HVAC3D puts a complete, fully interactive commercial HVAC system in the palm of your hand. Walk through a fully modeled 3-story office building in 3D, with transparent walls revealing every mechanical component across all three floors simultaneously -- air handlers, VAV boxes, chillers, boilers, hydronic piping, ductwork, refrigerant lines, controls, and building automation systems, all visible at once. TAP ANY COMPONENT TO LEARN Touch any device in the 3D scene to instantly access its name, ASHRAE and ASME code reference, system function, inspection and testing interval, and common failure modes. Every component is fully documented and linked to the relevant standard. COMPLETE HVAC SYSTEM -- EVERY COMPONENT INCLUDED Air Distribution: Air handling units, VAV boxes with reheat, supply and return ductwork, ceiling diffusers, fan coil units Hydronic: 250-ton chiller, cooling tower, chilled water pumps, 1000 MBH boiler, hot water pumps, expansion tanks, air separators, Y-strainers, balancing valves, 3-way control valves Refrigeration: Rooftop condensing units, split-system air handlers, liquid and suction line risers, thermal expansion valves, filter-driers, sight glasses, solenoid valves, refrigerant leak monitors Controls and BAS: DDC thermostats, VAV controllers, AHU control sequences, BAS network topology, CO2-based demand-controlled ventilation logic Ventilation: Outside air intakes, motorized dampers, energy recovery ventilators, exhaust fans, kitchen exhaust systems, fire and smoke dampers POWERFUL FILTER AND FLOOR CONTROLS Isolate any system with a single tap. Filter by Air Distribution, Hydronic, Controls, Ventilation, or Refrigeration. Switch between all floors or focus on Floor 1, 2, or 3. Toggle wall transparency to see inside the building from any angle and rotate freely in 3D. LEARNING HUB -- 8 TRAINING MODULES Quiz: ASHRAE and ASME code questions covering equipment specs, system design, and commissioning Glossary: Searchable definitions for AHU, VAV, DDC, VRF, CHW, MAU, ERV, EER, SEER, and dozens more terms Guided Tour: Step-by-step walkthrough of a complete cooling and heating sequence from thermostat call to conditioned air delivery Fault Simulator: Diagnose chiller faults, low refrigerant charge, dirty coils, sensor failures, and control logic errors interactively Load Calculator: Cooling and heating load estimation following ASHRAE 2017 Handbook methods Violations: Common HVAC installation, commissioning, and code compliance violations explained with corrections Inspection Checklist: Field-ready checklists for AHU, chiller, boiler, controls, and ventilation systems App Guide: Complete walkthrough of every feature in HVAC3D REFERENCE DOCUMENTS AND DIAGRAMS Floor Plans: Color-coded mechanical plans for all 3 floors with pinch-to-zoom for full detail Riser Diagrams: Chilled water, hot water, outside air, and refrigerant piping risers with complete component symbols and code references Equipment Schedule: Full equipment list with capacities, design parameters, and specifications Calc Sheets: Step-by-step ASHRAE load calculation worksheets GALLERY -- 49 PROFESSIONAL HVAC DIAGRAMS Six categories covering the full discipline: Fundamentals, Air Distribution, Commercial Systems, Industrial and Warehouse, Controls and BAS, and Documentation. Every diagram is full-screen with pinch-to-zoom and swipe navigation. BUILT FOR PROFESSIONALS AND STUDENTS - HVAC engineers and mechanical system designers - Contractors and field technicians preparing for installation or service - Building operators and facility managers understanding their equipment - HVAC students and program instructors - Commissioning agents, inspectors, and plan reviewers Works on iPhone and iPad in portrait and landscape. Dark Mode. No internet connection required.