Why Is My AC Running But Not Cooling? A San Antonio Tech Explains

6Jul2026

Why Is My AC Running But Not Cooling? A San Antonio Tech Explains

Few things are more frustrating during a Texas summer than an AC running but not cooling. You can hear the system running, air is coming from the vents, but your home still feels warm and uncomfortable.

The good news is that some causes are simple and can be checked safely by homeowners. Others require professional repairs to restore comfort and prevent further damage. Here are some of the most common reasons an air conditioner may be running without properly cooling your home.

Cooling

AC Not Cooling Properly? Here’s What San Antonio, TX Homeowners Should Check First

3Jul2026

There’s nothing more frustrating than turning on your air conditioner during a hot San Antonio afternoon only to realize your AC is not cooling properly. Maybe warm air is coming from the vents, certain rooms won’t cool down, or your system seems to run constantly without making your home comfortable.

The good news is that not every cooling problem means you’re facing an expensive repair. Sometimes, the issue is something simple you can check yourself. Other times, it may be an early warning sign that your HVAC system needs professional attention.

Here’s what San Antonio homeowners should check first, what might be causing the problem, and how to recognize when it’s time to call Shafer Services Plus.

Cooling

San Antonio Guide to Surviving a Texas Summer

23Jun2026

Summer in San Antonio means long sunny days, family activities, and plenty of opportunities to enjoy everything our city has to offer. It also means intense heat, high humidity, and an air conditioning system that may work overtime to keep your home comfortable.

Whether you’re looking for fun things to do in San Antonio during the summer, ways to lower your energy bills, or tips to help your HVAC system handle the heat, a little preparation can go a long way.

From staying safe during heatwaves to keeping your AC running efficiently, here’s your guide to making the most of a Texas summer.

Plumbing

What is the Life Expectancy of a Water Heater?

22Jun2026

Water heaters are one of the hardest-working appliances in your home. Most homeowners don’t think about them until there’s no hot water, a leak appears, or the system stops working altogether. Understanding the life expectancy of a water heater can help you recognize the signs that the water heater is going out and avoid an unexpected cold shower or costly water damage.

So how long should a water heater last, and what warning signs should you watch for before it fails?

Cooling, Heating, Indoor Air Quality

What Should I Look for in an HVAC quote?

15Jun2026

Replacing or upgrading HVAC systems is a significant investment, which is why reviewing your estimate carefully is so important. While many homeowners focus primarily on price, the lowest quote is not always the best value. Understanding what should be included in an HVAC quote can help you compare options confidently and ensure you are getting the right solution for your home.

Whether you are considering repairs or a new HVAC system, knowing what to look for can help you avoid surprises and make a more informed decision.

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maria rubio

October 21, 2026

Shafer does wondeful work. Diego was polite and friendly. He explained everything.

Josephine Al-Duha

Dustin was very patient kind and professional with me. He made sure that I understood and was explained everything that I needed to know about the condition of the AC unit. I cannot thank him enough for being so kind with me. I cannot think Shafer enough for the service. I am continuing to save for the extension of my heating system downstairs. Thank you.

Carole Haynes

October 20, 2026

Franc went above and beyond with multiple plumbing issues I was having. He found the clean out drain when I could not and cleared the obstruction 60 ft. from my house. He then repaired the rock pathway I had dug up trying to find the drain. He checked faucets and cleared drains in one bathroom. He fixed a toilet and a stuck cold water faucet in another. The whole time he kept me informed and answered all of my questions.

J M

October 19, 2026

Diego was extremely professional and honest. I’m so glad I found someone who didn’t try to swindle me like others have in the past. I also appreciated his honesty about another question I had. He gave me a realistic answer and explained why it wasn’t something that could be done (I mean….it could but it would be a headache), which was a relief. Other plumbers told me it was possible and wanted to charge me an arm and a leg. I’ve had my tankless water heater flushed annually in the past, so I was happy to hear there wasn’t much buildup. Keep up with your annual flushes, everyone! Preventive maintenance makes a difference!

Patricia Eppright

October 16, 2026

Diego always does a great job

A Wilson

Franco showed up a little early which was great.he was professional, friendly and got right to work. Listened to me. I'll study the estimate and make a decision soon

Beth B.

Frank was outstanding! He was extremely knowledgeable, friendly, and professional throughout the entire service call. He took the time to explain everything clearly, answered all of my questions, and was completely transparent about the services needed and the pricing involved. There were no surprises, and I truly appreciated his honesty and expertise. If you're looking for a trustworthy plumber who provides excellent customer service, I highly recommend Frank!

kim sue

October 15, 2026

This is the second time I’ve used Shafer for major services and installation. They have been quick to respond, timely with scheduling, reasonable and sensitive with payment options, consistent with follow ups and do clean work. Andy, our technician, is always welcome here.

Jimmy Keane

Dispatch fee should of been waived, I feel it shouldn’t of been charged spoke to Vinny about it 3 x

Mary Fritschle

Wow. They were pretty quick to get here and save me from a night without air conditioning. And the serviceman was still friendly at 9:00 at night.

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