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Find Air conditioning pros in Killeen

ColdAir Mechanical
5.0(
31
)

Serving Killeen, TX and surrounding areas

Approved

In business since 2003

Warranties offered

Credit card accepted

"Tony Flowers from Cold Air Mechanical is a reliable A/C specialist/technician, who replaced/repaired my home A/C system which had a defect coil that leaked freon and a near burn-out compressor under the extreme hot summer, August 2025. Tony managed to have both the defect coil and the compressor replaced by the manufactory under the warranty – it saved me a lot of money. In addition, Tony had followed up the A/C supplier store to have the cost of new coil refunded to me as under warranty. Tony conducted phone calls with the supplier store in Austin, which drove him to the supplier’s corporation finance department to get the refund completed. I strongly recommend Tony Flowers from Cold Air Mechanical to anyone who needs A/C service. Thuy Nguyen Pflugerville, Texas"
Response time2 days
13 neighbors recently requested a quote
Recommended by3%of homeowners
Avatar for Bob Jay's HVAC & Plumbing
Bob Jay's HVAC & Plumbing
4.8(
42
)

Serving Killeen, TX and surrounding areas

Approved

In business since 1973

Free estimates

Warranties offered

"They were honest and knowledgeable on my system letting me know that my HAVC unit was in excellent condition and only needed routine maintenance. They could have charged me more but only charge for the work done, offering ways to say even more money in the future."
New Install Trailer
Retro-fit install
Thermostat
Annual Maintenance
Response time9 hrs
Recommended by100%of homeowners
Avatar for Prichard's Air Conditioning and Heating, LLC
Prichard's Air Conditioning and Heating, LLC
5.0(
13
)

Serving Killeen, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Best service I have ever had. Responsive, quick, and honest. Joe laid out my options and what I should expect from each. It was refreshing to be provided with options."
Prichards AC Pictures
Prichards AC Pictures
Prichards AC Pictures
Prichards AC Pictures
Prichards AC Pictures

+6

Response time4 hrs
7 neighbors recently requested a quote
Recommended by33%of homeowners
Avatar for HEATING AND AIR PARAMEDICS OF AUSTIN
HEATING AND AIR PARAMEDICS OF AUSTIN
5.0(
15
)

Serving Killeen, TX and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Heating & Air Paramedics of Greater Austin provides residential and light commercial heating, ventilation, and air conditioning (HVAC) services throughout the Greater Austin area, including system diagnostics, repairs, preventive maintenance, and full equipment replacement. The company is committed to excellence in every aspect of its operations, upholding the highest standards of integrity, fairness, honesty, and personal responsibility. Its distinction lies in the quality of service delivered to customers, driven by accurate technical knowledge and skilled workmanship. Above all, Heating & Air Paramedics of Greater Austin prioritizes customer interests, making their needs and concerns the foundation of its business

Logo
2 neighbors recently requested a quote
Avatar for Team Enoch HVAC Service Austin
Team Enoch HVAC Service Austin
4.6(
397
)

Serving Killeen, TX and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Miles Enoch was very responsive and helpful. The crew who brought the equipment the day before and the crew who did the installation were professional, efficient and a pleasure to have in our home. The crew all wore masks. We are very pleased with our new air conditioning system"
Ecobee Thermostat
Goodman Air Handler
Goodman Air Handler
Goodman Outdoor Condenser
Multi-unit Installs

+2

218 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Team Enoch HVAC Install Austin
Team Enoch HVAC Install Austin
4.7(
569
)

Serving Killeen, TX and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Excellent work. Arrives on time and very personable. Installation of ceiling fans was done professionally. Had ordered one fan that was too small for the room. Was advised what to order and what to order for another room with high ceilings. Sent back small fan ordered two new ones and Don from Enoch installed the new ones. Had trouble with air conditioner cutting out and noticed it was tripping the breaker switch. Don arrived again, diagnosed the situation. Breaker switch was too small for the air conditioner. Installed correct breaker switch and everything running smoothly. *This review was migrated from an affiliated account on Angi with an original submission date of 8/27/2016."
Interior replacement
Enoch Truck
Outside Installation
515 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for 3C Mechanical Technologies, Inc.
3C Mechanical Technologies, Inc.
4.8(
49
)

Serving Killeen, TX and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Prompt and courteous. Knowledgeable. I asked about a programmable thermostat and he had one on the truck and installed it as well as checking and cleaning the furnace. Took the time to explain about the furnace and how it worked."
Installation of duct
Showing duct
Install tech adding duct
Install tech adding duct
Install tech adding duct

+20

Response time1 day
Recommended by97%of homeowners
Avatar for Deane Electric & Air Conditioning, LLC
Deane Electric & Air Conditioning, LLC
5.0(
7
)

Serving Killeen, TX and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"My kitchen lights were not working and my property maintenance company sent Dean Electric to my home. John & John were efficient, communicated the time they were coming out, were on time, friendly, and explained the details of the problem. They resolved the issue quickly and I felt that comfortable with the job and that they were knowledgeable in the work/service that they performed. Customer service was awesome. Perfect gentleman! Thanks so much!"
427 neighbors recently requested a quote
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FAQs for air conditioning projects in Killeen, TX

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Killeen, TX homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.