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

Serving Lancaster, 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!"
Additional Photos
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+2

Response time1 day
Response rate100%
68 neighbors recently requested a quote
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Avatar for Brothers- ARS Air, Heat, and Plumbing
Brothers- ARS Air, Heat, and Plumbing
4.5(
200
)
Central A/C - Service or RepairCentral A/C - InstallDuctless Mini-split A/C - Install or Replace+2 more

Serving Lancaster, SC and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1995

Free estimates

Credit card accepted

"This company was just wonderful. Our new home had a huge job and they got it all completed in one day. They worked a 12 hour day just to insure we had air conditioning when we went to bed. Heath was amazing and very knowledgeable."
System Installation
686 neighbors recently requested a quote
Recommended by66%of homeowners
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Avatar for Right Guys Heating & Air
Right Guys Heating & Air
5.0(
17
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Lancaster, SC and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Everything was done in a professional and courteous manner. My unit runs perfectly and I would hire them again. I highly recommend their work."
Heat Pump Outdoor
Air handler in attic
Gas furnace
Heat Pump
Heat pump

+2

Response time5 hrs
Response rate100%
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Avatar for Urgent Air Services LLC
Urgent Air Services LLC
5.0(
26
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Lancaster, SC and surrounding areas

Approved

In business since 2023

Credit card accepted

Offers commercial services

"Coty showed up on time and was professional & personable throughout the service. His prices were competitive and he was able to complete the work in a timely manner. Urgent Air is now my only choice for HVAC."
NE Cola Home Repairs
NE Cola Home Repairs
Variable Speed Air Handler
New Variable Speed Air Handler
New Enlarged Return Duct

+3

Response time4 hrs
Response rate88%
4 neighbors recently requested a quote
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Avatar for Tru Blu Heating and Cooling LLC
Tru Blu Heating and Cooling LLC
5.0(
6
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Lancaster, SC and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Quick response, brought my unit up to code. Good job. Took pictures of the work completed. Recommend annual check up. Very friendly."
Response time4 hrs
5 neighbors recently requested a quote
Recommended by83%of homeowners
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Avatar for HS Services HVAC, Inc.
HS Services HVAC, Inc.
4.5(
11
)
Central A/C - Install - For BusinessCentral A/C - Service or Repair - For Business

Serving Lancaster, SC and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"GREAT PEOPLE TO WORK WITH."
Response time3 days
13 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Call Dad, LLC
Call Dad, LLC
4.0(
46
)
Central A/C - Service or Repair

Serving Lancaster, SC and surrounding areas

Approved (Corporate)

In business since 2012

Free estimates

Emergency services offered

"Knowledgeable and very good diagnostics. Lived up to the name of Call Dad with Dad jokes. Very good customer service"
AC Unit
Air Handler/Furnace
Response time3 hrs
Response rate87%
241 neighbors recently requested a quote
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Avatar for Mr. Handyman of South Charlotte
Mr. Handyman of South Charlotte
4.8(
12
)
Window A/C Unit - InstallWindow A/C Unit - Install - For Business

Serving Lancaster, SC and surrounding areas

Approved

In business since 2018

Warranties offered

Credit card accepted

"Very professional staff, efficient and on time. Was kept up to date on work progress and appointments. Knowledgeable, courteous technician who answered all my questions and cleaned up well when work was finished. Will definitely hire again for future projects."
4 neighbors recently requested a quote
Recommended by63%of homeowners
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Avatar for HVAC Service Corporation
HVAC Service Corporation
New to Angi
Central A/C - Install - For BusinessCentral A/C - Service or Repair - For BusinessSwamp Cooler - Install or Replace - For Business+1 more

Serving Lancaster, SC and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

We have extensive experience providing design, construction, installation and on going maintenance for all of our service lines across a diverse spectrum of industries and asset types. Founded over 75 years ago, HVAC Service Corporation has been a cornerstone in the Carolinas for reliable and efficient HVAC solutions. Our commitment to quality service and customer satisfaction has made us a trusted name in the industry. We are licensed and insured in North Carolina, South Carolina, and parts of Georgia, with our headquarters located in Gastonia, NC. Our mission is to provide top-notch commercial heating and air conditioning services that meet the unique needs of our clients.

Chiller Job
Response time3 hrs
Response rate94%
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Avatar for Byrum Heating & AC
Byrum Heating & AC
New to Angi
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+8 more

Serving Lancaster, SC and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

As a leading HVAC contractor serving Monroe, NC, and the surrounding area, Byrum Heating & A/C, Inc. has been delivering expert heating and cooling solutions for over 20 years. We're proud to be Union County’s fastest-growing HVAC company, driven by one simple principle: your comfort comes first. You deserve more than just good service—you deserve exceptional workmanship, top-quality products, and fair, transparent pricing. With an A+ BBB rating and a reputation built on integrity, reliability, and Christian values, we’re committed to exceeding your expectations every step of the way. We back our work with a 100% satisfaction guarantee and a 10-year workmanship warranty for your peace of mind.

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FAQs for air conditioning projects in Lancaster, 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 Lancaster, SC homeowners’ guide to air conditioning services

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

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