Red Seal ReadyCANADAHEAVY DUTY EQUIPMENT TECHNICIAN · CANADA
A separate app with 1,500+ local bilingual questions, detailed explanations, and dedicated tracks for engines, electrical controls, fluid power, and electrified equipment.
Free download
Heavy Duty Mechanic Red Seal is an independent Heavy Duty Equipment Technician Red Seal exam prep app for iPhone, iPad and Android. It has 1,500+ original questions in English and French, with an explanation for every choice, and timed 135-question mocks. The download is free with 50 questions and a 25-question sample mock; one C$19.99 purchase unlocks everything. No subscription.
Heavy Duty Equipment Technician Red Seal exam: format, pass mark and how to prepare · Heavy Duty Equipment Technician practice test: 25 free questions, online or PDF · Prep options compared
The download is free and includes 50 questions and a 25-question sample mock. One C$19.99 in-app purchase unlocks the full app for this trade. There is no subscription.
Prices are shown in CAD. Applicable taxes may be added at checkout by the App Store or Google Play.Yes. It is available for iPhone, iPad and Android on the App Store and Google Play.
Yes. Every question and explanation is available in English and French.
No. The full app works offline and needs no account. Answers, progress and your study plan stay on your device.
No. Red Seal Ready is an independent study app by Certloom Learning. It is not affiliated with the Red Seal Program, ESDC, the CCDA or any provincial apprenticeship authority.
Try a short scored practice set with explanations.
Looking for heavy duty mechanic Red Seal exam prep, heavy equipment technician practice questions or HDET study help? This trade covers engines, electrical systems, drivetrains, hydraulics and equipment attachments. Ontario uses Heavy Duty Equipment Technician (421A). Heavy equipment operator and truck and transport mechanic are separate trades.
Official Ontario trade profile (421A) · What Ontario code 421A means, with the other trade codes · Challenge the 421A exam in Ontario without an apprenticeship · Trade qualifier routes in other provinces
Choose the resources that fit your next study session. The demo and app are independent study aids; use official sources for exam rules.
25 reviewed bilingual questions for your trade, with answers and explanations, in your browser. No account. A timed 10-question demo drawn from the same set is also available.
Open the 25 free practice questions1,500+ bilingual questions, 135-question mock exams, interactive trade exercises and offline progress tracking. Free download on iPhone, iPad and Android with 50 free questions; one C$19.99 in-app purchase unlocks the full app. No subscription.
Prices are shown in CAD. Applicable taxes may be added at checkout by the App Store or Google Play.Read the exam breakdown and Red Seal Program resources free of charge. Your provincial or territorial authority determines eligibility and registration.
Official exam informationOntario details come from Skilled Trades Ontario, checked . Other provinces and territories set their own rules, so confirm yours with your apprenticeship authority.
135 multiple-choice questions in four hours, with a 70% pass mark. Each question has four choices and one correct answer, according to the Red Seal Program’s exam preparation guide. The exam guide on this site breaks the questions down by work area.
Yes. The Red Seal exam preparation guide asks you to confirm your exam language (English or French) when you register. In Ontario, Skilled Trades Ontario says exams are available in English or French only. Every question in the app is available in both languages.
In Ontario you write it in person at an exam centre. Skilled Trades Ontario delivers certifying exams itself, and Red Seal exams there may be written on a computer through the rsexam.ca system with an invigilator present. Your exam confirmation email says whether your location uses it. In other provinces, check with your apprenticeship authority.
Skilled Trades Ontario lists an exam fee of $150 plus HST, paid through the STO Portal. Apprentices who completed an Ontario training agreement do not pay it for their first attempt. Experienced workers who apply to challenge the exam also pay $235 plus HST for the Trade Equivalency Assessment. Other provinces set their own fees.
30 days. Skilled Trades Ontario says there is a mandatory 30-day waiting period before you can retake an exam you did not pass, and you pay the exam fee again before rebooking. Rewrite rules differ between provinces and territories, so confirm yours with your apprenticeship authority.
Yes, through Skilled Trades Ontario’s Trade Equivalency Assessment. You need verifiable proof of the trade’s skills and experience at least equal to the full apprenticeship, school hours included (7,000 hours for 421A). If you are approved, you can write the certifying exam, and after passing you pay a fee to receive the Certificate of Qualification.
Sources: Red Seal Program: exam preparation guide · Skilled Trades Ontario: exam scheduling · Skilled Trades Ontario: finish an apprenticeship · Skilled Trades Ontario: Trade Equivalency Assessment
Heavy Duty Equipment Technician Red Seal exam: format, pass mark and how to prepare · Ontario trade codes explained
How to challenge the 421A exam in Ontario: eligibility, fees and steps · Trade qualifier routes by province · Red Seal exam rules by province: rewrites and fees
INSIDE THIS APP
Android tabletThe HDET progress view combines readiness evidence, recommended work areas and the mistake journal so the learner always has a concrete next step.
CAN-BUS SAMPLE
The documented two-terminator network should measure about 60 Ω. One branch has intermittent communication.
Choose confidence first.
Swipe to see every screen; tap one to enlarge it.App previews. Check the store links above for available platforms.
CURRENT OFFICIAL ALLOCATION
The official exam has 135 questions across 41 tasks. The app includes timed 135-question mock exams on iPhone, iPad and Android following this allocation.
TRANSPARENCY
Automated checks cover all 1,500+ identified records, answer keys, calculations, source bindings, bilingual revisions and answer cues. Those structural and revision checks do not claim that every record represents a substantively distinct learner concept. AI-created and AI-reviewed content is neither official exam content nor workplace instruction; verify safety-critical information against current authorities.