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Idaho HVAC Contractor Exam — Practice Test Guide

What This Practice Exam Covers

The Idaho HVAC Contractor Exam is a 100-question, 240-minute test administered by the state licensing authority. A passing score is 70% — meaning you must answer at least 70 questions correctly. The exam spans 13 topic areas drawn from the Contractor's Business and Law Reference Manual published by Idaho's Division of Occupational and Professional Licenses (DOPL).

This site offers two practice options:

• Free practice exam: 10 questions per attempt, pulled from a limited question pool. You can retake it as many times as you like. It's the right starting point to get a feel for question style, phrasing, and difficulty before committing to deeper prep.

• Full practice exam (paid): 100 questions, 240-minute time limit — an exact structural mirror of the real exam. Questions are drawn from a pool of 490+ items, so every attempt presents a different combination. No two sessions are identical, which means repeated attempts continue building knowledge rather than testing memory of a fixed question set.

Start with the free exam to benchmark yourself, then use the full exam for serious, timed practice.

What You'll Be Tested On

Sections 1–4 (7 items total): These sections cover business fundamentals and Idaho licensing. Section 1 (1 item) addresses why contracting businesses fail — cash flow mismanagement, poor project selection, and external market forces. Section 2 (2 items) covers starting a business: entity structures, employer tax obligations, and permit and license requirements at federal, state, county, and local levels. Section 3 (2 items) goes deeper on Idaho-specific entity law — the liability exposure of sole proprietors and general partners, how LLPs and LPs differ in partner liability, LLC naming and registration rules, and the tax treatment distinctions between S Corps, C Corps, and Professional Service Corporations. Section 4 (2 items) focuses on DOPL itself: its regulatory mission, which boards it administers, who must hold a license in Idaho, consequences of unlicensed work, and documentation and fee requirements for applicants.

Section 5 — Accounting and Finance (20 items): This is one of the heaviest sections on the exam. Questions test your ability to read and interpret financial statements (balance sheet, income statement, cash flow statement), distinguish cash from accrual accounting under GAAP, and apply financial ratios correctly. You must know liquidity ratios (including the working capital ratio), efficiency ratios such as the inventory ratio, leverage/safety ratios, and profitability ratios. Depreciation is tested specifically: straight-line versus MACRS, when depreciation begins and ends, and the IRS Section 179 deduction. Project accounting is also tested — you must know when to use the completed contract method versus the percentage of completion method, including the income limitations and uncertainty conditions that govern each. Equipment acquisition (rent vs. lease vs. purchase) appears here as well. Source: Contractor's Business and Law Reference Manual, Section 5: Accounting & Finance.

Section 6 — Employment Law (20 items): Expect detailed questions on federal anti-discrimination statutes: ADEA (age 40+), ADA (disability definition, reasonable accommodation, undue hardship), Title VII (including religious discrimination accommodation), EPA, GINA, and the Pregnancy Discrimination Act. FMLA questions focus on the 50-employee threshold, 12-month eligibility, qualifying reasons, and military caregiver leave. FLSA questions target overtime calculation and executive, administrative, professional, and computer professional exemptions. Idaho-specific items test wage payment law (Idaho Code §45-608 through §45-613), new hire reporting deadlines, and recordkeeping obligations. Federal contractor wage laws — Davis-Bacon, the Service Contract Act, Walsh-Healey, and the Copeland Anti-Kickback Act — are also tested. Source: Contractor's Business and Law Reference Manual, Section 6.

Section 7 — Insurance and Bonding (20 items): Another 20-item section. Questions cover the full range of contractor insurance types: commercial general liability, completed operations, builders risk, automobile, pollution liability, professional liability, and employment practices liability. Workers' compensation is tested in depth — Idaho employer obligations, the corporate officer exemption, the casual employment exemption, penalties for non-compliance, and how to obtain coverage. Unemployment insurance questions address experience rating, new employer standard rates, FUTA, reportable versus nonreportable wages (tips, 401(k) contributions, cafeteria plans, disability pay), and independent contractor classification. Surety bonds — bid bonds, performance bonds, and payment bonds — are tested along with the Miller Act's requirements for federal projects. Source: Contractor's Business and Law Reference Manual, Section 7: Insurance.

Section 8 — Estimating and Bidding (7 items): Questions distinguish open (hard) bids from closed bids, cover public works bidding rules, and test knowledge of estimate types: conceptual, preliminary, and detailed. For detailed estimates, you must know all six components — quantity survey/takeoff, materials pricing, labor pricing, equipment pricing, subcontractor pricing, and general expenses — and how each is developed. Source: Section 8: Estimating & Bidding.

Section 9 — Contracts (8 items): Questions cover the essential elements of a valid contract, Idaho's statutory retention limits, Statute of Frauds written-agreement requirements, contract types (lump sum, unit price, cost plus, time and materials, incentive/guaranteed maximum), required and optional contract components, and breach of contract remedies. Source: Section 9: Contracts.

Section 10 — Project Management (10 items): You must know the five project management phases (initiation, planning, executing, monitoring/controlling, closing), Critical Path Method calculations (float/slack time, earliest and latest start dates), Gantt chart interpretation, project staffing roles, and cost control procedures including variance detection, cost codes, and purchase orders. Source: Section 10: Project Management in Construction.

Section 11 — OSHA Safety and Recordkeeping (5 items): Questions test OSHA Forms 300, 300A, and 301; the 10-or-fewer-employee recordkeeping exemption; the 8-hour fatality and multiple-hospitalization reporting rule; required workplace posters; and OSHA cooperative programs (VPP, SHARP, OSHA Challenge, Alliance Program, Strategic Partnership Program). Source: 29 CFR 1904.1(a)(1); Section 11.

Sections 12–13 (3 items total): Section 12 (1 item) covers Idaho sales and use tax for contractors, independent contractor versus employee classification using the right-to-control test, income tax filing by entity type, and contractor sales tax exemptions. Section 13 (2 items) addresses mechanic's and materialmen's lien rights under Idaho Title 45 — filing deadlines, required contents, lien priority, enforcement periods, release by surety bond, and the general contractor disclosure requirement for residential contracts over $2,000.

Worked Sample Questions

Question 1 — Equipment Acquisition (Section 5)

You are a small electrical contractor and need a specialized trenching machine for a one-week underground conduit installation. Your own trencher is currently in the shop for major repairs. Which equipment acquisition method is most appropriate?

A. Rent the trenching machine for the duration of the project
B. Purchase a new trenching machine for permanent use
C. Wait until your own trencher is repaired before starting the project
D. Enter into a long-term lease agreement for the trenching machine

Correct Answer: A

Renting is the right choice for short-duration needs and as a stopgap when owned equipment is unavailable. Unlike leasing, renting gives the contractor full flexibility over return timing with no early-return penalty. The rental company carries maintenance and repair responsibility. Purchasing makes financial sense only when long-term use justifies the capital outlay, and waiting would simply delay a project unnecessarily.
Source: Contractor's Business and Law Reference Manual, Section 5: Accounting & Finance — Leasing, Purchasing, or Renting Equipment — Rent

Question 2 — Service Contract Act (Section 6)

You just won a federal service contract worth $5,000 to provide maintenance at a government building. Under the McNamara-O'Hara Service Contract Act, what wage obligation applies?

A. Pay at least the federal minimum wage only
B. Pay the Davis-Bacon prevailing construction wage rate
C. Pay no less than the prevailing wage rates and furnish fringe benefits found prevailing in the locality
D. Set wages at any rate as long as employees agree in writing

Correct Answer: C

The Service Contract Act applies to federal service contracts exceeding $2,500. It requires contractors to pay service employees the prevailing monetary wage rates and provide the fringe benefits prevailing in the locality — or match a predecessor contractor's collective bargaining agreement rates. Option A (minimum wage only) does not satisfy SCA requirements. Option B (Davis-Bacon) applies to federal construction contracts, not service contracts.
Source: Contractor's Business and Law Reference Manual, Section 6 — McNamara-O'Hara Service Contract Act (SCA)

Question 3 — Completed Operations Insurance (Section 7)

Which type of insurance protects a contractor against claims for injuries or property damage suffered by third parties after the contractor has finished the work?

A. Commercial general liability insurance
B. Professional liability insurance
C. Completed operations insurance
D. Builder's risk insurance

Correct Answer: C

Completed operations insurance is liability coverage specifically triggered by claims arising after work is finished. Commercial general liability covers incidents occurring during construction. Builder's risk covers the structure under construction against physical loss, and professional liability covers errors in professional services. The post-completion timing is the key distinguishing fact the exam tests here.
Source: Contractor's Business and Law Reference Manual, Section 7: Insurance — Completed Operations

How to Read Your Score

The passing threshold is 70% — 70 correct answers out of 100. Treat your first practice attempt as a diagnostic, not a verdict. A first score in the 55–65% range is common and tells you which sections need focused work, not that you are unready to pass.

After each full practice attempt, review your results by topic. If Section 5 (Accounting and Finance, 20 items) or Section 7 (Insurance, 20 items) is pulling your score down, those sections deserve priority attention — together they represent 40% of the real exam. A weak score in Section 6 (Employment Law, 20 items) is equally costly.

Be honest with yourself about scores near 70%: passing practice narrowly usually means the real exam's differently worded questions will expose gaps. Most candidates benefit from reaching 80%+ on practice before sitting for the real test. Use the 490+ question pool in the full exam to keep rotating through fresh questions — repeating the same 10-question free set will not adequately prepare you for the full 100-question format.

Where Candidates Lose Points

Section 5 financial ratio questions trip up candidates who confuse liquidity ratios with profitability ratios or misapply the working capital formula. The exam expects you to distinguish the current ratio from the debt-to-equity ratio without prompting.

Completed contract vs. percentage of completion is a classic trap. Candidates pick the wrong method because they overlook the income limitation condition or the requirement that costs and progress be reliably measurable under the percentage of completion method.

Section 6 threshold numbers are frequently missed. FMLA coverage applies at 50 or more employees; the Service Contract Act threshold is $2,500; Davis-Bacon applies to federal construction contracts over $2,000. Confusing these thresholds costs points on multiple questions.

Section 7 reportable vs. nonreportable wages for unemployment insurance purposes catches candidates who assume all compensation is reportable. Tips, 401(k) contributions, cafeteria plan benefits, and courtesy discounts each have specific treatment that the exam tests directly.

OSHA Section 11 questions on recordkeeping exemptions are often missed because candidates forget the 10-or-fewer-employee rule or misidentify which OSHA form serves which purpose (300 vs. 300A vs. 301).

Time management is a real factor. At 240 minutes for 100 questions, you have 2.4 minutes per question. Candidates who over-think Section 5 calculation questions often rush through Section 10 project management questions and make careless errors on CPM float calculations.

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