Refrigerant Logic Without Guessing
Interpret subcooling, superheat, and saturation relationships in context, including mixed symptoms that look normal at first glance.
System Diagnostics
AC Diagnostics for Real-World Cooling Calls
When the unit runs but comfort is still poor, ACLogics helps technicians isolate the real failure path instead of swapping parts by guesswork.
ACTIVE_SCAN_MODE
ANALYZING_SYSTEM_DATA...
> DIAGNOSIS_READY
> CONFIDENCE: 98.4%
> VIEW_STEPS_BELOW
> CONFIDENCE: 98.4%
> VIEW_STEPS_BELOW
Built for Precision
Everything you need to diagnose with confidence and accuracy.
Airflow and Heat-Transfer Validation
Walk through static pressure, delta-T, and fan performance checks to separate duct faults from refrigeration faults.
Electrical Path Confirmation
Verify contactor, capacitor, and compressor circuits in sequence so intermittent failures are easier to catch.
The Three-Step Workflow
01
Capture the Baseline
Enter symptoms, operating mode, ambient conditions, and your first readings from the call.
02
Follow Priority Tests
The assistant orders checks from fastest to highest value so you can confirm or eliminate root-cause branches quickly.
03
Confirm and Document
Get a clear fix path and produce a customer-ready report that explains what failed and why.
Simple, Transparent Pricing
Built for independent experts.
Solo Plan
$15 /month
Billing: Perfect for trying it out with a small client base
- AI-Powered Rapid Troubleshooting
- 90-day searchable history
- Professional PDF reports
- Zero-Signal Offline Mode
- 500K tokens per month
Most popular
Standard for growing HVAC shops.
Team Plan
$25 /month /technician
Billing: Scalable solutions for growing teams
- Everything in Solo Plan
- Centralized team management
- Shared diagnostic history and data
- Priority customer support
- 1M tokens per month
Strategic oversight & operations.
Insight Plan
$89 /month /technician
Billing: For leadership and owners
- Everything in Team Plan
- On-Demand Master Tech Consultation
- Enterprise Operations Command Center
- Operational trend reporting
- Custom API & Workflow Integration
- 4M tokens per month
Frequently Asked Questions
The system cools well for 10 minutes, then supply air temperature rises. What should I check first?
Start with airflow under load before touching charge. A blower speed mismatch, dirty coil, or static-pressure issue can mimic low charge once coil temperature shifts.
I have low suction pressure but superheat is not extreme. Is this always a refrigerant shortage?
No. Metering restrictions, evaporator airflow limits, or a partially closed liquid line can produce the same pattern. Use saturation and temperature relationships together.
Head pressure is high only in the late afternoon. Is that a condenser problem or overcharge?
Treat it as a load-dependent fault first. Check condenser airflow, fan cycling logic, and coil cleanliness under peak ambient, then validate charge after airflow is confirmed.
Should technicians replace weak capacitors before measuring full operating conditions?
Measure first unless safety or startup risk demands immediate replacement. Baseline readings preserve evidence that helps confirm whether the capacitor is root cause or a secondary symptom.