Hands-on 3D simulator training for HVAC technicians preparing for the FDNY refrigeration certification. Practice on real centrifugal and reciprocating chillers — anywhere, anytime.
Trusted by 1,200+ HVAC technicians training for FDNY certification
We build interactive 3D chiller simulators that prepare HVAC technicians for the toughest licensure exams in New York. Instead of memorizing diagrams, our students disassemble, inspect, and reassemble real centrifugal and reciprocating systems — virtually.
Built by working engineers. Maintained by educators. Trusted by the field.
98%
Pass rate
2+
Chiller types
24/7
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From refrigeration cycle fundamentals to advanced troubleshooting. Sequenced lessons aligned with FDNY Q-99 topics.
Browse modules →Timed mock exams with identification and multiple-choice questions. Follow-up prompts dig into the "why" behind every answer.
Take a practice test →Rotate, disassemble, and identify every component of centrifugal and reciprocating chillers. Built on real engineering schematics.
Open the trainer →Step through the impeller, condenser, evaporator, and expansion valve. Every part is labeled, every flow is animated. Stuck on a component? Tap it and walk through a guided micro-lesson before returning to your exam.