SHI Study Guide 2026
Everything you need to pass the SHI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 SHI Exam Format at a Glance
📚 SHI Topics to Study (63)
✍️ Sample SHI Questions & Answers
1. During final inspection, the inspector finds that the pressure relief valve discharge pipe terminates inside the mechanical room wall cavity. What is the quality concern?
PRV discharge pipes must terminate in a visible, safe location so that activation can be detected and scalding fluids are safely directed away from occupants and structure.
2. A technician uses a digital manifold gauge set connected via Bluetooth to a tablet. What advantage does this provide over analog gauges?
Bluetooth-connected digital manifolds allow real-time data logging on a tablet, improving documentation accuracy and diagnostic efficiency.
3. Which pipe material is generally NOT recommended for solar thermal collector loop piping due to potential degradation at high temperatures?
Standard PEX can soften and fail at the high stagnation temperatures (above 200°F/93°C) reached in solar collector loops; high-temperature PEX-a may be acceptable at reduced pressures but must be verified.
4. What is the first step in risk assessment for Solar Heating Installer Certification professionals?
Risk assessment begins with systematic identification of hazards and vulnerabilities specific to the Solar Heating Installer Certification practice context.
5. Which digital communication protocol is most commonly used by modern solar differential controllers to integrate with building automation systems (BAS)?
Modbus TCP/IP and BACnet are industry-standard protocols for HVAC and building automation integration, widely supported by solar thermal controllers.
6. An installer discovers that a prior contractor connected a copper collector loop directly to a galvanized steel storage tank without a dielectric fitting. What long-term risk does this create?
Copper and galvanized steel form a galvanic couple in the presence of water or glycol; the steel (less noble) corrodes rapidly, risking leaks and tank failure.