Common HVAC Problem

Refrigerant Leak

Your HVAC system is telling you something. Here's what refrigerant leak means, why it happens, and how to fix it.

Direct answer

Refrigerant Leak usually needs a step-by-step diagnosis: confirm thermostat settings, check airflow, look for visible equipment symptoms, and match the issue to likely causes. If basic checks do not resolve it or the system shows safety warning signs, schedule a professional inspection before the problem damages major components.

Schedule DiagnosisCall (650) 396-3290

Signs You're Experiencing This

AC not cooling effectively
Hissing or bubbling sounds
Ice on refrigerant lines
Higher electric bills
System runs longer

What We Check During Diagnosis

1Thermostat settings and system response
2Airflow through filters, vents, and returns
3Electrical controls and visible equipment condition
4Repair options, urgency, and prevention steps

Triage Before the Visit

Safe first checks

Thermostat mode, filter condition, breaker position, open vents, and visible outdoor equipment status are reasonable homeowner checks.

Stop if there are safety signs

Burning smells, electrical buzzing, gas odor, ice returning, or water around equipment should move the call to a professional diagnosis.

Track the pattern

When the issue starts, how long the system runs, and which rooms are affected can point to airflow, control, or equipment causes.

Technician Diagnostic Path

Confirm the call

The thermostat and control board must actually be asking the system to run before parts are tested.

Separate airflow from equipment failure

A dirty filter, blocked return, weak blower, or duct issue can mimic a major failure.

Test components under load

Parts that look fine visually can fail when the system starts or runs under real demand.

What Causes Refrigerant Leak

1

Vibration causing joint failures

2

Corrosion of coils

3

Factory defects

4

Physical damage

5

Age-related wear

Try These Before Calling

Safe checks you can do yourself before scheduling a service call.

1
Look for ice on outdoor unit or lines
2
Listen for hissing near AC
3
Check if cooling has declined
4
Notice if system runs longer than before

When to Call a Professional

  • Always - refrigerant requires EPA certification
  • Any suspected leak
  • Ice present on system
  • Cooling declined significantly
Schedule Service Now

Services That Can Help

AC Repair

Fast diagnosis and repair for all air conditioning issues

AC Maintenance

Preventive maintenance to keep your AC running efficiently

Related Problems

AC Not Cooling

Air conditioner runs but house stays warm

Learn more

AC Blowing Warm Air

Warm air coming from vents

Learn more

Frozen AC Coils

Ice visible on indoor unit

Learn more

Refrigerant Leak FAQ

Refrigerant Leak is commonly caused by: Vibration causing joint failures, Corrosion of coils, Factory defects. Other factors include Physical damage and Age-related wear. A professional diagnosis can pinpoint the exact cause in your system.

Still Having Issues?

Our technicians can diagnose refrigerant leak and fix it fast. Same-day appointments available.

Schedule Service(650) 396-3290

24/7 Phone Support, Technicians 8am-8pm Daily

Book Now