Goodman HVAC Error Code 13 Flash: How to Fix It
Medium 30-45 minutes High Severity
Verified June 2026
- Error Code
- 13 flash
- Brand
- Goodman
- Product Type
- hvac
- Severity
- High
- DIY Difficulty
- Medium
- Estimated Fix Time
- 30-45 minutes
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Tools You'll Need
- Garden hose
- Coil cleaning brush
- Flashlight
- New air filter
How to Fix Error Code 13 flash
-
Turn Off Power and Check Safety
Never attempt to work on a running HVAC system. High temperatures and electrical hazards are present. -
Inspect for Visible Refrigerant Leaks
Do not touch refrigerant lines with bare hands as they may be extremely hot or cold. -
Check Air Filter and Airflow
-
Inspect Outdoor Unit Coil
Ensure power is off before cleaning. Do not use high pressure that could damage the delicate fins. -
Check for Blocked Refrigerant Lines
Do not attempt to straighten or repair refrigerant lines yourself as this can cause leaks. -
Document and Call Professional
Refrigerant handling requires EPA certification. DIY refrigerant work is illegal in most areas.
Parts You May Need
HVAC air filter
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Coil cleaner
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Refrigerant leak sealant
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HVAC air filter
Check Price on Amazon
Coil cleaner
Check Price on Amazon
Refrigerant leak sealant
Check Price on Amazon
HVAC air filter
Check Price on Amazon
Coil cleaner
Check Price on Amazon
Refrigerant leak sealant
Check Price on Amazon
HVAC air filter
Check Price on Amazon
Coil cleaner
Check Price on Amazon
Refrigerant leak sealant
Check Price on Amazon
HVAC air filter
Check Price on Amazon
Coil cleaner
Check Price on Amazon
Refrigerant leak sealant
Check Price on Amazon
HVAC air filter
Check Price on Amazon
Coil cleaner
Check Price on Amazon
Refrigerant leak sealant
Check Price on Amazon
HVAC air filter
Check Price on Amazon
Coil cleaner
Check Price on Amazon
Refrigerant leak sealant
Check Price on Amazon
HVAC air filter
Check Price on Amazon
Coil cleaner
Check Price on Amazon
Refrigerant leak sealant
Check Price on Amazon
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When to Call a Professional
Call a professional immediately if you suspect refrigerant leaks, if the error persists after basic cleaning, or if you're uncomfortable working around electrical equipment. Refrigerant work requires EPA certification and specialized tools like manifold gauges and leak detectors. A technician can properly diagnose low refrigerant levels, locate leaks, and safely recharge the system.Frequently Asked Questions
What does Goodman 13 flash error code mean?
Goodman 13 flash means the discharge line temperature is too high, typically caused by low refrigerant levels. This is a serious error that can damage your compressor if not addressed quickly.
Can I fix Goodman 13 flash error myself?
You can perform basic checks like replacing air filters and cleaning coils, but refrigerant issues require professional service. Handling refrigerant requires EPA certification and specialized equipment.
How much does it cost to fix low refrigerant in Goodman HVAC?
Costs vary by location and problem severity, but expect $200-600 for leak detection and repair, plus $100-300 for refrigerant recharge. Simple filter replacement costs $20-50.
Is Goodman 13 flash error dangerous?
Yes, high discharge temperatures can permanently damage your compressor, leading to expensive repairs ($1,500-3,000+). Address this error immediately to prevent further damage.
How long does it take to fix Goodman 13 flash error?
Basic maintenance takes 30-45 minutes, but professional refrigerant leak repair can take 2-6 hours depending on leak location and accessibility.