About CRD Exam Prep
An independent practice platform for the Certified Residential Geothermal Designer (CRD) exam - real questions across every exam domain, each with a plain-language explanation.
What's on the CRD exam
The Certified Residential Geothermal Designer (CRD) exam is organized into 9 knowledge domains. Here is what it covers:
- Ground Source Heat Pump Benefits
- System Components
- Heat Pump Types
- Design Process
- Energy Requirements
- Load Calculations
- Parameters that affect different types of heat pump performance, site, geology and soil conditions
- Heat pump and pipe design
- Economics of design
Every practice question on this site is organized across these 9 domains, so your study tracks the real exam structure instead of guesswork. As you answer, the per-domain analytics surface the areas still costing you points, so your review goes where it moves your score.
What we believe good exam prep looks like
Realistic practice beats passive reading. Every question is written to mirror the style and difficulty of the real exam, with a clear explanation of why the right answer is right and the others aren't.
Your weak spots should find you. Domain analytics, mistake review, and re-drilling are built in, so study time goes where it moves your score.
Pricing should be simple. One payment for a fixed access window matched to your exam date. No subscription, no auto-renewal, and 10 free questions to try before you spend anything.
Get in touch
Questions, feedback, or something not working? Email support@boardmentor.study - candidate messages are read and answered.