Last updated: 2026-05-01

🛠️ Can you fix this?

DIY confidence 0%

Easy — Most homeowners

❄️

Air Conditioner Not Cooling

AC runs but air coming from vents is warm or lukewarm

80%

80% chance this is caused by:

Dirty air filter, low refrigerant, or failed capacitor

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Fix it this weekend. Most parts ship same-day on Amazon.

A service call costs $150-300. This repair takes about 15-30 minutes and the part runs $45. Order the part tonight, fix it Saturday morning.

🔧 The Exact Part You Need

Dual Run Capacitor

$20

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Air Filter (4-pack)

$25

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Total parts cost: $45. Same-day shipping available on most items.

🔍

Find the Right Part for Your Air Conditioner

Parts vary by model. Search with your model number for the best match.

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Tip: Add your model number (e.g. "GE GSS25GSH") for more precise results.

🔥 Parts for Air Conditioners move fast on Amazon — especially common failure parts like these.

🔨 Tools You'll Need

Multimeter

$17

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Easy · 15-30 minutes

Parts: $45 vs $$3,000-7,000 to replace

📋 Step-by-Step Instructions

Check the air filter first — if it's dirty, replace it

Go to the outdoor condenser unit

Check if the fan is spinning — if not, the capacitor is likely dead

Remove the side panel of the condenser

Locate the dual run capacitor (silver cylinder)

Test with multimeter or just replace it (they're cheap and common failure)

If capacitor is fine and refrigerant lines are ice-covered, call for recharge

⚠️

Don't put this off.

A Air Conditioner that's failing can cause water damage, electrical issues, or food spoilage — each costing 10x what the replacement part costs. The fix is straightforward. The part is cheap. The risk of waiting isn't.

Frequently Asked Questions

How much does it cost to fix a air conditioner that's not cooling?

The part costs about $20. If you do it yourself, that's your total cost. A professional service call would add $100-200 in labor, bringing the total to $170.

How long does this air conditioner repair take?

This repair is rated "easy" and typically takes 15-30 minutes. The most time-consuming part is usually accessing the component, not the actual swap.

What if this isn't the problem?

Our diagnosis is 80% likely based on the symptom you described. If replacing this part doesn't fix it, the next most common cause for "ac runs but air coming from vents is warm or lukewarm" would be related to the wiring harness or control board. In that case, consider calling a professional.

Should I just replace my air conditioner instead?

A new air conditioner costs $3,000-7,000. If yours is well under 10-15 years old, a $20 repair is far more cost-effective. If it's near end-of-life and has had multiple issues, replacement starts making more sense.

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