Refrigerant Leak Detection & Repair
Find the source of refrigerant loss before it becomes a larger failure.
Low refrigerant is normally a symptom of a leak, not routine equipment consumption. Endeavor uses system performance data, electronic detection, nitrogen pressure testing and other appropriate methods to locate the source, explain the findings and determine whether repair is practical.
EPA 608 Universal · Licensed · Bonded · Insured
Warning Signs
Symptoms that may indicate a refrigerant problem.
Refrigerant leaks can produce symptoms that resemble airflow, electrical or control problems. A proper diagnosis is necessary before determining the cause.
Performance symptoms
- The system runs continuously but does not reach temperature
- Cooling or heating output has gradually decreased
- The indoor coil or refrigerant piping freezes
- Supply-air temperature is inconsistent
- Energy use increases without a clear explanation
Equipment indications
- Low operating pressure or abnormal system performance
- Oil residue around fittings, valves or coils
- Previous refrigerant additions without a confirmed repair
- Repeated low-pressure or system fault codes
- Visible corrosion or damage to refrigerant components
Our Process
A methodical approach from diagnosis through final verification.
System Assessment
We review the reported symptoms, service history, equipment condition, airflow, controls and operating performance.
Testing Plan
The appropriate testing method is selected based on the system, refrigerant circuit, accessibility and suspected leak location.
Leak Detection
Electronic detection, bubble solution, nitrogen pressure testing or UV dye may be used when appropriate for the application.
Zone Isolation
Multi-zone and concealed-piping systems may require individual circuits or line sets to be isolated and tested separately.
Repair
Once located, the leak and available repair options are reviewed. Repairs may involve fittings, valves, tubing or component replacement.
Evacuation & Verification
After an approved repair, the system is pressure tested, evacuated, recharged to specification and tested for proper performance.
Detection Methods
Different systems require different testing strategies.
No single testing method is appropriate for every leak. Endeavor selects the method or combination of methods most likely to produce a reliable result.
Electronic Detection
Sensitive electronic instruments are used to inspect accessible joints, coils, valves and piping for refrigerant vapor.
Bubble Testing
Leak-detection solution helps confirm escaping gas at accessible fittings, brazed joints and service connections.
Nitrogen Pressure Testing
The refrigerant circuit may be pressurized with dry nitrogen and monitored for loss over a controlled testing period.
UV Dye Testing
Compatible UV dye may be used when a small or intermittent leak cannot be confirmed through initial testing methods.
Common Leak Locations
Components inspected during leak detection.
Line Sets & Fittings
Flare fittings, brazed joints, damaged tubing and concealed refrigerant piping.
Indoor Coils
Evaporator coils, distributors, headers and factory joints.
Outdoor Coils
Coil tubing, headers, service connections and areas affected by corrosion or physical damage.
Service Valves
Schrader cores, valve stems, service caps and sealing surfaces.
Oil Residue & Damage
Oil staining, deteriorated insulation, abrasion, rodent damage and installation defects.
Diagnosis, leak detection and repair are separate stages.
The initial diagnostic determines whether the system symptoms support additional refrigerant-circuit testing. If extended leak detection is recommended, the scope is explained before that work begins.
After the leak is located, Endeavor reviews whether the affected component can be repaired or should be replaced. Parts, refrigerant, recovery, evacuation and repair labor are quoted separately based on the findings.
No additional repair or refrigerant work is completed without customer authorization.
Responsible Service
Proper refrigerant recovery and handling
Refrigerant work is completed using appropriate recovery, containment, pressure-testing and evacuation procedures. Endeavor Heating and Cooling is EPA 608 Universal certified and services residential systems using refrigerants including R-22, R-410A, R-32 and R-454B when equipment condition, parts availability and repair feasibility support continued service.
Common Questions
Refrigerant leak detection questions.
Can you just add refrigerant to the system?
Adding refrigerant may temporarily restore operation, but it does not correct the cause of refrigerant loss. When the charge is low, the system should be evaluated for a leak or another underlying problem.
The appropriate recommendation depends on the equipment age, leak severity, system condition and repair feasibility.
How long does leak detection take?
Accessible leaks may be located during the initial appointment. More difficult leaks can require extended nitrogen pressure testing, dye circulation, zone isolation or a return visit.
What happens when the refrigerant lines are concealed?
Concealed piping may require pressure testing, zone isolation or testing the equipment and line set as separate sections. When a concealed line cannot be repaired directly, rerouting or replacing the affected piping may be recommended.
Does a pressure drop always mean the system is leaking?
Pressure changes must be interpreted with temperature, stabilization time and test conditions in mind. Test pressure is monitored alongside ambient temperature so normal temperature-related changes are not mistaken for leakage.
Is every refrigerant leak worth repairing?
Not always. Repair may not provide good long-term value when equipment is obsolete, severely corroded, uses difficult-to-source parts or has multiple major concerns.
Endeavor will explain the repair option and replacement considerations so you can make an informed decision.
Is refrigerant included in the diagnostic?
No. The diagnostic covers evaluating the system and reported concern. Leak detection, repairs, recovery, evacuation, parts and replacement refrigerant are separate services when needed.
Suspect a refrigerant leak?
Schedule a diagnostic so Endeavor can evaluate the system, confirm the concern and recommend the appropriate testing or repair process.