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Avatar for Acosta Heating, Cooling & Electrical
Acosta Heating, Cooling & Electrical
4.4(
468
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 1972

Warranties offered

Credit card accepted

"They were prompt and efficient, from the initial repair-person, to the 'comfort advisor' to the installers, as my system was ~ 20 years old, I replaced both furnace and AC."
AC Maintenance
Heating Repair
AC Maintenance
Heating Repair
AC Maintenance

+8

Response time11 hrs
Response rate100%
16 neighbors recently requested a quote
Avatar for Retro Air, LLC
Retro Air, LLC
5.0(
27
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Rhett and his team did a fantastic job replacing both of my heating and AC systems. He beat the next lowest bid by over $3000. I could not be happier and highly recommend."
York
York
General Installation
General Installation
Response time1 day
22 neighbors recently requested a quote
Recommended by74%of homeowners
Avatar for Horne Heating and Air Conditioning
Horne Heating and Air Conditioning
4.7(
1,434
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"Bryan Hayla, our technician, does a great job for us. He does great work, consistently goes the extra mile to point out Issues we should be aware of and always reviews in detail the work he has done. We recommend him, and Horne Heating and Air Conditioning without reservation."
clean new lines between home and unit
After - HVAC System on the right was replaced.
After - HVAC System
Previous AC Unit
A surge protector installed with the new system, protecting your investment

+20

Response time8 hrs
Response rate100%
34 neighbors recently requested a quote
Avatar for Appalachian Air Ducts
Appalachian Air Ducts
4.8(
516
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"I initially scheduled an appointment to have my dryer vents cleaned. Kevin arrived earlier than the scheduled time and that was much appreciated (he actually called to ask if he could come earlier). After he took care of the dryer vents, I asked if he could take a quick look at the fan/exhaust in one of my bathrooms and let me know if I could schedule a later date to have those cleaned. Not only did Kevin take a look, but he cleaned them with a smile and no extra charge. Kevin, with Appalachian Air Ducts, is a true professional and I will absolutely hire them in the future!"
Additional Photos
Additional Photos
Before
After
Response time2 days
2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for KS Kamara Heating & Air
KS Kamara Heating & Air
5.0(
83
)

Serving Cornelius, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Credit card accepted

"Excellent service and great price. We were lucky enough to get same day service during the busiest time of year. He got our AC working, cleaned the blower, and etc. I would definitely recommend Kamara Heating and Air. Thank you for the great service!!"
Response time3 hrs
Response rate91%
23 neighbors recently requested a quote
Avatar for Hutch-N-Son's HVAC
Hutch-N-Son's HVAC
5.0(
34
)

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 NuBlue Air
NuBlue Air
4.4(
52
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I called and Mike returned my call quickly and set up a date.  He came and checked the air conditioner.  He did not try to convince me it needed any else other than a check up.  Was quick and efficient and mannerly.  I would certainly use him again even for more serious repairs.
"
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
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Air Conditioning questions, answered by experts

You should plan to change your AC unit's filter every one to three months, depending on the manufacturer's recommendations. You should also clean the coils at least once per year, but if you have pets or someone in your household has allergies, you might need to clean them more often. Fortunately, many pros will clean the coils and change the filter for you during an inspection, which you should schedule once or twice per year.

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.

For washable or electrostatic air conditioner filters, you can soak and rinse them with water. If you rinse the filter with water, make sure to use a faucet, shower head, or garden hose with a gentle water pressure setting, as strong water pressure could damage the filter.

But for disposable filters, water could ruin the filter, even allowing mold to grow in the filter. Instead, these filters should be replaced.

One of the fastest ways to unfreeze an AC unit is to turn off the unit and, if it’s warm outside, use the fan-only mode to help blow warmer air through the unit to speed up the defrosting process. While it may be tempting to use a hair dryer to defrost the air conditioner, that high heat can damage the coils.

After defrosting, if you can safely solve the issue with a fix like changing the filter, go ahead and do so. Otherwise, call in a pro before turning your AC back on.

Most HVAC surge protectors last about three to five years, depending on how often your home experiences blackouts or brownouts. If your unit is susceptible to more frequent electrical surges, consider replacing your surge protector every two years. Consult your HVAC professional to determine when and how often to replace your HVAC surge protectors.

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.