HVAC · 3D practice
Troubleshoot a cooling system
Practice the checks behind common cooling faults, from safe power-down to airflow and refrigerant readings.
Start practicing$49 / 30 days · One payment
Repeat the steps
What you practice
- Verify power is off before service.
- Check fuses, capacitors, contactors and controls.
- Read pressures and diagnose airflow, drainage and refrigerant faults.
Inside the trade
Your lessons
Follow the guide, then put the steps into practice.
Safe power-down and verify dead
Test and replace disconnect fuses
Test and replace the run capacitor
Check and replace the contactor
Read amp draw with a clamp meter
Change the air filter
Thaw a frozen coil and fix the airflow
Clear the drain and test the float switch
Gauges: hook up and read pressures
Work safely on an A2L (R-454B / R-32) unit
Gauges: superheat and subcooling check
Find a leak, repair, recharge
Thermostat and 24 V check
Clean the condenser coil
Before you start
Common questions
What will I practice in HVAC?
Practice the checks behind common cooling faults, from safe power-down to airflow and refrigerant readings.
What does the pass cost?
The HVAC pass costs $49 USD for 30 days of access to this trade. It is one payment with no subscription or automatic renewal.
How do I start?
Choose Start practicing, sign in to Portfloor and buy the HVAC pass from the player. Return using the same account to open your practice.
Can I use a phone or a computer?
Yes. The practice runs in a modern browser on a phone or computer. A larger screen gives you more room to see the workspace.
Does this replace hands-on training or certification?
No. Portfloor is a practice supplement. It does not issue a trade license or operator certification, and it does not replace supervised training on real equipment.
Does one pass include other trades?
This pass covers HVAC. Each other trade has its own 30-day pass.
HVAC · 30-day pass
Make time to practice.
$49 USD for this trade. One payment. No automatic renewal.