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Top-Rated Air conditioning pros in Mayo - Updated Nov 2026

Avatar for Air Repair AL LLC
Air Repair AL LLC
4.4(
158
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Mayo, SC and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"The results of the inspection were not exactly what I had hoped for but I now have a real understanding of the condition of my unit. Technician checked all wiring and connections and cleaned coils and checked compressor and added some refrigerant to the unit. AireServ did an outstanding job of helping me to better understand the condition of my A/C unit and to make a more timely evaluation on life expectancy of my unit. Recommended new system soon."
Wallingford Rd. In Greenville
Goodman
Air Handler
14 neighbors recently requested a quote
Recommended by84%of homeowners
Bentley's Heating & Air
4.7(
42
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+12 more

Serving Mayo, SC and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"I sent a message through Angies List and they responded almost immediately. I was called and given a 30 minute window of their arrival, plus the technician's name. Then the technician called me when he was on his way. He talked to me then went to work and immediately diagnosed the issue (chipmunk chewed the wiring argh!). He gave me a quote which I felt was quite reasonable and the repair only took about 45 minutes. After that, we spoke further about the Hvac (it's pretty old), he said it seems to be running well but obviously has some age to it. He advised I don't need it replaced but may want to consider some ongoing maintenance. He was nice and professional and answered all of my dumb questions. I would definitely call them again.


"
Response time1 day
Response rate100%
14 neighbors recently requested a quote
SNK Services LLC
5.0(
24
)
Central A/C - Install

Serving Mayo, SC and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"My unit kicked the bucket on a Tuesday in July, heard about around the clock heating and air from a friend. Gave Jerry a call and his team he had me up and running on Wednesday afternoon. Very fast response and professional change out. I’ll be using Jerry and the team from Around The Clock for all my heating and air needs!!!"
9 neighbors recently requested a quote
Avatar for Chris Foster Heating & Air
Chris Foster Heating & Air
4.4(
428
)
Central A/C - Service or Repair

Serving Mayo, SC and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Free estimates

Emergency services offered

"The best service I have ever had. Kind and patient, answers all my questions. Installed new system on time without any issues. I would recommend Chris for all air conditioning issues."
Response time9 hrs
47 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for All Comfort Today LLC
All Comfort Today LLC
4.8(
10
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair

Serving Mayo, SC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"All Comfort Today was impressive from the beginning to the end of my project. Bryan Swords canned to my home first and gave me a detailed assessment of my current AC system. Not only did he provide a replacement quote, he also got me two considerable rebates. He provided a detailed package that would replace my zone system and showed me how it would save money. Brian followed up with me to answer questions and came to my house again. The team of installers were professional, clean, and thorough. I am extremely happy with my selection of All Comfort Today, LLC for installing my new Lennox System."
Before
After
Installation
Heat Pump Install
Spring Maintenance

+4

Response time8 hrs
Response rate100%
96 neighbors recently requested a quote
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FAQs for air conditioning projects in Mayo, 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 Mayo, SC homeowners’ guide to air conditioning services

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