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 Martindale, TX 78655

“Solved the issue quickly, very friendly and helpful staff” – Ross P.

Air Conditioner Maintenance in Maxwell, TX 78656

Was very polite and respectful. He was very knowledgeable about his work and very helpful. I would recommend him to any other customer. I rated him a number 5.”

– Pete C.

Air Conditioner Repair in San Marcos, TX 78666

“Great communication from start to finish. Walter is extremely cognizant of today’s climate and arrived with a mask and gloves on. He stated his safety procedures to protect himself and his community and proceeded to begin his AC work. When job was complete, reviewed work done with proper social distancing measures in place and then proceeded to let me know about their contactless invoice process. In conclusion, I just found my new “AC peeps” and you will too when y’all give them a call. Support local!”

– James D.

Air Conditioner Maintenance in Wimberley, TX 78676

“Tyler is a superb employee.
Honest, courteous, hardworking.

Robert – Wimberley Presbyterian Church”

– Robert M.

Air Conditioner Repair in San Marcos, TX 78666

“Walter runs a great organization. They communicated well and fixed the issue. This service call was as reliable as usual. Excellent group of people.”

– Darius T.

Air Conditioner Repair in San Marcos, TX 78666

“The whole team is always courteous, skilled, thorough and timely. They communicate well, answer my questions and always offer options for the service requested. The prices are reasonable and billing options work well for our budget. Thank you for always taking care of us.”

– Darius T.

Air Conditioner Maintenance in San Marcos, TX 78666

“Dean’s Shop did a great job cleaning my portable AC unit.”

– Shelley B.

Air Conditioner Repair in Wimberley, TX 78676

“Professional job, waiting on repair options/costs.”

– Robert S.

Air Conditioner Repair in San Marcos, TX 78648

“I’m in the service business and can tell you this service company knows what they are doing I respect them coming here to clean up what the kids from other AC repair shops have charged me to do wrong 6 star’s for deans”

– Matt W.

Air Conditioner Installation in San Marcos, TX 78666

“Casey from Dean’s Shop came by today to finish HVAC installation. Like always, he displayed a professional demeanor and assured everything was working properly. I am very thankful to Casey, Walter, Danetta, and Lindsey for their professionalism, and hard work, as they perform the important services provided by Dean’s Shop.”

– Charles G.

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.