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Air Conditioning


Dean's Shop is your #1 HVAC contractor in San Marcos, TX and the surrounding communities. We are the leading company for all of your air conditioning needs. If you need repairs, maintenance, or a brand new system installed, the technicians at Dean's Shop are the qualified and professional crew for the job.

We provide the highest quality service for your air conditioner. We also aim to educate and inform our customers. Informed decisions are good decisions. We want you to feel confident we are qualified to perform the service for which you are hiring us.

Air Conditioning Basics

The four main components to your air conditioner are:

Condenser: The condenser is the outside metal unit and where the gas from the compressor is condensed into a liquid. The gas entering the condenser is very hot. The temperature is then lowered, so the gas can convert back to a liquid.

Compressor: The compressor is inside the condenser. It circulates the pressurized refrigerant, to concentrate the heat, and changes the low pressure gas to high pressure.

Evaporator: The evaporator is the part of the system inside the home. In simple language, it absorbs the heat from your home.

Expansion Valve: The expansion valve controls the amount of refrigerant in your system.

All of these pieces are connected by a copper tube that handles refrigerant, creating a closed loop. Heat is collected in the evaporator, sent outside to the condenser. The heat is removed, and the cool air is recirculated back into your home.

AC Facts

An Air Conditioner Doesn’t Create Cool Air.
What happens in the AC process is actually the removal of heat from the air. Your AC uses a chemical called refrigerant to remove heat and transfer it outside. The warm air runs through the lines and coils in your unit and goes from liquid to gas and back again. During this process, the refrigerant removes the heat and transfers it elsewhere so that when the air comes out the other side, it is cool.

Your AC Will Remove Humidity.
Lower humidity helps the overall comfort level in your home by making you feel cooler, even if the temperature is the same.

Your Air Filter Needs To Be Checked And Replaced Every Three To Six Months.
(depending on the manufacturer’s recommendations)
A dirty air filter restricts your air flow, which reduces efficiency, costing you money, and over time can put stress on your unit and could cause a costly repair.

Maintenance, Maintenance, Maintenance.
Your air conditioner needs regular checkups to keep it running in tip-top shape. Having regular annual preventative maintenance will bring your system longer life and fewer breakdowns over all.

The Seasonal Energy Efficiency Ratio (SEER) measures air conditioning and heat pump cooling efficiency, which is calculated by the cooling output for a typical cooling season divided by the total electric energy input during the same time frame. A higher SEER rating means greater energy efficiency.

At Dean's Shop, we provide all the services you need to keep your AC running in top-notch shape. Call us at 512-353-4770 for repairs, maintenance, or new-system installation.

Need Air Conditioner Service?

Contact the experts at Dean's Shop.

Call us at 512-353-4770!

Air Conditioner Repair in San Marcos, TX 78666

“The repairman was here on time and ready to go. They assessed the problem and got to work. Kept a clean space and got me up and running quickly! Thank you so much!” – Lisa K.

Air Conditioner Maintenance in San Marcos, TX 78666

“Fast reliable service”

– Steve W.

Air Conditioner Repair in San Marcos, TX 78666

“Great service. My wife was in the hospital getting ready to be discharged. The AC had gone out in our house. Dean’s and tech Cody were out in a matter of a couple of hours to repair so the house would be cool when my wife arrived. Great job!!!”

– Tom C.

Air Conditioner Repair in San Marcos, TX 78666

“Dean’s AC and Tyler always does a good job. Always professional, courteous, knowledgeable quickly diagnosing the problem and repairing my AC units with a fair and competitive price.”

– Tom C.

Air Conditioner Maintenance in San Marcos, TX 78666

“Very thorough and professional manner. Arrived within previous given time parameters and called to inform he was on the way. Great customer service. Thx.”

– Kenneth E.

Air Conditioner Repair in San Marcos, TX 78666

“After speedy diagnosis, failed fan motor replaced without delay, since part was on truck.”

– Margaret L.

Air Conditioner Repair in San Marcos, TX 78666

“Cody explained my choices clearly. The repair was done quickly.”

– Lisa A.

Air Conditioner Maintenance in San Marcos, TX 78666

“Cody did a very professional and through job. Review in detail the final report.”

– Tom C.

Air Conditioner Repair in San Marcos, TX 78666

“Thank you so much for working me in today, I really needed the A/C back up & running, it has been unseasonably HOT!”

– Susie H.

Air Conditioner Replacement in San Marcos, TX 78666

“Left a phone message Sunday, call back Monday morning followed by repair visit, faulty motor identified and replacement part located, and motor replaced Monday afternoon. One day service – excellent work by Cody.”

– Margaret L.

Dean's Shop proudly provides HVAC service to Buda, Kyle, Martindale, New Braunfels, San Marcos, Seguin, Wimberley and the surrounding Texas communities. Visit our service area page for more coverage details, call us at 512-353-4770, or request service online today.