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Expert AC Repair & HVAC Services in San Antonio
Expert AC Repair & HVAC Services in San Antonio
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Frequently Asked Questions

A blank thermostat screen is often the first sign of a power issue within your HVAC system. Common causes include dead batteries or a tripped safety switch—like a float switch triggered by a clogged drain line. Whether it’s a simple battery swap or a deeper electrical issue, our experts can help. We offer a $80 flat-rate service call to diagnose the problem and provide a transparent repair quote. Best of all, we waive the service call fee entirely if you approve the repair!


Deciding whether to keep fixing your old air conditioner or invest in a new one usually comes down to three factors: Age, Cost, and Efficiency.

  • The 5,000 Rule: A common industry standard is to multiply the age of the unit by the repair cost. If the total is more than $5,000, it’s usually time to replace it. (For example: a 10-year-old unit needing a $600 repair equals $6,000—replacement is likely the smarter investment).
  • The "Double" Rule: If you find yourself calling for repairs more than twice in a single season, your system is becoming unreliable and likely costing you more in the long run.
  • Energy Efficiency: Older units (10–15+ years) use significantly more electricity. A new, high-efficiency system can often pay for itself over time through lower monthly utility bills.

If you’re unsure, we can help! We provide a professional $80 diagnostic visit to evaluate your system's health. We’ll give you an honest breakdown of the repair costs versus the benefits of a new installation. Plus, if you decide to go with the repair, your service call fee is waived! 

We carry and sell Goodman , Carrier , Trane and Lennox.


If your air conditioner is running but you only feel warm air coming from the vents, it usually indicates that the cooling cycle has been interrupted. This is a common issue that can range from a simple fix to a more serious mechanical failure.Common Causes for an AC Not Cooling:

  • Incorrect Thermostat Settings: Ensure your thermostat is set to "COOL" and the fan is set to "AUTO". If the fan is set to "ON," it will blow unconditioned air even when the system isn't cooling.
  • Dirty Air Filter: A clogged filter restricts airflow, which can cause the evaporator coils to freeze and block the cooling process entirely.
  • Refrigerant Leak: Refrigerant is the "messenger" that carries heat out of your home. If levels are low due to a leak, your system cannot effectively cool the air.
  • Outdoor Unit Issues: If the outdoor condenser is blocked by debris (like leaves or tall grass) or has lost power due to a tripped circuit breaker, it can't release heat to the outside.
  • Failed Components: Critical parts like the capacitor, fan motor, or compressor may have failed, requiring professional diagnosis.

Should you turn off your AC if it’s blowing hot air?
Yes. We recommend turning the system off immediately to prevent further damage to the compressor.For just a $80 flat-rate service fee, we will perform a full diagnostic to find the exact cause of the warm air and provide a clear repair quote. Remember, we waive the service call fee if you choose us to handle the repair!


An HVAC system shouldn't be loud. If your unit is making unusual sounds, it’s often a "cry for help" from a mechanical part that is starting to fail. Catching these noises early can save you from a much more expensive repair down the road.Common HVAC Noises and What They Mean:

  • Banging or Clanking: This usually means a part has come loose—like a connecting rod or a fan blade—and is hitting other components.
  • Squealing or Screeching: This is typically a sign of a bad belt or a failing motor bearing in your indoor or outdoor fan.
  • Hissing: A hissing sound often points to a refrigerant leak or an issue with your internal valve.
  • Clicking: While a few clicks are normal when a system starts, constant clicking usually means an electrical issue or a failing capacitor/contactor.
  • Buzzing: This could indicate anything from loose parts to electrical vibrations or a failing motor.

Don't ignore the noise! Turning the system off when you hear something unusual can prevent a small part from breaking the entire unit.Give us a call for an $80 flat-rate diagnostic. We’ll pinpoint exactly where the noise is coming from and give you a clear quote to quiet it down. Plus, we waive the service call fee when you approve the repair!


Finding water pooling around your indoor unit can be alarming, but it’s a very common issue. Your air conditioner doesn’t just cool the air; it also removes humidity. When that moisture has nowhere to go, it ends up on your floor or leaking through your ceiling.The Most Common Culprits:

  • Clogged Condensate Drain Line: This is the #1 cause. Dust, dirt, and algae can plug the PVC drain line, causing the water to back up and overflow the internal drain pan.
  • Cracked or Rusted Drain Pan: In older units, the metal or plastic pan that catches condensation can rust through or crack over time.
  • Frozen Evaporator Coil: If your air filter is dirty or your refrigerant is low, the indoor coil can turn into a block of ice. When that ice melts, it creates more water than the drain can handle.
  • Failed Condensate Pump: If your unit is in a basement or closet where water has to be pumped "up" to exit the home, a broken pump will cause an immediate leak.

What should you do?
Turn your AC system OFF at the thermostat to stop the production of more moisture and prevent water damage to your home’s drywall or flooring.We offer a flat-rate $80 diagnostic to clear your drain line or find the source of the leak. We’ll provide a full quote for the fix, and we waive the service call fee if you choose us to perform the repair!


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24 Hour Emergency Service Available

Based in San Antonio, Texas, we are an A/C company committed to delivering quality work and providing honest, friendly service at a great price. We specialize in air conditioning repair, energy efficient heating, and comprehensive refrigeration services. Our focus is on energy savings and effective climate control. 


Contact us for all your air conditioning, heating, and refrigeration needs. 


Call us at 210-897-3953.

Green Efficiency HVAC and refrigeration

210-897-3953

Hours

Open today

08:00 am – 05:00 pm

Monday - Friday: 8am - 5pm

Saturday - Sunday: By appointment only/Emergency calls

Copyright © 2026 Green efficiency HVAC and refrigeration - All Rights Reserved.

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