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Find Air conditioning pros in Rock Hill

Avatar for Comfort Monster Heating & Air / Absolute
Comfort Monster Heating & Air / Absolute
4.8(
236
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+1 more

Serving Rock Hill, SC and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"All I have to say is that Absolute Comfort Heating and Air Conditioning exceeded our expectations on the installation of our new Trane heat pump! Alex was our point of contact, and he was very knowledgeable, and courteous. The installation crew arrived on schedule and impressed us with their expertise! Robert, Courtland and Cody got right to work and took out the old system… and then installed our new heat pump. They were all knowledgeable, friendly and courteous… answering any questions we had! One day! We have cool air tonight! Thanks guys!"
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+2

Response time1 day
Response rate100%
75 neighbors recently requested a quote
Avatar for GSM Services
GSM Services
4.7(
105
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+6 more

Serving Rock Hill, SC and surrounding areas

Approved

In business since 1927

Free estimates

Emergency services offered

"I hired GSM Services to replace my A/C unit and furnace with a newer, upgraded system. A few weeks ago Kelly came to my house to give me an estimate for a new heating and air system. He was on time and very professional. He surveyed my existing system, took measurements of my house, and did some calculations to determine exactly what type and capacity system that I would need. He showed and explained to me several options as well as their prices. He wasn’t pushy as he left in order to give me time to review the different options before making my decision. I called the office the next day with my decision and to set up a date and time for installation. Today (May 22) Kyle and Craig showed up on time and were extremely professional as well. They worked from 8:30 to 5:30 completing the replacement of my entire heating/air system. The field team leader also showed up just to ensure that everything was going smoothly. They were very helpful in answering any questions that I had throughput the day and they took the time to explain to me about the new system after installation was complete (I.e. how to operate the new programmable thermostat). Overall, it was a great experience and I will definitely use them again."
New Air Conditioners
AC System Replacement in Charlotte, NC
Dust and debris from ductwork pulled into the duct cleaning machine
Ductless Mini Split Installation
AC Install Gastonia

+62

Response time1 day
32 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for NuBlue Air
NuBlue Air
4.4(
52
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+6 more

Serving Rock Hill, SC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Service Tech msg when he was on his way. Arrived on time and was very professional. However, the estimate for the replacement unit was 3 times higher than what a unit should cost to replace. So needless to say, I was disappointed in their quote."
HVAC Installation Services
Vent & Duct Cleaning
Indoor Air Quality Solutions
Thermostats
HVAC Maintenance

+36

Response time1 day
8 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for TOP MECHANICAL SERVICE
TOP MECHANICAL SERVICE
5.0(
6
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+1 more

Serving Rock Hill, SC and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

Top Mechanical Service provides reliable, professional residential HVAC repair services throughout Charlotte and nearby communities. We focus on accurate diagnostics, honest recommendations, and long-lasting repair solutions for your home’s heating and cooling systems.\n\nWe service all major residential brands and offer:\n• Furnace & heat pump repair\n• AC repair and troubleshooting\n• System performance evaluations\n• Preventive maintenance & seasonal checkups\n\n

Response time6 hrs
Response rate100%
4 neighbors recently requested a quote
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FAQs for air conditioning projects in Rock Hill, SC

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 Rock Hill, SC homeowners’ guide to air conditioning services

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