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

Avatar for A Maynor Heating and Air Conditioning, Inc.
A Maynor Heating and Air Conditioning, Inc.
4.9(
107
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Smithfield, NC and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"Just had my first service check up on my heating and air conditioning unit. As was the install the scheduling was easy. The technician called prior to arrival. I met him at the door and he explained everything that the service included. Then he went about his business. The report was concise and I am extremely pleased with his professionalism and manner. I highly recommend Maynor for your installation and service needs."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time1 day
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Landen Heating and Cooling, Inc.
Landen Heating and Cooling, Inc.
4.5(
179
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Smithfield, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Emergency services offered

"Julio did a fantastic job performing our latest air conditioning servicing. We have a maintenance contract with Landed Air and they check and service our AC unit system twice a year. They also. do a very good job and are very professional and give us good information. We highly recommend them for any service work."
LandenAir, LLC
Unit Replacement
Response time7 hrs
53 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Thermo Direct, Inc.
Thermo Direct, Inc.
4.4(
351
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Smithfield, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Emergency services offered

"Austin and Thomas were courteous, efficient, prompt, and quiet. They installed my new A/C and Furnace in unbearably warm conditions. Despite this, they got the job done with patience and good humor."
Daikin Unit
Install in Raleigh
Install in Raleigh
Ductwork Install in Raleigh
Install in Raleigh

+34

Response time6 hrs
57 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Dominion Service Heat and Air
Dominion Service Heat and Air
4.1(
183
)
Central A/C - Service or Repair

Serving Smithfield, NC and surrounding areas

Approved

In business since 1994

Emergency services offered

Warranties offered

"Dominion Services replaced my 30-year old HVAC system (the outside compressor, and the inside air handler) with a modern one having a 50% increased efficiency rating. The quality of their work is high (four friendly employees with more than 100+ years' combined experience were involved) and have good flexibility to adjust to my work schedule. They easily adapted the new system to the existing hook-ups, and were flexible in their selection among alternate, reliable replacement HVAC systems. The replacement cost was well within the range of the national average. I recommend contacting Dominion Services for insight into any HVAC issue."
Homeowner
new hvac install
A/c unit
furnace
heat pumps

+7

Response time3 hrs
21 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Parker and Company Heating and Air
Parker and Company Heating and Air
4.4(
19
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+1 more

Serving Smithfield, NC and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"Parker Heating and Air effectively described the issues with my HVAC system. I was presented options for repairs and I trusted Drake the tech onsite to make the best choice. My AC was back working in the next hour thanks to his hard work. Highly recommend!"
Gas Furnace Package Unit
Training our new technician to serve our clients.
Fall Tune Ups
Brand new Bosch for our valued customer
Fall Tune-Up's

+28

33 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for A & M Heating & Air Conditioning, Inc.
A & M Heating & Air Conditioning, Inc.
4.8(
21
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+5 more

Serving Smithfield, NC and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"Very satisfied with the outcome. The house was not occupied while this work was being done, so I was not present during much of the work to observe the installation of system & ductwork, but it worked beautifully once we moved in and began to use it, a turnkey experience. Twice since then we've had questions (e.g., Can we move the ductwork in one part of the attic to accommodate new attic stairs?), and both times they were very responsive and came out at no charge to me, despite the fact that the work was done over a year ago. I've interacted with both Mike (the owner) and with one of his technicians, and have been very satisfied with the level of customer care I've received. I will use them in the future for our heating & A/C needs.
"
Mitsubishi Install
Roots
Broken Pipe
Repaired Pipe
Water Heater

+4

Recommended by89%of homeowners
NuBlue Electric, Plumbing & Air
5.0(
5
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+5 more

Serving Smithfield, NC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

NuBlue Air serves all of the Lake Norman region's needs. Our team of expert technicians specialize in residential hvac repairs and installations such as ac units, furnaces, indoor air quality products, vent/duct cleaning, and much more. We are your HVAC technicians of choice. NuBlue Electric Plumbing & Air is Redefining Service Excellence in the Lake Norman region! \n \nHave an Electrical OR Plumbing OR Air issue? Our NuBlue team can help with those! A one-stop-shop, the NuBlue team is able to take care of all Electric, Plumbing, and Air needs. \n \nVisit our website for coupons and specials!

18 neighbors recently requested a quote
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FAQs for air conditioning projects in Smithfield, NC

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 Smithfield, NC homeowners’ guide to air conditioning services

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