree later, get the articulation in writing from the receiving institution before you enrol, not after you finish.
• Financial aid rules differ for clock-hour programmes — eligibility, disbursement, and satisfactory-progress rules are not the same as for credit programmes. Ask the financial aid office specifically about clock-hour programmes.
• Attendance is the currency. Clock-hour programmes track attendance directly and hours missed generally must be made up.

The Daytona State HVAC/R PSAV sequence

These courses form part of one career certificate, taken in sequence. The clock-hour figures and fees are the catalog's own:

⚠ Confirm the current programme structure, total hours, and complete cost with the programme. Florida PSAV programmes are defined by state curriculum frameworks that specify a total length, and the exact course list can change.

⚠⚠ Florida heat is the occupational hazard nobody warns you about

• Attics in a Florida summer routinely exceed 130°F and can approach 150°F, and a large share of residential HVAC work happens in them. Heat stroke is a genuine risk and it is a medical emergency.
• Learn the difference and the response. Heat exhaustion — heavy sweating, weakness, nausea — means stop, get cool, hydrate. Heat stroke — confusion, hot dry skin, no sweating, collapse — means call emergency services and cool the person aggressively while waiting. Confusion in a hot attic is an emergency, not tiredness.
• Hydrate before you are thirsty and keep doing it. Thirst lags dehydration badly in this climate.
• Work attics early. Experienced Florida technicians schedule attic work for the morning for exactly this reason.
• Take breaks in air conditioning, and set a limit on continuous time in a hot space before you go up rather than while you are up there.
• Never work an attic alone without someone knowing where you are and roughly when you will be down.
• Watch each other. The person suffering heat illness is frequently the last to recognise it.
• Roofs, ladders, and confined spaces carry the trade's other physical risks, and heat degrades the judgement you need for all three.

Why this trade is durable employment in Florida

• Air conditioning is not optional here. Florida's cooling demand is year-round and effectively non-discretionary, which makes the work markedly less cyclical than most construction trades.
• The installed base is enormous and ageing, so replacement and service work continues regardless of new construction activity.
• Hurricane and storm recovery generates episodic surge demand.
• New construction in Florida has been sustained, and every unit needs installing and then servicing.
• The workforce is ageing and replacement demand is real — this is a trade with more openings than entrants.
• Commercial refrigeration is the better-paid speciality — supermarkets, restaurants, and cold storage all need it, and fewer technicians are trained for it.
• Emergency and on-call work pays a premium, and in Florida there is a great deal of it in summer.
• The path to self-employment is real in this trade — but see the licensing note, because contracting for yourself is a licensed activity.

⚠⚠ Working as a technician and contracting for yourself are different things in Florida

• You may work as an HVAC technician for a licensed contractor without holding a contractor licence yourself — that is how essentially everyone starts, and this certificate prepares you for it.
• ⚠⚠ Contracting on your own account is a licensed activity in Florida, regulated under Chapter 489, Florida Statutes, through the Department of Business and Professional Regulation and the Construction Industry Licensing Board. Advertising, bidding, or contracting for air conditioning work without the required licence is unlicensed contracting, which is an offence and carries escalating penalties.
• Air conditioning contractor licences are classed by scope — broadly, one class covers unlimited capacity and another is limited to a stated tonnage and heating capacity. Confirm the current classes and their limits with DBPR; do not rely on a course guide's summary.
• Licensure typically requires documented experience, an examination, financial responsibility evidence, and insurance, and the experience requirement is measured in years — which is why the sequence is: certificate, then employment, then licence, not certificate then business.
• Local jurisdictions add requirements — county and municipal registration, permits, and inspections.
• Permits and inspections are required for most installations, and pulling a permit requires a licensed contractor.
• Working under someone else's licence improperly is a serious matter for both parties.
• ⚠ Rule 11 applies. Licensing classes, experience requirements, and fees change. Verify with DBPR (myfloridalicense.com) before making any career or business decision.

ACR0613C is 150 clock hours, offered fall and spring, with a $365.37 lab fee, ACR0561C as prerequisite and ACR0810C as corequisite — the two run together. ⚠ Clock hours carry no college credit.

See this repository's ACR0810C guide for its paired course.