KONGRA LLC · HVAC / Refrigeration
HVAC & Refrigeration Diagnostics
HVAC and refrigeration diagnostics, repair and maintenance across the Bay Area. Refrigerant work is performed by certified contractors coordinated by KONGRA. Send the model and symptoms so we can confirm the visit, repair scope and responsible provider.
- Temperature systems
- Controls & airflow
- Scope confirmed before work
Choose your next step
Find the right diagnostic path.
Choose the system involved. We review the equipment, symptoms and site requirements before scheduling.
Cooling & refrigeration
Walk-ins, reach-ins, ice machines and other temperature-controlled equipment.
Refrigeration serviceHVAC & controls
Air-conditioning faults, heat pumps, furnace controls and equipment troubleshooting.
Heat pump diagnosticsPlanned maintenance
An equipment-specific assessment and agreed maintenance scope for your facility.
Maintenance optionsWhat we diagnose
Related repair services
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Frequently asked questions
Do you do full HVAC installations?+
KONGRA provides diagnostics, repair and maintenance. Installation requests are scoped separately, with the responsible contractor and required qualifications confirmed before a quote is approved.
Do you handle refrigerant work?+
Yes. Refrigerant work is performed by certified contractors coordinated by KONGRA. The task, responsible provider and price are agreed before work begins; repairs and refrigerant work are quoted separately from the diagnostic visit.
Do you diagnose electrical faults?+
Yes. KONGRA diagnoses equipment-control and electrical faults within its service scope. Appropriately qualified independent contractors are coordinated when regulated work requires them; the scope is confirmed before work begins.
Before your visit
Tell us what the system is doing.
Share the make, model, displayed temperature or fault code, symptoms and your city. Include photos only where safely accessible.