100+ Free ASE H7 HVAC (Transit Bus) Practice Questions
Pass your ASE H7 — Heating, Ventilation & Air Conditioning (Transit Bus) Certification exam on the first try — instant access, no signup required.
An HVAC controller that resets or loses settings each time the bus is restarted most likely has:
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Key Facts: ASE H7 HVAC (Transit Bus) Exam
50
Total Questions
ASE Transit Bus H7
40
Scored Questions
ASE Transit Bus H7
75 min
Time Limit
ASE Transit Bus H7
55%
A/C System & Component (largest area)
ASE H7 content outline
~$59
ASE Registration Cost
ASE
Prometric
Test Provider
ASE
ASE Transit Bus test H7 is a 50-question exam (40 scored multiple-choice plus 10 unscored research items) with a 75-minute time limit, delivered by Prometric and scored on a criterion-referenced basis set by ASE. A/C System & Component Diagnosis, Service & Repair is by far the largest content area at 55%, followed by HVAC Operating Systems & Related Controls at 25% and Heating & Engine Cooling at 20%. H7 is a professional transit-bus technician certification that counts toward Master Transit Bus Technician qualification and typically requires two years of relevant work experience.
Sample ASE H7 HVAC (Transit Bus) Practice Questions
Try these sample questions to test your ASE H7 HVAC (Transit Bus) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1A transit bus roof-mounted A/C unit will not cool. The technician's first step before connecting manifold gauges should be to:
2On a large transit-bus A/C system, refrigerant charge is most accurately set by:
3Tech A says R-134a and R-1234yf must never be mixed in the same system. Tech B says each refrigerant requires its own dedicated recovery/recycling equipment and service fittings. Who is correct?
4A high subcooling reading at the condenser outlet on a TXV transit-bus system, combined with a high head pressure, most likely indicates:
5Which lubricant is correct for an R-134a transit-bus A/C compressor specified for PAG oil?
6Before opening a transit-bus A/C system for component replacement, the refrigerant must be:
7A transit bus A/C system shows low side and high side both low, with poor cooling and bubbles where a sight glass exists. The most likely cause is:
8The purpose of the receiver-drier in a transit-bus TXV A/C system is to:
9A thermostatic expansion valve (TXV) on a bus evaporator controls refrigerant flow by maintaining a target:
10Tech A says a transit-bus system's high head pressure can be caused by air (non-condensables) in the system. Tech B says non-condensables are removed by a proper deep vacuum during evacuation. Who is correct?
About the ASE H7 HVAC (Transit Bus) Exam
The ASE H7 Heating, Ventilation & Air Conditioning test is part of the ASE Transit Bus certification series for professional transit-bus technicians. It covers large roof-mounted bus A/C systems, refrigerant handling for R-134a and R-1234yf, compressors, condensers, evaporators, TXV and receiver-drier service, hot-water cabin heating loops with booster pumps, and electronic climate controls with driver and passenger zones. Transit-bus HVAC is severe-service work driven by high passenger heat load, frequent door cycling, and long daily run hours.
Assessment
40 scored multiple-choice (50 total incl. 10 unscored) (official ASE); this practice bank is 100 selected-response items
Time Limit
75 minutes
Passing Score
Criterion-referenced (set by ASE)
Exam Fee
~$59 (ASE registration) (ASE (National Institute for Automotive Service Excellence))
ASE H7 HVAC (Transit Bus) Exam Content Outline
A/C System & Component Diagnosis, Service & Repair
Performance temperature testing, manifold-gauge diagnosis, superheat and subcooling, refrigerant charge by weight, recovery/recycle/recharge, leak detection and UV dye, compressors and clutches, condensers, evaporators, TXV, receiver-drier, PAG/POE oil, and R-134a/R-1234yf handling on large roof-mounted bus units.
Heating & Engine Cooling Systems Diagnosis, Service & Repair
Hot-water heating loops, heater cores, heater control (water) valves, electric coolant booster pumps, coolant specification and bleeding, engine thermostat, pressure caps, and cooling-system pressure testing as they affect cabin heat and defrost.
HVAC Operating Systems & Related Controls Diagnosis & Repair
Electronic climate controllers, blend-air dampers and actuators, cabin and ambient temperature sensors, blower speed controls, fresh-air/recirculation, defrost, driver versus passenger zones, scan-tool bidirectional testing, fault codes, and controller configuration and calibration.
How to Pass the ASE H7 HVAC (Transit Bus) Exam
What You Need to Know
- Passing score: Criterion-referenced (set by ASE)
- Assessment: 40 scored multiple-choice (50 total incl. 10 unscored) (official ASE); this practice bank is 100 selected-response items
- Time limit: 75 minutes
- Exam fee: ~$59 (ASE registration)
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
ASE H7 HVAC (Transit Bus) Study Tips from Top Performers
Frequently Asked Questions
How many questions are on the ASE H7 exam?
The ASE Transit Bus H7 test has 50 total questions, of which 40 are scored multiple-choice and 10 are unscored research items that do not count toward your result. This free practice bank provides 100 selected-response questions so you can practice well beyond the live exam length.
How long is the ASE H7 exam and how is it scored?
You have 75 minutes to complete H7. ASE scores its certification tests on a criterion-referenced basis, meaning the passing standard is set by ASE rather than a fixed published percentage or a curve against other candidates.
What does ASE H7 cover?
H7 covers three content areas for transit-bus HVAC: A/C System & Component Diagnosis, Service & Repair, Heating & Engine Cooling Systems, and HVAC Operating Systems & Related Controls. The A/C area is the largest at 55%, reflecting the large roof-mounted units, refrigerant handling, and refrigeration-cycle diagnosis these buses require.
Is ASE H7 a professional certification?
Yes. ASE H7 is part of the professional ASE Transit Bus technician series and counts toward Master Transit Bus Technician qualification. It is intended for working transit-bus technicians and typically requires two years of relevant hands-on work experience, with up to one year substitutable by approved training.
How much does ASE H7 cost and where is it taken?
Plan for roughly $59 in ASE registration costs; confirm the current amount with ASE before registering. Initial ASE certification tests, including Transit Bus H7, are delivered at Prometric test centers.
What HVAC-specific topics should I focus on for H7?
Focus on refrigerant charge by weight, recovery/recycle/recharge for R-134a and R-1234yf, superheat and subcooling interpretation, manifold-gauge and performance temperature testing on large roof units, hot-water heating loops with booster pumps, and electronic climate controls with blend-air actuators and driver/passenger zones.