Starter — $5 CAD per month
Start with a 30-day free trial. Includes unlimited Design Mode and Simulation Mode calculations, interactive Plant Drawing, pipe selections and sizing information, with no credit card required for the trial.
Hydronic System Simulator by Hydronics IQ
Design simulation for hydronic professionals.
A browser-based hydraulic separator simulator built for contractors and wholesale designers. Prove plant logic, size pipes, and test part-load scenarios in seconds—not hours.
Built by designers, for designers
See how heat loss inputs operate through the boiler plant as you design control points. Model multiple loads at different temperatures, review boiler flow rates and temperatures, modify emitter designs in real time, and deliver designs faster.
Design Mode
Enter design loads, select a boiler plant, and resolve hydraulic separator flow, return temperature, condensing efficiency, boiler delta T, and pipe sizing.
Simulation Mode
Test part-load conditions, stage boilers manually, check priority conflicts, and verify low-flow conditions before installation.
Supported hydronic configurations
Direct reset, thermostatic mixing valve reset, electronic mixing, fixed three-way mixing valves, fixed setpoint loads, and indirect domestic hot water loads.
Simple, honest pricing
Pro — $47.50 CAD per month or $475 CAD per year
Includes everything in Starter plus saved project files and simulation scenarios, project information, professional reports, and Plant Drawing printing and PDF output. GST applies; cancel anytime.
Common questions
Does this replace heat loss software?
No. Bring your Manual J heat loss numbers; the simulator focuses on plant-side hydraulics, pipe sizing, separator physics, and equipment staging.
Can I save my designs?
Pro users can save project files, client information, and named part-load scenarios. Starter designs are session-based.
What does the simulator not do?
It does not calculate building heat loss or draw floor plans. It verifies hydronic plant physics from the loads you provide.
See it before you build it.
Model how a hydronic system behaves before a pipe is cut.