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Avatar for Acosta Heating, Cooling & Electrical
Acosta Heating, Cooling & Electrical
4.4(
468
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Cornelius, NC and surrounding areas

Approved

In business since 1972

Warranties offered

Credit card accepted

"Greg was excellent, where other companies told us we needed to replace our units, he told us that we had 8 to 10 years of life left in our heating unit. He said it was in excellent condition and should not have to worry about it. Our A/C was nearing the end of it life, explained in detail how the A/C worked, the type of unit he recommended. It was so refreshing to hear a repair say that our heating system did not need to replace, so instead of selling us something he saved us lots of money. We plan to us Acosta Heating & A/C in the future, as I found out that their repair people do not work on commission where most our companies do."
AC Maintenance
Heating Repair
AC Maintenance
Heating Repair
AC Maintenance

+8

Response time11 hrs
Response rate100%
22 neighbors recently requested a quote
Avatar for Brothers- ARS Air, Heat, and Plumbing
Brothers- ARS Air, Heat, and Plumbing
4.5(
198
)
Central A/C - Service or RepairCentral A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Cornelius, NC and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1995

Free estimates

Credit card accepted

"From start to finish a great experience! Called with no air conditioning yesterday, a Friday holiday weekend. The lady that answered the worked wonders and found tech close by that could come the next morning. I received a call the tech was going to be earlier than expected. Great news on a hot day with no air. The service was efficient and fair priced. Within a hour my unit was up and running again. The sales office followed up right after to schedule a time to look a future options since my unit is getting up there in age. No pushy sales. Professional, quality service. I will use them in the future and highly recommend this company."
System Installation
722 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Hutch-N-Son's HVAC
Hutch-N-Son's HVAC
5.0(
34
)
Central A/C - Service or Repair

Serving Cornelius, NC and surrounding areas

Approved

In business since 2003

Emergency services offered

Customers say: True professional

"Chris did a great job replacing evaporator coil in our A/C system. Knowledgeable, punctual and friendly. The price was very competitive. Definitely recommend this company and will use them for future service and projects."
Response time3 hrs
Response rate96%
Recommended by93%of homeowners
Avatar for GSM Services
GSM Services
4.7(
105
)
Central A/C - InstallAir Ducts & Vents - CleanCentral A/C - Install - For Business+3 more

Serving Cornelius, NC and surrounding areas

Approved

In business since 1927

Free estimates

Emergency services offered

"They came out because our unit was not blowing cold air. The tech found a leak in the system and scheduled a time to replace the part. He refilled our refrigerant that day which was included in the price of the part. My family has used this company for years with no complaints."
New Air Conditioners
AC System Replacement in Charlotte, NC
Dust and debris from ductwork pulled into the duct cleaning machine
Dryer Vent Cleaner Charlotte, NC
Ductless Mini Split Installation

+66

Response time1 day
41 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+3 more

Serving Cornelius, NC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I called Mike on a Sunday night and he returned my call the next morning.  They came around lunch and checked on my AC unit which was freezing up and determined it needed some freon.  Charged the system and had me back in cool comfort in no time.  A couple of days later the other unit in my house was not coming on.  Impressed with the quick service the first time, I called them back.  Admittedly, I was thinking in the back of my head if the second vist could have been related to the first.  Turns out when they got the second unit open, I simply had a dead bug keeping a connection from making.  They cleaned out my unit and checked the freon in the second unit.  My fears about the two visits being related were quickly put to rest when the technician told my wife, there would be no charge for the second visit, since they had just been out a couple days before.  Thanks for the quick service and not taking advantage of a guy with a dead bug in his AC.
"
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 CLT Quality Air LLC
CLT Quality Air LLC
5.0(
20
)
Central A/C - Install

Serving Cornelius, NC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"NC Quality Air provided excellent service from start to finish. The technicians were professional, knowledgeable, and took the time to explain everything clearly. The work was done efficiently and the quality really shows. I highly recommend NC Quality Air for anyone needing reliable HVAC service."
QPS Fleet
old unit
old unit
old unit
old unit

+75

Response time8 hrs
Response rate100%
19 neighbors recently requested a quote
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Air Conditioning questions, answered by experts

Yes, scorpions can enter a home through AC vents, especially if the system is not well-sealed. As excellent climbers, they can scale a home's exterior and squeeze through gaps as small as 1/16 of an inch. Scorpions are often attracted to the moisture around air conditioning ducts or seek cooler areas during hot weather, using vents as a pathway inside. They may slip through small openings where the duct meets the vent cover and travel within walls before emerging. To prevent this, inspect your vents, seal any gaps, and consider installing fine mesh screens.

Unfreezing an AC unit is not a DIY project unless the problem is a dirty air filter. Changing out an air filter is easy for homeowners, but otherwise, trying to repair ductwork, refill refrigerant, or replace a blower fan motor are tasks best left to the pros. Otherwise, you could cause further damage to your cooling system or even harm to yourself.

An HVAC system typically lasts between 10 and 30 years, with an average lifespan of 15 to 25 years. The longevity of the system is influenced by factors such as the quality of the unit, usage frequency, local climate, and how well it is maintained. Regular maintenance, including cleaning, filter replacements, and professional inspections, can help maximize its lifespan. Different components within the system have varying life expectancies. For example:

  • Furnaces: 15 to 30 years

  • Boilers: 20 to 35 years

  • Air Conditioners (AC units): 12 to 20 years

  • Heat Pumps: 10 to 20 years

  • Ductless Mini-Splits: 10 to 30 years

Turn your system off when you're toasty or when you're out to prevent unnecessary wear. Using the timer on your thermostat so that it switches off when it reaches a certain temperature or turns on just before you get back from work is best. An annual maintenance contract can be helpful to ensure your system receives these important services at regular intervals.

Air conditioners can stop working in the middle of the night for many reasons. Your local power grid might shut down late at night. Power surges can also trip your breakers if too much power is being used in the area at the time. If your AC is connected to a digital thermostat, it gets naturally cooler at night, so the outdoor temperature might dip below the automated setting to turn the cooling system off.

The Cornelius, NC homeowners’ guide to air conditioning services

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