My Heat Works But Not AC — What’s Causing It?

Why Your Heat Works But Your AC Doesn’t

If your furnace runs fine but your air conditioner won’t cool, you’re dealing with a cooling-side failure, not a full system failure.

Heating and cooling share ductwork — but they operate independently.

This is extremely common in:

• Oklahoma City
• Moore
• Norman

Top Causes

1. Outdoor Unit Not Running

If the condenser outside isn’t turning on, AC won’t cool.

Usually:

• Bad capacitor
• Contactor failure
• Electrical issue

2. Refrigerant Leak

System runs but blows warm air.

3. Frozen Evaporator Coil

Airflow restriction or low refrigerant.

4. Thermostat Wiring Issue

Heating wire (W) works. Cooling wire (Y) not signaling properly.

Why This Requires Expert AC Service

This is not a DIY diagnosis.

An expert AC service technician will:

• Check refrigerant pressure
• Test capacitor and contactor
• Inspect evaporator coil
• Verify thermostat voltage
• Confirm compressor function

If you're searching for:

• ac repair oklahoma city
• ac repair okc
• expert ac service

You likely need same-day diagnostics.

Repair vs Replacement?

If:

• System is 12–15+ years old
• Compressor failed
• Refrigerant is R-22
• Repairs exceed 40% of replacement cost

Then AC installation becomes smarter long-term.

When It’s Time for Installation

Homeowners in Edmond often search:

• ac installation near me edmond
• ac installation edmond ok

Replacement is strategic when repair stacking begins.

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