OK HVAC Contractor study plan

Map the four exam domains against your current knowledge by writing a one-page self-audit scoring each domain 1-5 and listing the specific subtopics you cannot yet explain aloud

Outline the HVAC mechanical trade scope covered by Oklahoma mechanical licensing: identify which tasks (load calculation, duct sizing, refrigerant piping, equipment installation, gas piping connection, ventilation) fall under the license and which require a separate trade

Build a personal glossary of 30 mechanical trade terms (ton of refrigeration, sensible and latent heat, static pressure, superheat, subcooling, AFUE, SEER2, HSPF2, manual J/S/D) with a one-sentence definition you wrote yourself

Trace the inspection sequence for a residential HVAC changeout from permit application through rough-in, pressure test, evacuation, startup, and final inspection, and note at which steps an inspector can red-tag the job

Solve at least 15 load and airflow practice problems by hand (sensible/latent heat, CFM from Btu/h and temperature difference, duct velocity, equivalent length for fittings) and show every unit conversion

Explain aloud, without notes, how superheat and subcooling readings diagnose charge and metering-device problems, then write the explanation in under 150 words

Compare combustion air requirements, flue venting categories, and condensate management for natural gas and propane furnaces and list the failure modes an inspector commonly cites

Identify the safety devices required on a forced-air furnace and describe the test an inspector performs on each (limit switch, flame rollout, flame sensor, pressure switch, high-limit)

Assemble a citation index of the mechanical code chapters that govern duct construction, clearances to combustibles, appliance venting, refrigeration piping, and ventilation rates, recording section numbers and a paraphrase of each requirement

Apply clearance-to-combustible and access-panel requirements to three sketched equipment-room layouts and mark each layout pass or fail with the governing rule

Summarize refrigerant safety classification, leak detection, and safe handling obligations in a two-page note that you could hand to an apprentice

Draft a 10-item pre-inspection checklist that a crew could use before calling for rough-in and final inspections, each item tied to a code requirement

Build a timeline of Oklahoma mechanical trade licensing: the licensing authority, license and permit categories, application steps, examination requirement, and renewal cycle, citing the controlling statute or rule for each step

Distinguish the responsibilities of the license holder, the qualifying party, and the employing contractor, and write out what happens to a license when the qualifying party leaves the business

List the grounds for disciplinary action, the complaint and hearing process, and the penalties available to the licensing authority

Identify which work is exempt from licensing and which local jurisdictions impose additional permit or registration requirements

Draft the compliance calendar a small HVAC company needs: license renewals, insurance certificate expirations, permit closeouts, continuing education deadlines, and lien notice windows

Explain Oklahoma contractor licensing and insurance requirements and how a lapsed license or certificate of insurance affects the ability to pull permits and enforce a contract

Work through five short scenarios (unlicensed subcontractor, expired bond, unpermitted changeout, unlicensed helper doing refrigerant work, advertising without a license number) and state the violation and the correct action

Summarize consumer protection and contract requirements that apply to residential HVAC work, including written contract elements, cancellation rights, and lien and notice obligations

Assemble the continuing education requirement for Oklahoma mechanical license renewal: hours, approved subject areas, acceptable providers, recordkeeping, and consequences of a shortfall

Build a 40-question practice set weighted 25/25/25/25 across the four domains and take it closed-book, logging your score by domain

Review every missed question from the practice set and write a corrected explanation for each, citing the rule or code section

Outline the business records a mechanical contractor must retain and for how long, covering permits, inspections, payroll, safety training, and refrigerant handling records

Work through 20 code-application scenarios that combine duct, venting, clearance, and ventilation requirements, and write the governing rule for each answer

Re-solve the week 2 calculation set from memory and compare results, isolating any unit-conversion errors that recur

Teach two topics aloud (venting categories and refrigerant safety) in five minutes each, recording yourself and noting where you hesitated

Compile a one-page list of the safety and code facts you still cannot recall cold, ranked by how often they appear in practice

Take two full-length timed practice exams under test conditions and record domain-by-domain scores to confirm every domain clears a self-set passing threshold

Drill the ranked weak-fact list from week 7 until each item can be stated from memory with its citation

Re-read your licensing fact sheet, compliance calendar, and code citation index and update anything that changed or that you now understand differently

Write a one-page exam-day plan covering timing per question, flag-and-return strategy, and how you will handle calculation questions