(WACO, Texas) – Though the 2019 calendar says the first day of summer is June 21, Texas residents know that hot days and the comfort of air conditioning started much earlier.

On Thursday, June 20, students in Texas State Technical College’s Air Conditioning Troubleshooting class were simulating cold and hot situations on air conditioning systems.

“We are working with high-voltage, spinning unit fans, compressors,” said Derrick Gonzales of Waco, an HVAC (Heating, Ventilation and Air Conditioning) Technology major. “We are working with very high pressures and coolant.”

The students, who aspire to be future HVAC technicians, may have a lot of work to do in the future.

The United States, Japan and China are the world’s top users of air conditioning, according to the International Energy Agency’s 2018 study, “The Future of Cooling.” The number of air conditioning units is projected to rise worldwide to more than 5.6 billion by 2050, according to the study.

“With rising incomes, air conditioner ownership will skyrocket, especially in the emerging world,” Fatih Birol, the IEA’s executive director, said in a prepared statement given at the time of the study. “While this will bring extra comfort and improve daily lives, it is essential that efficiency performance for ACs be prioritized.”

Gonzales said people should check and replace air filters and replace batteries in indoor thermostats. And, they should watch the direction grass is cut around outdoor units to minimize clogging.

HVAC Technology major Otniel Luviano of Buffalo, Texas, said bad air flow can increase pressure blowouts, especially in older units.

Tim Snyder, an instructor in TSTC’s HVAC Technology program, said the ideal time to test air conditioning units is between spells of cold and warm weather.

“Most people have companies they call to come and do preventive maintenance,” he said.

The Texas Department of Licensing and Regulation regulates air conditioning and refrigeration contractors who install, repair and maintain systems.

“The best thing for customers is to investigate their contractor,” Luviano said. “If you want to be a good technician, you have to go forward and learn the right way.”

TSTC offers an Associate of Applied Science degree in HVAC Technology and an HVAC technician certificate.

For more information on Texas State Technical College, go to tstc.edu.

Waco HVAC June 21 2019 photo edited 300x234 - TSTC HVAC Students Encourage Preventive Maintenance on Air Conditioning Units


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